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Is Vaginal Birth Possible after a Caesarean Delivery?

Published on Jul 04, 2014 and last reviewed on Oct 31, 2022   -  6 min read

Abstract

In the earlier days, the norm was 'once a Cesarean, always a Cesarean.' Nowadays, it has changed quite a lot due to the advances in medical science and the awareness of the advantages of normal delivery over Cesarean.

Contents
Is Vaginal Birth Possible after a Caesarean Delivery?

What Is a Vaginal Birth After Cesarean (VBAC)?

Vaginal birth after Cesarean stresses that vaginal delivery is possible even after having a C-section. In Cesarean section, the baby is delivered by making an incision or surgical cut in the belly, which reaches the uterus. The success rate is around 60 to 80% in VBAC. However, few factors decide the success of a vaginal birth following a Cesarean delivery (C-section).

What Is a Trial of Labor After Cesarean (TOLAC)?

A trial of labor is an attempt to deliver vaginally after a C-section. Vaginal birth is tried, and if successful, it results in vaginal birth after delivery. Else, a repeat C-section is done.

  1. Future Pregnancies: Suppose there is a plan for future pregnancies. In that case, a trial of labor is suggested to prevent multiple Cesarean deliveries and their complications like placenta accreta and placenta previa.
  2. Short Recovery Period: After a vaginal delivery, the period of stay in the hospital is comparably reduced. Also, resuming day-to-day activities can happen a lot sooner. Therefore, for better recovery, trials of labor are carried out to optimize the chance of vaginal birth.
  3. Reduce Surgical Complications: A VBAC reduces the chance of complications like a hysterectomy or surgical removal of the uterus and injury to abdominal organs like the bladder and bowel. Also, the risk of developing an infection, excessive bleeding, and deep vein thrombosis is very much reduced after a successful VBAC.
  4. Opportunity for Vaginal Birth: A VBAC gives the women a chance to experience a vaginal birth.

How Is VBAC Different From Normal Vaginal Delivery?

Vaginal delivery after C-section is similar to that of normal vaginal delivery, except that in VBAC, continuous monitoring of the baby's heart rate is done to opt for an emergency repeat C-section if needed.

What Factors Determine the Chances of Vaginal Birth After Cesarean?

  1. Type of Uterine Incision: VBAC is not usually recommended in women with a prior high vertical incision or classical incision due to the risk of uterine rupture. On the other hand, women with low vertical or low transverse incision C-sections are good candidates for VBAC.
  2. Time of Previous Delivery: The risk of uterine rupture is high in people who have had a previous C-section within 18 months.
  3. Previous Vaginal Deliveries: History of vaginal delivery at least once before or after a C-section increases the chance of VBAC.
  4. Number of C-Sections: VBAC is not suggested in people who have had more than two C-sections before.
  5. Uterine Rupture: History of uterine rupture also determines the possibility of VBAC.
  6. Place of Delivery: VBAC should not be planned for home delivery, but it should be scheduled for a center with a facility to go for emergency C-sections if needed.
  7. Induced Labor: A successful VBAC is not possible if there is no spontaneous pain and the labor has to be induced.
  8. Uterine Surgeries: VBAC is not suggested in women with a history of uterine surgeries like surgery for fibroid removal.
  9. Other Health Concerns: Placental problems or having triplets or higher-order multiples contradicts vaginal birth after C-section.

Of all the above, having had a vaginal delivery after a C-section is an essential indicator that you are eligible for vaginal birth.

Why Is the Type of Incision a Crucial Deciding Factor for VBAC?

A C-section leaves a scar on the abdomen and uterus, which makes the uterus prone to rupture when a vaginal delivery is tried after a C-section. Therefore, the type of incision plays a vital role in deciding the possibility of VBAC.

  1. In a low transverse incision, a horizontal cut is made on the lower and thinner part of the uterus. It has a much-reduced risk of uterine rupture and is most preferred.

  2. Low vertical incisions are made vertically on the thinner part of the uterus. They carry a comparatively increased risk than low transverse incisions.

  3. On the other hand, high vertical incisions are indicated for preterm Cesarean deliveries and carry the highest risk of uterine rupture. Therefore, VBAC is almost contraindicated after these types of C-sections.

When Can I Have a Vaginal Birth After Cesarean?

Your chances for a normal delivery after C-section are good if:

When Are My Chances of VBAC Reduced?

Your chances for normal delivery are less if you have the following:

When Is a Vaginal Birth After C-Section Contraindicated?

VBAC (Vaginal Birth After Cesarean) is contraindicated in the following situations:

What Are the Benefits of VBAC?

A vaginal birth following a C-section opens the door for you for future normal deliveries, especially when you plan to have a big family.

What Are the Risks of VBAC?

How Should I Prepare for a Successful VBAC?

Where Should VBAC Be Done?

VBAC must be tried in a center with:

Conclusion:

Vaginal delivery is possible after a Cesarean section, but the possibility depends on several factors. Know about the factors contributing to VBAC and stick to the advice of your healthcare professional at all means. However, do not be bothered about the type of delivery. Your ultimate aim is to have a healthy baby and a healthy you, needless of the path you take to get there.

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Frequently Asked Questions


1.

Is It Risky to Have a Natural Delivery After C-Section?

Natural birth after a C-section may result in risky situations like infection, blood loss, and rare complications like uterine scar rupture, which is detrimental to the mother and fetus.

2.

Is It Possible to Have a Natural Delivery After a C-Section?

It is possible to proceed with a natural birth after a C-section if the pregnancy is healthy and the last C-section performed was of a lower transverse type.

3.

How Many Cesarean Deliveries Is a Woman Allowed to Have?

About the complications and weighing on the mother's health, a woman is recommended to have a maximum of three cesarean deliveries.

4.

Does the C-Section Scar Reopen After Some Years?

Opening a C-section scar, also known as C-section dehiscence, is a rare complication of cesarean births accounting for 0.2 % to 1.5 % of transverse incisions and 4 % to 9 % following a classical incision.

5.

How Much Time Does the C-Section Incision Take To Heal?

Each woman’s healing time varies, but usually, it takes about six weeks to recover from a C-section. The horizontal cut made in the lower abdomen can take weeks to heal completely.

6.

How Risky Are Subsequent Pregnancies After C-Section?

In subsequent pregnancies, although carrying certain risks and complications after a C-section, it is advised not to get pregnant within the first six months of cesarean as it increases the risk of complications.

7.

How Is C-Section Better Than Normal Delivery?

There are specific pros of an elective C-section:
- Decreased risk of incontinence.
- Reduced risk of sexual dysfunction after birth.
- Reduced risk of the baby being oxygen-deprived during delivery.
- Reduced risk of trauma to the baby as seen in vaginal births.

8.

Is the C-Section Scar Painful During Subsequent Pregnancies?

Mothers with an old C-section scar may feel pulling, sharp pinching, or burning pain in subsequent pregnancies.

9.

What Can Be Done to Evade C-Section?

There are certain things a new mother can do during her pregnancy to avoid a cesarean delivery
- Having long latent phase labor.
- Considering 6 cm dilation as active labor rather than 4 cm.
- Allowing women to push for at least two hours in case of returning mothers and three hours or more for first-time mothers.
- Using assistive methods to aid in vaginal deliveries.
- Avoid putting on excessive weight during pregnancy.
- Childbirth classes during pregnancy.
- Pregnancy exercises.
- Avoid labor induction.
- Delaying epidural.
- Repositioning the fetus in case of breech position during delivery.

10.

How Far in Pregnancy Is Safe for VBAC?

Mothers who have crossed 40 weeks of gestation can safely attempt vaginal birth after C-section (VBAC), albeit with a high risk of failure.

11.

What Makes VBACs Fail?

VBACs fail due to prolonged labor. The success rate is high in VBACs when the interval between deliveries is longer with fewer complications. Usually, a gap of 2 to 4 years is considered safe.

12.

How Many Women Give Birth by VBAC After C-Section?

VBAC rates increased from 12.4 % to 12.8 %, then to 12.3 % in 2016, 2017, and 2018 respectively, in women with a history of cesarean delivery.

13.

Are VBACs Considered High-Risk in Pregnancies?

VBACs are considered safe, with a scarce chance of complications if the planned interval between deliveries is more than two years.

14.

How Safe Is Natural Birth After C-Section?

Natural births are considered safe in subsequent pregnancies after C-section, in the case of uncomplicated pregnancies with an interval of more than two years.

15.

In Which Cases, Is VBAC Contraindicated?

A mother is ineligible for VBACs in case of complicated pregnancies and a history of high vertical incisions.

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Last reviewed at:
31 Oct 2022  -  6 min read

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