[The prognostic significance and correlation of ventricular late potentials with programmed electrical stimulation in patients after myocardial infarction].
Seventeen patients (pts) after myocardial infarction (MI) were studied with signal-averaged electrocardiograph and cardiac programmed electrical stimulation (PES). In 7 pts with late potentials (LPs), sustained ventricular tachycardia (SVT) was induced in 6 cases (6/7, 85.7%); while it was induced only in 3 cases the 10 pts without LPs (3/10, 30%). Both have significant difference (P less than 0.01). During following observation, pts with LPs and SVT induced 5 of the 6 appeared clinical SVT or ventricular fibrillation (VF) repetitiously, and 1 died from sudden cardiac death. They also have significant difference (P less than 0.001) with pts without LPs and SVT not induced. These results suggests that LPs is a significant index for predicting future events and its combination with PES is helpful to screen high-risk pts after MI.
Zhou
B Y
BY
Division of Cardiology, First Hospital Beijing Medical University.
Hu
D Y
DY
Ding
Y S
YS
D000328:Adult; D000368:Aged; D004558:Electric Stimulation / Q000379:methods; D004562:Electrocardiography / Q000379:methods; D004594:Electrophysiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology*; D011379:Prognosis; D016276:Ventricular Function / Q000502:physiology*