THE MANAGEMENT OF PENETRATING CARDIAC TRAUMA WITH MAJOR CORONARY ARTERY INJURY-IS CARDIOPULMONARY BYPASS ESSENTIAL?

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Abstract
Major coronary artery injury in penetrating cardiac trauma is relatively uncommon and is associated with a poor prognosis. However, for a variety of reasons, the outcome for such patients has been improving during the last two decades. The main factor responsible for this change is, according to some authors, the use of emergency cardiopulmonary bypass (CPB). We present a case of complete transection of the LAD coronary artery managed by primary ligation of the vessel, but because of progressive signs of extensive myocardial infarction, the patient underwent emergency CPB and an aortocoronary bypass graft. The patient experienced a good cardiac recovery but died 5 days later of irreversible anoxic brain damage. In reviewing the literature concerning the absolute need for emergency CPB in the management of penetrating coronary artery injury (PCAI), we found that the overall outcome for patients treated with emergency CPB was not significantly better than for those treated with ligation alone. We believe that CPB is not always essential in the management of PCAI and should be instituted only when the injury to a main coronary artery is very proximal, whenever associated intracardiac injuries exist, or when the patient develops extensive myocardial infarction or uncontrolled arrhythmias following ligation of the injured coronary vessel.

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