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Updated: Aug 9, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Continuous esophageal pH monitoring during laparoscopic cholecystectomy
1Department of Surgery B, Assaf Harofeh Medical Centre, Tel Aviv University, Zerifin, Israel.
Abstract:
Gastro-esophageal regurgitation (GER) and eventual aspiration is considered a major risk during general anesthesia. High intraperitoneal pressure produced during laparoscopic cholecystectomy (LC) is a possible source of increased GER. We investigated the incidence of GER using continuous esophageal pH monitoring in 14 patients undergoing elective LC. Only two brief episodes of acid reflux (pH < 4) occurred during LC. Apparently the high intraperitoneal pressure during LC carries no increased risk of regurgitation and aspiration.
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