It is relatively independent of loading condition.Especially in pseudonormal pattern it has important value in identification,particularly when pulmonary venous flow cannot be detected successfully.

 
  • 結論:二尖瓣環(huán)e/a比率反映的是組織結構運動(dòng)的變化,具有相對不依賴(lài)血流負荷的影響,在二尖瓣血流頻譜假性正?;瘯r(shí),具有重要的鑒別價(jià)值;
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