Although
coronary artery bypass surgery is beneficial to patients with severe
coronary artery disease, its role in preventing the recurrence of prehospital
cardiac arrest in patients is not clear. In this article, we report on the long-term follow-up of 49 survivors of prehospital coronary arrest who had
coronary artery bypass surgery. Prior to their prehospital
cardiac arrest, 14% of the patients had a history of
unstable angina. Coronary angiograms obtained after prehospital
cardiac arrest showed that 71% of the patients had three-vessel coronary artery disease and 6% had single-vessel disease. The mean left ventricular ejection fraction was 45%. There were four postoperative deaths; three were caused by pump failure, and one was caused by refractory ventricular arrhythmias. After a maximum follow-up period of 102 months (mean of 55.4 months), there were seven cardiac deaths; five of the patients died of recurrent
ventricular fibrillation, and two patients' deaths were related to refractory
heart failure. Actuarial analyses of the 49 patients showed that the probability of survival at 6 months, 1 year, 2 years, 3 years, and 5 years was 92%, 92%, 89%, 82%, and 72%, respectively. After surgery, 35 of the 45 patients who were discharged from the hospital were asymptomatic, and 23 of the 32 patients who were employed when their prehospital
cardiac arrest occurred returned to their employment. We concluded that
coronary artery bypass surgery is beneficial to certain survivors of prehospital
sudden death. After surgery, most patients are asymptomatic and capable of returning to their employment and the recurrence of prehospital
sudden death is low.