Document Detail


Radiofrequency ablation of idiopathic ventricular tachycardia.
MedLine Citation:
PMID:  8744617     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Radiofrequency ablation (RFA) has been shown to be very effective in the treatment of supraventricular tachycardias and has replaced surgical ablation. Only a few reports of RFA for idiopathic ventricular tachycardia (VT) have appeared in the literature during the last two years. AIM: This paper presents our experience with RFA for idiopathic VT in 19 patients. MATERIAL: The age range of patients was 22-60, with a mean of 37.9 years. Twelve out of 19 were females, two patients had cardiac failure due to almost incessant VT while the rest had normal left ventricular function. Twelve patients had VT arising from the right ventricle (RV); of these, nine were from the outflow tract, two from the RV apex, and one from the mid-anterior RV. Seven patients had VT arising from the left ventricle (LV); of these, five were from the inferobasal portion of the septum and two were from the anterolateral area. METHODS: In all patients the diagnostic study and therapeutic RFA were combined in a single procedure. Pacemapping was used to guide the site of RFA in patients with VT arising from the RV. Local activation time (LAT), Purkinje potentials (PP) and pacemapping were used to guide RFA in those patients with LV septal tachycardias. RESULTS: A total of 21 RF procedures were performed in 19 patients and 15 out of 19 patients had successful VT ablation. Ten of the 12 patients with RV tachycardias and all five patients with LV septal (left axis, right bundle branch block) tachycardias were successfully ablated. One patient with mid anterior RV VT required two attempts for successful ablation. One patient with RV outflow tract (RVOT) VT could not be ablated despite two attempts. Two patients with LV tachycardias arising from the antero-lateral LV could also not be ablated. During a follow up period of two to 16 months none of the successful patients had recurrence of VT. The number of RF applications was one to 27, mean 10; fluoroscopy times were four to 75, mean 26.9 minutes. CONCLUSION: Idiopathic VT frequently arises from the RVOT and inferobasal portion of the LV septum. These tachycardias can be diagnosed on clinical and ECG grounds. RFA for idiopathic VT arising from these areas has a high success rate and this mode of treatment should be considered as a nonpharmacological curative treatment for symptomatic patients.
Authors:
J Vohra; A Shah; W Hua; J Gerloff; A Riters
Related Documents :
10430717 - Respiratory response during arm elevation in isolated diaphragm weakness.
2444937 - A prospective evaluation of single and dual current pathways for transvenous cardiovers...
8438747 - Usefulness of metoprolol for unexplained syncope and positive response to tilt testing ...
3776857 - Prognostic usefulness of programmed ventricular stimulation in idiopathic dilated cardi...
3030677 - Physiology of ileoanal anastomosis with ileal reservoir for ulcerative colitis and aden...
11983787 - Characteristics of psychotic disorder due to traumatic brain injury: an analysis of cas...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Australian and New Zealand journal of medicine     Volume:  26     ISSN:  0004-8291     ISO Abbreviation:  Aust N Z J Med     Publication Date:  1996 Apr 
Date Detail:
Created Date:  1996-10-09     Completed Date:  1996-10-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  1264322     Medline TA:  Aust N Z J Med     Country:  AUSTRALIA    
Other Details:
Languages:  eng     Pagination:  186-94     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Royal Melbourne Hospital, Vic.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Catheter Ablation*
Chest Pain / etiology
Electrocardiography
Electrophysiology
Female
Humans
Male
Middle Aged
Postoperative Complications
Tachycardia / classification,  physiopathology
Tachycardia, Ventricular / diagnosis,  physiopathology,  surgery*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Variable hyperhomocysteinaemia phenotype in heterozygotes for the Gly307Ser mutation in cystathionin...
Next Document:  Detection of carriers of haemophilia A: use of bioassays and restriction fragment length polymorphis...