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肺动脉高压(pulmonaryarterialhypertension,PAH)是以肺血管阻力(PVR)进行性增加为临床特征的一组疾病,可导致右心衰竭,引起过早死亡[1-4]。影响肺动脉压力(PAP)的3个因素是PVR、心输出量(CO)和左房压(PLA),三者的关系可用以下公式表示:平均PAP=PVR×CO+PLA任何影响上述因素的
Pulmonary arterial hypertension (PAH), a group of diseases characterized clinically by progressive increases in pulmonary vascular resistance (PVR), can lead to right heart failure and premature death [1-4]. The three factors influencing pulmonary artery pressure (PAP) are PVR, cardiac output (CO), and left atrial pressure (PLA), and the relationship between the three can be expressed as: Average PAP = PVR × CO + PLA Any factors that affect these factors