+G_z作用下飞行员心血管系统反应特点  

Research on cardiovascular system response of pilots under the effect of +G_z

作　　者：谷志明[1] 吴斌[1] 吴萍[1] 王跃[1] 刘敏[1] 黄伟芬[1] 白延强[1] 

机构地区：[1]中国航天员科研训练中心,北京100094

出　　处：《空军医学杂志》2013年第4期181-184,共4页Medical Journal of Air Force

摘　　要：目的观察16名战斗机飞行员在+4 Gz作用下心血管系统反应的特点,为航天员+4 Gz耐力选拔训练提供参考。方法在人体离心机上对16名男性战斗机飞行员进行+4 Gz,持续30 s检查,并实时监测多种生理指标的变化。结果与试验前比较,16名战斗机飞行员心率(HR)、心水平动脉血压(BP)、心搏出量(SV)、血流阻力(TPR)等均发生了显著性升高(P<0.01),但心输出量(CO)变化不显著;根据HR变化特点,区分出了两种HR反应类型;血氧饱和度明显降低(P<0.01),并在下降段达到最低;脉搏波幅总体上出现降低的趋势,但有两种不同的反应类型,且两种类型的血压反应差异均有统计学意义(P<0.05)。结论 +4 Gz作用下飞行员多项心血管指标发生了显著性变化,且均存在不同特点,在航天员选拔和训练中应关注这些差异。本研究结果可为做好航天员选拔、训练和医学监督与医学保障工作提供试验依据。Object ive We ai med to obser ve the cardiovascular character istics of 16 battle plane pilots under the effect of ＋4 Gz impact and assess the training method of hyper-gravity tolerance. Methods 16 male battle plane pilots did ＋Gz tolerance test by an automatic centrifuge. Their physiological indexes including heart rate（HR）, blood pressure（BP）, stroke volume（SV）,cardiac output（CO）, total peripheral resistance（TPR） and pulse wave（PW） et al were recorded simultaneously during the training. Results Compared with that of pre-test, significant elevation appeared on HR, BP, SV and TPR with the exception of CO（P 0.01）. There were two types of changing HR during platform period. The tendency of Saturation O2 showed obvious decline which arrived at the minimum during the descending period. The amplitude of PW showed the decrease in general in two different types. There appeared significant difference in the changes of BP in the two types. Conclusion Human physiological indexes changed significantly under the effect of ＋4 Gz, which ref lected various cardiovascular responding character istics. The present research is usef ul for ast ronaut selection and medical support.

关 键 词：飞行员 心血管系统 加速度 

分 类 号：R852.21[医药卫生—航空、航天与航海医学]