By Nicholas Bakalar
Doctors who earn money for cardiac stress testing are much more likely to prescribe the tests than those who don’t, a new study has found.
Researchers at Duke University studied data on 17,847 patients nationwide who had cardiac bypass surgery or coronary angioplasty, checking to see how often doctors prescribed nuclear stress tests and echocardiograms later than 90 days after discharge. Their results appeared Wednesday in The Journal of the American Medical Association.
Among doctors who billed for administering and interpreting a stress test, 12.6 percent prescribed the test, compared with 5 percent of those who were not paid for testing. Results for echocardiograms were similar: 2.8 percent of patients were tested by doctors who billed for both test and interpretation, and 0.4 percent by those who were paid for neither.
“If you’re having symptoms or a change in health status, testing is appropriate,” said Dr. Bimal R. Shah, the lead author of the analysis and a fellow in cardiology at Duke. “But in situations where there aren’t any clinical indications for tests, these reimbursement structures seem to be associated with increased testing use.”
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