INCREASED ATRIAL CONTRIBUTION TO VENTRICULAR FILLING IN ISCHEMIC HEART DISEASE : Non-invasive Measurement by ECG-gated Radiocardiography

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  • Increased Atrial Contribution to Ventri

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1. A total of 112 subjects, including 37 controls, 43 hypertensives, 27 IHD and 5 HCM, were tested by routine RCG and ECG gated RCG. 2. The atrial contribution to ventricualar filling (c/b ratio) was measured by ECG-gated RCG and a characteristic increase was found in IHD (37.5±7.7, mean±s.d.) and Hypertensives (26.5±8.0) compared to controls (16.1±5.0). 3. The increase in c/b ratio and the decrease in PDdV/dt in IHD seemed to be caused by primary abnormalities in the relaxation of the ventricle. 4. ECG-gated RCG, being a non-invasive method, serves useful informations in estimating ischemic heart disease especially by a quantitative analysis of the diastolic filling.

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