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Table 1 Marijuana cardiovascular effects.

From: Ventricular fibrillation triggered by marijuana use in a patient with ischemic cardiomyopathy: a case report

System affected Clinical implications Comments
Autonomic Nervous System: Increase norepinephrine release Sinus tachycardia Hypertension Healthy volunteers
Increased sinus automaticity Sinus tachycardia Healthy volunteers
Facilitated conduction velocity Supraventricular and/or ventricular tachycardia, PVC Healthy volunteers/structural heart disease
Vascular periphery: dysfunctional baroreceptor activity Vasovagal syncope/hypotension  
Coronary arteries Coronary artery disease (AMI) Controversial
Central Nervous system Stroke Controversial
  1. PVC: premature ventricular contraction; AMI: acute myocardial infarction