What topics does this cannabis study cover?

This study covers research on: THC.

Where was this research published?

Published in The American surgeon on August 23, 2026.

Cannabis-linked trauma survival came with more hospital complications

Q: What did this research study find?

Among trauma patients, a positive *cannabinoid* screen was associated with **lower odds of 30-day mortality** compared with a negative screen.

Dissecting the Impact of Substance Use on Trauma: High Morbidity Does Not Uniformly Dictate Increased Mortality.

The American surgeon • August 23, 2026 • Moderately Relevant

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AI Summary

This retrospective study examined trauma outcomes among adults with positive or negative urine drug screens using the American College of Surgeons Trauma Quality Improvement Program database from 2013 to 2021. The analysis included 704,033 patients and compared groups after matching for age, sex, and injury severity. Patients with polysubstance use were excluded, and the substances studied included cannabinoids alongside several other drug classes.

A positive cannabinoid screen was associated with lower odds of 30-day mortality but also higher odds of in-hospital complications. These findings do not show that cannabis protects against death or causes complications, because the study was observational and a urine screen cannot establish timing, dose, impairment, or even which cannabinoid was involved. For cannabis users, the practical message is that a positive screen should not be interpreted as evidence that cannabis makes serious injuries safer; trauma teams may still need to pay close attention to complications. The authors also note that substance use may have been underreported.

💡 Key Findings

Among trauma patients, a positive cannabinoid screen was associated with lower odds of 30-day mortality compared with a negative screen.

Good

78%

A positive cannabinoid screen was also associated with higher odds of in-hospital complications, indicating that lower mortality did not mean an uncomplicated recovery.

Good

78%

The study found substance-specific differences in trauma outcomes, but its retrospective design and possible underreporting mean the results do not establish that cannabis directly caused either outcome.

Good

75%

📄 Original Abstract

IntroductionSubstance use is a known risk factor for traumatic injury. While prior studies have evaluated outcomes associated with individual substances, there is a paucity of literature comparing outcomes across multiple drug classes. This study aimed to compare 30-day mortality and in-hospital complications among trauma patients with positive vs negative urine drug screens (UDS).MethodsWe conducted a retrospective study using the American College of Surgeons Trauma Quality Improvement Program (TQIP) database from 2013 to 2021. Adult patients aged 18-90 years with a recorded UDS were included, and those with polysubstance use were excluded. Positive UDS was defined as detection of amphetamines, barbiturates, cocaine, methamphetamine, 3,4-methylenedioxymethamphetamine (MDMA), phencyclidine (PCP), tricyclic antidepressants (TCA), or cannabinoids. Each positive cohort was matched to a negative cohort by age, sex, and injury severity score. Logistic regression was used to estimate odds ratios (ORs).ResultsA total of 704,033 patients were included. Positive screens for amphetamines (OR 0.82, P < 0.001), cocaine (OR 0.78, P < 0.001), and cannabinoids (OR 0.67, P < 0.001) were associated with lower odds of 30-day mortality. No significant mortality differences were observed for other substances. Higher odds of in-hospital complications were observed for TCA (OR 1.74), PCP (OR 1.61), methamphetamine (OR 1.41), cocaine (OR 1.30), amphetamines (OR 1.22), and cannabinoids (OR 1.11) (all P < 0.001), barbiturates and MDMA were not significant.ConclusionSubstance-specific differences exist in trauma outcomes. While some substances are associated with decreased mortality, many are associated with increased complications, suggesting a need to prioritize complication-focused management. Limitations include underreporting of substance use.

Paper Type

📄 Research

Publication

Journal: The American surgeon
Published: August 23, 2026
PMID: 42634392
DOI: 10.1177/00031348261480799

Authors (5)

Dallas T Ryan Department of Surgery, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA.
Mary Matecki Department of Surgery, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA.
Jayati Atahar Department of Surgery, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA.
Sean Lee Department of Surgery, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA.
Susan Kartiko Department of Surgery, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA.