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Reg Anesth Pain Med · Jun 2024
Cannabis use and acute postoperative pain outcomes in older adults: a propensity matched retrospective cohort study.
- Ruba Sajdeya, Masoud Rouhizadeh, Robert L Cook, Ronald L Ison, Chen Bai, Sebastian Jugl, Hanzhi Gao, Mamoun T Mardini, Osama Dasa, Kimia Zandbiglari, Farzana I Adiba, Almut G Winterstein, Catherine C Price, Thomas A Pearson, Christoph N Seubert, and Patrick J Tighe.
- University of Florida, Gainesville, Florida, USA rubasajdeya@ufl.edu.
- Reg Anesth Pain Med. 2024 Jun 30.
IntroductionCannabis use is increasing among older adults, but its impact on postoperative pain outcomes remains unclear in this population. We examined the association between cannabis use and postoperative pain levels and opioid doses within 24 hours of surgery.MethodsWe conducted a propensity score-matched retrospective cohort study using electronic health records data of 22 476 older surgical patients with at least 24-hour hospital stays at University of Florida Health between 2018 and 2020. Of the original cohort, 2577 patients were eligible for propensity-score matching (1:3 cannabis user: non-user). Cannabis use status was determined via natural language processing of clinical notes within 60 days of surgery and structured data. The primary outcomes were average Defense and Veterans Pain Rating Scale (DVPRS) score and total oral morphine equivalents (OME) within 24 hours of surgery.Results504 patients were included (126 cannabis users and 378 non-users). The median (IQR) age was 69 (65-72) years; 295 (58.53%) were male, and 442 (87.70%) were non-Hispanic white. Baseline characteristics were well balanced. Cannabis users had significantly higher average DVPRS scores (median (IQR): 4.68 (2.71-5.96) vs 3.88 (2.33, 5.17); difference=0.80; 95% confidence limit (CL), 0.19 to 1.36; p=0.01) and total OME (median (IQR): 42.50 (15.00-60.00) mg vs 30.00 (7.50-60.00) mg; difference=12.5 mg; 95% CL, 3.80 mg to 21.20 mg; p=0.02) than non-users within 24 hours of surgery.DiscussionThis study showed that cannabis use in older adults was associated with increased postoperative pain levels and opioid doses.© American Society of Regional Anesthesia & Pain Medicine 2024. No commercial re-use. See rights and permissions. Published by BMJ.
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