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首页> 外文会议>55th International Astronautical Congress 2004 vol.3 >INVESTIGATION OF HAEMODYNAMICS IN PARABOLIC FLIGHT
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INVESTIGATION OF HAEMODYNAMICS IN PARABOLIC FLIGHT

机译：抛物线飞行中的血流动力学研究

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Exposure to acute variations in gravity induces haemodynamic alterations in the human cardiovascular system, due to changing hydrostatic pressure gradients. This experiment aims to add to current knowledge on the contribution of venous blood flow from the lower limbs to central blood volume, during entry into micro-gravity, and on re-exposure to hyper- and normal gravity conditions. The pilot experiment took place during the European Space Agency Student Parabolic Flight Campaign, in July 2004. Simultaneous measurements of lower limb venous flow volume, cardiac output and heart rate were performed using strain-gauge plethysmography, duplex Doppler ultrasonography and non-invasive inert gas rebreathing (a new combination of experimental techniques). Data were collected from 4 test subjects, during 2 flights of 30 parabolas. The pilot flight highlighted many areas for improvement in the study design. The project is ongoing, with continuing analysis of the data and comparative studies into venous flow volume patterns in patients with vascular insufficiency; combining resources for space and clinical medical research.
机译：由于静水压力梯度的变化，暴露于重力的剧烈变化会导致人体心血管系统发生血流动力学改变。该实验旨在增加关于下肢静脉血对中央血液量的贡献，进入微重力过程中的暴露以及重新暴露于超重力和正常重力条件下的最新知识。在2004年7月的欧洲航天局学生抛物线飞行运动中进行了试验性实验。使用应变片体积描记法，双工多普勒超声和无创惰性气体对下肢静脉血流量，心输出量和心率进行了同时测量。重新呼吸（实验技术的新组合）。在30次抛物线的2次飞行中，从4位测试对象中收集了数据。飞行员飞行着重指出了研究设计中有待改进的地方。该项目正在进行中，正在继续分析数据并进行比较研究，以研究血管功能不全患者的静脉血流模式；结合空间和临床医学研究资源。

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