The study of left ventricular diastolic function with echocardiography and coronary angiography
- VernacularTitle:超声与心导管法对比研究冠心病左室舒张功能
- Author:
Yihong REN
;
Jing LU
;
Guang ZHI
- Publication Type:Journal Article
- From:
Chinese Journal of Ultrasonography
2001;10(1):19-21
- CountryChina
- Language:Chinese
-
Abstract:
Objective To examine the left ventricular diastolic function of patients with coronary artery diseases by noninvasive echocardiography and invasive coronary angiography.Methods Mitral and pulmonary venous Doppler signals were recorded by the continuous wave Doppler technique in 62 patients, both coronary angiography and left ventricle pressure were measured. Patients were divided into normal and abnormal groups based on coronary angiography.Results Left ventricular end diastolic pressure (LVEDP) (17.6 mm Hg vs 13.2 mm Hg,P<0.05),the left ventricular negative Δp/Δt before atria contraction ［-(224.63±52.18),-(87.81±24.41),P<0.05］,and the elevated value of left ventricular pressure derived from atria contraction ［(6.66±0.92)mm Hg vs (0.96±1.87)mm Hg,P=0.0094］ in abnormal group were more than those in the normal. The ratio of slope in pulmonary vein and mitral A wave peak was less in normal group than that in the abnormal (5.10±0.31 vs 4.12±0.20,P＝0.0106). But the isovolume relaxation parameters had no differences between the two groups.Conclusions Coronary arter ischemia is an important cause of left ventricular impaired relaxation aggravation and stiffness, the diastolic abnormalities existed in the whole diastolic duration. Except ischemia, other factors also could cause relaxation disfuction and even elevate the LVEDP.
