Moya i Mitjans A, Permanyer-Miralda G, Sagristà Sauleda J, Rius Gelabert T
Unidad de Arritmias, Hospital General Universitari Vall d'Hebron, Barcelona.
Rev Esp Cardiol. 1997 Jun;50(6):368-73.
Head-Up tilt test (HUT) permits the identification of vasovagal syncope in patients with syncope of unknown origin. Several authors have pointed out its usefulness for the therapeutic management of these patients. However, even though it has limitations, this paper discusses those situations in which HUT may be useful. First, as HUT permits the recognition of the etiologic diagnosis of syncope, it may be helpful in the evaluation of its treatment. On the other hand, the characterization of different components of vasovagal reaction, cardioinhibition and/or vasodepressor response, may be helpful in the selection of therapeutic options. It has been suggested that the performance of HUT may even be beneficial for the relapses of vasovagal syncope in patients with recurrent syncope and refractory to other treatments. Finally, further randomized clinical trials in HUT will help to establish the prediction of therapeutic effectiveness in patients with vasovagal syncope. However, there are important limitations to its usefulness for the clinical management of individual patients.
头高位倾斜试验（HUT）可用于识别不明原因晕厥患者的血管迷走性晕厥。几位作者指出了其在这些患者治疗管理中的有用性。然而，尽管它有局限性，但本文讨论了HUT可能有用的情况。首先，由于HUT可识别晕厥的病因诊断，它可能有助于评估其治疗。另一方面，血管迷走反应不同成分（心脏抑制和/或血管减压反应）的特征，可能有助于治疗方案的选择。有人提出，对于复发性晕厥且对其他治疗无效的患者，进行HUT甚至可能对血管迷走性晕厥的复发有益。最后，关于HUT的进一步随机临床试验将有助于确定血管迷走性晕厥患者治疗效果的预测。然而，其在个体患者临床管理中的有用性存在重要局限性。
