三步法直立倾斜试验诊断不明原因晕厥89例临床分析

目的：探讨三步法直立倾斜试验（HUT）诊断血管迷走性晕厥（VVS）的可行性。方法：对临床不明原因晕厥的89例患者行HUT，试验分3个步骤，即基础倾斜试验（BHuT）、舌下含服硝酸甘油倾斜试验（SNHUT）、异丙肾上腺素倾斜试验（IHUT）。结果：89例患者中HUT阳性61例，阳性率为68．54％，其中基础直立倾斜试验阳性13例（14．61％），舌下含服硝酸甘油阳性44例（57．89％），含服硝酸甘油阴性的11例中静点异丙肾上腺素阳性4例（36．36％）。结论：三步法直立倾斜试验是诊断血管迷走性晕厥的可行方法。该方法可靠简便，可提高阳性率。

The analysis of hand-up tilt-induced test in diagnosis of 89 patients with unexplained syncope

Objective: The result of 89 patients with unexplained syncope in the diagnosis of hand-up tilt-induced test was summarized. Method: Hand-up tilt-induced test was carried out in 89 patients with unexplained syncope. First step: baseline hand-up tilt-induced testing. Second step: sublingual nitroglycerin hand-up tilt-induced testing. Third step: Isoproterenol hand-up tilt-induced testing. Result: Sixty-one patients had positive response in 89 patients. Positive rate was 68.53%, 13 patients was positive response in baseline hand-up tilt-induced testing. 44 patients was positive response in sublingual nitroglycerin hand-up tilt-induced testing and 4 patients in 11 patients with negative response in sublingual nitroglycerin hand-up tilt testing had positive response in isoproerenol hand-up tilt testing. Conclusion: Hand-up tilt testing is reliaole to diagnose vasovagal syncope and simple. It can raise positive rate.