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一、二尖瓣狭窄临床表现根据不同阶段可分为三期: 1.代偿期尚无明显的血液动力学改变,病人只有二尖瓣狭窄的体征,而无明显的自觉症状,体力活动不受限制。 2.左心房衰竭期由于二尖瓣狭窄较重,心脏在舒张期时,左心房血液流注到左心室受到障碍,于是左心房压力增高,这样左心房就扩张和肥大。随着左心房压力的增高,肺静脉和肺毛细血管压力亦增高。肺静脉和毛细血管就产生了扩张和郁血,形成慢性肺脏充血。
First, the clinical manifestations of mitral stenosis according to different stages can be divided into three phases: 1. There is no significant hemodynamic changes in compensatory phase, the patient has only mitral stenosis signs, and no obvious symptoms, physical activity is not Restricted. Left atrial failure, due to severe mitral stenosis, the heart during diastole, left atrial blood flow to the left ventricular dysfunction, so the left atrial pressure, so that the left atrium to dilate and hypertrophy. With the increase of left atrial pressure, pulmonary vein and pulmonary capillary pressure also increased. Pulmonary veins and capillaries produce expansion and bloody, resulting in chronic lung congestion.