Prevalence and association of non-medical cannabis use with post-procedural healthcare utilisation in patients undergoing surgery or interventional procedures: a retrospective cohort study

Ahrens, Elena; Wachtendorf, Luca J.; Chiarella, Laetitia S.; Ashrafian, Sarah; Suleiman, Aiman; Tartler, Tim M.; Azizi, Basit A.; Chen, Guanqing; Berger, Amnon A; Shay, Denys; Teja, Bijan; Banner‐Goodspeed, Valerie; Ma, Haobo; Eikermann, Matthias; Hill, Kevin P.; Schaefer, Maximilian S.

doi:10.1016/j.eclinm.2023.101831

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…The analyses were adjusted for a priori defined confounding variables based on literature review and clinical plausibility. Confounding variables included patient demographics such as age; sex; body mass index; American Society of Anesthesiologists Physical Status classification; and comorbidities such as cerebrovascular disease, chronic heart failure, arterial hypertension, peripheral vascular disease, chronic obstructive pulmonary disease, chronic kidney disease, diabetes mellitus, depression, schizoaffective disorders, alcohol and drug abuse, 18,19 and smoking status. We also included preoperative drug prescriptions of antipsychotics and benzodiazepines, as well as other intraoperatively administered vasoactive medications such as norepinephrine, epinephrine, and dopamine as confounding variables.…”

Section: Confounding Variablesmentioning

confidence: 99%

Intraoperative Use of PhenylephrineversusEphedrine and Postoperative Delirium: A Multicenter Retrospective Cohort Study

Ma,

Ahrens,

Wachtendorf

et al. 2023

Anesthesiology

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Background The treatment of intraoperative hypotension with phenylephrine may impair cerebral perfusion through vasoconstriction, which has been linked to postoperative delirium. We hypothesized that intraoperative administration of phenylephrine, compared to ephedrine, is associated with higher odds of postoperative delirium. Methods 103,094 hospitalized adults undergoing general anesthesia for non-cardiac, non-neurosurgical procedures between 2008 and 2020 at two tertiary academic healthcare networks in Massachusetts, USA were included in this multicenter hospital registry study. The primary exposure was the administration of phenylephrine versus ephedrine during surgery, and the primary outcome was postoperative delirium within seven days. Multivariable logistic regression analyses adjusted for a priori defined confounding variables including patient demographics, comorbidities, and procedural factors including magnitude of intraoperative hypotension were applied. Results 78,982 (76.6%) patients received phenylephrine, and 24,112 (23.4%) patients received ephedrine during surgery. 770 patients (0.8%) developed delirium within seven days. The median (interquartile range [IQR]) total intraoperative dose of phenylephrine was 1.0 (0.2–3.3) mg and 10.0 (10.0–20.0) mg for ephedrine. In adjusted analyses, the administration of phenylephrine, compared to ephedrine, was associated with higher odds of developing postoperative delirium within seven days (adjusted odds ratio [ORadj] 1.35; 95%CI 1.06–1.71; adjusted absolute risk difference [ARDadj] 0.2%; 95%CI 0.1%–0.3%; p=0.015). A keyword and manual chart review-based approach in a subset of 45,465 patients further validated these findings (delirium incidence 3.2%, ORadj 1.88; 95%CI 1.49–2.37; p<0.001). Fractional polynomial regression analysis further indicated a dose-dependent effect of phenylephrine (adjusted coefficient 0.08; 95%CI 0.02–0.14; p=0.013, per each mcg/kg increase in the cumulative phenylephrine dose). Conclusions The administration of phenylephrine compared to ephedrine during general anesthesia was associated with higher odds of developing postoperative delirium. Based on our data, clinical trials are warranted to determine whether favoring ephedrine over phenylephrine for treatment of intraoperative hypotension can reduce delirium after surgery.

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Section: Confounding Variablesmentioning

confidence: 99%