Exercise-induced ST depression and ST/heart rate index to predict triple-vessel or left main coronary disease: A multicenter analysis

Marco Bobbio, Robert Detrano, Johann Jackob Schmid, Andras Janosi, Alberto Righetti, Matthias Pfisterer, Walter Steinbrunn, Kern H. Guppy, Pierre Abi-Mansour, Jaap W. Deckers, Antonio Colombo, Kenneth G. Lehmann, Harold G. Olson

Research output: Contribution to journalArticle

Abstract

The aim of this investigation was to determine the difference in accuracy between two frequently published nuninvasive indicators of severity of coronary artery disease (exercise-induced ST segment depression and heart rate-adjusted ST depression [ST/HR index]). The study was designed as a survey of consecutive patients undergoing exercise electrocardiography and coronary angiography. There were a total of 2,270 patients without prior myocardial infarction or cardiac valvular disease referred for angiography from eight institutions in three countries; 401 of these patients had triple-vessel or left main coronary artery disease. The sensitivities of ST depression and ST/HR index in detecting triple-vessel or left main coronary artery disease were, respectively, 75% and 78% (p = 0.08) at cut point values where their specificities were equal (64%). This small increase in the accuracy of the ST/HR index was evident only at peak exercise heart rates below the median value of 132 beats/min, where the sensitivities of ST depression and ST/HR index were 73% and 76% (p = 0.03), respectively, at cut point values corresponding to a specificity of 60%. These results were consistent at all eight participating institutions. The increase in accuracy achieved by dividing exercise-induced ST depression by heart rate is small and confined exclusively to a low exercise heart rate. This lack of superiority cannot be generalized to all methods of heart rate adjustment.

Original languageEnglish
Pages (from-to)11-18
Number of pages8
JournalJournal of the American College of Cardiology
Volume19
Issue number1
DOIs
Publication statusPublished - 1992

ASJC Scopus subject areas

  • Nursing(all)

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    Bobbio, M., Detrano, R., Schmid, J. J., Janosi, A., Righetti, A., Pfisterer, M., Steinbrunn, W., Guppy, K. H., Abi-Mansour, P., Deckers, J. W., Colombo, A., Lehmann, K. G., & Olson, H. G. (1992). Exercise-induced ST depression and ST/heart rate index to predict triple-vessel or left main coronary disease: A multicenter analysis. Journal of the American College of Cardiology, 19(1), 11-18. https://doi.org/10.1016/0735-1097(92)90044-N