breech presentation at 13 weeks

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What Is Breech?

When a fetus is delivered buttocks or feet first

• Types of Presentation

Risk Factors

Complications.

Breech concerns the position of the fetus before labor . Typically, the fetus comes out headfirst, but in a breech delivery, the buttocks or feet come out first. This type of delivery is risky for both the pregnant person and the fetus.

This article discusses the different types of breech presentations, risk factors that might make a breech presentation more likely, treatment options, and complications associated with a breech delivery.

Verywell / Jessica Olah

Types of Breech Presentation

During the last few weeks of pregnancy, a fetus usually rotates so that the head is positioned downward to come out of the vagina first. This is called the vertex position.

In a breech presentation, the fetus does not turn to lie in the correct position. Instead, the fetus’s buttocks or feet are positioned to come out of the vagina first.

At 28 weeks of gestation, approximately 20% of fetuses are in a breech position. However, the majority of these rotate to the proper vertex position. At full term, around 3%–4% of births are breech.

The different types of breech presentations include:

• Complete : The fetus’s knees are bent, and the buttocks are presenting first.
• Frank : The fetus’s legs are stretched upward toward the head, and the buttocks are presenting first.
• Footling : The fetus’s foot is showing first.

Signs of Breech

There are no specific symptoms associated with a breech presentation.

Diagnosing breech before the last few weeks of pregnancy is not helpful, since the fetus is likely to turn to the proper vertex position before 35 weeks gestation.

A healthcare provider may be able to tell which direction the fetus is facing by touching a pregnant person’s abdomen. However, an ultrasound examination is the best way to determine how the fetus is lying in the uterus.

Most breech presentations are not related to any specific risk factor. However, certain circumstances can increase the risk for breech presentation.

These can include:

• Previous pregnancies
• Multiple fetuses in the uterus
• An abnormally shaped uterus
• Uterine fibroids , which are noncancerous growths of the uterus that usually appear during the childbearing years
• Placenta previa, a condition in which the placenta covers the opening to the uterus
• Preterm labor or prematurity of the fetus
• Too much or too little amniotic fluid (the liquid that surrounds the fetus during pregnancy)
• Fetal congenital abnormalities

Most fetuses that are breech are born by cesarean delivery (cesarean section or C-section), a surgical procedure in which the baby is born through an incision in the pregnant person’s abdomen.

In rare instances, a healthcare provider may plan a vaginal birth of a breech fetus. However, there are more risks associated with this type of delivery than there are with cesarean delivery. 

Before cesarean delivery, a healthcare provider might utilize the external cephalic version (ECV) procedure to turn the fetus so that the head is down and in the vertex position. This procedure involves pushing on the pregnant person’s belly to turn the fetus while viewing the maneuvers on an ultrasound. This can be an uncomfortable procedure, and it is usually done around 37 weeks gestation.

ECV reduces the risks associated with having a cesarean delivery. It is successful approximately 40%–60% of the time. The procedure cannot be done once a pregnant person is in active labor.

Complications related to ECV are low and include the placenta tearing away from the uterine lining, changes in the fetus’s heart rate, and preterm labor.

ECV is usually not recommended if the:

• Pregnant person is carrying more than one fetus
• Placenta is in the wrong place
• Healthcare provider has concerns about the health of the fetus
• Pregnant person has specific abnormalities of the reproductive system

Recommendations for Previous C-Sections

The American College of Obstetricians and Gynecologists (ACOG) says that ECV can be considered if a person has had a previous cesarean delivery.

During a breech delivery, the umbilical cord might come out first and be pinched by the exiting fetus. This is called cord prolapse and puts the fetus at risk for decreased oxygen and blood flow. There’s also a risk that the fetus’s head or shoulders will get stuck inside the mother’s pelvis, leading to suffocation.

Complications associated with cesarean delivery include infection, bleeding, injury to other internal organs, and problems with future pregnancies.

A healthcare provider needs to weigh the risks and benefits of ECV, delivering a breech fetus vaginally, and cesarean delivery.

In a breech delivery, the fetus comes out buttocks or feet first rather than headfirst (vertex), the preferred and usual method. This type of delivery can be more dangerous than a vertex delivery and lead to complications. If your baby is in breech, your healthcare provider will likely recommend a C-section.

A Word From Verywell

Knowing that your baby is in the wrong position and that you may be facing a breech delivery can be extremely stressful. However, most fetuses turn to have their head down before a person goes into labor. It is not a cause for concern if your fetus is breech before 36 weeks. It is common for the fetus to move around in many different positions before that time.

At the end of your pregnancy, if your fetus is in a breech position, your healthcare provider can perform maneuvers to turn the fetus around. If these maneuvers are unsuccessful or not appropriate for your situation, cesarean delivery is most often recommended. Discussing all of these options in advance can help you feel prepared should you be faced with a breech delivery.

American College of Obstetricians and Gynecologists. If your baby is breech .

TeachMeObGyn. Breech presentation .

MedlinePlus. Breech birth .

Hofmeyr GJ, Kulier R, West HM. External cephalic version for breech presentation at term . Cochrane Database Syst Rev . 2015 Apr 1;2015(4):CD000083. doi:10.1002/14651858.CD000083.pub3

By Christine Zink, MD Dr. Zink is a board-certified emergency medicine physician with expertise in the wilderness and global medicine.

• When is Breech an Issue?

The later in pregnancy a baby is   breech , the more difficult it is for the baby to flip head down. The baby’s size grows in relation to the uterus and there is a smaller percentage of amniotic fluid for the baby to move freely. The more complicated past births were due to fetal position, the earlier I suggest starting to get your muscles unwound and your pelvis aligned. If a previous baby remained either   breech   or   posterior   until birth, I suggest bodywork throughout the pregnancy.

In time, the breech baby’s head becomes heavy enough (between 5-7 months) for gravity to bring the head down in a symmetrical womb. The baby will move head down if there is room or if there is tone in the support to the uterus to direct the baby head down.

Common issues with breech:

• Health of the baby overall
• Safety of the birth
• Safety for the mother facing surgical birth
• Emotions of the birthing parent(s)
• Belly Mapping® Breech
• Flip a Breech
• When Baby Flips Head Down
• Breech & Bicornuate Uterus
• Breech for Providers
• What if My Breech Baby Doesn't Turn?
• Belly Mapping ®️ Method

After Baby Turns

• Head Down is Not Enough
• Sideways/Transverse
• Asynclitism
• Oblique Lie
• Left Occiput Transverse
• Right Occiput Anterior
• Right Occiput Posterior
• Right Occiput Transverse
• Face Presentation
• Left Occiput Anterior
• OP Truths & Myths
• Anterior Placenta
• Body Balancing

When should I be concerned about a breech position?

During the month before 30 weeks, about 15% of babies are breech. Since breech baby’s spine is vertical, the womb is “stretched” upwards. We expect babies to turn head down by 28-32 weeks.

Breech may not be an issue until 32-34 weeks. If you know your womb has an unusual limitation in shape or size, such as a   bicornate uterus then begin body balancing before pregnancy and once 15 weeks in pregnancy. In this case, the baby needs to be head down much earlier so that the uterus still has the room for baby to turn. Every unique womb is unique so these dates are theoretical, not absolute.

The timeline for breech

This is a timeline of what to do and when to do it in order to help a breech baby move head down:

• Before 24-26 weeks, most babies lie diagonally or sideways in the   Transverse Lie position .
• Between 24-29 weeks, most babies turn vertical and some will be breech.
• By 30-32 weeks, most babies flip head down and bottom-up.
• By 34 weeks pregnant, the provider expects the baby to be head down.
• Between 36-37 weeks, a provider may suggest an   external cephalic version .
• Full term is from 37-42 weeks gestation, and about 3-4% of term babies are breech.

The medical model of care addresses the breech position between 36-37 weeks, when baby’s survival outside the womb won’t include special nursery care to breathe or suck. Physicians Oxorn and Foote, however, recommend helping babies turn head down at 34 weeks. Some home birth midwives suggest interacting with a baby at 30-34 weeks to encourage a head-down position (vertex).

Women who have had difficult previous births due to posterior,   asynclitism , or a labor that didn’t progress, may want to begin bodywork and the   Forward-leaning Inversion as soon as the second trimester of pregnancy (after morning sickness is gone and extra things like fetal positioning activities can be thought about).

Here is a general guideline for the average pregnancy:

10-24 weeks gestation

This is the time when fetal position is generally determined, even though the baby’s final position isn’t typically set before 34 weeks gestation. How can this be? The body has a habit, so to speak, of how the soft tissues, ligaments, muscles, and alignment of the pelvis and whole body is set. The baby simply follows this basic pattern. By adding body balancing now, the baby has an increased chance of ideal positioning for labor at 34 weeks and beyond.

24-30 weeks

Routine   good posture   with walking and exercise will help most babies be head down as the third trimester gets underway. A 30-second inversion is good practice for everyone. Unless you have a medical reason not to, please consider the Forward-leaning Inversion. If you have a history of car accidents, falls, uncomfortable pregnancies, hormonal imbalance, or a previous breech or posterior baby, then begin the inversion and body work before or during early pregnancy.

30-34 weeks

After 30 weeks, you can start following our   6-day program for Helping Your Breech Baby   Turn . By 32-34 weeks,   chiropractic adjustments   are suggested. We recommend consulting with one of our   Spinning Babies ® Aware Practitioners . The best time to flip a breech is now.

Oxorn and Foote recommend external version at 34 weeks, but most doctors want to wait for the baby’s lungs and suck reflex to be more developed in case the maneuver goes wrong and starts labor or pulls the placenta off the uterine wall. There is often enough amniotic fluid for an easy flip before 35 weeks.

• Breech Tilt:   Follow the FLI with the   Breech Tilt   for 10-20 minutes. This allows you to tuck your chin while upside down on a similar slanted surface. Use an ironing board against the couch, for instance.
• Open-knee Chest:   Open-knee Chest  has been studied and shown to help breeches flip. I like inversion positions that allow the mother to tuck her own chin. Myofascial workers tell me this relaxes her pelvis, whereas extending the chin tightens the pelvis.
• Professional bodywork:  Acupuncture and Moxibustion both have good statistics for flipping breeches. Find out if there’s a   Spinning Babies ® Aware Practitioner   in your area.
• Therapeutic massage:   There are muscle/fascia attachments at the base of the skull, respiratory diaphragm, inguinal ligament, and even the hip sockets! We are whole organisms, not machines with reproductive parts.
• Chiropractic or Osteopathic: Spinal adjustmentsof the neck do improve pelvic alignment, especially if accompanied by fascial release. Not all chiropractors are trained in soft tissue body work, however. And not all soft tissue work is equal. This is why we promote our Aware Practitioner Workshops for bodyworkers.

Should manual external cephalic version be done earlier?

A few midwives recommend version (manually turning the breech baby to head down) at 30 –31 weeks. Anne Frye, author of Holistic Midwifery, reported a very low incidence of breech at term when her midwifery group manually rotated babies during this gestational age.

Attempting to turn the baby now is over a month before the medical model of turning breeches. Utmost gentleness must be the protective factor. If forcing a baby to turn harms the baby or placenta, the baby is too young to be cared for outside of the Neonatal Intensive Care Unit.

Midwives who turn babies now believe there is less chance of hurting a baby and proceed very carefully, stopping at once if there is resistance. Typically, there is less resistance from the uterus because there is more fluid and the baby is still very small.

Body work is suggested before attempting this, especially for first-time moms or women who had a difficult time with their first birth. There are risks to a manual version, so the baby should be monitored closely in between each 10-30 degrees of rotation.

35-36 weeks

If your baby is breech during this time your doctor or midwife will begin to talk about how to help the baby flip head down, and possibly about scheduling a manual version for 36-37 weeks. Getting body work and having   acupuncture or homeopathy   may help soften the ligaments and a tense uterus to either help the baby flip spontaneously or to allow more success in an attempt at a version.

Moxibustion has its highest success rate this week.

36-37 weeks.

During this time, you can continue with the suggestions in the   “Professional Help”   page. Also, an obstetrician may suggest manually flipping the baby to a head down position at this time. A few midwives will also offer this, perhaps even earlier, at 30-34 weeks.

NOTE: Don’t let someone manually flip your baby without using careful monitoring of the baby’s heartbeat. Accidents can occur, even when there is good intention. The baby must be listened to and the version stopped immediately if the heart rate drops.

External cephalic version near the end of pregnancy

You may also agree to go through with a cephalic version at this time. The baby is in the womb with the cord and placenta and there is a small risk in turning the baby manually. This maneuver should be done with monitoring by experienced professionals, in a setting ready for a cesarean if needed.

There is about a 40-50% chance this will be successful. Sometimes the baby moves easily and sometimes the procedure is painful. I believe it’s important who performs it, and that ligament tightness would make this more uncomfortable. I suggest getting chiropractic, myofascial, acupuncture, homeopathy, or moxibustion (or all of these) before and after the version.

Doing the Three Sisters of Balance SM (or following the Turning Your Breech Baby guidelines) daily beforehand and just before the procedure would be relaxing and helpful. More birth professionals are using our approach in the hours or the week before the procedure and report that fewer procedures are necessary and those that are seem to be easier than average to do when the baby is able to be turned.

38-40 weeks

Sometimes a woman and her caregiver don’t know the baby is breech until this point or until labor. Rarely does a baby flip to breech this late in pregnancy but they can. Parents and providers may learn that baby is breech during a routine bio-physical ultrasound exam during this time or later in pregnancy.

An external cephalic version may yet be successful, depending on the fluid level and the flexibility of the uterus, the baby’s head position and location, a uterine septum, where the placenta is, etc.

It is still possible that the baby flips doing body balancing activities or even labor itself (contractions might be the very action that turns baby in about 1% of breeches). You may find turning easier if you keep doing the activities listed above.

40-41 weeks

Though many breeches are born about 37-39 weeks gestation, some will happily go to 41 or 42 weeks. For a head down baby, 41 weeks and 1 to 3 days is a common time for labor to begin on its own. SStarting labor at this gestation can certainly be normal for a healthy breechling, too.

If the pregnant person has a tendency to be somewhat overweight or lower energy, which can indicate low thyroid function, a longer pregnancy may be more likely. This tendency deserves looking after. Well-nourished and peppy women may also go a full pregnancy length, of course.

Going into labor and then having a planned cesarean is recommend by Dr. Michel Odent in his book, Cesarean. Going into labor spontaneously is safer for the breech vaginal birth, as well. Women who are trying to flip their baby often find it necessary to slow down the efforts and come to terms with a breech birth.

When facing a cesarean, it can be nurturing to you and your baby to plan a cesarean with skin-to-skin, delayed cord clamping, and breastfeeding on the operating room table or in the recovery room. Give yourself some time and compassion to feel your feelings and explore your options to adapt to the options you have available to you.

Postdates (after your due date) with a breech

With a breech, going all the way to 42 weeks may or may not be more of an issue. Some providers will have to end any plans for a vaginal birth by now. Midwifery statutes often limit midwifery care out of the hospital to 37-42 weeks (or 36-43, depending on where you live).

After 42 weeks, the baby’s skull bones are setting up more firmly and a vaginal birth is less favorable. I’ve been to a few breech births after 42 weeks gestation and everything went very well. But, I do sometimes wonder why labor isn’t starting and if metabolism is a reason, especially when there’s been regular bodywork for weeks.

For a person carrying a breech baby who does show signs of low thyroid function or otherwise a “sloshy” metabolism, I am inclined to transfer care to a kind hospital provider at 41.5 weeks. Intelligent and experienced monitoring may rule out issues that arise post dates that may complicate labor. With slow metabolism postdates issues with breech position may need extra attention before 42 weeks.

Continue body balancing and daily stretching but stop inversions for three days. Walk with a stride. See more at https://www.spinningbabies.com/pregnancy-birth/baby-position/breech/when-baby-flips-head-down/

If Baby Does Not Turn

Not every breech baby will turn on their own. Not every attempt at an External Cephalic Version works (It’s often 50-50). Adding body balancing has abundant anecdotal reporting to show success. But this balancing should be individualized if the pregnant person has followed general guidelines closely for 1-2 weeks without success.

Be compassionate to you and your baby. You are both doing the best you can with the resources you have.

Choose your path. Sometimes it may feel like you don’t have a choice. Consider why it feels that way. Perhaps your choice is safety over manner of birth? That’s totally valid. Just because a vaginal birth might be available to some doesn’t mean it is your first choice, too.

Sometimes babies choose, too. The labor goes too fast to do surgery for the birth. Or, the baby doesn’t come into the pelvis and surgical birth is necessary. (Remember reaching in and pulling out the baby is not reasonable if a cesarean is available in the region unless this is a second twin (subsequent triplet) or travel is impossible due to weather, war, or whatever reason. Life is real. Babies don’t follow a script. Be real with your own experience.

Inducing a breech

Inducing a breech is not recommended in out of hospital settings. Even in the hospital, the risk rises. In some areas where breech is common, Pitocin/Syntocin inductions are done with outcomes that are good enough to keep the options open. Induction by herbs is also considered out of scope for breech.

We need to respect the breech and not stress the baby, especially in settings where we don’t have the rescue setup to solve any potential problems.  Try body balancing and see if labor begins on its own. That would be a non-invasive, non-manipulating approach.

The Breech Turned During Labor

It is a rare possibility that the baby flips to head down during labor. I once assisted a midwife who’s laboring mother’s water had released. Her labor was mild and not picking up, so after 24 hours we transferred and found that the baby had flipped. The doctor thought we’d misdiagnosed, but the mother’s abdomen was so thin we could feel the baby’s knuckles and elbow and found the baby in the opposite direction after entering the hospital!

Another mother had Dynamic Body Balancing in early labor with one of Dr. Carol Phillips students who was also a midwife. Her breech baby turned head down during transition phase of labor!

Laboring With a Breech Before The Cesarean

If the plan is to have a cesarean once labor begins, call the hospital and alert them of labor immediately. Go to the hospital right away. Breech births can go quite quickly and you want to be where people are ready to help you. If you plan to have a vaginal birth, don’t delay in getting to your birth location or getting your birth team to you.

While it can be totally normal to have a 24-hour or longer breech birth, many breech labors are quite short. Because the softer bottom is first, it may take you by surprise that you are progressing with such little pain (though some breech births are as painful as head down births). Just don’t base your decision to get to the hospital on your pain level!

A cesarean can be more complicated if the baby is wedged low in the pelvis. That is why there is a recommendation to have the cesarean in early labor. But cesareans are done everyday with head down babies low in the pelvis. Sometimes it’s how it is.

Starting labor in and of itself doesn’t make the surgery more dangerous. Rushing around and doing things in a hurry might. Alert your hospital before labor and again once you start labor. Be firm that you know what you are about and that they need to get the Operating Room ready while you are on your way.

Mostly, a leisurely transition into the hospital can be sustained with a sense of humor and practicality. There can be a sense of calm while you and the staff take the steps to welcome your baby. This is your birth. Be present with how your experience unfolds.

After the birth

While the concern about breech position is during the birthing, when the baby is breech for most of the third trimester, their skull bones become shaped by the inside of the upper womb (the fundus). This isn’t typically an issue but can be noticed.

Craniosacral therapy   can gently (and without using force) reshape the baby’s head, ideally during the month or two after birth. Surgery on baby’s skull is seldom necessary after 3-6 sessions with a Craniosacral therapist. For most breech babies, this issue is not present. I list is here because I have heard some assumptions that can be dispelled.

A question about breech

Email from Wed, Feb 11, 2009:

…I’m 30 weeks and the baby is what I’d describe as   oblique   breech – his head is on my right side next to my belly button, his hips/butt are in my pelvis on the lower left side (my left) and his feet are in front of his face. I think he’s facing forward – towards my belly button. I’ve known this for weeks just because his big head is so hard I always bump that spot on accident. …. my first son was 9 lbs and born posterior, so I’m really hoping this baby is in the ideal position for delivery… so both of these things make me nervous that he won’t move. He has been in this position for a few weeks now. … Anyway, just wondering if I should worry and what, if anything, I can do to help him move now. My Midwife suggested a Chiropractor that can do some adjustments. I’d like to do the couch inversion too. Would it help for me to walk more? Also, should I sleep more on one side than the other? Thanks for your help! Great site!

Gail’s reply:

Hi…. now is a good time to take action, not so much that your baby is breech, but because your first baby was   OP . You see, a pelvic misalignment and/or round ligament spasms (they often go together) can result in either a breech or a   posterior fetal position . So, a breech will often flip to a posterior position and may stay that way unless you resolve the underlying issue. Maternal positioning is often not enough by itself to correct a posterior fetal position when there is a history of previous posterior or breech babies. While certainly most breech babies flip head down, it’s beneficial to help correct the symmetry of your   uterine ligaments   now, while the baby is still small enough to have plenty of room to flip head down once the reason for the previous posterior position is remedied. See some things a Chiropractor can do for breech and posterior by reading   Professional Help .

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Management of Breech Presentation (Green-top Guideline No. 20b)

Summary: The aim of this guideline is to aid decision making regarding the route of delivery and choice of various techniques used during delivery. It does not include antenatal or postnatal care. Information regarding external cephalic version is the topic of the separate Royal College of Obstetricians and Gynaecologists Green-top Guideline No. 20a,  External Cephalic Version and Reducing the Incidence of Term Breech Presentation .

Breech presentation occurs in 3–4% of term deliveries and is more common in preterm deliveries and nulliparous women. Breech presentation is associated with uterine and congenital abnormalities, and has a significant recurrence risk. Term babies presenting by the breech have worse outcomes than cephalic presenting babies, irrespective of the mode of delivery.

A large reduction in the incidence of planned vaginal breech birth followed publication of the Term Breech Trial. Nevertheless, due to various circumstances vaginal breech births will continue. Lack of experience has led to a loss of skills essential for these deliveries. Conversely, caesarean section can has serious long-term consequences.

COVID disclaimer: This guideline was developed as part of the regular updates to programme of Green-top Guidelines, as outlined in our document  Developing a Green-top Guideline: Guidance for developers , and prior to the emergence of COVID-19.

Version history: This is the fourth edition of this guideline.

Please note that the RCOG Guidelines Committee regularly assesses the need to update the information provided in this publication. Further information on this review is available on request.

Developer declaration of interests:

Mr M Griffiths  is a member of Doctors for a Woman's right to Choose on Abortion. He is an unpaid member of a Quality Standards Advisory Committee at NICE, for which he does receive expenses for related travel, accommodation and meals.

Mr LWM Impey  is Director of Oxford Fetal Medicine Ltd. and a member of the International Society of Ultrasound in Obstetrics and Gynecology. He also holds patents related to ultrasound processing, which are of no relevance to the Breech guidelines.

Professor DJ Murphy  provides medicolegal expert opinions in Scotland and Ireland for which she is remunerated.

Dr LK Penna:  None declared.

• Access the PDF version of this guideline on Wiley
• Access the web version of this guideline on Wiley

This page was last reviewed 16 March 2017.

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Breech presentation.

Caron J. Gray ; Meaghan M. Shanahan .

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Last Update: November 6, 2022 .

• Continuing Education Activity

Breech presentation refers to the fetus in the longitudinal lie with the buttocks or lower extremity entering the pelvis first. The three types of breech presentation are frank, complete, and incomplete. In a frank breech, the fetus has flexion of both hips, and the legs are straight with the feet near the fetal face, in a pike position. This activity reviews the cause and pathophysiology of breech presentation and highlights the role of the interprofessional team in its management.

• Determine the pathophysiology of breech presentation.
• Apply the physical exam of a patient with a breech presentation.
• Differentiate the treatment options for breech presentation.
• Communicate the importance of improving care coordination among interprofessional team members to improve outcomes for patients affected by breech presentation.
• Introduction

Breech presentation refers to the fetus in the longitudinal lie with the buttocks or lower extremity entering the pelvis first. The 3 types of breech presentation are frank, complete, and incomplete. In a frank breech, the fetus has flexion of both hips, and the legs are straight with the feet near the fetal face, in a pike position. The complete breech has the fetus sitting with flexion of both hips and both legs in a tuck position. Finally, the incomplete breech can have any combination of 1 or both hips extended, also known as footling (one leg extended) or double footling breech (both legs extended). [1] [2] [3]

Clinical conditions associated with breech presentation may increase or decrease fetal motility or affect the vertical polarity of the uterine cavity. Prematurity, multiple gestations, aneuploidies, congenital anomalies, Mullerian anomalies, uterine leiomyoma, and placental polarity as in placenta previa are most commonly associated with a breech presentation. Also, a previous history of breech presentation at term increases the risk of repeat breech presentation in subsequent pregnancies. [4] [5]  These are discussed in more detail in the pathophysiology section.

• Epidemiology

Breech presentation occurs in 3% to 4% of all term pregnancies. A higher percentage of breech presentations occurs with less advanced gestational age. At 32 weeks, 7% of fetuses are breech, and 25% are breech at 28 weeks or less.

Specifically, following 1 breech delivery, the recurrence rate for the second pregnancy was nearly 10%, and for a subsequent third pregnancy, it was 27%. Some have also described prior cesarean delivery as increasing the incidence of breech presentation twofold.

• Pathophysiology

As mentioned previously, the most common clinical conditions or disease processes that result in breech presentation affect fetal motility or the vertical polarity of the uterine cavity. [6] [7]  Conditions that change the vertical polarity or the uterine cavity or affect the ease or ability of the fetus to turn into the vertex presentation in the third trimester include:

• Mullerian anomalies: Septate uterus, bicornuate uterus, and didelphys uterus 
• Placentation: Placenta previa as the placenta occupies the inferior portion of the uterine cavity. Therefore, the presenting part cannot engage
• Uterine leiomyoma: Larger myomas are mainly located in the lower uterine segment, often intramural or submucosal, and prevent engagement of the presenting part.
• Prematurity
• Aneuploidies and fetal neuromuscular disorders commonly cause hypotonia of the fetus, inability to move effectively
• Congenital anomalies:  Fetal sacrococcygeal teratoma, fetal thyroid goiter
• Polyhydramnios: The fetus is often in an unstable lie, unable to engage
• Oligohydramnios: Fetus is unable to turn to the vertex due to lack of fluid
• Laxity of the maternal abdominal wall: The Uterus falls forward, and the fetus cannot engage in the pelvis.

The risk of cord prolapse varies depending on the type of breech. Incomplete or footling breech carries the highest risk of cord prolapse at 15% to 18%, complete breech is lower at 4% to 6%, and frank breech is uncommon at 0.5%.

• History and Physical

During the physical exam, using the Leopold maneuvers, palpation of a hard, round, mobile structure at the fundus and the inability to palpate a presenting part in the lower abdomen superior to the pubic bone or the engaged breech in the same area, should raise suspicion of a breech presentation.

During a cervical exam, findings may include the lack of a palpable presenting part, palpation of a lower extremity, usually a foot, or for the engaged breech, palpation of the soft tissue of the fetal buttocks may be noted. If the patient has been laboring, caution is warranted as the soft tissue of the fetal buttocks may be interpreted as caput of the fetal vertex. Any of these findings should raise suspicion, and an ultrasound should be performed.

An abdominal exam using the Leopold maneuvers in combination with the cervical exam can diagnose a breech presentation. Ultrasound should confirm the diagnosis. The fetal lie and presenting part should be visualized and documented on ultrasound. If a breech presentation is diagnosed, specific information, including the specific type of breech, the degree of flexion of the fetal head, estimated fetal weight, amniotic fluid volume, placental location, and fetal anatomy review (if not already done previously), should be documented.

• Treatment / Management

Expertise in the delivery of the vaginal breech baby is becoming less common due to fewer vaginal breech deliveries being offered throughout the United States and in most industrialized countries. The Term Breech Trial (TBT), a well-designed, multicenter, international, randomized controlled trial published in 2000, compared planned vaginal delivery to planned cesarean delivery for the term breech infant. The investigators reported that delivery by planned cesarean resulted in significantly lower perinatal mortality, neonatal mortality, and serious neonatal morbidity. Also, the 2 groups had no significant difference in maternal morbidity or mortality. Since that time, the rate of term breech infants delivered by planned cesarean has increased dramatically. Follow-up studies to the TBT have been published looking at maternal morbidity and outcomes of the children at 2 years. Although these reports did not show any significant difference in the risk of death and neurodevelopmental, these studies were felt to be underpowered. [8] [9] [10] [11]

Since the TBT, many authors have argued that there are still some specific situations in that vaginal breech delivery is a potential, safe alternative to a planned cesarean. Many smaller retrospective studies have reported no difference in neonatal morbidity or mortality using these criteria.

The initial criteria used in these reports were similar: gestational age greater than 37 weeks, frank or complete breech presentation, no fetal anomalies on ultrasound examination, adequate maternal pelvis, and estimated fetal weight between 2500 g and 4000 g. In addition, the protocol presented by 1 report required documentation of fetal head flexion and adequate amniotic fluid volume, defined as a 3-cm vertical pocket. Oxytocin induction or augmentation was not offered, and strict criteria were established for normal labor progress. CT pelvimetry did determine an adequate maternal pelvis.

Despite debate on both sides, the current recommendation for the breech presentation at term includes offering an external cephalic version (ECV) to those patients who meet the criteria, and for those who are not candidates or decline external cephalic version, a planned cesarean section for delivery sometime after 39 weeks.

Regarding the premature breech, gestational age determines the mode of delivery. Before 26 weeks, there is a lack of quality clinical evidence to guide the mode of delivery. One large retrospective cohort study recently concluded that from 28 to 31 6/7 weeks, there is a significant decrease in perinatal morbidity and mortality in a planned cesarean delivery versus intended vaginal delivery, while there is no difference in perinatal morbidity and mortality in gestational age 32 to 36 weeks. Of note is that no prospective clinical trials examine this issue due to a lack of recruitment.

• Differential Diagnosis

The differential diagnoses for the breech presentation include the following:

• Face and brow presentation
• Fetal anomalies
• Fetal death
• Grand multiparity
• Multiple pregnancies
• Oligohydramnios
• Pelvis Anatomy
• Preterm labor
• Primigravida
• Uterine anomalies
• Pearls and Other Issues

In light of the decrease in planned vaginal breech deliveries, thus the decrease in expertise in managing this clinical scenario, it is prudent that policies requiring simulation and instruction in the delivery technique for vaginal breech birth are established to care for the emergency breech vaginal delivery.

• Enhancing Healthcare Team Outcomes

A breech delivery is usually managed by an obstetrician, labor, delivery nurse, anesthesiologist, and neonatologist. The ultimate decision rests on the obstetrician. To prevent complications, today, cesarean sections are performed, and experience with vaginal deliveries of breech presentation is limited. For healthcare workers including the midwife who has no experience with a breech delivery, it is vital to communicate with an obstetrician, otherwise one risks litigation if complications arise during delivery. [12] [13] [14]

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Disclosure: Caron Gray declares no relevant financial relationships with ineligible companies.

Disclosure: Meaghan Shanahan declares no relevant financial relationships with ineligible companies.

This book is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ), which permits others to distribute the work, provided that the article is not altered or used commercially. You are not required to obtain permission to distribute this article, provided that you credit the author and journal.

• Cite this Page Gray CJ, Shanahan MM. Breech Presentation. [Updated 2022 Nov 6]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-.

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• [What effect does leg position in breech presentation have on mode of delivery and early neonatal morbidity?]. [Z Geburtshilfe Neonatol. 1997] [What effect does leg position in breech presentation have on mode of delivery and early neonatal morbidity?]. Krause M, Fischer T, Feige A. Z Geburtshilfe Neonatol. 1997 Jul-Aug; 201(4):128-35.
• The effect of intra-uterine breech position on postnatal motor functions of the lower limbs. [Early Hum Dev. 1993] The effect of intra-uterine breech position on postnatal motor functions of the lower limbs. Sival DA, Prechtl HF, Sonder GH, Touwen BC. Early Hum Dev. 1993 Mar; 32(2-3):161-76.
• The influence of the fetal leg position on the outcome in vaginally intended deliveries out of breech presentation at term - A FRABAT prospective cohort study. [PLoS One. 2019] The influence of the fetal leg position on the outcome in vaginally intended deliveries out of breech presentation at term - A FRABAT prospective cohort study. Jennewein L, Allert R, Möllmann CJ, Paul B, Kielland-Kaisen U, Raimann FJ, Brüggmann D, Louwen F. PLoS One. 2019; 14(12):e0225546. Epub 2019 Dec 2.
• Review Breech vaginal delivery at or near term. [Semin Perinatol. 2003] Review Breech vaginal delivery at or near term. Tunde-Byass MO, Hannah ME. Semin Perinatol. 2003 Feb; 27(1):34-45.
• Review [Breech Presentation: CNGOF Guidelines for Clinical Practice - Epidemiology, Risk Factors and Complications]. [Gynecol Obstet Fertil Senol. 2...] Review [Breech Presentation: CNGOF Guidelines for Clinical Practice - Epidemiology, Risk Factors and Complications]. Mattuizzi A. Gynecol Obstet Fertil Senol. 2020 Jan; 48(1):70-80. Epub 2019 Nov 1.

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• Labor & Delivery

What Does It Mean to Have a Breech Baby?

You’re almost full term and the finish line is approaching, when suddenly your OB or midwife informs you that baby is breech—plot twist! If baby is in a breech position, it means their feet or bottom is pointed toward your cervix rather than their head. You’ve just encountered an early example of a universal truth in parenting: Few things ever go as perfectly as you planned.

A breech birth often means a c-section delivery is in store for you, and that can feel disappointing and worrisome, especially if you’ve been hoping to deliver vaginally. Deep breath— you may still have options; your doctor will talk you through everything well before the big day comes. In the meantime, it’s helpful to get a better grasp on all things breech baby. Want to know how to tell if baby is breech, what the position means for your pregnancy, how it affects delivery and ways your doctor (and you!) can try to turn baby? Read on for the full lowdown.

What Is a Breech Baby?

In the last few weeks of pregnancy, most babies move in the womb so that their heads are facing down, positioned to come out of the vagina first during delivery. But if baby is breech, their head is not approaching the birth canal; rather, it’s their feet or bottom that’s poised to come out first.

Types of breech positions

There are three different types of breech positions, according to the American Pregnancy Association :

• Complete. Baby’s buttocks are pointing down and legs are crossed beneath it
• Frank. Baby’s bottom is positioned down and legs are pointed up toward the head
• Footling. Baby has one leg pointed toward the cervix, poised to deliver before the rest of their body. “There’s also a double footling breech, where the baby’s feet and legs are facing down toward the cervix,” says Elizabeth Deckers , MD, director of the maternal quality and safety program at Hartford HealthCare.

Baby could also be in a transverse lie position (occasionally referred to as a transverse breech position). This means that they’re horizontal across the uterus instead of vertical.

What percentage of babies are breech?

According to the American Pregnancy Association, approximately 1 out of every 25 full-term births involves a baby in a breech position. That means roughly 4 percent of babies have their bottom and/or feet pointed down toward the birth canal.

Why a Breech Position Can Be a Concern

Your doctor won’t be too concerned if baby is in a breech position throughout most of your pregnancy. In fact, it’s likely that at some point in your second or early third trimester, baby will be breech. At this early stage, though, baby is smaller and has more room to move around and turn, notes Deckers.

As baby grows and your due date nears, a breech position becomes slightly more concerning. For starters, there’s some evidence linking a breech presentation—and its tendency to reduce the amount of space in the womb—with hip dysplasia , a condition where the ball and socket joint of baby’s hip doesn’t properly form.

Your doctor or midwife may raise a red flag if baby is in breech position at 36 weeks or later. At this point, they’ll probably start talking about the potential need for a c-section. “Vaginal breech delivery is no longer commonly done in the US because about 20 years ago there was a large, well-designed trial that showed there was more risk to the fetus of going through a vaginal breech delivery versus being born by a c-section,” says Deckers. The trial showed that breech babies born vaginally were more likely to have fetal fractures and a harder time getting out of the birth canal, says Amber Samuel , MD, medical director of Obstetrix Maternal-Fetal Medicine Specialists of Houston. Deckers reiterates this, noting that most babies in the US identified as breech will be born via c-section, as doctors “believe it’s safer in the short run for baby.”

What Causes a Breech Pregnancy?

Don’t beat yourself up or worry that you did something wrong in pregnancy to put baby into a breech position. The truth is there’s usually no rhyme or reason to explain baby’s breech presentation, says Samuel. That said, if you have a uterine anomaly, where your uterus is wider at the top or generally more narrow, it may play a role, she says. “If the shape is abnormal, some babies get stuck,” she says. Having too much amniotic fluid around baby might also be a potential factor.

The American College of Obstetricians and Gynecologists (ACOG) lists other factors that might contribute to baby being breech: you’ve been pregnant before, you’re expecting twins or multiples, you have placenta previa (where your placenta is covering part of your uterine opening) or baby is preterm . Suffice it to say, though, that these potential breech baby causes are out of your control.

How to Tell If Baby Is Breech

You might be able to detect that baby is breech if you feel them kick low near your cervix or feel their head under your ribs, says Deckers. Samuel notes that some moms who’ve had babies before are really good at determining how and where they’re positioned.

Doctors gauge baby’s position by placing their hands on different parts of your belly to feel where fetal parts are, a technique known as Leopold’s maneuvers, explains Samuel. They may also perform a cervical exam to see if they can feel any presenting parts. Sometime around 36 or 37 weeks, they’ll confirm baby’s position with an ultrasound.

What to Expect from a Breech Pregnancy

You may not know if or when baby is in a breech position. Earlier on in your pregnancy, when they’re smaller and have more room in the womb, they may flip all around; roughly 20 percent of babies are breech at 28 weeks, says Samuel. If you discover that your little acrobat is breech at this stage, don’t panic; there’s still more than enough time for them to flip into the preferred position (and then possibly do a few more rotations).

Are breech babies more painful to carry?

The good news: Breech presentation doesn’t typically cause discomfort or pain during pregnancy, Samuel says. Pain is more likely related to “prior scar tissue, the size of your baby and your pregnancy history,” she adds.

What to Expect from a Breech Delivery

There is a possibility for a vaginal breech birth under the right circumstances. Deckers notes that you may be a candidate if baby is in a frank or complete breech presentation and your pelvic structure is adequate for vaginal birth—and if your hospital has guidelines in place for a planned vaginal breech delivery. Unfortunately, the risk of the umbilical cord falling through the cervix is too high with a double footling breech; there’s also a higher risk that baby will get stuck during delivery, which can cause birth asphyxia. Of course, you’ll also want to ensure that your doctor has a lot of experience with vaginal breech delivery and that your hospital will allow it.

If baby is in a breech position beyond 36 weeks and your doctor feels that a vaginal birth is too risky, they’ll likely recommend that you allow them to try turning baby— more on that soon . If that’s not successful, you’ll be scheduled for a c-section, says Samuel.

Having twins where one is breech changes the game a little too. If the baby that’s poised to come out first is breech, you’ll have to deliver via c-section, says Deckers. But if the first baby is head down and second is not, you and your OB have three options: deliver both via c-section; deliver the first baby vaginally and then attempt to turn the second one to deliver vaginally (if it’s unsuccessful, you’ll proceed with a c-section) or deliver the first vaginally and then do a breech extraction of the second baby (your OB will reach inside to grasp baby’s feet and pull them down.)

“The ability to do a safe breech extraction depends on the gestational age of the babies, how well the mother and babies are tolerating labor, the size of the babies and a provider with experience in performing this procedure,” says Deckers.

How to Turn a Breech Baby

Many parents want to have a vaginal birth; what’s more, they know that a c-section is a major surgery with inherent risks. To that end, before scheduling a c-section, most doctors will suggest trying an external cephalic version (ECV), which is an attempt to turn baby from the outside.

First you’ll be given medication to relax your uterus; don’t worry, your doctor will continually monitor baby. “One hand elevates the fetal breech out of the pelvis and you push up and away from the pelvis,” says Samuel. “The other hand is on the back of baby’s head to induce them to turn over—it looks like an aggressive belly massage.”

Your doctor will push baby forward before attempting a backward roll. “You can tell pretty early into it whether it’s going to work or not—some babies are ready to flip, some aren’t,” says Samuel. “We try not to struggle too much with it.”

External cephalic versions are successful roughly 58 percent of the time, says Deckers, although there’s always the chance that baby will flip back to breech on their own. If the turning is successful and you’re at 39 weeks, you can choose to be induced. If it didn’t work, you’ll be scheduled for a c-section. ECVs should only be performed in hospitals equipped to perform emergency c-sections ; risks of the procedure, which are rare, include bleeding from the placenta, rupture of membranes and going into labor, says Samuel.

It’s also worth noting that not every mom is a candidate for an EVC. If you’re having multiples or there’s a problem with placental position, an EVC is too risky, according to the ACOG.

Safe ways to try to turn a breech baby at home

If you prefer to try to make things happen on your own, there are a few things you can do to help turn a breech baby from the comfort of your home. Deckers notes, though, that research on DIY techniques hasn’t provided strong enough evidence to prove that they really work.

A little bit of gentle prenatal yoga may help. One pose to practice? Deckers says some moms try “a head down/knee-to-chest position.” You can also assume a few different sleeping positions to turn a breech baby: “Mothers can try positional things like elevating your pelvis,” she says. Finally, Deckers mentions two Eastern medicine techniques that many moms actively seek out: acupuncture and moxibustion, a therapy that involves waving burning dried plant bundles over specific parts of the body to encourage baby to turn on their own. These methods have been long used, but she points out that the efficacy of these methods haven’t been proven in trials, so “the data isn’t compelling enough to say this is something you should do.”

What to Expect for a Breech Baby After Birth

If baby is presenting breech and you and your doctor decide to move forward with a vaginal delivery, there are some potential complications to be aware of that could ultimately affect baby’s health and well being.

It’s possible for baby’s head or shoulders to get wedged against your pelvic bones; a prolapsed umbilical cord could also decrease blood flow and cut off baby’s oxygen supply, explains the ACOG. That said, even a planned c-section comes with its own set of risks.

Welcoming a healthy baby into the world is the ultimate goal, regardless of how they’re delivered. Interestingly, babies who’ve been in breech presentation and are delivered via c-section tend to have nicely shaped heads because there’s none of the swelling and other head-shifting changes that occur in babies delivered through the birth canal, notes Deckers.

Do breech babies have problems later in life?

Sometimes babies who were breech have issues with their hips, as having one or both legs extended in a partially straight position rather than crossed can prevent a baby’s hip socket from developing properly. If your child was breech, Deckers recommends following up with your pediatrician.

Having a breech baby was probably not in your original birth plan. Your stubborn little one may turn before their grand debut, or they may—quite literally—put their foot down and refuse to budge. Either way, talk to your doctor about any concerns. And remember, the good news is that baby is coming soon, either way!

Please note: The Bump and the materials and information it contains are not intended to, and do not constitute, medical or other health advice or diagnosis and should not be used as such. You should always consult with a qualified physician or health professional about your specific circumstances.

Plus, more from The Bump:

What to Expect During Your C-Section Recovery

The Best Prenatal Poses for Better Sleep

How to Care for Your C-Section Scar

Elizabeth Deckers , MD, is the director of the maternal quality and safety program at Hartford HealthCare. She received her medical degree from the University of Connecticut School of Medicine in Farmington.

Amber Samuel , MD, is the medical director of Obstetrix Maternal-Fetal Medicine Specialists of Houston. She earned her medical degree at Baylor College of Medicine in Houston, Texas.

American Pregnancy Association, Breech Presentation

Lancet, Planned caesarean section versus planned vaginal birth for breech presentation at term: a randomised multicentre trial. Term Breech Trial Collaborative Group , October 2000

American College of Obstetricians and Gynecologists (ACOG), If Your Baby Is Breech

Learn how we ensure the accuracy of our content through our editorial and medical review process .

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Fetal Presentation, Position, and Lie (Including Breech Presentation)

• Variations in Fetal Position and Presentation |

During pregnancy, the fetus can be positioned in many different ways inside the mother's uterus. The fetus may be head up or down or facing the mother's back or front. At first, the fetus can move around easily or shift position as the mother moves. Toward the end of the pregnancy the fetus is larger, has less room to move, and stays in one position. How the fetus is positioned has an important effect on delivery and, for certain positions, a cesarean delivery is necessary. There are medical terms that describe precisely how the fetus is positioned, and identifying the fetal position helps doctors to anticipate potential difficulties during labor and delivery.

Presentation refers to the part of the fetus’s body that leads the way out through the birth canal (called the presenting part). Usually, the head leads the way, but sometimes the buttocks (breech presentation), shoulder, or face leads the way.

Position refers to whether the fetus is facing backward (occiput anterior) or forward (occiput posterior). The occiput is a bone at the back of the baby's head. Therefore, facing backward is called occiput anterior (facing the mother’s back and facing down when the mother lies on her back). Facing forward is called occiput posterior (facing toward the mother's pubic bone and facing up when the mother lies on her back).

Lie refers to the angle of the fetus in relation to the mother and the uterus. Up-and-down (with the baby's spine parallel to mother's spine, called longitudinal) is normal, but sometimes the lie is sideways (transverse) or at an angle (oblique).

For these aspects of fetal positioning, the combination that is the most common, safest, and easiest for the mother to deliver is the following:

Head first (called vertex or cephalic presentation)

Facing backward (occiput anterior position)

Spine parallel to mother's spine (longitudinal lie)

Neck bent forward with chin tucked

Arms folded across the chest

If the fetus is in a different position, lie, or presentation, labor may be more difficult, and a normal vaginal delivery may not be possible.

Variations in fetal presentation, position, or lie may occur when

The fetus is too large for the mother's pelvis (fetopelvic disproportion).

The uterus is abnormally shaped or contains growths such as fibroids .

The fetus has a birth defect .

There is more than one fetus (multiple gestation).

Position and Presentation of the Fetus

Variations in fetal position and presentation.

Some variations in position and presentation that make delivery difficult occur frequently.

Occiput posterior position

In occiput posterior position (sometimes called sunny-side up), the fetus is head first (vertex presentation) but is facing forward (toward the mother's pubic bone—that is, facing up when the mother lies on her back). This is a very common position that is not abnormal, but it makes delivery more difficult than when the fetus is in the occiput anterior position (facing toward the mother's spine—that is facing down when the mother lies on her back).

When a fetus faces up, the neck is often straightened rather than bent,which requires more room for the head to pass through the birth canal. Delivery assisted by a vacuum device or forceps or cesarean delivery may be necessary.

Breech presentation

In breech presentation, the baby's buttocks or sometimes the feet are positioned to deliver first (before the head).

When delivered vaginally, babies that present buttocks first are more at risk of injury or even death than those that present head first.

The reason for the risks to babies in breech presentation is that the baby's hips and buttocks are not as wide as the head. Therefore, when the hips and buttocks pass through the cervix first, the passageway may not be wide enough for the head to pass through. In addition, when the head follows the buttocks, the neck may be bent slightly backwards. The neck being bent backward increases the width required for delivery as compared to when the head is angled forward with the chin tucked, which is the position that is easiest for delivery. Thus, the baby’s body may be delivered and then the head may get caught and not be able to pass through the birth canal. When the baby’s head is caught, this puts pressure on the umbilical cord in the birth canal, so that very little oxygen can reach the baby. Brain damage due to lack of oxygen is more common among breech babies than among those presenting head first.

In a first delivery, these problems may occur more frequently because a woman’s tissues have not been stretched by previous deliveries. Because of risk of injury or even death to the baby, cesarean delivery is preferred when the fetus is in breech presentation, unless the doctor is very experienced with and skilled at delivering breech babies or there is not an adequate facility or equipment to safely perform a cesarean delivery.

Breech presentation is more likely to occur in the following circumstances:

Labor starts too soon (preterm labor).

The uterus is abnormally shaped or contains abnormal growths such as fibroids .

Other presentations

In face presentation, the baby's neck arches back so that the face presents first rather than the top of the head.

In brow presentation, the neck is moderately arched so that the brow presents first.

Usually, fetuses do not stay in a face or brow presentation. These presentations often change to a vertex (top of the head) presentation before or during labor. If they do not, a cesarean delivery is usually recommended.

In transverse lie, the fetus lies horizontally across the birth canal and presents shoulder first. A cesarean delivery is done, unless the fetus is the second in a set of twins. In such a case, the fetus may be turned to be delivered through the vagina.

Copyright © 2024 Merck & Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved.

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Breech Births

In the last weeks of pregnancy, a baby usually moves so his or her head is positioned to come out of the vagina first during birth. This is called a vertex presentation. A breech presentation occurs when the baby’s buttocks, feet, or both are positioned to come out first during birth. This happens in 3–4% of full-term births.

What are the different types of breech birth presentations?

• Complete breech: Here, the buttocks are pointing downward with the legs folded at the knees and feet near the buttocks.
• Frank breech: In this position, the baby’s buttocks are aimed at the birth canal with its legs sticking straight up in front of his or her body and the feet near the head.
• Footling breech: In this position, one or both of the baby’s feet point downward and will deliver before the rest of the body.

What causes a breech presentation?

The causes of breech presentations are not fully understood. However, the data show that breech birth is more common when:

• You have been pregnant before
• In pregnancies of multiples
• When there is a history of premature delivery
• When the uterus has too much or too little amniotic fluid
• When there is an abnormally shaped uterus or a uterus with abnormal growths, such as fibroids
• The placenta covers all or part of the opening of the uterus placenta previa

How is a breech presentation diagnosed?

A few weeks prior to the due date, the health care provider will place her hands on the mother’s lower abdomen to locate the baby’s head, back, and buttocks. If it appears that the baby might be in a breech position, they can use ultrasound or pelvic exam to confirm the position. Special x-rays can also be used to determine the baby’s position and the size of the pelvis to determine if a vaginal delivery of a breech baby can be safely attempted.

Can a breech presentation mean something is wrong?

Even though most breech babies are born healthy, there is a slightly elevated risk for certain problems. Birth defects are slightly more common in breech babies and the defect might be the reason that the baby failed to move into the right position prior to delivery.

Can a breech presentation be changed?

It is preferable to try to turn a breech baby between the 32nd and 37th weeks of pregnancy . The methods of turning a baby will vary and the success rate for each method can also vary. It is best to discuss the options with the health care provider to see which method she recommends.

Medical Techniques

External Cephalic Version (EVC)  is a non-surgical technique to move the baby in the uterus. In this procedure, a medication is given to help relax the uterus. There might also be the use of an ultrasound to determine the position of the baby, the location of the placenta and the amount of amniotic fluid in the uterus.

Gentle pushing on the lower abdomen can turn the baby into the head-down position. Throughout the external version the baby’s heartbeat will be closely monitored so that if a problem develops, the health care provider will immediately stop the procedure. ECV usually is done near a delivery room so if a problem occurs, a cesarean delivery can be performed quickly. The external version has a high success rate and can be considered if you have had a previous cesarean delivery.

ECV will not be tried if:

• You are carrying more than one fetus
• There are concerns about the health of the fetus
• You have certain abnormalities of the reproductive system
• The placenta is in the wrong place
• The placenta has come away from the wall of the uterus ( placental abruption )

Complications of EVC include:

• Prelabor rupture of membranes
• Changes in the fetus’s heart rate
• Placental abruption
• Preterm labor

Vaginal delivery versus cesarean for breech birth?

Most health care providers do not believe in attempting a vaginal delivery for a breech position. However, some will delay making a final decision until the woman is in labor. The following conditions are considered necessary in order to attempt a vaginal birth:

• The baby is full-term and in the frank breech presentation
• The baby does not show signs of distress while its heart rate is closely monitored.
• The process of labor is smooth and steady with the cervix widening as the baby descends.
• The health care provider estimates that the baby is not too big or the mother’s pelvis too narrow for the baby to pass safely through the birth canal.
• Anesthesia is available and a cesarean delivery possible on short notice

What are the risks and complications of a vaginal delivery?

In a breech birth, the baby’s head is the last part of its body to emerge making it more difficult to ease it through the birth canal. Sometimes forceps are used to guide the baby’s head out of the birth canal. Another potential problem is cord prolapse . In this situation the umbilical cord is squeezed as the baby moves toward the birth canal, thus slowing the baby’s supply of oxygen and blood. In a vaginal breech delivery, electronic fetal monitoring will be used to monitor the baby’s heartbeat throughout the course of labor. Cesarean delivery may be an option if signs develop that the baby may be in distress.

When is a cesarean delivery used with a breech presentation?

Most health care providers recommend a cesarean delivery for all babies in a breech position, especially babies that are premature. Since premature babies are small and more fragile, and because the head of a premature baby is relatively larger in proportion to its body, the baby is unlikely to stretch the cervix as much as a full-term baby. This means that there might be less room for the head to emerge.

Want to Know More?

• Creating Your Birth Plan
• Labor & Birth Terms to Know
• Cesarean Birth After Care

Compiled using information from the following sources:

• ACOG: If Your Baby is Breech
• William’s Obstetrics Twenty-Second Ed. Cunningham, F. Gary, et al, Ch. 24.
• Danforth’s Obstetrics and Gynecology Ninth Ed. Scott, James R., et al, Ch. 21.

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Fetal Presentation, Position, and Lie (Including Breech Presentation)

Abnormal fetal lie or presentation may occur due to fetal size, fetal anomalies, uterine structural abnormalities, multiple gestation, or other factors. Diagnosis is by examination or ultrasonography. Management is with physical maneuvers to reposition the fetus, operative vaginal delivery , or cesarean delivery .

• Key Points |

Terms that describe the fetus in relation to the uterus, cervix, and maternal pelvis are

Fetal presentation: Fetal part that overlies the maternal pelvic inlet; vertex (cephalic), face, brow, breech, shoulder, funic (umbilical cord), or compound (more than one part, eg, shoulder and hand)

Fetal position: Relation of the presenting part to an anatomic axis; for vertex presentation, occiput anterior, occiput posterior, occiput transverse

Fetal lie: Relation of the fetus to the long axis of the uterus; longitudinal, oblique, or transverse

Normal fetal lie is longitudinal, normal presentation is vertex, and occiput anterior is the most common position.

Abnormal fetal lie, presentation, or position may occur with

Fetopelvic disproportion (fetus too large for the pelvic inlet)

Fetal congenital anomalies

Uterine structural abnormalities (eg, fibroids, synechiae)

Multiple gestation

Several common types of abnormal lie or presentation are discussed here.

Transverse lie

Fetal position is transverse, with the fetal long axis oblique or perpendicular rather than parallel to the maternal long axis. Transverse lie is often accompanied by shoulder presentation, which requires cesarean delivery.

Breech presentation

There are several types of breech presentation.

Frank breech: The fetal hips are flexed, and the knees extended (pike position).

Complete breech: The fetus seems to be sitting with hips and knees flexed.

Single or double footling presentation: One or both legs are completely extended and present before the buttocks.

Types of breech presentations

Breech presentation makes delivery difficult ,primarily because the presenting part is a poor dilating wedge. Having a poor dilating wedge can lead to incomplete cervical dilation, because the presenting part is narrower than the head that follows. The head, which is the part with the largest diameter, can then be trapped during delivery.

Additionally, the trapped fetal head can compress the umbilical cord if the fetal umbilicus is visible at the introitus, particularly in primiparas whose pelvic tissues have not been dilated by previous deliveries. Umbilical cord compression may cause fetal hypoxemia.

Predisposing factors for breech presentation include

Preterm labor

Uterine abnormalities

Fetal anomalies

If delivery is vaginal, breech presentation may increase risk of

Umbilical cord prolapse

Birth trauma

Perinatal death

Face or brow presentation

In face presentation, the head is hyperextended, and position is designated by the position of the chin (mentum). When the chin is posterior, the head is less likely to rotate and less likely to deliver vaginally, necessitating cesarean delivery.

Brow presentation usually converts spontaneously to vertex or face presentation.

Occiput posterior position

The most common abnormal position is occiput posterior.

The fetal neck is usually somewhat deflexed; thus, a larger diameter of the head must pass through the pelvis.

Progress may arrest in the second phase of labor. Operative vaginal delivery or cesarean delivery is often required.

Position and Presentation of the Fetus

If a fetus is in the occiput posterior position, operative vaginal delivery or cesarean delivery is often required.

In breech presentation, the presenting part is a poor dilating wedge, which can cause the head to be trapped during delivery, often compressing the umbilical cord.

For breech presentation, usually do cesarean delivery at 39 weeks or during labor, but external cephalic version is sometimes successful before labor, usually at 37 or 38 weeks.

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