Objective To assess the accuracy of Doppler audio-signal processing system(DASPS) in noninvasive automatic estimation of pulmonary vascular resistance (PVR).
目的评价多普勒超声音频处理系统（DASPS）自动定量估测肺血管阻力（PVR ）的准确性。
Whereas mean pulmonary artery pressure (MPAP) and pulmonary vascular resistance (PVR) were significantly higher compared with the control group.
平均肺动脉压（MPAP）、肺血管阻力（PVR）均高于对照组；
Pulmonary artery hypertension (PAH) is a combination of factors caused abnormal pulmonary hemodynamics. Pulmonary vascular resistance (PVR) progressive as clinical features of PAH.
肺动脉高压(PAH)是多种因素引起的肺血流动力学异常，以肺血管阻力进行性升高为临床特征的一组疾病。
Total pulmonary resistance(TPR), pulmonary vascular resistance(PVR)and systemic vascular resistance(SVR) were increased after injected NOS inhibitor(P<0.05).
在注入NOS抑制剂后总肺循环阻力、肺动脉阻力、体循环血管阻力均明显上升（P< 0 .0 5 ）。
Total pulmonary resistance(TPR), pulmonary vascular resistance(PVR)and systemic vascular resistance(SVR) were increased after injected NOS inhibitor(P<0.05).
在注入NOS抑制剂后总肺循环阻力、肺动脉阻力、体循环血管阻力均明显上升（P< 0 .0 5 ）。
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