摘要
The commonly proposed mechamism of syncope in patients(pts)withparoxymal supraventricular tachycardia(PSVT)is a more rapid tachycardiarate.Nevertheless,the probability of a coesxistent vasovagal syncope(VS)component has not bees adequatelly investigated in these patients.Westudied 3 groups:group 1(G1):20 syucopal patients(age:37±9 years,M/F:11/9)with supraventricular tachycardia,group 2(G2):40 Syncopalpatients(age:37±13 year,M/F:19/21)without supraventriculartachycardia,these syncopal patients with syncope of unknown etiology andgroup 3(G3):22 healthy controls(age:39±10 years,M/F:10/12).Thesame tilt table test(TTT)protocol was used(25min in 80 degreesUpright followed by two 10 min stages in the same postion undergraded isoproternol(iso)intravebiys infusion at 2ug/min and 5ug/min).The tilt table test was considered positive(pos)if induced syncope dueto hypocension with of without bradycardia.Results:A positive tilttable test result was observed in 13 patients of G1(65%)and 30 patientsof group 2(75%)(pNS).In contrast,only 5 of the healthy controls group(22.7%)developed syncope(p【0.05).We conclude that syncopalsupraventricular tachycardia patients commonly demonstrate a positivetilt table test.Tilt table test is a useful test for investigatingsyncope in patients with supraventricular tachycardia.Tilt table testis also a safe,simple and effective test for nonivasive identifyingvasovagal syncope.Tilt table test shoule be used widely.
The commonly proposed mechamism of syncope in patients(pts)with paroxymal supraventricular tachycardia(PSVT)is a more rapid tachycardia rate.Nevertheless,the probability of a coesxistent vasovagal syncope(VS) component has not bees adequatelly investigated in these patients.We studied 3 groups:group 1(G1):20 syucopal patients(age:37±9 years, M/F:11/9)with supraventricular tachycardia,group 2(G2):40 Syncopal patients(age:37±13 year,M/F:19/21)without supraventricular tachycardia,these syncopal patients with syncope of unknown etiology and group 3(G3):22 healthy controls(age:39±10 years,M/F:10/12).The same tilt table test(TTT)protocol was used(25min in 80 degrees Upright followed by two 10 min stages in the same postion under graded isoproternol(iso)intravebiys infusion at 2ug/min and 5ug/min). The tilt table test was considered positive(pos)if induced syncope due to hypocension with of without bradycardia.Results:A positive tilt table test result was observed in 13 patients of G1(65%)and 30 patients of group 2(75%)(pNS).In contrast,only 5 of the healthy controls group (22.7%)developed syncope(p<0.05).We conclude that syncopal supraventricular tachycardia patients commonly demonstrate a positive tilt table test.Tilt table test is a useful test for investigating syncope in patients with supraventricular tachycardia.Tilt table test is also a safe,simple and effective test for nonivasive identifying vasovagal syncope.Tilt table test shoule be used widely.
出处
《中国介入心脏病学杂志》
1998年第4期183-183,共1页
Chinese Journal of Interventional Cardiology
