• David R Rosen, Kenji Inaba, Paul J Oh, Adam C Gutierrez, Aaron M Strumwasser, Subarna Biswas, Melody Cala, and Glenn T Ault.
• Division of Colon and Rectal Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA. Electronic address: David.Rosen@med.usc.edu.
• J. Am. Coll. Surg. 2017 Mar 13.

BackgroundOutpatient laparoscopic appendectomy is being used increasingly as a treatment option for acute, uncomplicated appendicitis. This was a prospective validation study in a large, urban, public safety-net hospital.Study DesignFrom 2014 to 2016, all patients undergoing laparoscopic appendectomy for acute, uncomplicated appendicitis were enrolled in a prospective observational trial. Standard baseline perioperative practice (control group) was documented for 1 year. An outpatient appendectomy protocol was then introduced. Inclusion criteria required intraoperative confirmation of uncomplicated appendicitis and strict discharge criteria, including physician assessment before discharge. Data collection then continued for 1 year (outpatient group). The outcomes measures examined included complications, length of stay, nursing transitions, emergency department visits, readmissions, and patient satisfaction.ResultsThe study enrolled 351 patients (178 control, 173 outpatient). Of the 173 candidates for outpatient appendectomy, 113 went home. Reasons for admission included surgeon discretion due to intraoperative findings/medical comorbidities and lack of transportation home. The outpatient group had shorter operative time (69 vs 83 minutes; p < 0.001), longer time in recovery (242 vs 141 minutes; p < 0.001), fewer nursing transitions (4 vs 5; p < 0.001), and shorter postoperative length of stay (9 vs 19 hours; p < 0.001). There was no difference in complications, emergency department visits, or readmissions. In the outpatient group, none of the patients sent home from recovery had postoperative complications or required readmission. Satisfaction surveys revealed no change in satisfaction with either protocol.ConclusionsOutpatient appendectomy is safe in a public hospital and results in shorter hospital length of stay and decreased healthcare costs. Strict criteria for discharge are important to identify patients who should be admitted for observation.Copyright © 2017 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

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