Forty-nine war casualties with penetrating cardiac wounds were treated at the Hôtel-Dieu de France University Hospital between April 1975 and December 1987. All the wounds were caused by high-velocity missiles. An aggressive approach was utilized. Emergency room thoracotomy was performed in 17 “lifeless” patients, 4 of whom survived. Twenty-seven of the 32 patients who were in stable enough condition to undergo initial repair in the operating room survived. Overall survival was 63% ( 31 / 49 ). No intracardiac injuries were diagnosed in survivors, and no cardiac reoperations were required. Careful analysis of the trajectory of the missile or missiles and a portable chest roentgenogram were the most important factors for diagnosing a penetrating wound to the heart and for predicting potential associated injuries.