Pulmonary artery hypertension is a serious disease in respiratory system and a key tache in the mechanism of pulmonary-heart disease. The pathological changes include the contraction and remodeling of the pulmonary vessels. There are more and more studies on the pulmonary artery hypertension because of its refractory character and the following increasing mortality. This article summarizes the updating research of the factors and mechanism studied on pulmonary artery hypertension recently,to provide a new view for the clinical and basic medical investigation.
