目的：研究直立倾斜试验(HUT)诊断血管迷走性晕厥(VS)，观察美托洛尔治疗VS的疗效。

Objective: to study head-up tilt test (HUT) in the diagnosis of vasovagal syncope (VS) and to evaluate therapeutic effect of metoprolol treating VS.

youdao

目的：研究直立倾斜试验(HUT)诊断血管迷走性晕厥(VS)，观察美托洛尔治疗VS的疗效。

Objective: to study head-up tilt test (HUT) in the diagnosis of vasovagal syncope (VS) and to evaluate therapeutic effect of metoprolol treating VS.

youdao