什么是CVP?由哪几种成分组成? -题库考试答案搜索网

什么是CVP?由哪几种成分组成?

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2022-04-02 13:44

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正确答案

CVP是指胸腔内上、下腔静脉的压力.经皮穿刺监测中心静脉压,主要经颈内静脉或锁骨下静脉,将导管插至上腔静脉.
CVP由四种成分组成:①右心室充盈压;②静脉内壁压力即静脉内血容量;③作用于静脉外壁的压力,即静脉收缩压和张力;④静脉毛细血管压.CVP高低,主要反映右心室前负荷和血容量.与静脉张力和右心功能有关,不能反映左心功能.这是因为三尖瓣和肺动脉瓣对中心静脉血流有阻碍作用,以及肺循环阻力的改变,使来自左心的压力衰减.

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标签：佳木斯大学护理学专升本急危重症护理学平时作业2

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