Objective
Preoperative opioid misuse is associated with worse postoperative outcomes. This prospective longitudinal cohort study evaluated the association between preoperative opioid misuse and prolonged pain and opioid use after elective spine surgery; and examined postoperative trajectories of patient-reported outcomes over one year.
Methods
Fifty-two patients undergoing elective spine surgery completed presurgical and weekly postoperative longitudinal assessments of pain and opioid use and monthly assessments of depression, anxiety, sleep disturbance, and physical function. Cox regression analyzed the effect of preoperative opioid misuse on time to pain and opioid cessation while linear mixed-effects models examined longitudinal changes in postoperative outcomes.
Results
Adjusting for age, sex, operative region, number of spinal levels, and any preoperative opioid use, preoperative opioid misuse (COMM-Positive) was associated with a delayed return to baseline opioid dose (hazard ratio [HR], 0.35; 95% confidence interval [CI], 0.14–0.88; p=0.02) and delayed opioid cessation (HR, 0.25; 95% CI, 0.09–0.59; p=0.008). All patients experienced comparable reductions in current and average pain intensity, and pain interference over time. COMM-Positive patients reported a normalization of postoperative anxiety and depression 1 month after surgery with a rebound at 3 months while patients without preoperative opioid misuse remained stable over time.
Conclusion
Preoperative opioid misuse is a significant risk factor for delayed opioid cessation even after adjusting for preoperative opioid use, and is associated with a transient normalization of anxiety and depressive symptoms with a rebound 3 months following spine surgery. Targeted screening and risk reduction strategies are needed for patients reporting preoperative opioid misuse before spine surgery.