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With hospital leaders and policy makers increasingly seeking ways to improve resource use, there has been heightened interest in reducing hospital length of stay (LOS) and performing spine procedures on an outpatient basis. We aimed to determine which risk factors correlated with prolonged LOS after anterior lumbar interbody fusion (ALIF).

Medical records for patients who underwent ALIF were retrospectively reviewed. Patients were divided into those who had extended (≥3 days) versus nonextended (<3 days) LOS, and patient demographics, medical comorbidities, and preoperative medications were analyzed. Univariate and multivariate regression were then used to determine preoperative risk factors for extended LOS.

A total of 166 patients were included (mean age, 48.7 years). Medical comorbidities included hypertension (31.9%), diabetes (8.4%), and obesity (body mass …