Objective To investigate heart rate and blood pressure response to head-up tilt table test ( TTT ) in patients with cardioinhibitory and vasodepressor syncope diagnosed by the first head-up tilt table test .

目的观察首次直立倾斜试验阳性，并 依据 血流 动力学 特征表现为心脏抑制型和血管 减压型 晕厥患者进行直立倾斜试验 时血压和心率的反应。