[Behavior of ventricular late potentials following catheter ablation of ventricular tachycardia].
In 10 patients non-invasively recorded signal-averaged electrocardiograms were obtained before and after direct-current ablation of ventricular tachycardia (right ventricular origin n = 5; left ventricular origin n = 5). The algorithms proposed by Simson and Karbenn et al. were used (modified Frank leads, high-pass filter cut-off frequency 25 Hz). No differences were observed between the mean values of the duration of the QRS-complex, the mean voltage during the last 40 ms of the QRS-complex, the duration of the late potentials and the number of patients having late potentials before and after ablation, respectively. The success of ablation could not be predicted by the signal-averaged ECG. There was no difference between the averaging parameters of those patients without recurrences of ventricular tachycardia during the follow-up period and those with (n = 3). Thus, the signal-averaged ECG did not prove helpful in predicting a successful outcome of direct-current catheter ablation of ventricular tachycardia.
Seifert
T
T
Medizinische Klinik und Poliklinik--Innere Medizin C, Westfälischen Wilhelms-Universität Münster.
Borggrefe
M
M
Karbenn
U
U
Martinez-Rubio
A
A
Breithardt
G
G
D000328:Adult; D006328:Cardiac Catheterization; D002311:Cardiomyopathy, Dilated / Q000150:complications; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000150:complications; D004562:Electrocardiography; D004564:Electrocoagulation; D005260:Female; D006352:Heart Ventricles / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications; D011183:Postoperative Complications / Q000601:surgery; D012815:Signal Processing, Computer-Assisted; D013610:Tachycardia / Q000601:surgery*; D013771:Tetralogy of Fallot / Q000150:complications
Verhalten ventrikulärer Spätpotentiale nach Katheterablation ventrikulärer Tachykardien.