Mitral insufficient grades were determined by the effective regurgitant orifice area measured with spectral Doppler.

二尖瓣关闭不全程度用频谱多普勒测定的有效返流口面积确定。

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Mitral insufficient grades were determined by the effective regurgitant orifice area measured with spectral Doppler.

二尖瓣关闭不全程度用频谱多普勒测定的有效返流口面积确定。

youdao