发病机制( Pathogenesis 1.肺动脉高压( pulmonary artery hypertension)的形成 功能性因素( functional factors) >解剖性因素( anatomy factors) 血容量增多和血液粘滞度增加发病机制（Pathogenesis) 1. 肺动脉高压 (pulmonary artery hypertension)的形成 ➢ 功能性因素(functional factors) ➢ 解剖性因素(anatomy factors) ➢ 血容量增多和血液粘滞度增加