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Heart Disease: Combined Treatment Is Best

Heart Patients Fare Better When They Fix Both Blood Pressure and Cholesterol, Study Shows
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March 23, 2009 -- Heart disease patients who achieve normal blood pressure and very low cholesterol levels with aggressive drug therapy do better than patients who achieve only one of these goals, new research suggests.

Using ultrasound to identify plaque buildup within the artery walls as a measure of disease progression, Cleveland Clinic researchers found that patients who were able to get their low-density lipoprotein (LDL) cholesterol below 70 mg/dL and their systolic blood pressure (the top number in a blood pressure reading) below 120 with medication had less plaque buildup over the course of the study than patients who reached just one or neither of these targets.

The findings highlight the importance of treating all risk factors for heart disease progression, rather than targeting just one, study co-author Stephen J. Nicholls, PhD, tells WebMD.

“I think sometimes we aggressively try to manage one risk factor and lose sight of the fact that we need to manage all of them,” Nicholls says. “If we want to get the greatest bang for our buck in terms of treatment, we need to focus on all risk factors.”

‘Lower Is Better’ for LDL

Earlier research by Nicholls and Cleveland Clinic colleagues helped establish the “lower is better” strategy for controlling LDL cholesterol with statin drugs like Lipitor, Crestor, and Zocor in patients at high risk for having heart attacks, strokes, or other cardiovascular events.

As a result of their work and the work of others, national treatment goals for LDL were recently lowered to less than 100 for patients with established heart disease and less than 70 for the highest-risk patients.

Current guidelines identify a resting systolic blood pressure of 120 or below as normal; a reading of 140 or above is high.

A reading of between 120 and 140 is considered "prehypertension.”

There are no widely accepted guidelines for treating patients who fall into this category, but the new research suggests that maybe there should be, Nicholls says.

“We know that (heart attack and stroke) risk starts to increase at about 115,” he says. “This study suggests that treating to lower blood pressure levels is probably beneficial, but we need clinical trials to test this.”

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