| Electrocardiographic identification of mid-septal accessory pathways in close proximity to the atrioventricular conduction system. | |
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MedLine Citation:
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PMID: 8945082 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In order to identify ECG characteristics of overt mid-septal accessory pathways (APs) predictive of close proximity to the AV conduction system we analyzed data from patients who underwent successful RF catheter ablation of a mid-septal AP. Mean patient age was 31 +/- 16 years, and 13 were male. The 40 degrees right anterior oblique view was used to divide the mid-septal area into 3 zones: 1 (anterior portion); 2 (intermediate); and 3 (posterior portion). The 12-lead ECG was analyzed with regard to delta wave polarity and R/S transition in the precordial leads. The findings from patients ablated at zone 3 were compared to those at zones 1 and 2. All patients had a positive delta wave in the leads I, II, aVL, and negative delta wave in the leads III and aVR. The R/S transition occurred in lead V2 in 80% of patients. The delta wave in lead aVF was the only ECG characteristic that correlated with the AP ablation zone. Six of 8 patients ablated at zone 3 had a negative delta wave in lead aVF while 6 out of 7 patients ablated at zone 1 or 2 had a positive or isoelectric delta wave in lead aVF (P = 0.03). A positive or isoelectric delta wave in lead aVF identifies mid-septal AP in close proximity to the AV conduction system. |
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Authors:
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A Lorga Filho; E Sosa; M Scanavacca; A d'Avila; R Kuniyoshi; J de Horta; G Fenelon; P Brugada |
Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Pacing and clinical electrophysiology : PACE Volume: 19 ISSN: 0147-8389 ISO Abbreviation: Pacing Clin Electrophysiol Publication Date: 1996 Nov |
Date Detail:
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Created Date: 1997-03-06 Completed Date: 1997-03-06 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7803944 Medline TA: Pacing Clin Electrophysiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1984-7 Citation Subset: IM |
Affiliation:
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Heart Institute, São Paulo, Brazil. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Atrioventricular Node / pathology* Catheter Ablation Child Electrocardiography* / classification, methods Female Follow-Up Studies Forecasting Heart Conduction System / pathology*, surgery Heart Septum / innervation* Humans Male Middle Aged Recurrence Reoperation Tachycardia, Supraventricular / pathology, surgery |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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