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了解法洛四联症

ID: ANH19225chis
医学动画文字记录:法洛四联症是一种先天性缺陷,它会改变婴儿心脏的正常血流。健康的心脏有四个腔室,右心房和右心室,左心房和左心室。将氧气输送到身体后,缺氧的血液流入右心房。当右心房收缩时,它将血液输送到舒张的右心室。然后右心室收缩,将血液通过肺动脉输送到肺部。血液在肺部吸收氧气,然后返回左心房。左心房收缩,使舒张的左心室充血。左心室收缩,通过主动脉泵送富含氧气的血液到身体。法洛四联症是一种先天缺陷,由心脏和血管的四种缺陷组成。室间隔缺损(VSD)是指两个心室之间的壁上有一个孔。这个孔可以让富氧的血液和低氧的血液混合。重叠主动脉意味着主动脉在心脏上的正常位置发生轻微偏移。它位于室间隔缺损的正上方。这使得两个心室的血液可以通过主动脉。因此,一些缺氧的血液可能会流向身体。肺狭窄是指肺动脉主动脉狭窄,肺瓣膜不能完全打开。由于血管变窄,到达肺部的血液减少。右心室肥厚是指右心室壁比正常情况更厚。这被认为是血液流经室间隔缺损的反应,心脏必须更努力地将血液泵入狭窄的肺动脉,从而导致血压升高。这四个缺陷共同影响,可能会阻止足够的氧气到达婴儿的身体。这会导致一种叫做“发绀”的症状,或婴儿全身呈现蓝色。在这种情况下,婴儿的皮肤,嘴唇和指甲会有蓝色的色调。要了解更多关于法洛四联症的信息,请咨询医生。

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