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The risk of sudden death or cardiac arrest after surviving a heart attack is highest during the first 30 days. Researchers form the Brigham and Women’s Hospital in Boston, documented the outcomes of 14,609 patients who had experienced a heart attack. All were being treated with standard drug therapy and aspirin. During an average follow-up of 2 years, there were 903 sudden deaths and 164 resuscitations after cardiac arrest. Overall, the risk of one of these events was 1.4 percent per month during the first 30 days, declining to 0.14 percent per month after 2 years. Even among patients with the best heart function, the rate of sudden death or cardiac arrest with resuscitation was more than six times as high in the first month as after one year. The findings suggest the need to consider implementing strategies to prevent sudden death in selected patients before the time recommended by current guidelines. An implantable cardioverter-defibrillator (ICD) can automatically administer a shock
The risk of sudden death after a heart attack has improved significantly over the past three decades, but the first 30 days remain a period of great danger, an historical study shows. The study looked at the experiences of almost 3,000 residents of Olmsted County in Minnesota who had heart attacks between 1979 and 2005. “There were two main aspects of the study that we did not necessarily anticipate,” said Dr. Veronique Roger, a professor of medicine and epidemiology at the Mayo Clinic, and lead author of the report in the Nov. 5 issue of the Journal of the American Medical Association . “One was how much the risk of sudden death after a heart attack has decreased over time. The magnitude of decline was 40 percent over the study period.
