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Commotio Cordis

Rare arrhythmia that can result from a blunt, non-penetrating impact to the precordial region (typically the apical region), often caused by impact of a ball, a bat or other projectile. The impact is transmitted to the heart muscle, and depending on the precise timing in relation to the cardiac cycle, it may affect the heart's electrical activity, causing an arrhythmia, such as an ectopic beat, ventricular tachycardia or ventricular fibrillation.