{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T08:10:33Z","timestamp":1698048633681},"reference-count":23,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2009,2,4]],"date-time":"2009-02-04T00:00:00Z","timestamp":1233705600000},"content-version":"vor","delay-in-days":6793,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Cardiology"],"published-print":{"date-parts":[[1990,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>We investigated whether or not left ventricular function during dynamic exercise in angina\u2010free patients with old myocardial infarction could be estimated using resting left ventricular function and noninvasive parameters determined during exercise. We studied 70 patients with old myocardial infarction by measuring hemodynamic parameters during supine multistage bicycle ergometer exercise. Coronary arteriography and left ventriculography were performed: then the left ventricular ejection fraction and left ventricular end\u2010diastolic volume were measured. The parameteric changes (\u0394) between rest and peak exercise were determined. Significant positive correlations were observed between cardiac index (CI) at rest and at peak exercise (r = 0.62, p &lt; 0.001), as well as between pulmonary artery wedge pressure (PAWP) at rest and at peak exercise (r = 0.72, p &lt; 0.001). Multiple regression analysis indicated that CI and PAWP at peak exercise as dependent variables were best described by the equations: CI at peak exercise = 1.074 [CI<jats:sub>rest<\/jats:sub>] + 0.031 [\u0394HR] + 0.004 [ExD] + 0.018 [LVEF] \u2013 1.560 (r = 0.79, p &lt; 0.001), PAWP at peak exercise=0.994 [PAWP<jats:sub>rest<\/jats:sub>] \u2013 0.181 [LVEF] + 0.203 [\u0394DBP] \u2013 0.076 [\u0394HR] \u2013 21.488 (r = 0.80, p &lt; 0.001). These data suggested that CI and PAWP during dynamic exercise in angina\u2010free patients with old myocardial infarction could be predicted using noninvasive parameters, such as increments of blood pressure and heart rate as well as exercise duration, together with data on resting left ventricular function, such as resting CI, resting PAWP, and resting left ventricular ejection fraction (LVEF).<\/jats:p>","DOI":"10.1002\/clc.4960130710","type":"journal-article","created":{"date-parts":[[2009,2,4]],"date-time":"2009-02-04T21:29:53Z","timestamp":1233782993000},"page":"480-484","source":"Crossref","is-referenced-by-count":0,"title":["Prediction of left ventricular function during supine bicycle ergometer exercise in angina\u2010free patients with old myocardial 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