结论上腔静脉流速曲线中心室收缩波和心房收缩反向波速度在评价容量反应性中有一定应用价值。

Conclusions the peak velocities of wave s and wave ar are of good value in assessing the fluid responsiveness.

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结果表明，应用波生坦后，尽管收缩期和舒张期血压没有变化，收缩末期和舒张期心室体积比例明显升高。

Peak systolic and diastolic strain rates also increased significantly after bosentan treatment, the results indicate, although systolic and diastolic blood pressures were not affected.

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