A 28-year-old primigravida at 36 weeks of gestation presents to the antenatal clinic for a routine check-up. Abdominal examination reveals a hard, round mass in the fundus and a softer, broader mass in the lower segment. On ultrasound, the fetal head is noted at the level of the right iliac fossa with buttocks in the fundus. The patient is counseled regarding mode of delivery. Which of the following is the most appropriate management for this patient?

Explanation

## Clinical Scenario Analysis This patient presents with a **frank breech presentation** at 36 weeks of gestation in a primigravida. The clinical findings—hard mass at fundus (buttocks), softer mass in lower segment (head), and ultrasound confirmation—establish the diagnosis. ## Management of Breech Presentation **Key Point:** The Term Breech Trial (2000) demonstrated increased perinatal morbidity and mortality with planned vaginal breech delivery, leading to a paradigm shift in management. ### Current Evidence-Based Approach **High-Yield:** In most developed countries (including India), **planned cesarean section at 39 weeks** is now the standard of care for singleton breech presentation at term, unless the patient is a candidate for and consents to external cephalic version (ECV). **Clinical Pearl:** External cephalic version is the first-line intervention offered at 37 weeks of gestation (after 36 weeks, success rates decline and risks increase). It should be performed: - After 36 weeks of gestation - With fetal heart rate monitoring - In a setting where emergency cesarean section is available - With tocolytic support (nifedipine or terbutaline) - Success rate: 40–60% in multiparas, 30–40% in primiparas ### Contraindications to ECV - Previous cesarean section (relative, not absolute) - Placenta previa - Abnormal fetal heart rate tracing - Ruptured membranes - Major fetal anomalies **Mnemonic: BREECH management post-ECV failure — PLAN CS:** - **P**rimigravida or multipara (both offered ECV first) - **L**ow success rates in primigravida (30–40%) - **A**fter ECV failure → Planned cesarean at 39 weeks - **N**o vaginal breech delivery (unless highly selected cases with experienced attendant) - **C**esarean **S**ection is standard ## Why This Patient Should Undergo ECV 1. She is at 36 weeks (optimal window for ECV) 2. No contraindications mentioned 3. ECV offers 30–40% chance of converting to cephalic presentation 4. If successful, allows for vaginal delivery 5. If unsuccessful, planned cesarean at 39 weeks is then offered **Warning:** Do NOT proceed directly to cesarean section without attempting ECV in an uncomplicated breech presentation at 36–37 weeks. This denies the patient the opportunity for vaginal delivery if ECV succeeds. ## Comparison: Breech Presentation Management | Timing | Intervention | Indication | |--------|--------------|------------| | 32–36 weeks | Observation, counseling | Spontaneous version still possible | | 37 weeks | External cephalic version | First-line; 40–60% success in multiparas | | Post-ECV failure or contraindication | Planned cesarean at 39 weeks | Standard of care | | Vaginal breech delivery | Highly selected cases only | Requires experienced attendant, strict criteria | [cite:ACOG Practice Bulletin 161, WHO Guidelines 2018]