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Correspondence
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Volume 339:1398-1399 November 5, 1998 Number 19
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Sudden Death Due to Low-Energy Chest-Wall Impact (Commotio Cordis)

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 by Link, M. S.
To the Editor: Link et al. (June 18 issue)1 developed an animal model of commotio cordis. Ventricular fibrillation was reproducibly and instantaneously initiated by impacts to the chest during a narrow temporal window on the upstroke of the T wave in young pigs under general anesthesia.

Swine may have a low threshold for ventricular fibrillation as a species-specific characteristic. Radio-frequency ablation in humans rarely leads to ventricular fibrillation.2 However, in a study of the long-term effects of this procedure,3 all 10 young German Landrace pigs (mean [±SD] weight, 13.9±2.1 kg) had ventricular fibrillation when radio-frequency current was delivered to the . . . [Full Text of this Article]

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