The most important factor that influences the outcome of penetrating cardiac injuries is:
Correct Answer: Coronary artery injury.
Description: Multiple studies in the literature confirm that injuries to the coronary arteries are the most important factor in determining outcome after a penetrating cardiac injury. Tangential injuries are the least serious. Injury to a single chamber—even if comminuted—or to multiple chambers is less likely to be fatal than are injuries that involve a major coronary artery.
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