Abstract

Esophagogastroduodenoscopy (EGD) and colonoscopy are common outpatient gastrointestinal endoscopic procedures that frequently use sedation. We aimed to identify a protocol that combines safety with cost effectiveness. We collected data from consecutive outpatients (age, 20-98 y) who underwent diagnostic EGD (n= 117,661) or colonoscopy (n= 32,550) with propofol sedation from January 2006 through December 2016. Propofol was administered by a nurse via bolus injection using an age-adjusted standard protocol, up to a total of 200 mg. The primary outcome measure was occurrence of adverse events within 24 hours. Secondary outcome measures included rates of procedure success, respiratory depression, and other procedure-related adverse events. The median dose of propofol administered for EGD was 77 mg (range, 20-160 mg) and for colonoscopy was 99 mg (range, 40-200 mg). Among patients undergoing EGD, those younger than 41 years required 1.5-fold more propofol than patients 61-80 years old. The only adverse event was the transient need for supplemental oxygen supply, required by 1950 patients (1.3%): 1689 undergoing EGD (1.4%) and 261 undergoing colonoscopy (0.8%). Patients were discharged after 60 minutes and at least 66,250 patients (44%) drove themselves from the hospital. None experienced a traffic accident within 24 hours after receiving propofol sedation. Nurse-administered propofol monosedation using an age-adjusted standard protocol up to a maximal of 200 mg is safe and practical for outpatient gastrointestinal endoscopy.

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