旋转床模拟推拉效应时心脏泵血功能变化特征

发布时间：2018-04-27 02:23

本文选题：推拉效应 + 旋转床　；参考：《航天医学与医学工程》2007年03期

【摘要】：目的利用旋转床模拟推拉效应(PPE)的方法观察人体心脏泵血功能相关指标的变化,对推拉效应发生的可能机理进行深入探讨。方法8名健康男性被试者,随机在旋转床上进行3次+90°头高位(HUT)30s和头低位(HDT)15s体位转换以模拟推拉效应,其中头低位角度分别为0°、-30°、-90°,测定心率(HR)、基础阻抗(Z0)、每搏量(SV)及心输出量(CO)等生理指标。结果1)随着头低位角度(-Gz值)的增大,Z0在推拉动作“推”阶段和“拉”阶段时降低的程度亦增大;2)随着头低位角度的增大,SV、CO在“推”和“拉”阶段时亦增大;3)随着预先-Gz值的增大,HR在“推”阶段降低的程度越大,“拉”阶段
[Abstract]:Objective To observe the changes of blood function related indexes of human heart pump by the method of rotating bed simulated push effect (PPE), and to explore the possible mechanism of push and pull effect. Methods 8 healthy male subjects were randomly selected to perform 3 +90 degrees head high (HUT) 30s and head low (HDT) 15s position on a rotating bed to simulate the push and pull effect. The head low angle was 0, -30, -90, respectively, the heart rate (HR), the base impedance (Z0), the SV and the cardiac output (CO). Results 1) with the increase of the head low angle (-Gz), the degree of Z0 decreased when the push and pull stage and the "pull" stage were increased; 2) with the increase of the head low angle, SV, CO in " In the stage of "push" and "pull", it also increases; 3) with the increase of the pre -Gz value, the greater the degree of HR reduction in the "push" stage, the "pull" stage.

【作者单位】：第四军医大学航空航天医学系航空航天生物动力学教研室第四军医大学航空航天医学系航空航天生物动力学教研室第四军医大学航空航天医学系航空航天生物动力学教研室第四军医大学航空航天医学系航空航天生物动力学教研室第四军医大学航空航天医学系航空航天生物动力学教研室第四军医大学航空航天医学系航空航天生物动力学教研室
【基金】：军队杰出人才基金资助项目(04J012)
【分类号】：R852.21

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