head up tilt

基本解释

Objective:To study the changes of mean arterial pressure(MAP), heart rate(HR)and plasma norepinephrine(NE)level during head up tilt test(HUT).
目的：研究直立倾斜试验（HUT）中平均动脉压、心率及血浆去甲肾上腺素（NE）水平变化。
Methods:To analyze the data of head up tilt test(HUT) of 100 patients with symptoms of vasovagal syncope clinically and 21 normal controls with no history of syncope.
方法：分析100例临床表现为血管迷走性晕厥的患者和21名无晕厥史的正常人直立倾斜试验的结果。
AIM To examine and compare influence and time dependence of head up tilt (HUT) or standing (STD) on decline of contraction responses of rat femoral artery caused by simulated weightlessness.
目的观察和比较头高位（HUT）与站立位（STD）对模拟失重所致股动脉收缩反应性降低的影响及其时间依赖性。