Cardiac Rehabilitation May Lower All-Cause Mortality Rate

But CR after percutaneous coronary intervention does not lower MI or revascularization rates

WEDNESDAY, May 18 (HealthDay News) -- Participation in cardiac rehabilitation (CR) after percutaneous coronary intervention (PCI) is associated with a significant decrease in all-cause mortality rates, according to a study published online May 16 in Circulation.

Kashish Goel, M.B.B.S., from the Mayo Clinic in Rochester, Minn., and colleagues assessed the impact of CR on mortality and cardiovascular events after PCI. A retrospective analysis of 2,395 patients who underwent PCI in Olmstead County, Minn., from 1994 to 2008 was conducted. The correlation between CR and all-cause mortality, cardiac mortality, myocardial infarction, or revascularization during an average follow-up of 6.3 years was assessed using different statistical analyses.

The investigators found that, during follow-up, there were 503 deaths (199 of which were cardiac), 394 myocardial infarctions, and 755 revascularizations. CR participation, recorded in 40 percent of the total cohort, was correlated with a significant reduction in all-cause mortality as assessed by all statistical analyses (hazard ratio, 0.53 to 0.55). CR participants had a trend toward reduced cardiac mortality, but not subsequent myocardial infarction or revascularization. The association between CR and reduced mortality was not affected by age, gender, or elective and nonelective PCI.

"Data from our cohort provide evidence for a significant association between CR participation and lower mortality rates for patients undergoing PCI," the authors write.

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