Chest wall trauma causes ventricular fibrillation

Differences in the frequency with which ventricular fibrillation resulted from chest-wall impact at 30 miles per hour during the period of cardiac cycle vulnerable to induction of ventricular fibrillation, ie, from 30 to 15 ms before T-wave peak.

* p<0.03 for the differences between regulation baseball and very soft baseball.

¶ p<0.01 for the differences between wooden object and each type of baseball.

Data from: Link MS, Wang PJ, Pandian NG, et al. An experimental model of sudden death due to low-energy chest-wall impact (commotio cordis). N Engl J Med 1998; 338:1805.

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