Cannabis-Induced Third-Degree AV Block

Area of Science:

• Cardiology
• Emergency Medicine
• Pharmacology

Background:

• Cannabis is a widely used illicit drug in Europe.
• Potential cardiovascular side effects of cannabis are often overlooked.
• Awareness of these risks is crucial for healthcare professionals.

Observation:

• A 19-year-old male presented with palpitations and presyncope post-cannabis consumption.
• Diagnosis revealed third-degree atrioventricular block (complete heart block).
• Extensive cardiac work-up yielded negative results, suggesting cannabis as the likely cause.

Findings:

• Cannabis exposure was identified as the probable cause of the patient's bradycardia.
• The patient's condition resolved spontaneously within one day after cannabis cessation.
• No further medical intervention was required beyond initial supportive care.

Implications:

• This case underscores the potential for cannabis to induce significant cardiovascular events.
• Emergency physicians must be vigilant for cardiac complications associated with marijuana use.
• Further research into the mechanisms of cannabis-induced cardiotoxicity is warranted.