Performance of a ventricular automatic-capture algorithm in a wide clinical setting

Autor:	B S Giovanni Raciti, Giovanni Battista Del Giudice, Francesca Morandi, Patrizia Pepi, Oliveir Bizeau, Domenico Pecora, Serafino Orazi, Alberto Scaccia, Mattia Liccardo, Salvatore Ivan Caico, Olivier Citerne
Rok vydání:	2008
Předmět:	Male High energy business.industry Battery cell Cardiac Pacing Artificial Patient characteristics General Medicine Patient safety Electrocardiography Italy Backup Continuous data protection Therapy Computer-Assisted Tachycardia Ventricular Medicine Humans In patient Female Diagnosis Computer-Assisted Cardiology and Cardiovascular Medicine business Lead (electronics) Algorithm Algorithms Aged
Zdroj:	Pacing and clinical electrophysiology : PACE. 31(12)
ISSN:	1540-8159
Popis:	Background: The optimalprogramming of a pacemaker (PM) voltage output considers both efficiency (prolonging battery cell longevity) and patient safety (adequate safety margin). Currently, automatic capture (AC) algorithms are designed to ensure safe automatic stimulation threshold determination and pacing with a safety margin. Methods: The aims of this prospective observational study were (1) to evaluate, over a short-term follow-up, the extent of backup pacing in patients implanted with an AC-featured PM produced by Boston Scientific (Insignia) and a wide range of ventricular leads; (2) to identify patient- or lead-specific predictors of ventricular threshold increase or missed detection of the ventricular pacing threshold; and (3) to analyze day-to-day fluctuations in the ventricular pacing threshold and the relationship between their magnitude, the characteristics of patients, and the system implanted. Results: Five hundred and seventy-nine patients implanted with 89 different leads were followed up for a median of 2.1 months. Five hundred and thirty-six patients (92.5%) never experienced failure of automatic threshold testing; 571 (98.6%) did not experience permanent failure requiring continuous backup pacing at high energy. On multivariate analysis, none of the patient or lead characteristics predicted the occurrence of high-energy backup pacing during the study period. Day-to-day threshold fluctuations were associated only with higher thresholds (>1 V). Conclusion: AC algorithm reliably measures ventricular pacing thresholds in most patients: in only 1.4% of patients the system is permanently unable to detect the ventricular threshold. Backup pacing is not dependent on lead or patient characteristics, including lead polarization, polarity, and maturation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::650e8f6f1ad3d2dca666b37157fb4263 https://pubmed.ncbi.nlm.nih.gov/19067806 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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