Electrophysiology of ventricular vulnerability during early acute myocardial infarction
- VernacularTitle:急性心肌梗塞早期心室易损性的电生理实验研究
- Author:
Weihong LIU
;
Gengshan LI
- Publication Type:Journal Article
- Keywords:
Ventricular fibrillation;
Myocardial infarction
- From:
Chinese Journal of Pathophysiology
1989;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Ventricular vulnerable period (VVP) and veniricular fibrillation thre-sheld (VFT) and other electrophysiological items were measured simultaneously with S_1-S_2programmed electrical stimulation. The results showed that during early period of acutemyocardial infarction (AMI) VVP prolonged greatly, VFT decreased remarkably, pacingthreshold decreased, effective refractory period (ERP) shortened, strength interval curve(SIC) shifted downward, the outside of VVP extended to T wave, coupling-interval wasnegatively correlated with echo-interval. The results indicated that myocardial vulnerabi-lity during early period of AMI increased and ventricular arrhythmias were mainly causedby reentry.
