Left ventricular diastolic performance at rest and during exercise in patients with coronary artery disease. Assessment with first-pass radionuclide angiography
| Autor: | W. J. Wickemeyer, J. W. Reid, Miguel A. Quinones, L. A. Del Ventura, Richard R. Miller, James B. Young, Lawrence A. Reduto, Donald H. Glaeser |
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| Rok vydání: | 1981 |
| Předmět: |
Adult
Male medicine.medical_specialty Heart Ventricles Rest Ischemia Diastole Coronary Disease Coronary artery disease Electrocardiography Radionuclide angiography Heart Rate Stress Physiological Physiology (medical) Internal medicine medicine Humans In patient Radionuclide Imaging Rest (music) Ejection fraction medicine.diagnostic_test business.industry Middle Aged medicine.disease Myocardial Contraction Propranolol Exercise Test Cardiology Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | Circulation. 63:1228-1237 |
| ISSN: | 1524-4539 0009-7322 |
| DOI: | 10.1161/01.cir.63.6.1228 |
| Popis: | We used first-pass radionuclide angiocardiography to assess filling fraction during the first third of diastole, peak filling rate and peak filling rate during the first third of diastole as indexes of left ventricular diastolic performance at rest and after upright bicycle exercise in 32 normal patients and 68 patients with coronary artery disease. The mean filling fraction was unchanged from rest to exercise in normal patients (47+/- 15% vs 46 +/- 13%; NS). Even in 49 coronary patients with normal (greater than or equal to 50%) ejection fraction at rest, filling fraction was less than that in normal patients at rest (35 +/- 11% vs 47 +/- 15%, p less than 0.001). Despite similar resting heart rates, patients with coronary disease had lower (p less than 0.001) peak filling rate and peak filling rate during the first third of diastole than normal patients. With exercise, filling fraction decreased (p less than 0.001) from the resting value in coronary patients. These data suggest that (1) indexes of diastolic performance can be noninvasively assessed at rest and during exercise using first-pass radionuclide angiocardiography, (2) abnormalities in early diastolic performance are often present at rest in patients with coronary artery disease despite normal systolic performance, and (3) exercise-induced ischemia results in increased early diastolic dysfunction in patients with coronary disease. |
| Databáze: | OpenAIRE |
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