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Heart Disease Health Center

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Stents Overused in Stable Heart Patients

Study Finds No Benefit of Stents Over Using Medications First
WebMD Health News
Reviewed by Louise Chang, MD

Feb. 27, 2012 -- As many as 2 out of 3 elective heart angioplasty procedures performed in the U.S. on patients with stable heart disease may not be needed, a new research review suggests.

The analysis of eight large clinical trials found that the addition of opening narrowed arteries with stents provided no added benefit over aggressive therapy with medication alone as a first treatment for patients with stable disease.

Stents are small mesh tubes that are often inserted during angioplasty to prop open blood vessels and help them stay unblocked. Angioplasty is a nonsurgical procedure that uses a small balloon to open up a blocked artery.

Compared to medication alone, stenting plus medication did not result in fewer deaths, non-fatal heart attacks, or emergency bypass procedures; or improvements in symptoms such as chest pain over four years of follow-up.

Researcher David L. Brown, MD, of Stony Brook University Medical Center in New York, says far too many stent procedures are performed in the United States each year in patients who have not first been offered medication to manage heart attack and stroke risk factors.

“In our analysis a third of patients ended up needing stents because medical management was not effective for relieving symptoms, but two-thirds did not need them,” Brown says.

Stents Recommended for Chest Pain Relief

While the benefits of opening newly blocked arteries during a heart attack are clear, several recent, widely reported studies have found little benefit for angioplasty with or without stents outside of an emergency situation.

More than 400,000 non-emergency coronary stenting procedures are performed each year in the U.S., according to the American Heart Association (AHA).

If two-thirds of these operations were avoided, the savings in health care dollars would be huge, Brown says.

By one estimate, reducing elective stent procedures by just one-third would save the U.S. health system $6 billion to $8 billion annually.

The AHA and the American College of Cardiology (ACC) recommend aggressive treatment with medications as the initial therapy for patients with stable angina (heart-related chest pain with exertion) or narrowed arteries with no symptoms.

Yet a recent study found that more than half of patients with these conditions underwent angioplasty and stent procedures before drug treatment.

The new analysis, published in the journal Archives of Internal Medicine, included a total of 7,229 patients with stable heart disease treated between 1997 and 2005.

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