肺心病基本病理生理改变特点是肺血管痉挛、肺循环阻力增高，以及红细胞增多、血液黏稠度增加、血小板聚集等。

The physiopathology characteristic of pulmonary heart disease is that the vessels of the lungs are tic, resistance of pulmonary circulation is increased, the blood platelet is gathered, et al.

目的研究安定-芬太尼-羟丁酸钠复合诱导对不同程度肺动脉高压心脏瓣膜手术病人体、肺循环血液动力学的影响。

Objective To study the effects of co induction with diazepam fentanyl sodium hydroxybutyrate on systemic and pulmonary hemodynamics in patients with cardiac valve disease and pulmonary hypertension.