视频介绍肺动脉高压，讲解左心疾病、肺脏疾病或低氧血症、肺动脉阻塞引起的肺动脉高压。
Pulmonaryhypertensionreferstohighbloodpressureinthebloodvesselsofthelungs.
Thelungsreceiveoxygen-poorbloodfromtherightsideoftheheart.Afterbeingreoxygenated,oxygen-richbloodreturnstotheleftsideofthehearttobepumpedouttothebody.
Normally,therightventriclepumpsagainstalow-resistancepulmonarycircuit.Increasedbloodpressureinthelungsresultsinagreaterresistance.Therightheartmustworkhardertopushbloodthroughpulmonaryarteries.Thiscausestherightventricletothicken,enlargeandeventuallyfail,aconditionknownasright-sidedheartfailure.
Themost
