Study finds room for improvement in angioplasty, shows what can be done to cut risks

Each year, more than 600,000 Americans have angioplasty procedures to open clogged arteries near their hearts, and treat or prevent a heart attack. But a new study shows that the quality and risk of their treatment can vary widely depending on where they go and demonstrates how it could be improved.

In a paper published in the journal Circulation, a group of Michigan researchers reports data from a multi-hospital project that studied angioplasty care and outcomes at five hospitals where doctors and nurses received guidance and data to help them improve angioplasty care, and seven hospitals where they did not.

The project is led by researchers from the University of Michigan Cardiovascular Center and was initially funded by the Blue Cross Blue Shield of Michigan Foundation, with ongoing funding from Blue Cross Blue Shield of Michigan and Blue Care Network. It's called the Blue Cross Blue Shield of Michigan Cardiovascular Consortium, or BMC2.

The results yielded a dramatic "before" and "after" contrast. Before the start of the project, the 3,731 patients treated at the five hospitals in one year received widely varying levels of care. Many never received drugs that could help prevent complications during or after their angioplasty, while others received far more than necessary of the blood-thinning drug heparin, or the dye that lets doctors see blockages while they perform the minimally invasive procedure.

There was also wide variation in how patients did afterward, including their risk of kidney damage related to the dye, and their need for emergency heart surgery and blood transfusions.

But five years later, after the intensive quality-improvement project was under way, the 5,901 patients treated at the same five hospitals in that year received much better and more uniform care, including much higher rates of preventive medication use, less use of heparin, and more appropriate amounts of dye. They also did better overall,

Contact: Kara Gavin
University of Michigan Health System

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