Heavy Cannabis Use Linked to Higher Risks in Heart Surgery

This nationwide study examined hospital outcomes for patients with cannabis use disorder (CUD) who underwent cardiovascular surgery, using a large U.S. national database to compare results against non-CUD patients. This is one of the first large-scale analyses to specifically investigate how a diagnosed pattern of heavy cannabis use intersects with the serious risks of open-heart and major vascular procedures. The findings shed important light on a growing public health concern, as cannabis use continues to rise across the United States following widespread legalization.

Patients identified with CUD showed significantly different in-hospital morbidity and mortality profiles compared to those without the disorder. The study found notable associations between cannabis use disorder and complications such as respiratory failure, stroke, and infections, which are already serious risks in cardiac surgery. Importantly, the CUD population tended to be younger and had distinct comorbidity profiles, including higher rates of tobacco and other substance use, making it critical for surgeons and anesthesiologists to account for cannabis history during pre-operative assessments.

The broader implication of this research is a call to action for improved screening and pre-surgical counseling for cannabis users facing cardiac procedures. As the prevalence of CUD rises in surgical populations, clinicians need updated protocols to manage associated risks. For everyday cannabis users, the study underscores that heavy, dependent cannabis use is not without serious cardiovascular and surgical consequences, and that disclosure to healthcare providers before any major surgery is essential for safer outcomes.