Emori T, Ohe T, Shimomura K
Department of Medicine, National Cardiovascular Centre, Osaka, Japan.
Br Heart J. 1993 Apr;69(4):356-8. doi: 10.1136/hrt.69.4.356.
A 41 year old woman had multiform ventricular tachycardia without QT prolongation. Monophasic action potentials were recorded from the right ventricle during the attacks of multiform ventricular tachycardia and effective refractory periods were examined at the same sites. There was no abnormal hump to suggest early afterdepolarisation in the monophasic action potentials, but there was dispersion of the effective refractory period in the right ventricle (80 ms). Stimulation from the right ventricular apex, where the effective refractory period was shortest, reproducibly induced multiform ventricular tachycardia. Two weeks after admission, when her condition was stable, multiform ventricular tachycardia could not be induced and the dispersion of the effective refractory period in the right ventricle was 20 ms.
一名41岁女性出现无QT间期延长的多形性室性心动过速。在多形性室性心动过速发作期间从右心室记录到单相动作电位，并在相同部位检查有效不应期。单相动作电位中没有异常驼峰提示早期后除极，但右心室有效不应期存在离散（80毫秒）。从有效不应期最短的右心室心尖部进行刺激，可重复性地诱发多形性室性心动过速。入院两周后，当她病情稳定时，无法诱发多形性室性心动过速，右心室有效不应期离散为20毫秒。
