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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Systemic vascular resistance index (SVRI) and pulmonary vascular resistance index (PVRI) were increased significantly;

外周循环阻力指数、肺循环阻力指数明显增高；

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