Cervical ripening. A review and recommendations for clinical practice

Area of Science:

• Obstetrics and Gynecology
• Reproductive Medicine

Background:

• Cervical ripening is a critical precursor to labor onset.
• The cervix exhibits metabolic activity during ripening and becomes passive during active labor.
• A ripe cervix signifies labor readiness and predicts successful labor induction.

Purpose of the Study:

• To review common cervical ripening methods.
• To evaluate their effectiveness, safety, and impact on labor induction and cesarean rates.

Main Methods:

• Review of frequently used cervical ripening methods including membrane stripping, mechanical dilators, and prostaglandins.
• Discussion of cost-effectiveness and urgency-based method selection.
• Consideration of factors influencing outcomes, such as patient Bishop score and timing of amniotomy.

Main Results:

• Membrane stripping, mechanical dilators, and prostaglandins are simple, effective, efficient, safe, and well-tolerated ripening methods.
• These methods, along with Foley catheters and misoprostol, are cost-effective.
• Prostaglandins require hospitalization and fetal monitoring due to potential for excessive myometrial activity.
• Current methods often do not decrease cesarean section rates, potentially due to small study sizes and early induction before a Bishop score of 9.

Conclusions:

• Cervical ripening methods are essential for labor preparation and induction.
• While effective and cost-efficient, their impact on reducing cesarean rates requires further investigation with larger studies.
• Method selection depends on the urgency of the situation, with balloon catheters and prostaglandins acting faster than membrane stripping.