摘要
用耳夹式动脉血氧饱和度测定仪和阻执法(impedance cardiogram),观察了16岁～25岁的23名青年战士,在模拟高原环境持续生活72h内(受试者在低压舱内于模拟4 000m高原生活48h,然后继续在模拟5000m高原生活24h)动脉血氧饱和度(SaO_2)和心脏指数(CI)的变化。自到达模拟4000m高原立即至在模拟5000m高原停留24h末(即在模拟高原环境生活72h末),其SaO_2和CI随着海拔高度的增加和持续时间的延长而降低,于模拟5000m高原第24h末,两者下降至本试验的最低值;提示心脏功能受到一定程度的抑制。于返回平原的第4h末,SaO_2虽已恢复正常,但CI仍然偏低,与平原对照值相比,具有显著差异(P<0.05),表明此种模拟高原的急性缺氧对心脏泵血功能的影响未完全恢复。
The changes of oxygen saturation (SaO_2) and cardiac index (CI) of 23 soldiers who had stayed in a simulated high altitude of 4 000m and 5 000m for 72 hours were observed with a Model 102 BIT BIOX IIA earprobe oximetry and impedance cardiogram. It was found that both SaO2 and CI decreased because of hypoxia, and the decrease became more severe with the elevation of the altitude and the prolongation of staying. At the end of the 24th hour of staying, the 2 parameters reached the lowest. These facts suggest that hypoxia more or less depresses the cardiac function. Four hours after the subjects returned to sea level, SaO2 restored the normal value but CI remained significantly lower than the control valuet which implies that the effects of acute hypoxia still existed at that time.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
1991年第2期146-148,共3页
Journal of Third Military Medical University
关键词
缺氧症
高原
动脉血氧
饱和度
心脏
anoxia/PP
arterial oxygen saturattoni cardiac index
