A case of cardiac tamponade in a synthetic cannabinoid user raises questions about cardiovascular risk | Research

The takeaway

A case of cardiac tamponade (fluid compression of the heart) was reported in a person who tested positive for synthetic cannabinoids, adding to growing evidence of serious cardiovascular toxicity from these substances.

Emergency physicians, cardiologists, and toxicologists encountering unexplained cardiovascular emergencies.

Cardiac tamponade reported

What the researchers found

The report documents a cardiac tamponade case with toxicology positive for synthetic cannabinoids. The authors reviewed evidence that synthetic cannabinoids can affect the cardiovascular system through multiple mechanisms including hypotension, bradycardia, myocardial infarction, arrhythmias, and interference with platelet aggregation.

Why it matters

Cardiac tamponade is a life-threatening emergency that has not been widely associated with synthetic cannabinoid use. This case expands the known range of cardiovascular complications and highlights the importance of toxicology testing for novel psychoactive substances.

The numbers in context

Toxicology was positive for synthetic cannabinoids. Known SC cardiovascular effects include: hypotension, bradycardia, myocardial infarction, atrial fibrillation, prolonged QTc, and Mobitz type II atrioventricular block.

How the study worked

Single case report with toxicological analysis and literature review of synthetic cannabinoid cardiovascular effects.

What this study cannot tell us

A single case report cannot establish causation. Other contributing factors to the cardiac tamponade may have been present. The specific synthetic cannabinoid compound was not identified.

How to read the evidence

Rated preliminary because this is a single case report without ability to establish causation.

When this study was published

Published in 2019.

The bigger picture

Each new cardiovascular complication reported with synthetic cannabinoids reinforces how different these substances are from natural cannabis. The variety of cardiac effects suggests multiple mechanisms of cardiovascular toxicity.

Questions still open

What is the mechanism by which synthetic cannabinoids could cause cardiac tamponade? Is this a direct drug effect or related to secondary inflammation? How common are severe cardiovascular events among regular SC users?

Common questions

What is cardiac tamponade?

A life-threatening condition where fluid accumulates around the heart, compressing it and preventing it from pumping effectively. It requires emergency treatment.

Can synthetic cannabinoids cause heart problems?

Growing evidence links them to multiple cardiovascular complications including heart attacks, dangerous arrhythmias, and now potentially cardiac tamponade, though this last association is based on a single case.

Read the original research

A case report positive for synthetic cannabinoids: are cardiovascular effects related to their protracted use?

Legal medicine (Tokyo, Japan), 41, 101637

View on PubMed ↗Publisher’s paper ↗

Citation

Anzillotti, Luca; Marezza, Francesca; Calò, Luca; Banchini, Antonio; Cecchi, Rossana. (2019). A case report positive for synthetic cannabinoids: are cardiovascular effects related to their protracted use?. Legal medicine (Tokyo, Japan), 41, 101637. https://doi.org/10.1016/j.legalmed.2019.101637