Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Effect of lead design and pacing vector on electrical parameters of quadripolar coronary sinus leads: The RALLY-X4 study

Abstract : Background Various lead designs have been developed to accommodate different coronary sinus anatomies. Our objectives were to compare electrical parameters of straight and spiral left ventricular leads, to evaluate capture thresholds and impedances using different pacing vectors, and to study evolution of thresholds over time. Methods The RALLY-X4 study enrolled patients implanted with a lead from the Acuity X4 family (straight, spiral short, or spiral long). Electrical parameters (including capture thresholds from all 17 vectors) were measured at baseline and follow-up. Results Data from 795 patients who were successfully implanted were analyzed. Straight and spiral leads had similar proportions of patients with thresholds <2.5 V/0.4 ms using the distal electrode (61-65% of patients) or from at least one of the proximal (E2-E4) electrodes (81-83% of patients). Unipolar vectors had significantly lower thresholds and impedances than bipolar vectors, with similar measurements compared to extended bipolar configurations. Capture thresholds increased with more proximal electrodes for all leads. Over a mean follow-up of 1 year, a slight decrease in capture thresholds was observed. Conclusion Straight and spiral quadripolar leads allow to obtain clinically acceptable capture thresholds from at least one of the proximal electrodes in >80% of patients. Pacing vectors significantly affect electrical parameters, with higher thresholds in more proximal electrodes and lower thresholds with unipolar and extended bipolar configurations. Capture thresholds slightly decreased over a mean follow-up of 1 year.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal-u-picardie.archives-ouvertes.fr/hal-03572228
Contributeur : Louise Dessaivre Connectez-vous pour contacter le contributeur
Soumis le : lundi 14 février 2022 - 10:51:10
Dernière modification le : mardi 15 février 2022 - 03:00:16

Lien texte intégral

Identifiants

Collections

Citation

Haran Burri, Max Olaf Schrage, Giovanni Morani, Yasushi Sakata, Jean-Sylvain Hermida, et al.. Effect of lead design and pacing vector on electrical parameters of quadripolar coronary sinus leads: The RALLY-X4 study. PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 2019, 42 (7), pp.1018-1025. ⟨10.1111/pace.13716⟩. ⟨hal-03572228⟩

Partager

Métriques

Consultations de la notice

2