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[Electrocardiographic characteristics of fasciculo-ventricular accessory pathways in children: A comparative study with right anteroseptal accessory pathways].
- Source :
-
Archivos de cardiologia de Mexico [Arch Cardiol Mex] 2018 Jul - Sep; Vol. 88 (3), pp. 212-218. Date of Electronic Publication: 2017 Jun 27. - Publication Year :
- 2018
-
Abstract
- Objectives: Fasciculo-ventricular (FV) accessory pathways (AP's) and right anteroseptal (RAS) AP's share similar anatomic locations and electrocardiographic characteristics. The objective of this article is to compare these features in children.<br />Methods: All patients with manifest pre-excitation who underwent an electrophysiological study were included. Fasciculo-ventricular AP's were defined by the presence of an HV interval≤32ms and a prolongation of the AH without changes in the HV interval, or the level of pre-excitation during atrial pacing. Three independent and blind observers analysed the ECG's in both groups.<br />Results: Out of 288 patients, 15 (5.2%) had FV AP's and 14 (4.9%) right AS AP's. The PR interval was longer in FV AP's than in RAS (113±21 vs 86±13ms respectively; P<.001) and the QRS was narrower (95±12 vs 137±24ms respectively; P<.001). The ECG in patients with FV AP's showed a rapid low amplitude deflection at the begining of the QRS in 13 out of 15 patients (87%) and in 2 (14%) the RAS AP group (P=.003).<br />Conclusions: The PR interval was longer and the QRS complex was narrower in patients with FV AP's. The presence of a rapid low amplitude deflection at the beginning of the QRS complex would allow to differentiate them from RAS AP's non-invasively.<br /> (Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.)
- Subjects :
- Accessory Atrioventricular Bundle physiopathology
Adolescent
Child
Electrophysiologic Techniques, Cardiac
Female
Humans
Male
Retrospective Studies
Wolff-Parkinson-White Syndrome physiopathology
Accessory Atrioventricular Bundle diagnosis
Electrocardiography methods
Ventricular Septum physiopathology
Wolff-Parkinson-White Syndrome diagnosis
Subjects
Details
- Language :
- Spanish; Castilian
- ISSN :
- 1665-1731
- Volume :
- 88
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Archivos de cardiologia de Mexico
- Publication Type :
- Academic Journal
- Accession number :
- 28666599
- Full Text :
- https://doi.org/10.1016/j.acmx.2017.05.003