Is 8-mm more effective than 4-mm tip electrode catheter for ablation of typical atrial flutter?

The prospective, randomized study comparing 4- with 8-mm tip electrodes for radiofrequency linear ablation of typical atrial flutter is not available. A total of 104 consecutive patients with typical atrial flutter were randomly assigned to undergo radiofrequency linear ablation using a 4- (Group I,...

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Bibliographic Details
Published in:Circulation (New York, N.Y.) N.Y.), 1999-08, Vol.100 (7), p.768-771
Main Authors: TSAI, C.-F, TAI, C.-T, YU, W.-C, CHEN, Y.-J, HSIEH, M.-H, CHIANG, C.-E, DING, Y.-A, CHANG, M.-S, CHEN, S.-A
Format: Article
Language:English
Subjects:
Aged
Atrial Flutter - surgery
Biological and medical sciences
Catheter Ablation - instrumentation
Diseases of the cardiovascular system
Electrodes
Equipment Design
Female
Follow-Up Studies
Humans
Male
Medical sciences
Middle Aged
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Recurrence
Treatment Outcome
Tropical medicine
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Summary:The prospective, randomized study comparing 4- with 8-mm tip electrodes for radiofrequency linear ablation of typical atrial flutter is not available. A total of 104 consecutive patients with typical atrial flutter were randomly assigned to undergo radiofrequency linear ablation using a 4- (Group I, n=54) or 8-mm tip electrode (Group II, n=50) catheter (temperature-control model, preset 70 degrees C). If complete bidirectional isthmus block could not be achieved after 5 pulses, the ablation catheter was changed to the other type; the maximal radiofrequency pulse number was limited to
ISSN:0009-7322
1524-4539
DOI:10.1161/01.cir.100.7.768