Wrist and Hand Conditions
Wrist and Hand Conditions
Wrist and Hand Conditions
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Commotio cordis or cardiac<br />
concussion<br />
Commotio cordis is an electrophysiological event<br />
caused by precordial chest impact that occurs in<br />
individuals free from structural cardiac disease.<br />
The mechanism of SCD appears to be ventricular<br />
fibrillation that is produced when the chest impact<br />
is delivered within a narrow, electrically vulnerable<br />
period of the cardiac cycle.<br />
Specifically, the susceptible time is during<br />
repolarization, 10–30 msec before the peak of the<br />
T wave.<br />
Resuscitation of these victims is possible with<br />
prompt CPR <strong>and</strong> defibrillation.