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Heart Disease Health Center

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Heart Attacks Down Sharply, Study Finds

24% Decline in Heart Attack Hospitalizations in California Population Since 2000
WebMD Health News
Reviewed by Laura J. Martin, MD

June 9, 2010 -- Fewer Americans are having heart attacks, and more people who do have them are surviving, new research confirms.

Between 2000 and 2008, heart attack hospitalizations declined by 24% among enrollees of the health care provider Kaiser Permanente living in northern California.

Heart attack deaths also dropped, in large part because of an even steeper decline in a particularly deadly type of heart attack known as ST-elevation myocardial infarction, Kaiser researchers reported in the June 10 issue of the New England Journal of Medicine.

A study of Medicare recipients reported in early April showed a similar reduction in heart attack- related hospital admissions among elderly Americans between 2002 and 2007.

Experts say the precipitous decline confirms that better management of heart disease risk factors such as high blood pressure and high cholesterol is having an impact, as are efforts to reduce smoking, ban smoking in public places, and get people to eat healthier and exercise.

“This is really very good news, and it is a pretty strong indication that aggressive treatment of heart disease risk factors is making a difference,” American Heart Association spokesperson and Northwestern University assistant professor of preventive medicine Mercedes Carnethon, PhD, tells WebMD.

Heart Attacks, Deaths Declining

Between 1999 and 2008, just over 46,000 heart attack hospitalizations occurred among about 3 million enrollees of the Kaiser Permanente Northern California health system.

The analysis of hospital data revealed that heart attacks declined steadily from 2000 to 2008 -- the last year for which data were available.

During the same period, the percentage of patients whose blood pressure was controlled to target levels doubled, from 40% to 80%.

Target low-density lipoprotein (LDL) levels were lowered in patients with coronary disease during the period, from less than 130 milligrams per deciliter to less than 100 milligrams per deciliter. Even so, more people reached the target LDL level in 2008 than in 1999 (73% vs. 67%).

Of the 4,068 Kaiser enrollees hospitalized for heart attacks in 2008, 76% had poorly controlled high blood pressure, 80% had high LDL cholesterol, and 32% had diabetes.

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