We evaluated 20 patients with idiopathic ventricular tachycardia for structura l abnormalities using magnetic resonance imaging(MRI) and compared them with 20 controls. Two experienced observers interpreted the MRIs. ...We evaluated 20 patients with idiopathic ventricular tachycardia for structura l abnormalities using magnetic resonance imaging(MRI) and compared them with 20 controls. Two experienced observers interpreted the MRIs. There were no differen ces in incidence of qualitative MRI findings in patients compared with controls. These findings do not favor an association between anatomic abnormalities and a rrhythmia in these patients.展开更多
本文报道7例特发性右室室性心动过速的射频消融治疗.男2例,女5例;年龄14-47岁,右心房、右室心尖部及流出道分级递增和程序刺激,静滴异丙肾上腺素后重复电生理检查,诱发持续性单形室速2例,短阵室速2例(其中1例呈多形室早单形室速),LAD45...本文报道7例特发性右室室性心动过速的射频消融治疗.男2例,女5例;年龄14-47岁,右心房、右室心尖部及流出道分级递增和程序刺激,静滴异丙肾上腺素后重复电生理检查,诱发持续性单形室速2例,短阵室速2例(其中1例呈多形室早单形室速),LAD45、RAO30体位 X 线投照.采用起搏标测法,以室速周长起搏,体表心电图至少11导联 QRS 形态与室速相同的起搏部位,作为射频消融靶点,流出道间隔部室速先根据室速 I、V3导联的 QRS 形态,在 X 线影象指导下进行解剖定位,再精细标测起源灶.I 导联呈 R 波,大头电极在间隔部中后方标测,呈 Q 波在前方标测;V3导联有 r 波在上方,呈 Q 波在前下方标测.试放电20W×30S,如室早消失或减少,巩固放电35W×120S,重复前述电生理检查,不能诱发室速和室早认为射频消融成功.结果:4例流出道间隔部前上方、1例游离壁室速消融成功,1例间隔中后部及流入道室速未能成功.5例病人随访2-31月无室速复发.提示右室流出道室速射频消融成功率较高(5/6,83.3%),室速起源灶多数位于流出道间隔部前上方,影像学指导下解剖定位起搏标测是寻找消融靶点的有效方法.展开更多
文摘We evaluated 20 patients with idiopathic ventricular tachycardia for structura l abnormalities using magnetic resonance imaging(MRI) and compared them with 20 controls. Two experienced observers interpreted the MRIs. There were no differen ces in incidence of qualitative MRI findings in patients compared with controls. These findings do not favor an association between anatomic abnormalities and a rrhythmia in these patients.
文摘本文报道7例特发性右室室性心动过速的射频消融治疗.男2例,女5例;年龄14-47岁,右心房、右室心尖部及流出道分级递增和程序刺激,静滴异丙肾上腺素后重复电生理检查,诱发持续性单形室速2例,短阵室速2例(其中1例呈多形室早单形室速),LAD45、RAO30体位 X 线投照.采用起搏标测法,以室速周长起搏,体表心电图至少11导联 QRS 形态与室速相同的起搏部位,作为射频消融靶点,流出道间隔部室速先根据室速 I、V3导联的 QRS 形态,在 X 线影象指导下进行解剖定位,再精细标测起源灶.I 导联呈 R 波,大头电极在间隔部中后方标测,呈 Q 波在前方标测;V3导联有 r 波在上方,呈 Q 波在前下方标测.试放电20W×30S,如室早消失或减少,巩固放电35W×120S,重复前述电生理检查,不能诱发室速和室早认为射频消融成功.结果:4例流出道间隔部前上方、1例游离壁室速消融成功,1例间隔中后部及流入道室速未能成功.5例病人随访2-31月无室速复发.提示右室流出道室速射频消融成功率较高(5/6,83.3%),室速起源灶多数位于流出道间隔部前上方,影像学指导下解剖定位起搏标测是寻找消融靶点的有效方法.