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目的:应用脉冲组织多普勒显像技术评价充血性心力衰竭(CHF)患者的右室舒张功能。方法:应用脉冲多普勒测量35例心功能(NYHA)Ⅲ~Ⅳ级CHF患者(CHF组)和40例健康人(对照组)舒张早期三尖瓣血流峰值速度(E),舒张晚期峰值速度(A),并计算E/A;应用脉冲组织多普勒测量三尖瓣隔叶及前叶瓣环处舒张早期峰值速度(Em)、舒张晚期峰值速度(Am),Em/Am,等容舒张时间及E/Em值;并对2种检测方法和各组测值进行比较。结果:CHF组Em/Am均<1,Em降低,等容舒张时间较对照组明显延长(P<0.01),E/Em增高,对照组Em/Am>1;CHF组的A及Am均高于对照组(P<0.05)。结论:组织多普勒显像能够反映CHF患者右室舒张功能的变化。
Objective: To evaluate the right ventricular diastolic function in patients with congestive heart failure (CHF) by pulsed tissue Doppler imaging. Methods: Pulmonary function tests were performed in 35 patients with NYHA class Ⅲ ~ Ⅳ CHF and 40 healthy controls (control group) (A), and calculate E / A. Pulsed Tissue Doppler was used to measure the early diastolic peak velocity (Em), late diastolic peak velocity (Am), Em / Am, etc. Volume of relaxation time and E / Em value; and two kinds of test methods and the measured values of each group were compared. Results: Em / Am in CHF group was lower than 1, Em decreased, and isovolumic relaxation time was prolonged significantly (P <0.01), E / Em increased, Em / Am> 1 in control group; In the control group (P <0.05). Conclusion: Tissue Doppler imaging can reflect the changes of right ventricular diastolic function in patients with CHF.