Cannabis Users Had 3x Higher Odds of Serious Complications After Heart Attacks

Systematic urine screening across 39 French hospitals found 11.1% of acute coronary syndrome patients tested positive for cannabis. After adjusting for other risk factors and severity predictors, cannabis detection was associated with 3.28 to 3.68 times higher odds of major adverse events including death, cardiac arrest, and cardiogenic shock.

Prospective multicenter study across 39 intensive cardiac care units in France over two weeks in April 2021. All consecutive patients admitted for acute coronary syndrome underwent systematic urine drug screening. Major adverse events were tracked during hospitalization.

Most cardiovascular cannabis research relies on self-reported use. This study used objective urine testing in a real-world hospital setting, providing harder evidence for a link between cannabis use and worse outcomes after heart events.

This study adds to growing evidence that cannabis use may complicate cardiovascular events. As cannabis use becomes more common, understanding its interaction with acute cardiac conditions becomes increasingly relevant for emergency medicine.

Urine testing detects recent use but does not confirm acute intoxication at the time of the cardiac event. Two-week enrollment period may limit generalizability. Observational design cannot establish causation.