【摘要】 采用多阶段异丙基肾上腺素直立倾斜试验(MITTT),对36例不明原因的晕厥患者进行研究。试验结果28例呈阳性,阳性率为77.8％。表现类型:混合型23例占82.1％,血管抑制型4例占14.3％,心脏抑制型1例占3.6％。对试验阳性反应病人给予心得安10～15mg 3次/日或倍他乐克25～50mg 2次/日,服药2～3周。治疗后重复本试验均为阴性。随访3～18个月,无1例再发晕厥。更多还原

【Abstract】 Thirty-six patients with unexplained syncope were tested by multistage-isoproterenol tilt table test (MITTT). A positive response occurred in 28 patients (77.7%). Three patterns of heart rate and blood pressure response to MITTT were observed: mixed type manifested in 23 ( 82.2 %) patients, vasodepressive type in 4(14.2%) patients,and cardioinhibitory type in 1(3.6%) patient.-Positive response patients were treated with propranolol (10~15mg,tid) or betaloc (25~50mg,bid) for 2 to 3 weeks. After treatment all patients were subjected to MITTT again,no symptoms were positive. No syncope occurred in following 3 to 18 months.更多还原