Why the study?
Does ECG-gated radiocardiography detect differences in atrial contribution to ventricular filling between patients with ischemic heart disease, hypertension, and healthy controls?
Does ECG-gated radiocardiography detect differences in atrial contribution to ventricular filling between patients with ischemic heart disease, hypertension, and healthy controls?
ECG-gated radiocardiography can non-invasively detect increased atrial contribution to ventricular filling in patients with ischemic heart disease and hypertension, reflecting impaired ventricular relaxation.
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May support non-invasive diastolic assessment via ECG-gated radiocardiography in IHD and hypertension; hypothesis-generating, requires prospective validation.
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 non-invasive method, serves useful informations in estimating ischemic heart disease especially by a quantitative analysis of the diastolic filling.
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Tsunetaro Sakurai (1977) studied this question.
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