如病人年龄超过60岁并伴有不明因晕厥时可考虑此手法。如无心脏杂音、室性心动过速、新近中风或心梗，可在门诊进行。
Consider this if the patient is aged more than 60 years with unexplained syncope. perform in the clinic if no bruits, ventricular tachycardia, recent stroke, or myocardial infarction.
背景长-QT综合征（LQTS）是一种潜在的致命性心脏的离子通道病，容易被误认为是心悸，神经心源性晕厥或者癫痫。
Background— Long-QT syndrome (LQTS) is a potentially lethal cardiac channelopathy that can be mistaken for palpitations, neurocardiogenic syncope, and epilepsy.
若年轻患者晕厥复发率高且未导致损伤、无器质性心脏疾病时，作精神病学检查很有效。
Psychiatric evaluation is useful in the setting of a high recurrence rate in a young patient without resultant injuries and no evidence of organic heart disease.
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