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By the way, doctor: How can a stress test be wrong?

Updated: November 01, 2008

Q. How is it possible for someone with significant coronary artery disease to perform well on a cardiac stress test? Wouldn't there be some signs of trouble?

A. We rely on tests to spot health problems early, so it's unnerving when we hear about someone like newsman Tim Russert, who suddenly died from heart disease soon after passing a stress test.

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