alexa Ergonovine maleate testing during cardiac catheterization: A 10-year perspective in 3,447 patients without significant coronary artery disease or Prinzmetal's variant angina
Clinical Sciences

Clinical Sciences

Cardiovascular Pharmacology: Open Access

Author(s): Harding MB, Leithe ME, Mark DB, Nelson CL, Hermiller JB

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Abstract The utility of ergonovine testing for coronary artery spasm was assessed in 3,447 patients with angiographically insignificant (≤ 50% diameter stenosis) or no coronary artery disease. No patients clinically had Prinzmetal's variant angina. Overall, 4% had a positive ergonovine test result, defined by spasm causing ≥ 75% focal stenosis. Complications related to ergonovine use occurred in 11 patients (0.03%). In a training sample of 1,136 patients (studied between 1980 and 1984), two independent predictors of spasm were found by using multivariate analysis: the amount of visible coronary artery disease on the coronary angiogram (p < 0.0001) and a smoking history (p = 0.001). A model to predict spasm based on these variables was validated in a test group of 2,311 patients who received ergonovine from 1985 to 1989. This model allowed the identification of a subset of 480 patients in the validation sample who had a 10% positive test rate compared with a 2% positive test rate in the remaining patients. These results should permit clinicians who use provocative testing in the catheterization laboratory to reserve testing for the subset of this group of patients most likely to have abnormal findings.

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This article was published in J Am CollCardiol and referenced in Cardiovascular Pharmacology: Open Access

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