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Two Cheers for Evidence-Based Medicine

In recent years, evidence-based medicine has had an important influence on cardiovascular devices, but it's easy to overlook the staying power of subjective judgment. At a session on "What's the Science on Niche Devices?" held during this year's American Heart Association meeting, the cardiologist-audience clearly didn't seem deterred from using certain devices such as DCA and rotoblators, despite equivical or mediocre results in clinical trials.

At this year's American Heart Association (AHA) meeting, the title of the Sunday morning clinical session on interventional cardiology, "What's the Science on Niche Devices?," precisely captured the growing influence of evidence-based medicine in cardiology today. Assessing the value of four different interventional devices—devices used in direct coronary atherectomy (DCA), rotoblators, cutting balloons, and the AngioJet anti-thrombus device—cardiologists reviewed the relevant clinical trials to determine when each device has proven effective and when it hasn't.

The data on the AngioJet device, manufactured by Possis Medical Inc. , and the cutting balloon, developed by Interventional...

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