Objective: This study aimed to evaluate the association between BMI and postoperative opioid use within two years following lumbar spine surgery using a national database.
Methods: TriNetX, a national network of de-identified patient records, was retrospectively queried from 2003 to 2021 using ICD-10, CPT, and VA codes. Propensity-score matching analysis was performed based on demographics, comorbidities, anxiety disorders, and mood disorders.
Results: 21,997 total patients were included in our analysis. Patients with BMI > 30 were more likely to be prescribed opioids postoperatively (OR: 1.30; 95% CI: 1.18-1.42). Patients with BMI > 40 were more likely to be prescribed opioids when compared to patients with BMI < 30 (OR: 1.94; 95% CI: 1.48-2.56), BMI 30-34.9 (OR: 2.06; 95% CI: 1.57-2.70), BMI 35-39.9 (OR: 1.50; 95% CI: 1.13-2.00), and BMI < 40 (OR: 2.06; 95% CI: 1.57-2.70). The BMI > 40 group had an increased number of opioid prescriptions within two years following lumbar surgery compared to patients with BMI 30-34.9 (p = 0.0113) and BMI < 30 (p = 0.0018).
Conclusion: Opioid prescription following lumbar spine surgery is associated with an elevated BMI. Patients with Class III Obesity appear to be at the highest risk of increased opioid prescriptions following lumbar surgery. Physicians should consider the patient's BMI when deciding postoperative pain management.
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