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  • Title: [Effect of left ventricular diastolic dysfunction on pathogenesis of angina decubitus].
    Author: Chen J, Gao R, Yao K.
    Journal: Zhonghua Yi Xue Za Zhi; 2000 Apr; 80(4):258-60. PubMed ID: 11798766.
    Abstract:
    OBJECTIVE: To investigate the effect of left ventricular diastolic dysfunction on the pathogenesis of angina decubitus. METHODS: The study population consisted of three groups: (1) group 1, 31 patients with angina decubitus who had ejection fraction > 50%; (2) group 2, 20 patients with coronary artery disease but without angina decubitus; group 2 and 1 were matched for age, EF and extent of coronary artery disease; (3) group 3, 20 patients without cardiovascular diseases. RESULTS: Left ventriculography (LVG) showed that LV first 1/3 filling fraction (1/3 FF) and LV late 1/3 FF were 0.30 +/- 0.12, 0.41 +/- 0.12, 0.46 +/- 0.07 and 0.36 +/- 0.09, 0.31 +/- 0.08, 0.29 +/- 0.06 in groups 1 to 3 respectively. LV first 1/3 FF was significantly lower in group 1 than in group 2 and 3 (both P < 0.001), but LV late 1/3 FF was much higher in group 1 than in groups 2 and 3 (P < 0.05 and P < 0.01, respectively). Left ventricular end-diastolic pressure (LVEDP) was markedly increased before and after LVG in groups 1 and 2 as compared with group 3 (P < 0.001 and P < 0.05, respectively). The difference of LVEDP caused by left atrial contraction (LACD) was much higher before and after LVG in group 1 than in group 3 (P < 0.01 and P < 0.001, respectively). However, there were significant differences in LVEDP and LACD tested between before and after LVG in group 1 (both P < 0.01). No statistical differences were found in LVEDP and LACD tested between before and after LVG in both group 2 and group 3. CONCLUSION: Patients with angina decubitus have LV diastolic dysfunction, which may be closely related to the pathogenesis of angina decubitus.
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