Tachycardia cycle length and maximum capacity of anterograde and retrograde atrioventricular conduction in paroxysmal supraventricular tachycardia

Détails

ID Serval
serval:BIB_91FCDE218E9B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Tachycardia cycle length and maximum capacity of anterograde and retrograde atrioventricular conduction in paroxysmal supraventricular tachycardia
Périodique
Canadian Journal of Cardiology
Auteur(s)
Sadr-Ameli  M. A., Lacombe  P., Fromer  M., Nadeau  R., Shenasa  M.
ISSN
0828-282X (Print)
Statut éditorial
Publié
Date de publication
04/1988
Volume
4
Numéro
3
Pages
134-9
Notes
Journal Article --- Old month value: Apr
Résumé
Anterograde and retrograde pathways are the two major components of the reentry circuit in patients with paroxysmal supraventricular reentrant tachycardias. Therefore, the capacity of each pathway to maintain 1:1 conduction would be expected to determine the cycle length (CL) of the tachycardia. In this study, the possible relationship between the CL of reentrant tachycardia and the maximum capacities of anterograde and retrograde conduction in the maintenance of a 1:1 response during atrial and ventricular pacing were examined. This relationship was analyzed in 26 patients with orthodromic reentrant tachycardia due to Wolff-Parkinson-White syndrome (group 1) and compared with that in 26 patients with atrioventricular nodal reentrant tachycardia (group 2). There were no statistically significant differences between the two groups in the shortest tachycardia CLs (mean +/- SD, 325 +/- 44 versus 329 +/- 52 ms); in the shortest ventricular pacing CLs with 1:1 response (314 +/- 63 versus 319 +/- 38 ms); nor in the CLs that produced retrograde atrioventricular block (306 +/- 62 versus 301 +/- 37 ms). In contrast, the longest atrial pacing CL that produced Wenckebach's phenomenon and the shortest atrial pacing CL with 1:1 response were significantly shorter for group 1 than for group 2 patients (290 +/- 38 versus 390 +/- 88 ms, P less than 0.001) and (305 +/- 38 versus 406 +/- 90 ms, P less than 0.001), respectively. It was concluded that the CL of orthodromic tachycardia can best be predicted from the shortest atrial pacing CL that maintains 1:1 anterograde conduction via the normal pathway.(ABSTRACT TRUNCATED AT 250 WORDS)
Mots-clé
Adolescent Adult Atrioventricular Node/*physiopathology Autonomic Nerve Block *Cardiac Pacing, Artificial Female Heart Conduction System/*physiopathology Humans Male Middle Aged Tachycardia, Atrioventricular Nodal Reentry/*physiopathology Tachycardia, Paroxysmal/physiopathology Tachycardia, Supraventricular/*physiopathology Wolff-Parkinson-White Syndrome/*physiopathology
Pubmed
Web of science
Création de la notice
28/01/2008 10:55
Dernière modification de la notice
03/03/2018 19:30
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