Hachul D, Sosa E A, Consolim F, Magalhães L, Scanavacca M, Martinelli M, Bellotti G, Pileggi F
Instituto do Coração do Hospital das Clínicas-FMUSP, São Paulo.
Arq Bras Cardiol. 1994 May;62(5):297-9.
In order to identify the reproducibility of head-up tilt test, a second test one week later in 22 patients with a positive first test, was performed.
The test was performed in a fasting state during the morning. The heart rate and blood pressure were monitored during 20 minutes in the supine position and then at 60 degrees for up to 40 minutes. The test were considered positive if the patient experienced syncope or pre-syncope with fall in systolic blood pressure > 30mmHg. The following aspects were evaluated: reproducibility of the positive response; the type of response (hypotension, asystole or hypotension plus bradycardia) and the time interval between tilt and the beginning of symptoms.
Eighteen (82%) patients had a second positive response; 14 (77.8%) of then had the same type of response; and 17 (94%) had syncope in similar time interval after tilt.
The head-up tilt testing has good reproducibility, although its use in the therapeutic management needs a longer period of evaluation.
为了确定头高位倾斜试验的可重复性，对22例首次试验呈阳性的患者在一周后进行了第二次试验。
试验于上午空腹状态下进行。在仰卧位20分钟期间以及随后60度倾斜长达40分钟期间监测心率和血压。如果患者出现晕厥或先兆晕厥且收缩压下降>30mmHg，则试验被视为阳性。评估了以下方面：阳性反应的可重复性；反应类型（低血压、心搏停止或低血压加心动过缓）以及倾斜与症状开始之间的时间间隔。
18例（82%）患者第二次试验呈阳性反应；其中14例（77.8%）反应类型相同；17例（94%）在倾斜后相似的时间间隔内出现晕厥。
头高位倾斜试验具有良好的可重复性，尽管其在治疗管理中的应用需要更长时间的评估。
