Rational dissection of a high institutional cesarean section rate: an analysis using the Robson Ten Group...

Area of Science:

• Obstetrics and Gynecology
• Public Health
• Maternal-Fetal Medicine

Background:

• Global Cesarean Section (CS) rates exceed the World Health Organization's optimal 15%.
• The Robson Ten Group Classification System (TGCS) provides a standardized method for analyzing CS rates.
• Understanding contributing factors is crucial for developing targeted interventions to reduce unnecessary CS.

Purpose of the Study:

• To identify the primary patient categories contributing to the Cesarean Section rate at a tertiary care institution.
• To analyze CS rates within specific demographic and clinical groups using the TGCS.
• To inform strategies for optimizing Cesarean Section rates.

Main Methods:

• A prospective study was conducted at Singapore General Hospital from January 2008 to December 2011.
• Data collected included parity, pregnancy type (singleton/multiple), previous CS history, labor onset, and gestational age.
• CS rates were calculated for each TGCS group and their contribution to the overall CS rate was determined.

Main Results:

• A total of 6074 deliveries were analyzed, with 33.1% resulting in Cesarean Section.
• Robson Group 5 (nulliparous women with single cephalic presentation, induced labor) was the largest contributor (25.9%) to the CS rate.
• Robson Group 2 (multiparous women, not previously delivering vaginally, induced labor) and Group 10 (previous CS) were also significant contributors (18.0% and 16.1%, respectively).

Conclusions:

• The TGCS effectively identifies key patient groups associated with high Cesarean Section rates.
• A substantial proportion of high-risk pregnancies, particularly those in Robson Group 10 (previous CS), contribute significantly to the institutional CS rate.
• The study indicates a successful Vaginal Birth After Cesarean (VBAC) rate exceeding 20% at the institution, suggesting opportunities for promoting VBAC.