Cervical Cerclage in Future Pregnancies After History of Cervical Insufficiency or Preterm Labor

Risk Stratification and Cardiovascular Considerations

Women with a history of preterm birth have a 1.6-fold increased risk of future cardiovascular disease, and those with hypertensive disorders face a 1.7-2.7-fold increased risk, necessitating aggressive postpartum risk factor management and cardioprotection strategies that extend well beyond the immediate postpartum period, according to the American Heart Association 2

The American College of Obstetricians and Gynecologists recommends starting transvaginal ultrasound cervical length measurements at 14-16 weeks gestation and continuing every 1-2 weeks through 24 weeks, which is superior to clinical examination alone for risk stratification 1
Approximately 69% of high-risk women maintain cervical length >25 mm throughout surveillance and never require cerclage, as reported by the Society for Maternal-Fetal Medicine 1
If cervical length measures ≤25 mm before 24 weeks, offer ultrasound-indicated cerclage placement, which has compelling data showing benefit in patients with prior preterm birth, according to the American College of Obstetricians and Gynecologists 1
If cervical length is <10 mm, cerclage shows particular benefit, with decreased preterm birth at <35 weeks (39.5% vs 58.0%), as reported by the Society for Maternal-Fetal Medicine 3

Add vaginal progesterone 200 mg daily after cerclage placement, as recommended by the American College of Obstetricians and Gynecologists, which has been shown to reduce spontaneous preterm birth at <34 weeks (2.2% vs 18.4%) and <37 weeks (9.1% vs 29.7%) 1
For cervical length ≤20 mm before 24 weeks, prescribe vaginal progesterone 200 mg daily (GRADE 1A recommendation), according to the Society for Maternal-Fetal Medicine 1

If preterm premature rupture of membranes occurs, cerclage retention does not significantly prolong pregnancy (45.8% vs 56.2% had 1-week prolongation) and shows no significant differences in chorioamnionitis or neonatal outcomes, as reported by the American College of Obstetricians and Gynecologists 4

Implement comprehensive cardiovascular risk assessment and management that extends beyond pregnancy, including lipid screening and management, as recommended by the American Heart Association 4
Diabetes screening is also recommended, according to the American Heart Association 2
Long-term cardiovascular surveillance is necessary given the elevated lifetime risk, as reported by the American Heart Association 2