以下为句子列表：
英文: A clinical history may, however, be the most suggestive entity for a repeat episode, and the “standard” diagnosis of vasovagal syncope usually involves a clinical history and observation, if possible, of the patient at the time of the symptoms (2).
中文: 然而，临床病史对晕厥的再次发生是最有意义的，同时血管迷走神经性晕厥诊断的金标准常包括临床病史和观测（如果可能对患者发作时的观察）[2]。
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英文: Patients with a clinical history of vasovagal syncope have been reported to have a positive tilt testing result in 30-85% of cases (2).
中文: 对于有血管迷走性晕厥临床病史的病人，据报道倾斜试验的阳性率为30%-85%[2]。
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英文: The head-up tilt table testing is performed using a specially designed tilting table in which, when the patient is tilted from supine to upright positions, vasovagal syncope is precipitated in predisposed patients.
中文: 直立倾斜试验在特殊设计的倾斜床上进行，患者由仰卧位向直立位过渡，此时对于易感病人血管迷走性晕厥。
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英文: With which scenarios is vasovagal syncope usually associated?
中文: 血管迷走神经性晕厥常和哪些情况有关？
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