Cannabis Use Disorder and Perioperative Complications

Surgery-Related Considerations in Treating People Who Use Cannabis: A Review

Importance

Cannabis use has experienced substantial growth. Many patients treated by otolaryngologists are using cannabis in various forms, often without the knowledge of the treating surgeon. These cannabinoid substances have various systemic effects, and it is critical for otolaryngologists to recognize how cannabis use may contribute to a patient's care.

Observations

Cannabis use has effects that contribute to every phase of a surgeon's care. Preoperative counseling for tapering use may prevent increased rates of adverse effects. Care with anesthesia must be observed due to increased rates of myocardial ischemia, higher tolerance to standard doses, and prolonged sedation. Although results of studies are mixed, there may be an association with cannabis use and postoperative pain, nausea, and vomiting. Postoperative wound healing may be improved through the use of topical cannabinoids. Significant drug-drug interactions exist with cannabis, most notably with several common anticoagulant medications. Care should be exercised when managing medications for people who use cannabis. While many people who use cannabis consume it infrequently, a substantial population has developed cannabis use disorder, which is associated with increased morbidity and mortality postoperatively. Screening for cannabis use disorder is important and can be done through short screening tools.

Conclusions and Relevance

Patients who use cannabis may require special attention regarding preoperative counseling and workup, intraoperative anesthesia, postoperative pain management, nausea, wound healing, and drug-drug interactions. As patient use continues to increase, otolaryngologists will find an increasing need to remain up to date on how cannabis use contributes to patient care.

The impact of cannabis use disorder on urologic oncologic surgery morbidity, length of stay, and inpatient cost: analysis of the National Inpatient Sample from 2003 to 2014

PURPOSE

This study examined the impact of cannabis use disorder (CUD) on inpatient morbidity, length of stay (LOS), and inpatient cost (IC) of patients undergoing urologic oncologic surgery.

METHODS

The National Inpatient Sample (NIS) from 2003 to 2014 was analyzed for patients undergoing prostatectomy, nephrectomy, or cystectomy (n = 1,612,743). CUD was identified using ICD-9 codes. Complex-survey procedures were used to compare patients with and without CUD. Inpatient major complications, high LOS (4th quartile), and high IC (4th quartile) were examined as endpoints. Univariable and multivariable analysis (MVA) were performed to compare groups.

RESULTS

The incidence of CUD increased from 51 per 100,000 admissions in 2003 to 383 per 100,000 in 2014 (p < 0.001). Overall, 3,503 admissions had CUD. Patients with CUD were more frequently younger (50 vs. 61), male (86% vs. 78.4%), Black (21.7% vs. 9.2%), and had 1st quartile income (36.1% vs. 20.6%); all p < 0.001. CUD had no impact on any complication rates (all p > 0.05). However, CUD patients had higher LOS (3 vs. 2 days; p < 0.001) and IC ($15,609 vs. $12,415; p < 0.001). On MVA, CUD was not an independent predictor of major complications (p = 0.6). Conversely, CUD was associated with high LOS (odds ratio (OR) 1.31; 95% CI 1.08-1.59) and high IC (OR 1.33; 95% CI 1.12-1.59), both p < 0.01.

CONCLUSION

The incidence of CUD at the time of urologic oncologic surgery is increasing. Future research should look into the cause of our observed phenomena and how to decrease LOS and IC in CUD patients.

Marijuana's Impact On Implant-based Breast Reconstruction: A Retrospective Cohort Study

Background

Studies have shown that chronic marijuana use is associated with increased vascular inflammation, endothelial damage, myocardial infarctions, strokes, arteritis, and cardiomyopathies; however, cannabis's effect on wound healing in immediate direct-to-implant (DTI) breast reconstruction is unknown. With the increasing prevalence of marijuana use, it is imperative to understand its effects on surgical outcomes.

Methods

We performed a retrospective cohort study of consecutive patients in a quaternary-care breast cancer center undergoing immediate DTI reconstruction. Patient demographics, operative details, and surgical complications were extracted through chart review. Active cannabis use was defined as use within 12 weeks of operation. Univariate and multivariable analyses were performed.

Results

In total, 243 consecutive patients underwent immediate DTI reconstruction, and 12 reported active cannabis use. There were no significant differences in patient demographics, cancer treatment, or operative details. Active marijuana users demonstrated higher rates of cellulitis treated with IV antibiotics (P = 0.004), explantation for infection (P = 0.004), emergency department visits (P = 0.028), readmission (P = 0.037), takeback to the operating room in 90 days (P < 0.001), and overall major complications (P < 0.001). Multivariable analysis demonstrated that active marijuana users were more likely to experience cellulitis treated with IV antibiotics [odds ratio (OR) = 3.55, P = 0.024], takeback to the OR within 90 days of operation (OR = 4.75, P = 0.001), and major complications (OR = 2.26, P = 0.048).

Conclusions

The consumption of cannabis in the perioperative setting is associated with increased rates of complications in patients undergoing immediate DTI reconstruction; however, an analysis with a larger patient population is needed to conclude that abstinence from its use should be highly encouraged.

Teaching Hospitals and Textbook Outcomes After Major Urologic Cancer Surgery

OBJECTIVE

To assess textbook outcomes by hospital teaching status following major surgery for urologic cancers.

METHODS

We used 100% national Medicare Provider Analysis and Review files from 2017-2020 to assess rates of textbook outcomes in patients undergoing bladder (ie, radical cystectomy), kidney (ie, radical or partial nephrectomy), and prostate (ie, radical prostatectomy) surgery for genitourinary malignancies. The extent of integration of learners into each hospital's workforce-defined as major, minor, and non teaching hospitals-was the primary exposure. A textbook outcome, measured at the patient level, was defined as the absence of in-hospital mortality and mortality within 30days of surgery, no readmission 30days following discharge, no postoperative complication, and no prolonged length of stay.

RESULTS

Textbook outcomes were achieved in 51% (8564/16,786) of patients after bladder cancer surgery, 70% (39,938/57,300) of patients after kidney cancer surgery, and 82% (50,408/61,385) of patients after prostate cancer surgery. After adjusting for patient- and hospital-level characteristics, teaching hospitals had higher rates of textbook outcomes in those undergoing bladder (50.7% vs 44.0%; P = .001), kidney (72.0% vs 69.7%; P = .02), and prostate (85.3% vs 81.0%; P <.001) surgery. This effect was attenuated, but not eliminated, by surgical volume in additional sensitivity analyses for bladder (OR: 1.20, 95% CI: 1.00-1.42; P = .04) and prostate (OR: 1.15, 95% CI: 1.00-1.32; P = .04) surgery. There were no significant differences in kidney cancer surgery outcomes after adjusting for hospital volume (OR: 1.03, 95% CI: 0.93-1.14; P = .6).

CONCLUSION

Undergoing major cancer surgery at a teaching hospital was associated with an increased likelihood of achieving a textbook outcome. This effect was attenuated by volume but persisted for bladder and prostate surgery.

Cannabis use disorder and perioperative outcomes following complex cancer surgery

INTRODUCTION

Cannabis usage is increasing in the United States, especially among patients with cancer. We sought to evaluate whether cannabis use disorder (CUD) was associated with higher morbidity and mortality among patients undergoing complex cancer surgery.

METHODS

Patients who underwent complex cancer surgery between January 2016 and December 2019 were identified in the National Inpatient Sample database. CUD was defined according to ICD-10 codes. Propensity score matching was performed to create a 1:1 matched cohort that was well balanced with respect to covariates, which included patient comorbidities, sociodemographic factors, and procedure type. The primary composite outcome was in-hospital mortality and seven major perioperative complications (myocardial ischemia, acute kidney injury, stroke, respiratory failure, venous thromboembolism, hospital-acquired infection, and surgical procedure-related complications).

RESULTS

Among 15 014 patients who underwent a high-risk surgical procedure, a cohort of 7507 patients with CUD (median age; 43 years [IQR: 30-56 years]; n = 3078 [41.0%] female) were matched with 7507 patients who were not cannabis users (median age; 44 years [IQR: 30-58 years); n = 2997 [39.9%] female). CUD was associated with slight increased risk relative to postoperative kidney injury (CUD, 7.8% vs. no CUD, 6.1%); however, in-hospital mortality was slightly lower (CUD, 0.9% vs. no CUD, 1.6%) (both p < 0.001). On multivariable analysis, after controlling for other risk factors, CUD was not associated with higher morbidity and mortality (adjusted odds ratio: 1.06, 95% CI: 0.98-1.15; p = 0.158).

CONCLUSION

CUD was not associated with a higher risk of postoperative morbidity and mortality following complex cancer surgery.

Cannabis smoking and abdominal wall reconstruction outcomes: a propensity score-matched analysis

PURPOSE

Despite increasing use of cannabis, literature on perioperative effects is lagging. We compared active cannabis-smokers versus non-smokers and postoperative wound morbidity and reoperations following open abdominal wall reconstruction (AWR).

METHODS

Patients who underwent open, clean, AWR with transversus abdominis release and retromuscular synthetic mesh placement at our institution between January 2014 and May 2022 were identified using the Abdominal Core Health Quality Collaborative database. Active cannabis-smokers were 1:3 propensity matched to non-smokers based on demographics and comorbidities. Wound complications, 30 day morbidity, pain (PROMIS 3a-Pain Intensity), and hernia-specific quality of life (HerQles) were compared.

RESULTS

Seventy-two cannabis-smokers were matched to 216 non-smokers. SSO (18% vs 17% p = 0.86), SSI (11.1% vs 9.3%, p = 0.65), SSOPI (12% vs 12%, p = 0.92), and all postoperative complications (46% vs 43%, p = 0.63) were similar between cannabis-smokers and non-smokers. Reoperations were more common in the cannabis-smoker group (8.3% vs 2.8%, p = 0.041), driven by major wound complications (6.9% vs 3.2%, p = 0.004). No mesh excisions occurred. HerQles scores were similar at baseline (22 [11, 41] vs 35 [14, 55], p = 0.06), and were worse for cannabis-smokers compared to non-smokers at 30 days (30 [12, 50] vs 38 [20, 67], p = 0.032), but not significantly different at 1 year postoperatively (72 [53, 90] vs 78 [57, 92], p = 0.39). Pain scores were worse for cannabis-smokers compared to non-smokers at 30 days postoperatively (52 [46, 58] vs 49 [44, 54], p = 0.01), but there were no differences at 6 months or 1 year postoperatively (p > 0.05 for all).

CONCLUSION

Cannabis smokers will likely experience similar complication rates after clean, open AWR, but should be counseled that despite similar wound complication rates, the severity of their wound complications may be greater than non-smokers.

Trends in Adolescent Comorbid Cannabis Use Disorder and Postoperative Complications

BACKGROUND

Increasing legalization and widespread misinformation about the dangers of cannabis use have contributed to the rising prevalence of cannabis use disorder (CUD) among adolescents. Our objective was to determine the prevalence of CUD in adolescent surgical patients and evaluate its association with postoperative complications.

METHODS

We performed a retrospective, 1:1 propensity-matched cohort study of adolescents (aged 10-17 years) with and without CUD who underwent inpatient operations at US hospitals participating in the Pediatric Health Information System from 2009 to 2022. The primary outcome was the trend in prevalence of CUD. Secondary outcomes included postoperative complications. Using a Bonferroni correction, we considered a P value < .008 to be significant.

RESULTS

Of 558 721 adolescents undergoing inpatient surgery from 2009 to 2022, 2604 (0.5%) were diagnosed with CUD (2483 were propensity matched). The prevalence of CUD increased from 0.4% in 2009 to 0.6% in 2022 (P < .001). The adjusted odds of respiratory complications, ICU admission, mechanical ventilation, and extended hospital stay were significantly higher in adolescents with CUD (respiratory complications: odds ratio [OR], 1.52; 95% confidence interval [CI], 1.16-2.00; P = .002; ICU admission: OR, 1.78; 95% CI, 1.61-1.98; P < .001; mechanical ventilation: OR, 2.41; 95% CI, 2.10-2.77; P < .001; extended hospital stay: OR, 1.96; 95% CI, 1.74-2.20; P < .001). The propensity score-adjusted odds of postoperative mortality or stroke for adolescents with CUD were not significantly increased (mortality: OR, 1.40; 95% CI, 0.87-2.25; P = .168; stroke: OR, 2.46; 95% CI, 1.13-5.36; P = .024).

CONCLUSIONS

CUD is increasing among adolescents scheduled for surgery. Given its association with postoperative complications, it is crucial to screen adolescents for cannabis use to allow timely counseling and perioperative risk mitigation.

Cannabis use Disorder and Complications After Anterior Cervical Diskectomy and Fusion

OBJECTIVE

The aim of this study, a retrospective database analysis, was to assess the impact of baseline cannabis use disorder (CUD) on perioperative complication outcomes in patients undergoing primary 1- to 2-level anterior cervical diskectomy and fusion (ACDF) surgery.

METHODS

The PearlDiver Database was queried from January 2010 to December 2021 for patients who underwent primary 1- to 2-level ACDF surgery for degenerative spine disease. Patients with CUD diagnosis 6 months before the index ACDF surgery (i.e., CUD) were propensity matched with patients without CUD (i.e., control in a ratio of 1:1, employing age, gender, and Charlson Comorbidity Index as matching covariates). Univariate and multivariable analysis models with adjustment of confounding variables were used to evaluate the risk of CUD on perioperative complications between the propensity-matched cohorts.

RESULTS

The 1:1 matched cohort included 838 patients in each group. Following multivariate analysis, CUD was demonstrated to be associated with an increased incidence of hospital readmission at 90 days (odds ratio [OR] = 2.64, 95% confidence interval: [1.19 to 6.78], [P = 0.027]) and revision surgery at 1 year postoperative (OR = 3.36, 95% confidence interval: [1.17 to 14.18], [P = 0.049]). CUD was additionally associated with reduced risk of overall medical complications at both 6 months and 1 year postoperative (OR = 0.55, [P = 0.021], and OR = 0.54, [P = 0.015], respectively).

CONCLUSIONS

These findings indicate that isolated baseline CUD is associated with an increased risk of hospital readmission at 90 days postoperative and cervical spine reoperation at 1 year after primary 1- to 2-level ACDF surgery with a decrease in overall medical complications, cardiac arrhythmias, and acute renal failure.

Venous thromboembolism and cannabis consumption, outcomes among hospitalized patients in the United States: A nationwide analysis

Venous Thromboembolism (VTE) carries significant clinical implications, and with the rise in cannabis consumption, its potential influence on VTE outcomes warrants investigation. Using the National Inpatient Sample (NIS) database (2016-2019), we analyzed 2,217,184 hospitalized VTE patients. Among these, 1.8 % (38,810) reported cannabis use. We compared demographics, comorbidities, in-hospital outcomes, and quality metrics between cannabis users and non-users with VTE. Cannabis users were chiefly younger males (average age 45 in cannabis users vs. 62 in non-cannabis users) from lower-income brackets. Notably, 5.4 % discharged against medical advice. Although in-hospital mortality was initially lower for cannabis users (2.8 % vs. 5.1 %, OR 0.6, 95 % CI 0.69-0.94, p = 0.008), this difference became non-significant post-propensity-score matching (aOR 0.9, 95% CI 0.72-1.10, p = 0.3). Non-users faced higher in-hospital complications, a trend that persisted post-PSM. Among cannabis users, key mortality predictors were peripheral vascular disease, acute kidney injury, vasopressor use, cardiogenic shock, myocardial infarction, invasive ventilation, and surgical embolectomy. Cannabis users also had a shorter hospital stay (4.2 vs. 5.4 days) and slightly reduced costs ($27,472.95 vs. $31,660.75). The significantly younger age of VTE patients who use cannabis, coupled with the considerable proportion discharging against medical advice, underscores the urgency for tailored care interventions. Additional research is vital to comprehensively understand the interplay between cannabis consumption and VTE outcomes.