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用Doppler超声测量左房减压时间可定量估计二尖瓣口面积(MVA),有助于观察二尖瓣狭窄病变的进展和选择最佳手术时机.但所用标准方法计算较为复杂.本文提出一种新方法,根据经二尖瓣口流速曲线推算MVA,不仅改善了准确性,且计算简单快速.方法:10例拟诊二尖瓣狭窄的患者(33～69岁),在心导管术前24小时内接受脉冲式Doppler检查.这些患者均有两维超声心动图(2DE)风湿性二尖瓣病变证据,按心导管法计算的MVA为0.7～2.2cm~2.每例患者的经二尖瓣Doppler流速曲线的条图记录复制20份,供10人(其中,Doppler专家、工作3年及1年的心脏科医师、超声心动图技
Doppler ultrasound measurement of left atrial decompression time can be quantitatively estimated mitral valve area (MVA), is helpful to observe the progress of mitral stenosis and select the best timing of surgery, but the standard method used is more complicated.This paper presents a The new method, based on MVA estimated by mitral flow velocity curve, not only improves the accuracy, but also can be calculated quickly and easily.Methods: Ten patients with suspected mitral stenosis (33-69 years old) Hour pulse Doppler examination.These patients have evidence of two-dimensional echocardiography (2DE) rheumatic mitral valve disease, according to the catheterization MVA calculated as 0.7 ~ 2.2cm ~ 2. Each patient by the tip Doppler flow rate curve of the stripe record of 20 copies, for 10 people (including Doppler experts, working for 3 years and 1 year of cardiologists, echocardiography