多普勒超声心动图评价左室舒张功能的方法比较

Comparison in detecting methods for left ventricular diastolic function by doppler echocardiography

目的 :通过比较二尖瓣血流图结合肺静脉血流频谱法与彩色 M型超声心动图基线移动法 ,探讨更加准确、简便的左室舒张功能评价手段。方法 :将 74例冠心病患者按左室射血分数和 E/ A分为 A(EF>5 0 % ,E/ A<1)、B(EF>5 0 % ,E/ A≥ 1)、C(EF≤ 5 0 % )三组 ,比较它们及正常对照组 (2 2例 )的 S波、FVTIs、ARV、ARD/ AD、RFP及 RFP/ E。结果 :冠心病组三个亚组的 S波、FVTIs、ARV、ARD/ AD、RFP及 RFP/ E与对照组相比差异都有显著性 ;B、C两组上述指标与 A组差异都有显著性 ;B组和 C组间差异无显著性。结论 :两种方法都能鉴别二尖瓣血流频谱的伪正常和评价左室舒张功能 ,但彩色 M型超声心动图基线移动法更加准确。

Objective:To seek for a more exact and convenient way of detecting left ventricular diastolic function by a comparative study of pulmonary vein flow graph with mitral valve flow graph with in baseline shift technique color m mode echocardiography .Methods:74 patients with coranary artery disease were classified by E/A ratio and LVEF as Group A(EF>50% and E/A<1), Group B(EF>50% and E/A≥1) and Group C(EF≤50%) while 22 healthy persons were treated as control group. E wave, A wave, A/E ratio, DT, IVRT, RFP, RFP/E, S wave, D wave, Vs/Vd, FVTIs, ARV and ARD/AD wave were detected in everyone.Results:The value of S wavepeak velocity, FVTIs, ARV, ARD/AD, RFP, RFP/E were significantly different between control group and other three groups with coranary artere disease as well as between Group A and Group B or Group A and Group C (all P<0.01). There was no difference between Group B and Group C (P>0.05).Conclusion:Both methods are capable of distinguishing pseudonormalized transmitral flow pattern and evaluating precisely the left ventricular diastolic function.