• Vaibhav Wadhwa, Kapil Gupta, and John J Vargo.
• Department of Gastroenterology and Hepatology, Cleveland Clinic Florida, Weston.
• Curr Opin Anaesthesiol. 2019 Aug 1; 32 (4): 453-456.

Purpose Of ReviewCapnography is an excellent tool for early detection of hypoxemia and apnea in patients undergoing sedation for gastrointestinal endoscopy. The current American Society of Anesthesiology (ASA) guidelines recommend the use of capnography in any patient undergoing moderate sedation. The purpose of this review was to compile the most recent data available on capnography use in gastrointestinal endoscopy with the focus primarily on the use of capnography in moderate sedation cases.Recent FindingsRecent high-quality studies have evaluated the utility of capnography in low risk patients undergoing moderate sedation and have found no benefit with addition of capnography.SummaryCapnography is beneficial when used for patients who are at a higher risk for sedation-related complications. There is no benefit when capnography is used in low risk patients undergoing routine upper endoscopy and colonoscopy under moderate sedation but there is benefit when used in advanced endoscopic procedures that require deeper sedation and have longer procedure times.

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