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. 2007 Oct 22;7(4):235–245.

Figure 3.

Figure 3

Six lead electrocardiogram and intraventricular pressure measurement from and 11 kg swine undergoing a 48 km/h (30 mph) chest wall impact with an object the shape and weight of a standard baseball. Ventricular fibrillation is produced immediately upon impact within the vulnerable zone of repolarization (10-30 ms prior to the peak of the T-wave). Reprinted from: Link MS, Maron BJ, VanderBrink BA, et al. Impact directly over the cardiac silhouette is necessary to produce ventricular fibrillation in an experimental model of commotio cordis. J Am Coll Cardiol 2001;37(2):649-54. Copyright 2001, with permission from Elsevier.