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Surprising trends in cause of long-term death after percutaneous coronary intervention

Date:
February 10, 2014
Source:
Mayo Clinic
Summary:
More people who have known coronary heart disease die from other causes -- such as cancer, and lung and neurological diseases -- than heart disease, compared with 20 years ago, according to a study published.

More people who have known coronary heart disease die from other causes -- such as cancer, and lung and neurological diseases -- than heart disease, compared with 20 years ago, according to a Mayo Clinic study published online today in Circulation, an American Heart Association journal.

The researchers evaluated the trends in cause-specific, long-term mortality from 1991 to 2008 in patients at Mayo Clinic in Rochester who underwent percutaneous coronary intervention (PCI), a procedure used to open clogged heart arteries. They broke the study population into three eras: 1991 to 1996, 1997 to 2002, and 2003 to 2008. Cardiac deaths predominated in the first era and were about equal with non-cardiac deaths in the middle era. In the final era -- the modern-era (2003 to 2008) -- non-cardiac deaths dominated.

Approximately 20,000 PCI patients were studied. Of those, nearly 7,000 patients died within the study time frame. Among that group, only 37 percent of deaths in the modern-era (2003-2008) were cardiac-related.

"We found that patients with established heart disease undergoing angioplasty and stenting in the modern era have about a 1 in 3 chance of dying from their heart disease, and a 2 in 3 chance of dying from non-cardiac diseases in the long term," says Rajiv Gulati, M.D., Ph.D., senior author and Mayo Clinic interventional cardiologist.

The results surprised the authors, Dr. Gulati says. First, patients undergoing angioplasty in the modern era have gotten older, with more complex coronary disease and more risk factors compared with years ago. So, the authors were expecting their cardiac death rates to have increased. "In addition, in randomized clinical trials of PCI, deaths from cardiac disease still predominate," he says. The authors believe the sharp decline in long-term cardiac deaths in these patients may result from improved cardiac therapies. For example, more patients today with established heart disease take medications to lower cholesterol, prevent heart failure, and decrease blood pressure, and technologies used in catheterization laboratories -- where PCI is performed -- have improved, Dr. Gulati says.

Of the cardiac-specific deaths, deaths from heart attack and sudden heart rhythm disturbances declined steeply, but there was no decline in deaths from heart failure.

"These results show that we have an opportunity to focus on the non-cardiac diseases in these patients -- to treat the patient holistically," Dr. Gulati says. "But it also gives us the opportunity to identify and target those patients who are at risk of dying from heart disease."


Story Source:

The above story is based on materials provided by Mayo Clinic. Note: Materials may be edited for content and length.


Journal Reference:

  1. D. B. Spoon, P. J. Psaltis, M. Singh, D. R. Holmes, B. J. Gersh, C. S. Rihal, R. J. Lennon, I. D. Moussa, R. D. Simari, R. Gulati. Trends in Cause of Death after Percutaneous Coronary Intervention. Circulation, 2014; DOI: 10.1161/CIRCULATIONAHA.113.006518

Cite This Page:

Mayo Clinic. "Surprising trends in cause of long-term death after percutaneous coronary intervention." ScienceDaily. ScienceDaily, 10 February 2014. <www.sciencedaily.com/releases/2014/02/140210161112.htm>.
Mayo Clinic. (2014, February 10). Surprising trends in cause of long-term death after percutaneous coronary intervention. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2014/02/140210161112.htm
Mayo Clinic. "Surprising trends in cause of long-term death after percutaneous coronary intervention." ScienceDaily. www.sciencedaily.com/releases/2014/02/140210161112.htm (accessed October 21, 2014).

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