350m氦氧模拟饱和潜水过程中潜水员坐位踏车时心缩间期的变化  

THE CHANGES OF STIs DURING SITTING ERGOMETRY IN A SIMULATED 350m He-O_2 SATURATION DIVE

作　　者：卢海[1] 潘明达[1] 王少杰[1] 侯晓玲[1] 俞正茂[1] 

机构地区：[1]海军医学研究所,上海200433

出　　处：《中国应用生理学杂志》1991年第4期307-310,共4页Chinese Journal of Applied Physiology

摘　　要：在350m氦氧模拟饱和潜水过程中,对4名男性潜水员采用耳密度图导数图方法观察坐位踏车时心缩间期变化。在压力(300、230、135m)下和减压后的主要变化是等容收缩期、射血前期(PEP)和PEP/左室射血时间加大,与加压前比较有显著差异,尤其在踏车负荷加重时更为明显。提示心肌收缩力受高气压的影响而降低。The results of the changes of STIs measured by ear densitography in 4 male divers(aged 20-22 years) during sitting ergometry in a simulated 350m He-O2 saturation dive experiment were pres-ented.The main changes under various pressure (300, 230 and 135m) and after decompression were increment of ICT, PEP and PEP / LVET ratio, which were found to be significantly different from the control values before compression. It is considered that these changes could denote an attenuated myocardial contractility due to the influence of this specific hyperbaric experimental condition.

关 键 词：心缩间期 饱和潜水 踏车运动 

分 类 号：R842[医药卫生—航空、航天与航海医学]