A 19 year old male is unresponsive, apneic, and pulseless after being struck in the center of the chest with a softball. Based on the mechanism of injury, what MOST likely occurred?
A. collapse of both lungs due to fractured ribs that perforated the lung tissue and caused cardiac arrest
B. asystole secondary to massive intrathoracic hemorrhage due to traumatic rupture of the aorta
C. ventricular fibrillation when the impact occurred duing a critical portion of the cardiac cycle
D. fracture of the sternum that caused a rupture of the myocardium and let to a cardiac dysrhythmia
Answer: C. ventricular fibrillation when the impact occurred duing a critical portion of the cardiac cycle
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