Clinical features and hemodynamic parameters of patients.

Values are expressed as mean ± standard deviation; F: female, M: male; mPaP: mean pulmonary artery pressure; sPaP: systolic pulmonary artery pressure; PVR: pulmonary vascular resistence; CI: cardiac index; 6MWT: 6 minute walking test; IPAH: idiopathic pulmonary arterial hypertension; APAH: associated pulmonary arterial hypertension.数据以均值±标准差的形式表示；F代表女性（female），M代表男性（male）；mPaP：平均肺动脉压（mean pulmonary artery pressure）；sPaP：收缩期肺动脉压（systolic pulmonary artery pressure）；PVR：肺血管阻力（pulmonary vascular resistance）；CI：心脏指数（cardiac index）；6MWT：6分钟步行试验（6 minute walking test）；IPAH：特发性肺动脉高压（idiopathic pulmonary arterial hypertension）；APAH：相关性肺动脉高压（associated pulmonary arterial hypertension）。