动态心电图中的室速：心电学与临床特点

Ambulatory ventricular tachycardia : Characteristicsof the electrocardiology and clinics

１５例动态心电图上≥１０个室性心动的非持续性和持续性室速（ＮＳＶＴ和ＳＶＴ），共计１３９阵。大部分室速（ＶＴ）的联律间期或≤４００ｍｓ或≥６００ｍｓ；短联律间期（＜５００ｍｓ）的ＶＴ频率高，多形室速（ＰＶＴ）多见；ＰＶＴ较单形室速（ＭＶＴ）频率高，联律间期短；９６％的ＶＴ发生在日间清醒状态下；所有病例无ＱＴ间期延长；与猝死和晕厥有关的心电学特征包括ＶＴ的频率，发作阵数，持续时间和ＰＶＴ；极短联律间期的ＶＴ可能进展为室颤。

The data from 15 cases with VT lasting for 10 or more than 10 con-secutive complexes that appeared on ambulatory ECG were analysed. Total 139 episodesof non-sustained (NSVT) or sustained VT (SVT) were initiated. The characteristics ofVT on electrocardiology and clinic-s included: the most coupling intervals of VT wereerthre 400 ms or >600 ms ; VT initiated by short coupling interval (<500 ms) , therate was rapid and the morphology is often polymorphic: Polymorphic VT (PVT) hadrapid rate and short coupling interval; the majority (96%) of VT were initiated duringawake daytimes; none of the cases had QT interval prolongation; the manifestation ofVT was associated with the rate. episode. duration and morphologyi VT initiated byvery short coupling interval may degenerate into ventricular fibrillation.