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• Volume 21, Issue 1
• What is a case study?
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• Roberta Heale 1 ,
• Alison Twycross 2
• 1 School of Nursing , Laurentian University , Sudbury , Ontario , Canada
• 2 School of Health and Social Care , London South Bank University , London , UK
• Correspondence to Dr Roberta Heale, School of Nursing, Laurentian University, Sudbury, ON P3E2C6, Canada; rheale{at}laurentian.ca

https://doi.org/10.1136/eb-2017-102845

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What is it?

Case study is a research methodology, typically seen in social and life sciences. There is no one definition of case study research. 1 However, very simply… ‘a case study can be defined as an intensive study about a person, a group of people or a unit, which is aimed to generalize over several units’. 1 A case study has also been described as an intensive, systematic investigation of a single individual, group, community or some other unit in which the researcher examines in-depth data relating to several variables. 2

Often there are several similar cases to consider such as educational or social service programmes that are delivered from a number of locations. Although similar, they are complex and have unique features. In these circumstances, the evaluation of several, similar cases will provide a better answer to a research question than if only one case is examined, hence the multiple-case study. Stake asserts that the cases are grouped and viewed as one entity, called the quintain . 6  ‘We study what is similar and different about the cases to understand the quintain better’. 6

The steps when using case study methodology are the same as for other types of research. 6 The first step is defining the single case or identifying a group of similar cases that can then be incorporated into a multiple-case study. A search to determine what is known about the case(s) is typically conducted. This may include a review of the literature, grey literature, media, reports and more, which serves to establish a basic understanding of the cases and informs the development of research questions. Data in case studies are often, but not exclusively, qualitative in nature. In multiple-case studies, analysis within cases and across cases is conducted. Themes arise from the analyses and assertions about the cases as a whole, or the quintain, emerge. 6

Benefits and limitations of case studies

If a researcher wants to study a specific phenomenon arising from a particular entity, then a single-case study is warranted and will allow for a in-depth understanding of the single phenomenon and, as discussed above, would involve collecting several different types of data. This is illustrated in example 1 below.

Using a multiple-case research study allows for a more in-depth understanding of the cases as a unit, through comparison of similarities and differences of the individual cases embedded within the quintain. Evidence arising from multiple-case studies is often stronger and more reliable than from single-case research. Multiple-case studies allow for more comprehensive exploration of research questions and theory development. 6

Despite the advantages of case studies, there are limitations. The sheer volume of data is difficult to organise and data analysis and integration strategies need to be carefully thought through. There is also sometimes a temptation to veer away from the research focus. 2 Reporting of findings from multiple-case research studies is also challenging at times, 1 particularly in relation to the word limits for some journal papers.

Examples of case studies

Example 1: nurses’ paediatric pain management practices.

One of the authors of this paper (AT) has used a case study approach to explore nurses’ paediatric pain management practices. This involved collecting several datasets:

Observational data to gain a picture about actual pain management practices.

Questionnaire data about nurses’ knowledge about paediatric pain management practices and how well they felt they managed pain in children.

Questionnaire data about how critical nurses perceived pain management tasks to be.

These datasets were analysed separately and then compared 7–9 and demonstrated that nurses’ level of theoretical did not impact on the quality of their pain management practices. 7 Nor did individual nurse’s perceptions of how critical a task was effect the likelihood of them carrying out this task in practice. 8 There was also a difference in self-reported and observed practices 9 ; actual (observed) practices did not confirm to best practice guidelines, whereas self-reported practices tended to.

Example 2: quality of care for complex patients at Nurse Practitioner-Led Clinics (NPLCs)

The other author of this paper (RH) has conducted a multiple-case study to determine the quality of care for patients with complex clinical presentations in NPLCs in Ontario, Canada. 10 Five NPLCs served as individual cases that, together, represented the quatrain. Three types of data were collected including:

Review of documentation related to the NPLC model (media, annual reports, research articles, grey literature and regulatory legislation).

Interviews with nurse practitioners (NPs) practising at the five NPLCs to determine their perceptions of the impact of the NPLC model on the quality of care provided to patients with multimorbidity.

Chart audits conducted at the five NPLCs to determine the extent to which evidence-based guidelines were followed for patients with diabetes and at least one other chronic condition.

The three sources of data collected from the five NPLCs were analysed and themes arose related to the quality of care for complex patients at NPLCs. The multiple-case study confirmed that nurse practitioners are the primary care providers at the NPLCs, and this positively impacts the quality of care for patients with multimorbidity. Healthcare policy, such as lack of an increase in salary for NPs for 10 years, has resulted in issues in recruitment and retention of NPs at NPLCs. This, along with insufficient resources in the communities where NPLCs are located and high patient vulnerability at NPLCs, have a negative impact on the quality of care. 10

These examples illustrate how collecting data about a single case or multiple cases helps us to better understand the phenomenon in question. Case study methodology serves to provide a framework for evaluation and analysis of complex issues. It shines a light on the holistic nature of nursing practice and offers a perspective that informs improved patient care.

• Gustafsson J
• Calanzaro M
• Sandelowski M

Competing interests None declared.

Provenance and peer review Commissioned; internally peer reviewed.

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Writing a Patient Case Study: A Comprehensive Guide

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Writing a patient case study is a crucial aspect of medical research and analysis. A well-written and comprehensive case study provides valuable insights into patient conditions and contributes to the advancement of healthcare practices. In this guide, we will explore the importance of patient case studies, the ethical considerations involved, and the essential steps to take when preparing, conducting, and writing a patient case study.

Understanding the Importance of Patient Case Studies

Patient case studies play a vital role in medical research, helping researchers and healthcare professionals gain a deeper understanding of various medical conditions, treatment outcomes , and patient experiences. They serve as real-life examples that highlight different aspects of a medical case, including symptoms, diagnosis, treatment plans, and outcomes. By analyzing case studies, researchers can identify patterns, compare treatment methods, and ultimately improve patient care. Moreover, case studies are instrumental in medical education, offering students practical scenarios to apply theoretical knowledge.

The Role of Case Studies in Medical Research

In medical research, case studies serve as valuable evidence that contributes to the overall body of scientific knowledge. They allow researchers to examine rare conditions or unusual presentations, providing important insights that are not easily obtainable through other research methods. Case studies offer an opportunity to explore the complexities and nuances of medical diagnoses, treatments, and patient experiences in detail, ultimately leading to the development of evidence-based guidelines and improved clinical practices .

Ethical Considerations in Patient Case Studies

When conducting patient case studies, it is crucial to adhere to strict ethical standards. Patient confidentiality and informed consent are paramount. Researchers must ensure that patients' personal information remains confidential and that they have given informed consent to participate in the study. Additionally, the study design and methods must prioritize patient safety and well-being. Ethical considerations should guide every step of the case study process to ensure the protection of patients' rights and dignity.

Furthermore, patient case studies provide an opportunity for interdisciplinary collaboration within the medical field. In complex cases, healthcare professionals from different specialties come together to analyze the data and contribute their expertise. This collaborative approach enhances the quality of research and fosters a holistic understanding of the medical condition being studied.

Moreover, patient case studies can also shed light on the social and psychological impacts of healthcare. By examining the patient's experiences, researchers can gain insights into the impact of a medical condition on the individual's quality of life, mental well-being, and social support systems. This broader perspective helps healthcare professionals develop patient-centered approaches that address not only the physical aspects of the condition but also the emotional and social needs of the patient.

Preparing for Your Patient Case Study

Before embarking on a patient case study, careful preparation is necessary. This involves identifying a suitable patient and obtaining informed consent.

Undertaking a patient case study is a meticulous process that requires attention to detail and ethical considerations. To ensure the study's success and validity, it is crucial to delve deep into the selection process and consent acquisition.

Identifying a Suitable Patient

The selection of an appropriate patient for a case study is crucial. Ideally, the patient should have a condition that is relevant to the research topic and that showcases specific aspects of interest. It is essential to consider factors such as the availability of medical records , the uniqueness of the case, and ethical considerations. Collaborating with healthcare professionals and experts in the field can be beneficial in identifying suitable patients for your study.

Moreover, the process of identifying a suitable patient involves a comprehensive review of the medical history, diagnostic tests, and treatment plans. Understanding the nuances of the patient's condition and its implications on the research objectives is fundamental in creating a compelling case study.

Gaining Informed Consent

Prior to initiating the case study, obtaining informed consent from the patient is mandatory. Informed consent ensures that the patient fully understands the purpose of the study, the potential risks or benefits involved, and their rights as a participant. Researchers must provide clear and comprehensible information, allowing the patient ample time to consider their involvement. Additionally, it is essential to respect the patient's right to withdraw from the study at any given point without facing any consequences.

Furthermore, the process of gaining informed consent involves establishing a transparent and open dialogue with the patient. Addressing any concerns or queries they may have regarding the study can foster trust and cooperation, ultimately enhancing the quality of the case study.

Conducting the Patient Interview

The patient interview is a crucial part of gathering information for the case study. It allows researchers to obtain subjective details, delve into the patient's experiences, and gain insights into their condition.

When conducting a patient interview, it is essential for researchers to create a comfortable and welcoming environment. Patients may feel anxious or vulnerable, so establishing rapport and showing empathy can help them feel at ease. Building a trusting relationship with the patient can encourage open communication and lead to a more fruitful exchange of information.

Essential Questions to Ask

During the interview, it is important to ask a range of questions to gather comprehensive information. These may include inquiries about the patient's medical history, symptoms, lifestyle, and any factors that may have contributed to their condition. By asking open-ended questions, researchers encourage patients to share their personal experiences and provide valuable insights into their healthcare journey.

Moreover, it is crucial for researchers to actively listen during the interview. Paying attention to not just the words spoken but also the patient's tone, body language, and emotions can reveal additional nuances that may impact the understanding of the case. Empathetic listening demonstrates respect for the patient's perspective and can help researchers form a more holistic view of the individual's health concerns.

Recording and Transcribing the Interview

Accurate recording and transcription of the patient interview are crucial for maintaining the integrity of the case study. The use of audio recordings, with the patient's consent, ensures that important details are not missed or misconstrued. When transcribing the interview, researchers should be meticulous in capturing the patient's exact words, ensuring that any abbreviations or acronyms are correctly documented. This meticulous approach facilitates a comprehensive analysis of the case and promotes transparency in the research process.

Moreover, researchers should consider the ethical implications of recording and transcribing patient interviews . Respecting patient confidentiality and privacy is paramount, and measures should be in place to safeguard sensitive information. Clear guidelines on data storage, access, and disposal should be established to protect the integrity of the research and uphold the trust placed in the researchers by the patients.

Analysing the Patient's Medical History

Analyzing the patient's medical history is an essential step in understanding the context of their condition and treatment. It involves accessing and interpreting medical records and identifying key medical events.

Delving into a patient's medical history unveils a treasure trove of information that can shed light on their current health status. From the initial diagnosis to the latest treatment regimen, each entry in the medical records forms a piece of the puzzle that researchers meticulously piece together.

Interpreting Medical Records

The analysis of medical records offers a comprehensive overview of the patient's healthcare journey. Researchers must examine medical reports, laboratory results, imaging studies, and other relevant documentation. Careful evaluation of these records helps researchers understand the course of the disease, the efficacy of previous treatments, and any complications that may have arisen.

Medical records are akin to a detailed roadmap of the patient's health landscape, providing valuable insights into the twists and turns encountered along the way. Each blood test result, X-ray image, and specialist consultation note contributes to painting a holistic picture of the patient's medical narrative.

Identifying Key Medical Events

Within the patient's medical history, certain key events may have had a significant impact on their condition. By identifying these events, researchers can explore their relevance to the overall case study. Examples of key events may include surgeries, significant changes in symptoms, adverse reactions to medications, or responses to specific treatments. These events help shape the narrative of the case study and provide valuable insights into the patient's healthcare journey.

Unearthing these pivotal moments in a patient's medical history is akin to discovering hidden gems that unlock crucial chapters in their healthcare story. Each key event serves as a turning point, influencing subsequent decisions and treatments that shape the patient's medical trajectory.

Writing the Patient Case Study

Once all the necessary information has been gathered and analyzed, it is time to write the patient case study. A well-structured and concise case study allows for easy comprehension and dissemination of information.

Structuring Your Case Study

When structuring the case study, it is important to present the information in a logical manner. Begin with an introduction that sets the context of the case study and outlines its objectives. Follow this with a detailed description of the patient's medical history, including relevant diagnostic tests, treatments, and interventions. Describe the patient's progress, including any challenges or complications encountered along the way. Finally, conclude with an analysis of the case, highlighting key findings, lessons learned, and potential implications for future research or clinical practice.

Using Medical Terminology Correctly

Using appropriate medical terminology is essential in ensuring clarity and precision in your case study. When describing symptoms, diagnoses, treatments, and other medical concepts, use standard, approved terminology widely accepted in the medical community. This consistency facilitates better understanding and communication between researchers, healthcare professionals, and readers of the case study.

Furthermore, it is worth noting that the use of medical terminology also helps to maintain the integrity and professionalism of the case study. By adhering to established terminology, researchers can avoid confusion and ensure that their findings are accurately interpreted and applied in clinical settings.

Moreover, the correct use of medical terminology enhances the credibility of the case study. It demonstrates the author's expertise and knowledge in the field, lending weight to their conclusions and recommendations. This is particularly important when presenting case studies to medical professionals, who rely on accurate and precise language to make informed decisions about patient care.

In conclusion, writing a patient case study requires careful planning, ethical considerations, meticulous data collection, and effective communication. Patient case studies provide invaluable insights into medical conditions, contributing to the body of scientific knowledge and improving patient care and outcomes. By following this comprehensive guide, researchers can create informative and influential case studies that advance medical research and enhance clinical practices.

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Case Reports, Case Series – From Clinical Practice to Evidence-Based Medicine in Graduate Medical Education

Jerry w sayre, hale z toklu, joseph mazza, steven yale.

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Hale Z. Toklu [email protected]

Corresponding author.

Received 2017 May 8; Accepted 2017 Aug 5; Collection date 2017 Aug.

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Case reports and case series or case study research are descriptive studies that are prepared for illustrating novel, unusual, or atypical features identified in patients in medical practice, and they potentially generate new research questions. They are empirical inquiries or investigations of a patient or a group of patients in a natural, real-world clinical setting. Case study research is a method that focuses on the contextual analysis of a number of events or conditions and their relationships. There is disagreement among physicians on the value of case studies in the medical literature, particularly for educators focused on teaching evidence-based medicine (EBM) for student learners in graduate medical education. Despite their limitations, case study research is a beneficial tool and learning experience in graduate medical education and among novice researchers. The preparation and presentation of case studies can help students and graduate medical education programs evaluate and apply the six American College of Graduate Medical Education (ACGME) competencies in the areas of medical knowledge, patient care, practice-based learning, professionalism, systems-based practice, and communication. A goal in graduate medical education should be to assist residents to expand their critical thinking, problem-solving, and decision-making skills. These attributes are required in the teaching and practice of EBM. In this aspect, case studies provide a platform for developing clinical skills and problem-based learning methods. Hence, graduate medical education programs should encourage, assist, and support residents in the publication of clinical case studies; and clinical teachers should encourage graduate students to publish case reports during their graduate medical education.

Keywords: clinical, case reports, case studies, evidence-based medicine, graduate medical education, resident training, residency, clinical skills, publishing, clinical practice

Introduction

Case reports and case series or case study research   are descriptive studies to present patients in their natural clinical setting. Case reports, which generally consist of three or fewer patients, are prepared to illustrate features in the practice of medicine and potentially create new research questions that may contribute to the acquisition of additional knowledge in the literature. Case studies involve multiple patients; they are a qualitative research method and include in-depth analyses or experiential inquiries of a person or group in their real-world setting. Case study research focuses on the contextual analysis of several events or conditions and their relationships [ 1 ]. In addition to their teaching value for students and graduate medical education programs, case reports provide a starting point for novice investigators, which may prepare and encourage them to seek more contextual writing experiences for future research investigation. It may also provide senior physicians with clues about emerging epidemics or a recognition of previously unrecognized syndromes. Limitations primarily involve the lack of generalizability and implications in clinical practice, which are factors extraneous to the learning model (Table 1 ).

Table 1. Advantages and disadvantages of case reports and case studies.

There is disagreement among physicians on the value of case reports in the medical literature and in evidence-based medicine (EBM) [ 2 ]. EBM aims to optimize decision-making by using evidence from well-conducted research. Therefore, not all data has the same value as the evidence. The pyramid (Figure 1 ) classifies publications based on their study outlines and according to the power of evidence they provide [ 2 - 3 ]. In the classical pyramid represented below, systematic reviews and a meta-analysis are expected to provide the strongest evidence. However, a recent modification of the pyramid was suggested by Murad et al. [ 2 ]: the meta-analysis and systematic reviews are removed from the pyramid and are suggested to be a lens through which evidence is viewed (Figure 1 ). 

Figure 1. Revised pyramid for study designs and their place in evidence-based medicine.

Modified from Murad et al. [ 2 ]

Because case reports do not rank highly in the hierarchy of evidence and are not frequently cited, as they describe the clinical circumstances of single patients, they are seldom published by high-impact medical journals. However, case reports are proposed to have significant educational value because they advance medical knowledge and constitute evidence for EBM. In addition, well-developed publication resources can be difficult to find, especially for medical residents; those that do exist vary in quality and may not be suitable for the aim and scope of the journals. Over the last several years, a number (approximately 160) of new peer-reviewed journals that focus on publishing case reports have emerged. These are mostly open-access journals with considerably high acceptance rates [ 4 ]. Packer et al. reported a 6% publication rate for case reports [ 5 ]; however, they did not disclose the number of papers submitted but rejected and neither did they state whether any of the reported cases were submitted to open-access journals.

The development of open-access journals has created a new venue for students and faculty to publish. In contrast to subscription-based and peer-reviewed e-journals, many of these new case report journals are not adequately reviewed and, instead, have a questionably high acceptance rate [ 4 ]. There, however, remains the issue of the fee-based publication of case reports in open-access journals without proper peer reviews, which increases the burden of scientific literature. Trainees should be made aware of the potential for academic dilution, particularly with some open-access publishers. While case reports with high-quality peer reviews are associated with a relatively low acceptance rate, this rigorous process introduces trainees to the experience and expectations of peer reviews and addresses other issues or flaws not considered prior to submission. We believe that these are important skills that should be emphasized and experienced during training, and authors should seek these journals for the submission of their manuscripts.

Importance of Case Reports and Case Series in Graduate Medical Education

The Accreditation Council for Graduate Medical Education (ACGME) has challenged faculties to adapt teaching methodologies to accommodate the different learning modalities of the next generation of physicians. As evidenced by its implementation by ACGME, competency-based medical education is rapidly gaining international acceptance, moving from classic didactic lectures to self-directed learning opportunities with experiential learning aids in the development of critical cognitive and scholarly skills. As graduate medical educators, we are in agreement with Packer et al. about the value of the educational benefits resulting from student-generated case reports [ 5 ]. Case study assignments help residents develop a variety of key skills, as previously described. EBM is an eventual decision-making process for executing the most appropriate treatment approach by using the tools that are compatible with the national health policy, medical evidence, and the personal factors of physician and patient (Figure 2 ). The practice of identifying and developing a case study creates a learning opportunity for listening skills and appreciation for the patient’s narrative as well as for developing critical learning and thinking skills that are directly applicable to the practice of EBM. This critically important process simultaneously enhances both the medical and the humanistic importance of physician-patient interaction. In addition, case-based learning is an active learner-centered approach for medical students and residents. It serves as a curricular context, which can promote the retention of information and evidence-based thinking.

Figure 2. Factors involved in decision making with the context of evidence-based medicine.

Modified from Toklu et al. 2015 [ 3 ]

The value of case studies in the medical literature is controversial among physicians. Despite their limitations, clinical case reports and case series are beneficial tools in graduate medical education. The preparation and presentation of case studies can help students and residents acquire and apply clinical competencies in the areas of medical knowledge, practice-based learning, systems-based practice, professionalism, and communication. In this aspect, case studies provide a tool for developing clinical skills through problem-based learning methods. As a result, journals should encourage the publication of clinical case studies from graduate medical education programs through a commonly applied peer-review process, and clinical teachers should promote medical residents to publish case reports during their graduate medical education.

The content published in Cureus is the result of clinical experience and/or research by independent individuals or organizations. Cureus is not responsible for the scientific accuracy or reliability of data or conclusions published herein. All content published within Cureus is intended only for educational, research and reference purposes. Additionally, articles published within Cureus should not be deemed a suitable substitute for the advice of a qualified health care professional. Do not disregard or avoid professional medical advice due to content published within Cureus.

The authors have declared that no competing interests exist.

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Case reports in medical education: a platform for training medical students, residents, and fellows in scientific writing and critical thinking

• Aleksandra G. Florek 1 &
• Robert P. Dellavalle 2  

Journal of Medical Case Reports volume  10 , Article number:  86 ( 2016 ) Cite this article

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A case report is a detailed narrative that usually illustrates a diagnostic or therapeutic problem experienced by one or several patients. Case reports commonly serve as the first line of evidence for new interventions or they function as alarms that an issue exists with an already established therapy. Case reports are of minor importance in evidence-based medicine; however, they make meaningful contributions to both the knowledge and education of medical students, residents, and fellows. Case reports are written with the goal of sharing information for medical, scientific, or educational purposes. They often serve as medical or even undergraduate students’ first experience with medical writing and they provide a solid foundation for manuscript preparation and publication. In the last few decades, there has been an exponential increase in medical student research, specifically in the number of manuscripts published by medical students. It is important to foster this academic spirit among students by encouraging them to become involved in research. This editorial will focus on the value and educational benefits of writing case reports for medical students, university students, residents, and fellows.

Peer Review reports

Introduction

The role of case reports is to provide descriptive information about a clinical patient scenario and to share this educational experience with the general medical and scientific community [ 1 ]. Furthermore, case reports foster an educational medium in disseminating new and rare diseases, thus increasing the knowledge of evaluation, diagnosis, treatment, and prognosis of diseases [ 2 ]. This editorial outlines why traditional case reports are not only valuable to the general medical community, but are also an integral part of medical education and clinical training. This editorial also hopes to inspire medical students, residents, and fellows of all disciplines to write and continue writing case reports.

From grand rounds to journals: importance of case presentation

Case presentation has always been a time-honored and important tool of medical education and inpatient care, and has consisted of presenting challenging medical cases to an audience of medical students, residents, and attending physicians [ 3 ]. Grand rounds has a tradition in medicine dating back to the presentations of Sir William Osler, known by many as the father of modern medicine, at Johns Hopkins School of Medicine. Often, patients with disorders that are rare, difficult to treat, or challenging to diagnose are discussed during grand rounds. Grand rounds function as a teaching tool to increase medical knowledge and improve medical care. By participating in these events, medical students and residents enhance critical reasoning skills and learn new information as well as ways to avoid potential mistakes.

Similarly to grand rounds, case reports are a valuable tool for medical students and residents to recognize clinical questions as they arise in the daily clinical practice. Students are then permitted to formulate an answerable clinical question, and then to find current best evidence to answer this question by performing a thorough and effective literature search. During the search, students critically appraise the medical literature and choose the appropriate literature to support the case. By writing a case report or case series, students gain experience in literature search and medical writing. Also, students execute the steps of evidence-based medicine, which consists of formulating a clinical question, finding the best evidence, critically appraising the evidence, and applying the evidence to the patient. Even if the manuscript does not ultimately get published, the review of the literature required to support the case carries educational value. From evaluating a patient’s medical history, to performing a physical examination, to considering various differential diagnosis, selecting a treatment plan, and considering various side effects and outcomes of treatments—all these components of case report write-ups provide an educational benefit to medical students, residents, and fellows.

Clinical learning during medical school and residency is to a large degree case-based [ 4 ]. Case presentations are often found in textbooks, conferences, daily team rounds, or departmental grand rounds. Case reports or presentations are an excellent tool for sharing educational experience. Some of the important educational objectives that case reports introduce include enhancing awareness of rare disorders to facilitate diagnosis, clarifying new aspects on the etiology of a disorder, clarifying misunderstood treatment response, and describing how to avoid future mistakes [ 5 ].

Preparation for an academic career

Furthermore, writing a case report can be an excellent preparation or exercise in a medical student’s career, often preparing one for a scientific career [ 4 ]. Students will be able to add the publications to their curriculum vitae for residency and fellowship applications. They will also be able to present some of the cases at local, national, and regional medical conferences, enabling them to meet peers and faculty in the area of their interest, thus enhancing their networking skills.

Case reports as vehicles for documenting new knowledge: first-line of evidence of new or innovative treatment

By writing case reports, medical students can contribute to the first line of evidence for developing new therapies [ 6 – 8 ]. In one case, a woman with a long-standing history of psoriasis was treated with infliximab, a tumor necrosis alpha-antibody. By just after two weeks after the infliximab infusion, her psoriasis had significantly improved. This isolated case report began a new era of treatment for psoriasis [ 9 ]. Albrecht et al. analyzed case reports and case series from The Lancet , published from 1 January 1996 to 30 June 1997, and found that of the 103 reports published in this high-impact journal, 24 were followed by randomized controlled trials (RCTs) [ 6 ].

First and major source for detecting rare adverse events of treatment

Case reports may serve as a source for detecting rare adverse events, at times leading to the removal of drugs from the market. Going back to the example of psoriasis, the phenomenon of psoriasis exacerbation with the use of interferon alpha was first described in a case report [ 10 ]. There are abundant examples of severe side effects of drugs that were detected after the drugs were approved by the US Food and Drug Administration. Furthermore, case reports help to identify side effects due to interaction between drugs, as well as side effects due to drugs being given to patients with renal failure.

First report of a rare condition

When encountering a rare pathology in the dermatologic clinic, one of the frequent procedures is to perform a search for similar cases in any of the search engines. A vigorous literature search in itself can be a valuable task assigned to a medical student.

Consensus-based clinical case reporting guidelines

In 2013, a group of researchers published a set of systematic reporting guidelines to guide authors in writing case reports. The group published a 13-item checklist that provides a framework to fulfill the need for precision, completeness, and transparency for published case reports [ 11 ]. Implementing these guidelines will help medical students or residents write case reports that met these these reporting standards, with the aim of focusing on individualized patient care.

Rapidity of publication

Compared to extensive studies such as RCTs, case reports offer the possibility of a quick publication, especially for busy clinicians or students who do not have the time or means of creating any prospective studies or RCTs [ 12 ]. Furthermore, there are many online open-access journals that focus on publishing case reports and case series, and that offer rapid publication times.

Given the challenging and diverse nature of medicine, many medical students or residents will come across a perplexing patient case. By offering to write up such a case, medical students will learn how to perform a literature review, communicate with various physicians in charge with the care of the patient, structure a manuscript, gain consent from the patient, collect data from various sources in the clinic, and how to submit and revise the manuscript. All of these skills are worth crafting early in the career of a medical student. Additionally, reporting single cases and series of cases is an important aspect of clinical research, especially for medical students, who often have limited funds for research and eagerness to contribute to medical science.

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Florek, A.G., Dellavalle, R.P. Case reports in medical education: a platform for training medical students, residents, and fellows in scientific writing and critical thinking. J Med Case Reports 10 , 86 (2016). https://doi.org/10.1186/s13256-016-0851-5

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Fundamentals of case study research in family medicine and community health

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Michael D Fetters 2

The aim of this article is to introduce family medicine researchers to case study research, a rigorous research methodology commonly used in the social and health sciences and only distantly related to clinical case reports. The article begins with an overview of case study in the social and health sciences, including its definition, potential applications, historical background and core features. This is followed by a 10-step description of the process of conducting a case study project illustrated using a case study conducted about a teaching programme executed to teach international family medicine resident learners sensitive examination skills. Steps for conducting a case study include (1) conducting a literature review; (2) formulating the research questions; (3) ensuring that a case study is appropriate; (4) determining the type of case study design; (5) defining boundaries of the case(s) and selecting the case(s); (6) preparing for data collection; (7) collecting and organising the data; (8) analysing the data; (9) writing the case study report; and (10) appraising the quality. Case study research is a highly flexible and powerful research tool available to family medicine researchers for a variety of applications.

• Significance statement

Given their potential for answering ‘how’ and ‘why’ questions about complex issues in their natural setting, case study designs are being increasingly used in the health sciences. Conducting a case study can, however, be a complex task because of the possibility of combining multiple methods and the need to choose between different types of case study designs. In order to introduce family medicine and community health researchers to the fundamentals of case study research, this article reviews its definition, potential applications, historical background and main characteristics. It follows on with a practical, step-by-step description of the case study process that will be useful to researchers interested in implementing this research design in their own practice.

• Introduction

This article provides family medicine and community health researchers a concise resource to conduct case study research. The article opens with an overview of case study in the social and health sciences, including its definition, potential applications, historical background and core features. This is followed by a 10-step description of the process of conducting a case study project, as described in the literature. These steps are illustrated using a case study about a teaching programme executed to teach international medical learners sensitive examination skills. The article ends with recommendations of useful articles and textbooks on case study research.

• Origins of case study research

Case study is a research design that involves an intensive and holistic examination of a contemporary phenomenon in a real-life setting. 1–3 It uses a variety of methods and multiple data sources to explore, describe or explain a single case bounded in time and place (ie, an event, individual, group, organisation or programme). A distinctive feature of case study is its focus on the particular characteristics of the case being studied and the contextual aspects, relationships and processes influencing it. 4 Here we do not include clinical case reports as these are beyond the scope of this article. While distantly related to clinical case reports commonly used to report unusual clinical case presentations or findings, case study is a research approach that is frequently used in the social sciences and health sciences. In contrast to other research designs, such as surveys or experiments, a key strength of case study is that it allows the researcher to adopt a holistic approach—rather than an isolated approach—to the study of social phenomena. As argued by Yin, 3 case studies are particularly suitable for answering ‘how’ research questions (ie, how a treatment was received) as well as ‘why’ research questions (ie, why the treatment produced the observed outcomes).

Given its potential for understanding complex processes as they occur in their natural setting, case study increasingly is used in a wide range of health-related disciplines and fields, including medicine, 5 nursing, 6 health services research 1 and health communication. 7 With regard to clinical practice and research, a number of authors 1 5 8 have highlighted how insights gained from case study designs can be used to describe patients’ experiences regarding care, explore health professionals’ perceptions regarding a policy change, and understand why medical treatments and complex interventions succeed or fail.

In anthropology and sociology, case study as a research design was introduced as a response to the prevailing view of quantitative research as the primary way of undertaking research. 9 From its beginnings, social scientists saw case study as a method to obtain comprehensive accounts of social phenomena from participants. In addition, it could complement the findings of survey research. Between the 1920s and 1960s, case study became the predominant research approach among the members of the Department of Sociology of the University of Chicago, widely known as ‘The Chicago School’. 10 11 During this period, prominent sociologists, such as Florian Znaniecki, William Thomas, Everett C Hughes and Howard S Becker, undertook a series of innovative case studies (including classical works such as The Polish peasant in Europe and America or Boys in White ), which laid the foundations of case study designs as implemented today.

In the 1970s, case study increasingly was adopted in the USA and UK in applied disciplines and fields, such as education, programme evaluation and public policy research. 12 As a response to the limitations of quasi-experimental designs for undertaking comprehensive programme evaluations, researchers in these disciplines saw in case studies—either alone or in combination with experimental designs—an opportunity to gain additional insights into the outcomes of programme implementation. In the mid-1980s and early 1990s, the case study approach became recognised as having its own ‘logic of design’ (p46). 13 This period coincides with the publication of a considerable number of influential articles 14–16 and textbooks 4 17 18 on case study research.

These publications were instrumental in shaping contemporary case study practice, yet they reflected divergent views about the nature of case study, including how it should be defined, designed and implemented (see Yazan 19 for a comparison of the perspectives of Yin, Merriam and Stake, three leading case study methodologists). What these publications have in common is that case study revolves around four key features.

First, case study examines a specific phenomenon in detail by performing an indepth and intensive analysis of the selected case. The rationale for case study designs, rather than more expansive designs such as surveys, is that the researcher is interested in investigating the particularity of a case, that is, the unique attributes that define an event, individual, group, organisation or programme. 2 Second, case study is conducted in natural settings where people meet, interact and change their perceptions over time. The use of the case study design is a choice in favour of ‘maintaining the naturalness of the research situation and the natural course of events’ (p177). 20

Third, case study assumes that a case under investigation is entangled with the context in which it is embedded. This context entails a number of interconnected processes that cannot be disassociated from the case, but rather are part of the study. The case study researcher is interested in understanding how and why such processes take place and, consequently, uncovering the interactions between a case and its context. Research questions concerning how and why phenomena occur are particularly appropriate in case study research. 3

Fourth, case study encourages the researcher to use a variety of methods and data types in a single study. 20 21 These can be solely qualitative, solely quantitative or a mixture of both. The latter option allows the researcher to gain a more comprehensive understanding of the case and improve the accuracy of the findings. The four above-mentioned key features of case study are shown in table 1 , using the example of a mixed methods case study evaluation. 22

There are many potential applications for case study research. While often misconstrued as having only an exploratory role, case study research can be used for descriptive and explanatory research (p7–9). 3 Family medicine and community health researchers can use case study research for evaluating a variety of educational programmes, clinical programmes or community programmes.

• Case study illustration from family medicine

In the featured study, Japanese family medicine residents received standardised patient instructor-based training in female breast, pelvic, male genital and prostate examinations as part of an international training collaboration to launch a new family medicine residency programme. 22 From family medicine residents, trainers and staff, the authors collected and analysed data from post-training feedback, semistructured interviews and a web-based questionnaire. While the programme was perceived favourably, they noted barriers to reinforcement in their home training programme, and taboos regarding gender-specific healthcare appear as barriers to implementing a similar programme in the home institution.

• A step-by-step description of the process of carrying out a case study

As shown in table 2 and illustrated using the article by Shultz et al , 22 case study research generally includes 10 steps. While commonly conducted in this order, the steps do not always occur linearly as data collection and analysis may occur over several iterations or implemented with a slightly different order.

Step 1. Conduct a literature review

During the literature review, researchers systematically search for publications, select those most relevant to the study’s purpose, critically appraise them and summarise the major themes. The literature review helps researchers ascertain what is and is not known about the phenomenon under study, delineate the scope and research questions of the study, and develop an academic or practical justification for the study. 23

Step 2. Formulate the research questions

Research questions critically define in operational terms what will be researched and how. They focus the study and play a key role in guiding design decisions. Key decisions include the case selection and choice of a case study design most suitable for the study. According to Fraenkel et al , 24 the key attributes of good research questions are (1) feasibility, (2) clarity, (3) significance, (4) connection to previous research identified in the literature and (5) compliance with ethical research standards.

Step 3. Ensure that a case study is appropriate

Before commencing the study, researchers should ensure that case study design embodies the most appropriate strategy for answering the study questions. The above-noted four key features—in depth examination of phenomena, naturalness, a focus on context and the use of a combination of methods—should be reflected in the research questions as well as subsequent design decisions.

Step 4. Determine the type of case study design

Researchers need to choose a specific case study design. Sometimes, researchers may define the case first (step 5), for example, in a programme evaluation, and the case may need to be defined before determining the type. Yin’s 3 typology is based on two dimensions, whether the study will examine a single case or multiple cases, and whether the study will focus on a single or multiple units of analysis. Figure 1 illustrates these four types of design using a hypothetical example of a programme evaluation. Table 3 shows an example of each type from the literature.

Types of case study designs. 3 21

In type 1 holistic single case design , researchers examine a single programme as the sole unit of analysis. In type 2 embedded single case design , the interest is not exclusively in the programme, but also in its different subunits, including sites, staff and participants. These subunits constitute the range of units of analysis. In type 3 holistic multiple case design , researchers conduct a within and cross-case comparison of two or more programmes, each of which constitutes a single unit of analysis. A major strength of multiple case designs is that they enable researchers to develop an in depth description of each case and to identify patterns of variation and similarity between the cases. Multiple case designs are likely to have stronger internal validity and generate more insightful findings than single case designs. They do this by allowing ‘examination of processes and outcomes across many cases, identification of how individual cases might be affected by different environments, and the specific conditions under which a finding may occur’ (p583). 25 In type 4 embedded multiple case design , a variant of the holistic multiple case design, researchers perform a detailed examination of the subunits of each programme, rather than just examining each case as a whole.

Step 5. Define the boundaries of the case(s) and select the case(s)

Miles et al 26 define a case as ‘a phenomenon of some sort occurring in a bounded context’ (p28). What is and is not the case and how the case fits within its broader context should be explicitly defined. As noted in step 4, this step may occur before choice of the case study type, and the process may actually occur in a back-and-forth fashion. A case can entail an individual, a group, an organisation, an institution or a programme. In this step, researchers delineate the spatial and temporal boundaries of the case, that is, ‘when and where it occurred, and when and what was of interest’ (p390). 9 Aside from ensuring the coherence and consistency of the study, bounding the case ensures that the planned research project is feasible in terms of time and resources. Having access to the case and ensuring ethical research practice are two central considerations in case selection. 1

Step 6. Prepare to collect data

Before beginning the data collection, researchers need a study protocol that describes in detail the methods of data collection. The protocol should emphasise the coherence between the data collection methods and the research questions. According to Yin, 3 a case study protocol should include (1) an overview of the case study, (2) data collection procedures, (3) data collection questions and (4) a guide for the case study report. The protocol should be sufficiently flexible to allow researchers to make changes depending on the context and specific circumstances surrounding each data collection method.

Step 7. Collect and organise the data

While case study is often portrayed as a qualitative approach to research (eg, interviews, focus groups or observations), case study designs frequently rely on multiple data sources, including quantitative data (eg, surveys or statistical databases). A growing number of authors highlight the ways in which the use of mixed methods within case study designs might contribute to developing ‘a more complete understanding of the case’ (p902), 21 shedding light on ‘the complexity of a case’ (p118) 27 or increasing ‘the internal validity of a study’ (p6). 1 Guetterman and Fetters 21 explain how a qualitative case study can also be nested within a mixed methods design (ie, be considered the qualitative component of the design). An interesting strategy for organising multiple data sources is suggested by Yin. 3 He recommends using a case study database in which different data sources (eg, audio files, notes, documents or photographs) are stored for later retrieval or inspection. See guidance from Creswell and Hirose 28 for conducting a survey and qualitative data collection in mixed methods and DeJonckheere 29 on semistructured interviewing.

Step 8. Analyse the data

Bernard and Ryan 30 define data analysis as ‘the search for patterns in data and for ideas that help explain why these patterns are there in the first place’ (p109). Depending on the case study design, analysis of the qualitative and quantitative data can be done concurrently or sequentially. For the qualitative data, the first step of the analysis involves segmenting the data into coding units, ascribing codes to data segments and organising the codes in a coding scheme. 31 Depending on the role of theory in the study, an inductive, data-driven approach can be used where meaning is found in the data, or a deductive, concept-driven approach can be adopted where predefined concepts derived from the literature, or previous research, are used to code the data. 32 The second step involves searching for patterns across codes and subsets of respondents, so major themes are identified to describe, explain or predict the phenomenon under study. Babchuk 33 provides a step-by-step guidance for qualitative analysis in this issue. When conducting a single case study, the within-case analysis yields an in depth, thick description of the case. When the study involves multiple cases, the cross-comparison analysis elicits a description of similarities and divergence between cases and may generate explanations and theoretical predictions regarding other cases. 26

For the quantitative part of the case study, data are entered in statistical software packages for conducting descriptive or inferential analysis. Guetterman 34 provides a step-by-step guidance on basic statistics. In case study designs where both data strands are analysed simultaneously, analytical techniques include pattern matching, explanation building, time-series analysis and creating logic models (p142–167). 3

Step 9. Write the case study report

The case study report should have the following three characteristics. First, the description of the case and its context should be sufficiently comprehensive to allow the reader to understand the complexity of the phenomena under study. 35 Second, the data should be presented in a concise and transparent manner to enable the reader to question, or to re-examine, the findings. 36 Third, the report should be adapted to the interests and needs of its primary audience or audiences (eg, academics, practitioners, policy-makers or funders of research). Yin 3 suggests six formats for organising case study reports, namely linear-analytic, comparative, chronological, theory building, suspense and unsequenced structures. To facilitate case transferability and applicability to other similar contexts, the case study report must include a detailed description of the case.

Step 10. Appraise quality

Although presented as the final step of the case study process, quality appraisal should be considered throughout the study. Multiple criteria and frameworks for appraising the quality of case study research have been suggested in the literature. Yin 3 suggests the following four criteria: construct validity (ie, the extent to which a study accurately measures the concepts that it claims to investigate), internal validity (ie, the strength of the relationship between variables and findings), external validity (ie, the extent to which the findings can be generalised) and reliability (ie, the extent to which the findings can be replicated by other researchers conducting the same study). Yin 37 also suggests using two separate sets of guidelines for conducting case study research and for appraising the quality of case study proposals. Stake 4 presents a 20-item checklist for critiquing case study reports, and Creswell and Poth 38 and Denscombe 39 outline a number of questions to consider. Since these quality frameworks have evolved from different disciplinary and philosophical backgrounds, the researcher’s approach should be coherent with the epistemology of the study. Figure 2 provides a quality appraisal checklist adapted from Creswell and Poth 38 and Denscombe. 39

Checklist for evaluating the quality of a case study. 38 39

The challenges to conducting case study research include rationalising the literature based on literature review, writing the research questions, determining how to bound the case, and choosing among various case study purposes and designs. Factors held in common with other methods include analysing and presenting the findings, particularly with multiple data sources.

Other resources

Resources with more in depth guidance on case study research include Merriam, 17 Stake 4 and Yin. 3 While each reflects a different perspective on case study research, they all provide useful guidance for designing and conducting case studies. Other resources include Creswell and Poth, 38 Swanborn 2 and Tight. 40 For mixed methods case study designs, Creswell and Clark, 27 Guetterman and Fetters, 21 Luck et al , 6 and Plano Clark et al 41 provide guidance. Byrne and Ragin’s 42 The SAGE Handbook of Case-Based Methods and Mills et al ’s 43 Encyclopedia of case study research provide guidance for experienced case study researchers.

• Conclusions

Family medicine and community health researchers engage in a wide variety of clinical, educational, research and administrative programmes. Case study research provides a highly flexible and powerful research tool to evaluate rigorously many of these endeavours and disseminate this information.

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• How to present patient...

How to present patient cases

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• Mary Ni Lochlainn , foundation year 2 doctor 1 ,
• Ibrahim Balogun , healthcare of older people/stroke medicine consultant 1
• 1 East Kent Foundation Trust, UK

A guide on how to structure a case presentation

This article contains...

-History of presenting problem

-Medical and surgical history

-Drugs, including allergies to drugs

-Family history

-Social history

-Review of systems

-Findings on examination, including vital signs and observations

-Differential diagnosis/impression

-Investigations

-Management

Presenting patient cases is a key part of everyday clinical practice. A well delivered presentation has the potential to facilitate patient care and improve efficiency on ward rounds, as well as a means of teaching and assessing clinical competence. 1

The purpose of a case presentation is to communicate your diagnostic reasoning to the listener, so that he or she has a clear picture of the patient’s condition and further management can be planned accordingly. 2 To give a high quality presentation you need to take a thorough history. Consultants make decisions about patient care based on information presented to them by junior members of the team, so the importance of accurately presenting your patient cannot be overemphasised.

As a medical student, you are likely to be asked to present in numerous settings. A formal case presentation may take place at a teaching session or even at a conference or scientific meeting. These presentations are usually thorough and have an accompanying PowerPoint presentation or poster. More often, case presentations take place on the wards or over the phone and tend to be brief, using only memory or short, handwritten notes as an aid.

Everyone has their own presenting style, and the context of the presentation will determine how much detail you need to put in. You should anticipate what information your senior colleagues will need to know about the patient’s history and the care he or she has received since admission, to enable them to make further management decisions. In this article, I use a fictitious case to show how you can structure case presentations, which can be adapted to different clinical and teaching settings (box 1).

Box 1: Structure for presenting patient cases

Presenting problem, history of presenting problem, medical and surgical history.

Drugs, including allergies to drugs

Family history

Social history, review of systems.

Findings on examination, including vital signs and observations

Differential diagnosis/impression

Investigations

Case: tom murphy.

You should start with a sentence that includes the patient’s name, sex (Mr/Ms), age, and presenting symptoms. In your presentation, you may want to include the patient’s main diagnosis if known—for example, “admitted with shortness of breath on a background of COPD [chronic obstructive pulmonary disease].” You should include any additional information that might give the presentation of symptoms further context, such as the patient’s profession, ethnic origin, recent travel, or chronic conditions.

“ Mr Tom Murphy is a 56 year old ex-smoker admitted with sudden onset central crushing chest pain that radiated down his left arm.”

In this section you should expand on the presenting problem. Use the SOCRATES mnemonic to help describe the pain (see box 2). If the patient has multiple problems, describe each in turn, covering one system at a time.

Box 2: SOCRATES—mnemonic for pain

Associations

Time course

Exacerbating/relieving factors

“ The pain started suddenly at 1 pm, when Mr Murphy was at his desk. The pain was dull in nature, and radiated down his left arm. He experienced shortness of breath and felt sweaty and clammy. His colleague phoned an ambulance. He rated the pain 9/10 in severity. In the ambulance he was given GTN [glyceryl trinitrate] spray under the tongue, which relieved the pain to 5/10. The pain lasted 30 minutes in total. No exacerbating factors were noted. Of note: Mr Murphy is an ex-smoker with a 20 pack year history”

Some patients have multiple comorbidities, and the most life threatening conditions should be mentioned first. They can also be categorised by organ system—for example, “has a long history of cardiovascular disease, having had a stroke, two TIAs [transient ischaemic attacks], and previous ACS [acute coronary syndrome].” For some conditions it can be worth stating whether a general practitioner or a specialist manages it, as this gives an indication of its severity.

In a surgical case, colleagues will be interested in exercise tolerance and any comorbidity that could affect the patient’s fitness for surgery and anaesthesia. If the patient has had any previous surgical procedures, mention whether there were any complications or reactions to anaesthesia.

“Mr Murphy has a history of type 2 diabetes, well controlled on metformin. He also has hypertension, managed with ramipril, and gout. Of note: he has no history of ischaemic heart disease (relevant negative) (see box 3).”

Box 3: Relevant negatives

Mention any relevant negatives that will help narrow down the differential diagnosis or could be important in the management of the patient, 3 such as any risk factors you know for the condition and any associations that you are aware of. For example, if the differential diagnosis includes a condition that you know can be hereditary, a relevant negative could be the lack of a family history. If the differential diagnosis includes cardiovascular disease, mention the cardiovascular risk factors such as body mass index, smoking, and high cholesterol.

Highlight any recent changes to the patient’s drugs because these could be a factor in the presenting problem. Mention any allergies to drugs or the patient’s non-compliance to a previously prescribed drug regimen.

To link the medical history and the drugs you might comment on them together, either here or in the medical history. “Mrs Walsh’s drugs include regular azathioprine for her rheumatoid arthritis.”Or, “His regular drugs are ramipril 5 mg once a day, metformin 1g three times a day, and allopurinol 200 mg once a day. He has no known drug allergies.”

If the family history is unrelated to the presenting problem, it is sufficient to say “no relevant family history noted.” For hereditary conditions more detail is needed.

“ Mr Murphy’s father experienced a fatal myocardial infarction aged 50.”

Social history should include the patient’s occupation; their smoking, alcohol, and illicit drug status; who they live with; their relationship status; and their sexual history, baseline mobility, and travel history. In an older patient, more detail is usually required, including whether or not they have carers, how often the carers help, and if they need to use walking aids.

“He works as an accountant and is an ex-smoker since five years ago with a 20 pack year history. He drinks about 14 units of alcohol a week. He denies any illicit drug use. He lives with his wife in a two storey house and is independent in all activities of daily living.”

Do not dwell on this section. If something comes up that is relevant to the presenting problem, it should be mentioned in the history of the presenting problem rather than here.

“Systems review showed long standing occasional lower back pain, responsive to paracetamol.”

Findings on examination

Initially, it can be useful to practise presenting the full examination to make sure you don’t leave anything out, but it is rare that you would need to present all the normal findings. Instead, focus on the most important main findings and any abnormalities.

“On examination the patient was comfortable at rest, heart sounds one and two were heard with no additional murmurs, heaves, or thrills. Jugular venous pressure was not raised. No peripheral oedema was noted and calves were soft and non-tender. Chest was clear on auscultation. Abdomen was soft and non-tender and normal bowel sounds were heard. GCS [Glasgow coma scale] was 15, pupils were equal and reactive to light [PEARL], cranial nerves 1-12 were intact, and he was moving all four limbs. Observations showed an early warning score of 1 for a tachycardia of 105 beats/ min. Blood pressure was 150/90 mm Hg, respiratory rate 18 breaths/min, saturations were 98% on room air, and he was apyrexial with a temperature of 36.8 ºC.”

Differential diagnoses

Mentioning one or two of the most likely diagnoses is sufficient. A useful phrase you can use is, “I would like to rule out,” especially when you suspect a more serious cause is in the differential diagnosis. “History and examination were in keeping with diverticular disease; however, I would like to rule out colorectal cancer in this patient.”

Remember common things are common, so try not to mention rare conditions first. Sometimes it is acceptable to report investigations you would do first, and then base your differential diagnosis on what the history and investigation findings tell you.

“My impression is acute coronary syndrome. The differential diagnosis includes other cardiovascular causes such as acute pericarditis, myocarditis, aortic stenosis, aortic dissection, and pulmonary embolism. Possible respiratory causes include pneumonia or pneumothorax. Gastrointestinal causes include oesophageal spasm, oesophagitis, gastro-oesophageal reflux disease, gastritis, cholecystitis, and acute pancreatitis. I would also consider a musculoskeletal cause for the pain.”

This section can include a summary of the investigations already performed and further investigations that you would like to request. “On the basis of these differentials, I would like to carry out the following investigations: 12 lead electrocardiography and blood tests, including full blood count, urea and electrolytes, clotting screen, troponin levels, lipid profile, and glycated haemoglobin levels. I would also book a chest radiograph and check the patient’s point of care blood glucose level.”

You should consider recommending investigations in a structured way, prioritising them by how long they take to perform and how easy it is to get them done and how long it takes for the results to come back. Put the quickest and easiest first: so bedside tests, electrocardiography, followed by blood tests, plain radiology, then special tests. You should always be able to explain why you would like to request a test. Mention the patient’s baseline test values if they are available, especially if the patient has a chronic condition—for example, give the patient’s creatinine levels if he or she has chronic kidney disease This shows the change over time and indicates the severity of the patient’s current condition.

“To further investigate these differentials, 12 lead electrocardiography was carried out, which showed ST segment depression in the anterior leads. Results of laboratory tests showed an initial troponin level of 85 µg/L, which increased to 1250 µg/L when repeated at six hours. Blood test results showed raised total cholesterol at 7.6 mmol /L and nil else. A chest radiograph showed clear lung fields. Blood glucose level was 6.3 mmol/L; a glycated haemoglobin test result is pending.”

Dependent on the case, you may need to describe the management plan so far or what further management you would recommend.“My management plan for this patient includes ACS [acute coronary syndrome] protocol, echocardiography, cardiology review, and treatment with high dose statins. If you are unsure what the management should be, you should say that you would discuss further with senior colleagues and the patient. At this point, check to see if there is a treatment escalation plan or a “do not attempt to resuscitate” order in place.

“Mr Murphy was given ACS protocol in the emergency department. An echocardiogram has been requested and he has been discussed with cardiology, who are going to come and see him. He has also been started on atorvastatin 80 mg nightly. Mr Murphy and his family are happy with this plan.”

The summary can be a concise recap of what you have presented beforehand or it can sometimes form a standalone presentation. Pick out salient points, such as positive findings—but also draw conclusions from what you highlight. Finish with a brief synopsis of the current situation (“currently pain free”) and next step (“awaiting cardiology review”). Do not trail off at the end, and state the diagnosis if you are confident you know what it is. If you are not sure what the diagnosis is then communicate this uncertainty and do not pretend to be more confident than you are. When possible, you should include the patient’s thoughts about the diagnosis, how they are feeling generally, and if they are happy with the management plan.

“In summary, Mr Murphy is a 56 year old man admitted with central crushing chest pain, radiating down his left arm, of 30 minutes’ duration. His cardiac risk factors include 20 pack year smoking history, positive family history, type 2 diabetes, and hypertension. Examination was normal other than tachycardia. However, 12 lead electrocardiography showed ST segment depression in the anterior leads and troponin rise from 85 to 250 µg/L. Acute coronary syndrome protocol was initiated and a diagnosis of NSTEMI [non-ST elevation myocardial infarction] was made. Mr Murphy is currently pain free and awaiting cardiology review.”

Originally published as: Student BMJ 2017;25:i4406

Competing interests: None declared.

Provenance and peer review: Not commissioned; externally peer reviewed

• ↵ Green EH, Durning SJ, DeCherrie L, Fagan MJ, Sharpe B, Hershman W. Expectations for oral case presentations for clinical clerks: opinions of internal medicine clerkship directors. J Gen Intern Med 2009 ; 24 : 370 - 3 . doi:10.1007/s11606-008-0900-x   pmid:19139965 . OpenUrl CrossRef PubMed Web of Science
• ↵ Olaitan A, Okunade O, Corne J. How to present clinical cases. Student BMJ 2010;18:c1539.
• ↵ Gaillard F. The secret art of relevant negatives, Radiopedia 2016; http://radiopaedia.org/blog/the-secret-art-of-relevant-negatives .