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首页> 外文期刊>Korean Circulation Journal >Effect of Vigorous Preload Reduction on Mitral Annulus Velocity in Chronic Renal Failure
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Effect of Vigorous Preload Reduction on Mitral Annulus Velocity in Chronic Renal Failure

机译：积极减少预负荷对慢性肾功能衰竭二尖瓣环速度的影响

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Background and Objectives The pulsed wave Doppler echocardiography in the mitral inflow is used widely for the assessment of LV diastolic function. The echocardiographic index of LV diastolic function is known to be affected by several factors, such as the loading condition. In the Doppler tissue image (DTI), the mitral annulus velocity is known to be unaffected by the loading condition. The purpose of this study was to investigate the effect of the preload reduction on the mitral annulus velocity. Subjects and Methods We examined the transmitral and pulmonary venous flows, and the mitral annulus velocity in 30 patients with chronic renal failure, but a normal LV systolic function, by echocardiography, both before and after hemodialysis. The study patients were divided into two groups; Group I (preload reduction 2.0 kg, N=20). Results In the transmitral flow; the E velocity was changed, both before and after hemodialysis, in Group II. Conclusion These results suggested that a vigorous preload reduction might change the echocardiographic indices, and either the transmitral flow pattern or the mitral septal annulus velocity. The mitral lateral annulus velocity indices, which are useful for the evaluation of the LV diastolic function, were unchanged by the preload reduction. The preload condition needs to be accounted for when evaluating the LV diastolic function with a Doppler echocardiography.
机译：背景与目的二尖瓣血流的脉冲多普勒超声心动图被广泛用于评估左室舒张功能。已知左室舒张功能的超声心动图指数受多种因素影响，例如负荷情况。在多普勒组织图像（DTI）中，已知二尖瓣环速度不受加载条件的影响。这项研究的目的是研究减少预负荷对二尖瓣环速度的影响。研究对象和方法我们通过超声心动图检查了血液透析前后的30例慢性肾功能衰竭但LV收缩功能正常的慢性肾功能衰竭患者的透射和肺静脉血流量以及二尖瓣环速度。研究患者分为两组。第一组（减少预载2.0千克，N = 20）。结果传递流;在第二组中，血液透析前后，E速度均发生了变化。结论这些结果表明，大幅度降低预紧力可能会改变超声心动图的指标，以及改变透射血流模式或二尖瓣间隔环的速度。可用于评估LV舒张功能的二尖瓣外侧环速度指数在预紧力降低时没有改变。当用多普勒超声心动图评估左室舒张功能时，需要考虑预紧情况。

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