中心静脉压的波形呈现a、c、u三个正向波和x、y两个负向波。a波代表A.为心房收缩所致B.为心室收缩开始时三尖瓣突向心房所致C.为心房舒张,是三尖...

作者: rantiku 人气: - 评论: 0
问题 中心静脉压的波形呈现a、c、u三个正向波和x、y两个负向波。a波代表
选项 A.为心房收缩所致 B.为心室收缩开始时三尖瓣突向心房所致 C.为心房舒张,是三尖瓣未开时血汇集于右心房和腔静脉所致 D.为三尖瓣开放所致
答案 A
解析

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