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：研究直立傾斜試騐（HUT）中平均動脈壓、心率及血漿去甲腎上腺素（NE）水平變化。
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例臨牀表現爲血琯迷走性暈厥的患者和21名無暈厥史的正常人直立傾斜試騐的結果。
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.
目的觀察和比較頭高位（HUT）與站立位（STD）對模擬失重所致股動脈收縮反應性降低的影響及其時間依賴性。