Abstract
IntroductionTo minimize healthcare related costs, ambulatory surgery centers (ASCs) have become increasingly favored venues for outpatient spine surgery. Using a national cohort of patients undergoing elective lumbar decompression (LD) in an inpatient or outpatient hospital setting, the current objectives were to: 1) outline specific factors that were associated with complications, and 2) describe potentially catastrophic complications. MethodsAdults who underwent LD between 2008 and 2014 were identified in the National Surgical Quality Improvement Program (NSQIP) database. Inclusion criteria were: principal procedure LD (CPT 63030), elective, neurologic/orthopaedic surgeons, length of stay (LOS) of 0/1 days, and discharged home. The primary outcome was presence of any complication. The secondary outcome was occurrence of potentially catastrophic complications. Univariate/multivariable logistic regression was performed. ResultsA total of 19,908 patients met the inclusion criteria. 564 (2.83%) patients experienced a complication. Cardiac intervention remained the only independent predictor of complications after multivariate testing (OR: 2.02, 95% CI: 1.00, 4.07, p = 0.049). Approximate comorbidity score cut-offs associated with <2% risk of complication were: ASA ≤ 3, CCI ≤ 5, mFI ≤ 0.182. A total of 96 (0.48%) patients experienced potentially catastrophic complications. ConclusionsWe utilized a national cohort of patients undergoing elective inpatient and outpatient LD in a hospital setting to identify preoperative risk factors for postoperative complications. Previous cardiac intervention was the sole independent predictor of complications. Although no patients treated at ASCs were studied, we believe these factors can aid in selecting patients most appropriate for ASCs and begin the process of selecting the best patients for an ambulatory setting.
Published Version
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