摘要
肺动脉高压(pulmonary arterial hypertension,PAH)是儿科常见的一种难治性疾病.以肺血管床的进行性狭窄为主要特征,分原发性(IPAH)和继发性PAH。无论是IPAH还是继发性PAH。它们的共同病理生理特点是致病因素造成直接肺血管床的损伤。肺血管收缩和重塑、原位血栓形成和血管内皮损伤是可能的病因,血管内皮细胞功能紊乱导致血管收缩和舒张障碍.上皮细胞一氧化氮(NO)及前列环素(PGI2)的合成下降及内皮素(ET)表达的增加引起肺血管收缩反应增强和血管结构重塑.
出处
《江西医药》
CAS
2007年第9期851-853,共3页
Jiangxi Medical Journal
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