Factors associated with readmission after minimally invasive transforaminal lumbar interbody fusion
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OBJECTIVE
The objective of this study was to identify factors that lead to a prolonged hospital stay or 30-day readmission after minimally invasive surgery (MIS) for transforaminal lumbar interbody fusion (TLIF) at a single institution.
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Consecutive patients who underwent MIS TLIF from January 1, 2016, to March 31, 2018, were retrospectively analyzed. Demographic data, including age, sex, ethnicity, smoking status, and body mass index, were collected along with operative details, indications, affected spinal levels, estimated blood loss, and operative duration. The effects of these data were evaluated relative to the hospital length of stay (LOS) and 30-day readmission.
RESULTS
The authors identified 174 consecutive patients who underwent MIS TLIF at 1 or 2 levels from a prospectively collected database. The mean (range) patient age was 64.1 (31–81) years, 97 were women (56%), and 77 were men (44%). Of 182 levels fused, 127 were done at L4–5 (70%), 32 at L3–4 (18%), 13 at L5–S1 (7%), and 10 at L2–3 (5%). Patients underwent 166 (95%) single-level procedures and 8 (5%) 2-level procedures. The mean (range) procedural duration, defined as the time from incision to closure, was 164.6 (90–529) minutes. The mean (range) LOS was 1.8 (0–8) days. Eleven patients (6%) were readmitted within 30 days; the most frequent causes were urinary retention, constipation, and persistent or contralateral symptoms. Seventeen patients had LOS greater than 3 days. Six of those patients (35%) were identified as widows, widowers, or divorced, and 5 of them lived alone. Six patients with prolonged LOS (35%) required placement in either skilled nursing or acute inpatient rehabilitation. Regression analyses showed living alone (p = 0.04) and diabetes (p = 0.04) as predictors of readmission. Regression analyses revealed female sex (p = 0.03), diabetes (p = 0.03), and multilevel surgery (p = 0.006) as predictors of LOS > 3 days.
CONCLUSIONS
Urinary retention, constipation, and persistent radicular symptoms were the leading causes of readmission within 30 days of surgery in this series, which is distinct from data from the American College of Surgeons National Surgical Quality Improvement Program. The inability to discharge a patient home for social reasons led to prolonged inpatient hospital stays. Identifying these risk factors and proactively addressing them could lower readmission rates and decrease LOS among patients undergoing MIS TLIF.
ABBREVIATIONS
ACS = American College of Surgeons ; ASA = American Society of Anesthesiologists scale ; BMI = body mass index ; ICD = International Classification of Diseases ; IQR = interquartile range ; LOS = length of stay ; MIS = minimally invasive surgery ; NSQIP = National Surgical Quality Improvement Program ; rh-BMP-2 = recombinant human bone morphogenetic protein 2 ; TLIF = transforaminal lumbar interbody fusion ; VAS = visual analog scale .Approaching the debate of laminectomy versus fusion for grade 1 lumbar spondylolisthesis, the authors leveraged simulation to show how differences between the fusion groups of landmark randomized control trials (RCTs) led to seemingly divergent conclusions, and they offer insights into the design of future RCTs. Lami = laminectomy alone; SLIP = Spinal Laminectomy versus Instrumented Pedicle Screw. See the article in this issue by Meade et al. (pp 696–704). Reprinted with permission, Cleveland Clinic Foundation ©2023. All rights reserved.
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