Transient electrocardiographic changes following smoking cannabis

Abstract

Abstract We report a case of transient ECG abnormalities (negative T waves in the inferior leads) associated with presyncope related to acute cannabis consumption; after a few hours the ECG returned normal. Although pathophysiological mechanisms are not clear, it might be hypothesize a mismatch between increased oxygen demand and decreased oxygen supply or a marked hyperactivation of the sympathetic nervous system.

Keywords

• cannabis
• ECG
• repolarization abnormalities
• sinus tachycardia
• sympathetic hyperactivity