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 如病人年齡超過60歲并伴有不明因暈厥時(shí)可考慮此手法。如無心臟雜音、室性心動(dòng)過速、新近中風(fēng)或心梗,可在門診進(jìn)行。