external cephalic version
Also written as: ECV — External Cephalic Version
Manual procedure to turn a breech fetus to vertex presentation before delivery.
Full Definition
External cephalic version (ECV) is a manual procedure performed typically between 36-38 weeks of gestation to turn a fetus from breech or transverse presentation to vertex (head-down) position. The procedure involves external manipulation of the fetus through the maternal abdomen, usually performed with ultrasound guidance and continuous fetal heart rate monitoring. Success rates vary from 30-80% depending on factors such as parity, placental location, amniotic fluid volume, and fetal size. ECV is performed to increase the likelihood of vaginal delivery and reduce the need for cesarean section. Contraindications include placental abnormalities, multiple gestation, oligohydramnios, and certain uterine anomalies.
Usage
Usage note: ECV commonly abbreviated; 'external' distinguishes from historical 'internal version'.
In Context
- "External cephalic version was successfully performed at 37 weeks, converting the fetus from frank breech to vertex presentation." — Procedure note
- "The patient consented to attempted ECV after discussing risks, benefits, and alternatives to cesarean delivery for breech presentation." — Informed consent documentation