组织多普勒成像与脉冲多普勒对高血压患者左室舒张功能评价的比较研究
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[摘 要] 目的：应用组织多普勒成像技术(DTI)评价高血压左室肥厚及高血压无左室肥厚患者左室舒张功能，并与脉冲多普勒(PW)技术检测二尖瓣口血流频谱参数进行比较。方法：将研究对象分五组，30例正常对照组，高血压无左室肥厚及高血压左室肥厚患者各35例，先用PW测量二尖瓣口血流频谱E、A，计算E/A，高血压无左室肥厚及高血压左室肥厚患者中E/A<1，E/A>1各分为一组，再应用多普勒组织成像技术测定各组二尖瓣环舒张期运动速度Ea、Aa，计算Ea/Aa，并对2种检测方法和各组测值进行比较。结果：高血压组无论E>A或E1; groupⅣ, hypertensive patients without LVP, E/A>1; thirty normal controls. Mitral valve peak flow velocity in left ventricle diastole rate by DTI, mitral annulus movement velocity in diastole of each group Ea/ Aa ratio by Doppler tissue imaging were measured. Results: Ea/ Aa in hypertensive patients in all four groups were less than 1 and distinctively lower than normal controls. Conclusions: In comparison with mitral flow velocity spectrum by PW mitral annulus movement velocity in diastole by DTI tended to be more accurate in evaluating left ventricular diastolic function ......
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