Ultrasound your NPO: Effect of body mass index on gastric volume in term pregnant women - Retrospective case series.

Introduction: A common belief has been that obese patients are prone to develop aspiration of gastric contents when general anesthesia is administered. We aimed to determine the correlation between antral cross-sectional area as a surrogate of gastric volume measured by gastric ultrasound, and body mass index (BMI) in term pregnant women scheduled for elective cesarean section.

Methods: A cross-sectional observational study was conducted on forty-two term pregnant patients scheduled for cesarean section.