概述
肺动脉瓣疾病指位于您心脏右下心腔(右心室)和将血液输送到肺部的动脉(肺动脉)之间的肺动脉瓣无法正常工作的疾病。这种疾病会中断心脏到肺部的血液流动。
肺动脉瓣像一扇从心脏右心室到肺部的单向门。血液通过肺动脉瓣从右心室流向肺动脉,然后进入肺部,在肺中吸收氧气输送到全身。
肺动脉瓣疾病的类型包括:
- 肺动脉瓣狭窄。肺动脉瓣狭窄会减少从心脏到肺动脉和肺部的血液流动。
- 肺动脉瓣返流。肺动脉瓣的瓣膜(小叶)关闭不严,导致血液向后漏入右心室。
- 肺动脉闭锁。该疾病为先天性。未形成肺动脉瓣。相反,一块实心组织块阻断了心脏右侧的血液流动,因此血液无法进入肺部吸收氧气。
许多类型的肺动脉瓣疾病由出生时即患有的心脏病(先天性心脏缺陷)引起。治疗方法取决于肺动脉瓣疾病的类型和严重程度。
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