• Alan Villavicencio, Sharad Rajpal, Lee NelsonEEBoulder Neurosurgical Associates, Boulder, Colorado, United States., Samantha Avoian, and Sigita Burneikiene.
• Boulder Neurosurgical Associates, Boulder, Colorado, United States; Justin Parker Neurological Institute, Boulder, Colorado, United States.
• Clin Neurol Neurosurg. 2020 Apr 1; 191: 105686.

ObjectiveUnplanned readmissions after spinal surgery adversely affect not only healthcare costs but also the quality of delivered care. The primary objective of this study was to identify the rates and predicting factors of unplanned 30-day readmissions at a community-based hospital.Patients And MethodsThis study is a retrospective review of a single-center community-based hospital administrative and clinical records identifying unplanned readmissions. Risk factors for readmissions due to surgical site infections, pain, medical vs. procedure-related complications, and the number of readmissions were studied using multiple logistic regression analysis.ResultsA total overall readmission rate was 7.3 % (79 readmissions for 1077 patients). The readmission rates for thoracolumbar and cervical surgeries were 5.5 % and 1.8 %, respectively. The mean duration to primary readmission was 11.4 + 8.5 days. The most common procedure-related complication diagnosed at readmittance was wound-related complications (26 readmissions, 32.9 %). The most common non-surgical complication was a drug reaction or overdose (10.1 %). Multivariate logistic regression analyses revealed that longer hospitalization was a highly significant predictor of wound-related complications, followed by discharge to home or home care, and lower ASA scores (all <0.048). A younger age predicted readmissions due to pain (p = 0.014) and longer OR time did not reach statistical significance (p = 0.079). Higher ASA scores predicted readmissions due to medical vs. surgical complications (p = 0.028). There were no statistically significant predictors identified for more than one readmission during the 30-day post-discharge period.ConclusionsThe overall rate of 30-day unplanned readmissions at a community-based hospital was 7.3 % for patients undergoing spinal surgeries and was similar to the rates reported by larger academic tertiary care institutions and registry-based studies. The study suggests that surgical site infections was the most common reason for readmissions, which was predictive by longer hospitalization, discharge disposition, and lower ASA scores.Copyright © 2020 Elsevier B.V. All rights reserved.

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