• Steve H Monk, Ummey Hani, Deborah Pfortmiller, Tim E Adamson, Michael A Bohl, Byron C Branch, Paul K Kim, Mark D Smith, Christopher M Holland, and Matthew J McGirt.
• Carolina Neurosurgery & Spine Associates, Charlotte , North Carolina , USA.
• Neurosurgery. 2023 Oct 1; 93 (4): 867874867-874.

BackgroundAmbulatory surgery centers (ASCs) have emerged as an alternative setting for surgical care as part of the national effort to lower health care costs. The literature regarding the safety of minimally invasive transforaminal lumbar interbody fusion (MIS TLIF) in the ASC setting is limited to few small case series.ObjectiveTo assess the safety and efficacy of MIS TLIF performed in the ASC vs inpatient hospital setting.MethodsA total of 775 patients prospectively enrolled in the Quality Outcomes Database undergoing single-level MIS TLIF at a single ASC (100) or the inpatient hospital setting (675) were compared. Propensity matching generated 200 patients for analysis (100 per cohort). Demographic data, resource utilization, patient-reported outcome measures (PROMs), and patient satisfaction were assessed.ResultsThere were no significant differences regarding baseline demographic data, clinical history, or comorbidities after propensity matching. Only 1 patient required inpatient transfer from the ASC because of intractable pain. All other patients were discharged home within 23 hours of surgery. The rates of 90-day readmission (2.0%) and reoperation (0%) were equivalent between groups. Both groups experienced significant improvements in all PROMs (Oswestry Disability Index, EuroQol-5D, back pain, and leg pain) at 3 months that were maintained at 1 year. PROMs did not differ between groups at any time point. Patient satisfaction was similar between groups at 3 and 12 months after surgery.ConclusionIn carefully selected patients, MIS TLIF may be performed safely in the ASC setting with no statistically significant difference in safety or efficacy in comparison with the inpatient setting.Copyright © Congress of Neurological Surgeons 2023. All rights reserved.

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