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.

• 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。