Those at high risk of uterine rupture (eg, those with previous classical uterine incision or T - incision,
prior uterine rupture, or extensive transfundal uterine surgery) and those in whom vaginal delivery is otherwise contraindicated (eg, those with placenta previa) are not generally candidates for planned TOLAC.
There are many medical indications why a repeat c - section may be a safer option than a trial of labor after cesarean, such as a prior classical incision,
prior uterine rupture or a history of three or more cesarean sections.
Not exact matches
Risk of
uterine rupture during labor among women with a
prior cesarean delivery.
Furthermore, the recommendations state that a
prior cesarean delivery is an absolute contraindication to planning a home birth due to the risks, including
uterine rupture.
Predicting
uterine rupture in women undergoing trial of labor after
prior cesarean delivery.
If you've had a
prior C - section and have labor induced, your health care provider will avoid certain medications to reduce the risk of
uterine rupture.
One factor that markedly influences the likelihood of
uterine rupture is the location of the
prior incision on the uterus.
Studies addressing the risks and benefits of TOLAC in women with more than one cesarean delivery have reported a risk of
uterine rupture between 0.9 % and 3.7 %, but have not reached consistent conclusions regarding how this risk compares with women with only one
prior uterine incision (6, 70 — 73).
Three studies have reported no association (49, 77, 81), whereas a fourth has suggested an increased risk of
uterine rupture for women undergoing TOLAC who have not had a
prior vaginal delivery (relative risk [RR], 2.3; P <.0001)(79).
Studies examining the effects of prostaglandins (grouped together as a class of agents) on
uterine rupture in women with a
prior cesarean delivery also have demonstrated inconsistent results.
One observational study comparing induction to expectant management in women with a
prior cesarean delivery found that induction of labor was associated with a greater relative risk of
uterine rupture, whereas another study did not (104, 105).
In patients after 28 weeks of gestation with an intrauterine fetal demise and a
prior cesarean scar, cervical ripening with a transcervical Foley catheter has been associated with
uterine rupture rates comparable with spontaneous labor (106, 114, 149, 150), and this may be a helpful adjunct in patients with an unfavorable cervical examination.
One study found no increased risk of
uterine rupture (0.9 % versus 0.7 %) in women with one versus multiple
prior cesarean deliveries (72), whereas the other noted a risk of
uterine rupture that increased from 0.9 % to 1.8 % in women with one versus two
prior cesarean deliveries (74).
Because relocation after the onset of labor is generally not appropriate in patients with a
prior uterine scar, who are thereby at risk of
uterine rupture, transfer of care to facilitate TOLAC, as noted previously, is best effected during the course of antenatal care.
In addition, there has not been consistent evidence of an increased risk of
uterine rupture or maternal or perinatal morbidity associated with TOLAC in the presence of a
prior low - vertical scar.
A secondary analysis of 11,778 women from this study with one
prior low - transverse cesarean delivery showed an increase in
uterine rupture only in women undergoing induction who had no
prior vaginal delivery (1.5 % versus 0.8 %, P =.02).
Although some have questioned the safety of offering TOLAC under these circumstances, two case series, both from large tertiary care facilities, reported rates of VBAC success and
uterine rupture similar to those of women with a documented
prior low - transverse
uterine incisions (90, 91).
We have little ability to quantify maternal risks of
uterine rupture and other maternal morbidities when a women with three or more
prior cesareans desires spontaneous labor.
We just don't have data here to quantify the maternal risks of
uterine rupture or other maternal morbidities when women with three or more
prior cesareans desire spontaneous labor.