Current options for mechanical prevention of preterm birth

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine

Background:

• Cervical insufficiency is a key factor in preterm birth, often identified by cervical dilation or length, especially in women with a history of preterm delivery.
• Mechanical interventions like cerclage and pessary are considered for managing cervical insufficiency and preventing preterm birth.

Purpose of the Study:

• To evaluate the efficacy of mechanical interventions, specifically cervical cerclage and pessary, in managing cervical insufficiency and preventing preterm birth.
• To clarify the role of cerclage in singleton versus multiple gestations and assess the current evidence for pessary use.

Main Methods:

• Review of evidence supporting the use of cervical cerclage in singleton gestations with diagnosed cervical insufficiency.
• Analysis of studies investigating the effectiveness of cervical cerclage in multiple gestations.
• Examination of research on pessary use for preterm birth prevention across various obstetric populations.

Main Results:

• Cervical cerclage is supported by evidence for women with singleton gestations and diagnosed cervical insufficiency (painless dilation or history of early preterm birth with short cervix/dilation).
• The benefit of cerclage in multiple gestations remains uncertain, necessitating further research.
• Studies on pessary use for preterm birth prevention have yielded mixed results, indicating a need for more investigation before routine adoption.

Conclusions:

• Cervical cerclage is a beneficial intervention for specific cases of cervical insufficiency in singleton pregnancies.
• Further research is essential to determine the efficacy of cerclage in multiple gestations.
• The use of pessaries for preventing preterm birth requires additional study due to inconsistent findings.