Capture threshold of bipolar and unipolar pacing of left ventricle via coronary sinus branch: longitudinal study

Autor: Jakub Stritecky, Jan Kremlacek, Josef Hanus, Ludek Haman, Hana Stritecka, Jakub Simka, Petr Parizek
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Frontiers in Cardiovascular Medicine, Vol 10 (2023)
Druh dokumentu: article
ISSN: 2297-055X
DOI: 10.3389/fcvm.2023.1096538
Popis: IntroductionThe aim of this paper is to first monitor the changes in the capture threshold of endovascularly placed leads for left ventricle pacing, second to compare the pacing configurations, and third to verify the effect of Steroid elution for endovascular leads.Sample and MethodThe study included 202 consecutive single centre patients implanted with the Quartet™ lead (St. Jude Medical). The capture threshold and related lead parameters were tested during implantation, on the day of the patient’s discharge, and 3, 9, and 15 months after implantation. The electrical energy corresponding to the threshold values for inducing ventricular contraction was recorded for subgroups of patients with bipolar and pseudo-unipolar pacing vectors and electrodes equipped with and without a slow-eluting steroids. The best setting for the resynchronization effect was generally chosen. Capture threshold was taken as a selection criterion only if there were multiple options with (expected) similar resynchronization effect.Results and DiscussionThe measurements showed that the ratio of threshold energies of UNI vs. BI was 5× higher (p
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