• Ariel Omiunu, Gregory L Barinsky, Christina H Fang, Jordon G Grube, Wayne D Hsueh, Soly Baredes, and Jean Anderson Eloy.
• Department of Otolaryngology - Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A.
• Laryngoscope. 2021 Jun 14.

Objectives/HypothesisTo identify factors that may increase the risk of unplanned admission following elective outpatient endoscopic sinonasal surgery (ESS).Study DesignRetrospective analysis of the National Surgical Quality Improvement Program (NSQIP).MethodsAll cases of ESS were extracted from the 2010 to 2018 NSQIP database using Current Procedural Terminology codes. Only cases coded as outpatient, elective, and nonemergent procedures were included. Unplanned admissions were defined as cases with a total hospital stay of 1 day or more. Univariate and multivariate analyses were performed to identify variables that independently predicted unanticipated admission.ResultsA total of 971 cases met inclusion criteria, of which 274 (28.2%) were unanticipated admissions. Patients in the unplanned admission group were more likely to be older (46.8 vs. 41.1 years, P < .001), male (57.7% vs. 48.4%, P = .009), obese (54.8% vs. 43.8%, P = .003), and have hypertension (35.0% vs. 25.0%, P = .002). Unplanned admitted patients were also more likely to be included under American Society of Anesthesiologists (ASA) classification III-IV (43.1% vs. 27.2%, P < .001). There were no significant differences in race, smoking, diabetes, or chronic steroid use. Unplanned admitted patients had a higher rate of surgical complications (2.9% vs. 1.0%, P = .041). Upon multivariate analysis, independent preoperative risk factors for unplanned admission included age (OR: 1.018, P = .002), male gender (OR: 1.415, P = .025), obesity (OR: 1.527, P = .008), and ASA III-IV (OR 1.501, P = .018).ConclusionsFactors independently associated with unplanned admission following outpatient ESS were older age, male gender, obesity, and higher ASA. Identification of patients at risk may reduce unanticipated hospital admission after ESS.Level Of Evidence4 Laryngoscope, 2021.© 2021 The American Laryngological, Rhinological and Otological Society, Inc..

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