Abstract
General endotracheal (GET) anesthesia is often used during single-balloon enteroscopy (SBE). However, there is currently limited data regarding monitored anesthesia care (MAC) without endotracheal intubation for this procedure. The aim of the study was to determine the safety and efficacy of MAC sedation during SBE and to identify risk factors for adverse events. All patients who underwent SBE and SBE-assisted endoscopic retrograde cholangiopancreatography between June 2011 and July 2013 at a tertiary-care referral center were studied in a retrospective analysis of a prospectively collected database. Patients received MAC anesthesia or GET. The main outcome measurements were sedation-related adverse events, diagnostic yield, and therapeutic yield. Of the 178 cases in the study, 166 cases (93 %) were performed with MAC and 12 (7 %) with GET. Intra-procedure sedation-related adverse events occurred in 17 % of cases. The most frequent event was transient hypotension requiring pharmacologic intervention in 11.8 % of procedures. In MAC cases, the diagnostic yield was 58.4 % and the therapeutic yield was 30.1 %. Anesthesia duration was strongly associated with the occurrence of a sedation-related adverse event (P = 0.005). MAC is a safe and efficacious sedation approach for most patients undergoing SBE. Sedation-related complications in SBE are uncommon, but are more frequent in longer procedures.
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