Treatment Overview
A vaginal delivery is the birth of a fetus through the mother's
birth canal, or vagina. The Society of Obstetricians and Gynaecologists of Canada (SOGC) now recommends that a fetus in the breech position at term be delivery by caesarean section (C-section).1 Breech infants delivered vaginally have a
higher risk of injury or complications than those delivered by
caesarean. About 5 of every 100 have serious problems after vaginal
birth. (This means that 95 of every 100 newborns have no serious problems from
vaginal breech birth.) To compare, less than 1 of every 100 breech infants have
serious problems from caesarean delivery.2
Under unusual circumstances, such as when a second twin is breech or a
breech vaginal birth is progressing quickly, a caesarean is neither recommended
nor possible.
There are several different types of vaginal breech deliveries.
- The delivery can occur without help from a
health professional (spontaneous breech birth). During a spontaneous breech
birth, the fetus comes out of the vagina without problems. The health
professional just supports the fetus's body as it emerges from the birth
canal.
- A health professional may need to help deliver the upper
part of the fetus's body (partial breech extraction). During a partial breech
extraction, a health professional pulls gently downward on the fetus and
rotates its body as needed to deliver the shoulders, arms, and
head.
- Occasionally, a health professional may need to help the
fetus during the entire delivery (total breech extraction). This is usually
done only when the fetus is having problems and needs to be delivered as
quickly as possible.
During a partial or total breech extraction, the health
professional may need to reach into the birth canal in order to move part of
the fetus into a better position for delivery. If the health professional is
having difficulty delivering the fetus's head,
forceps may be used to guide the head through the
birth canal. Forceps may also be used to speed delivery if the fetus is in
danger.
During some breech vaginal births, an
episiotomy is necessary to enlarge the vagina to help
deliver the infant. This is done by making an incision in the lower part of the
vagina (toward the anus); the incision is closed with stitches after the birth.
Should a breech vaginal labour cause severe problems for the fetus
or mother, an emergency caesarean section is done to deliver the fetus.
What To Expect After Treatment
A few hours after an uncomplicated vaginal delivery, you can get up
and move around. If you had an episiotomy, you may feel the need to spend a day
resting before you start moving around too much. An episiotomy incision will
heal in 1 to 3 weeks. The vaginal area is sore for several days.
Women are generally advised to avoid having sex for 4 to 6 weeks
after giving birth in order to allow the vagina and the area around it to fully
recover.
Recovery from a vaginal delivery is usually easier and quicker than
from a C-section.
Why It Is Done
Vaginal delivery of a fetus in the breech position is recommended
only if:3
- Twin fetuses are present, with the first twin
head-down.
- A mother is in the late stages of labour, and the fetus
and mother are not having any problems. Such a vaginal delivery may be allowed
to continue even if a caesarean delivery was planned.
- The fetus has
died or is known to have a fatal condition and will not live after birth. In
these cases, a C-section is not done because of the risks to the mother.
How Well It Works
During the 1990s, some experts recommended vaginal breech delivery
by experienced doctors, reasoning that avoiding a caesarean can benefit the
mother. But the Society of Obstetricians and Gynaecologists of Canada (SOGC) now recommends a planned caesarean delivery if the fetus is in breech position at term.1
This is based on a major study that found that
5 of every 100 breech infants delivered vaginally suffer
serious complications such as organ and neurological damage. (This
means that 95 of every 100 newborns have no serious problems from vaginal
breech birth.) To compare, less than 1 of every 100 breech infants had serious
problems when delivered by caesarean. All mothers in the study had a
similar low level of complications, regardless of how they
delivered.2
Sometimes, a caesarean breech birth is not possible or is
not the best choice. When a breech labour progresses too quickly, a vaginal
birth may be the only option. Risks are lowest for the newborn when a doctor
has a lot of experience doing breech delivery.4
During a twin birth, a second twin who is breech may best
be delivered vaginally.3
Risks
Types of injuries that can occur during a vaginal breech delivery
include:
- Fetal brain damage or death due to lack of
blood flow through the
umbilical cord. This can be caused by squeezing
(compression) of the umbilical cord. The cord can get caught between the legs
of the fetus or between the birth canal and the head of the fetus. It can also
be caused when the umbilical cord drops out of the birth canal (cord prolapse)
before the fetus is delivered.
- Damage to the fetus's head if the
head gets caught in the pelvis and is difficult to deliver. These types of
injuries include tears in the covering of the brain or swelling caused by
bleeding under the scalp.
- Damage to an arm when it gets caught
alongside the head during delivery (nuchal arm). This can result in a broken
bone, bruising, or tearing of the muscle.
- Injury to the fetus's
spinal cord.
- Damage to the fetus's genitals or internal
organs.
What To Think About
The labour and delivery of a breech infant sometimes takes longer
than that of an infant in the head-down position. The feet or buttocks of a
breech infant do not put as much pressure on the
cervix as the head would, slowing cervical opening, or
dilation.
A vaginal delivery of a breech fetus should only be aided by a
health professional who is experienced in breech delivery.
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