Document Detail


Efficacy of automatic mode switching in DDDR mode pacemakers: the most 2 study.
MedLine Citation:
PMID:  18231849     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Effective automatic mode switching (AMS) algorithms capable of detecting a range of supraventricular tachyarrhythmias is important given evidence of atrial fibrillation (AF), atrial flutter (AFL), and atrial tachycardia (AT) post-implantation of pacemakers. OBJECTIVES: The aim of the study was to assess the efficacy, defined as ability to detect a specific atrial rate and activate AMS, of five different AMS mechanisms during simulation of AF, AFL, and AT. MATERIALS AND METHODS: A total of 48 subjects (35 men, 13 women; mean age: 69 +/- 8 years) implanted with DDDR pacemakers utilizing five different AMS mechanisms (mean atrial rate, rate cut-off, complex 'fallback' algorithm, retriggerable atrial refractory period, and physiological band 'beat-to-beat') were tested using an external electronic device that simulated the occurrence of supraventricular tachyarrhythmias. AF, AFL, and AT were simulated by delivering low voltage pulse trains at 350, 250 and 160 beats/min, respectively. RESULTS: Mean efficacy for all AMS mechanisms was 81% [range: 57% to 100%] at 350 beats/min, 81% [range: 57-100%] at 250 beats/min, and 79% [range: 57-100%] at 160 beats/min. The AMS mechanisms that yielded 100% efficacy were the rate cut-off and physiological band 'beat-to-beat.' CONCLUSION: Not all AMS algorithms are equally efficacious at detecting atrial arrhythmias and subsequently activating AMS. Our results suggest that the most efficacious AMS algorithms are those that use rate cut-off and physiological band 'beat-to-beat' to detect supraventricular tachyarrhythmias.
Authors:
Maurizio Santomauro; Luca Ottaviano; Alessio Borrelli; Gennaro Galasso; Carlo Duilio; Nicola Monteforte; Luigi Padeletti; Annibale Sandro Montenero; Peter Andrew; Massimo Chiariello
Related Documents :
421559 - Acute intoxication with verapamil.
22304679 - What limits [vdot]o(2max)?a symposium held at the bases conference, 6 september 2010.
9360339 - Radiofrequency catheter modification of sinus node for inappropriate sinus tachycardia:...
2390399 - Comparison of the normal sinus node with seven types of rate responsive pacemaker durin...
7942549 - Diagnostic value of recovery time measured by body surface mapping in patients with con...
11940549 - Validation of myocardial acceleration during isovolumic contraction as a novel noninvas...
1180109 - The pulmonary vasoconstrictor response to hypoxia: effects of inhibitors of prostagland...
6459159 - Myocardial blood flow and mechanics in volume overload-induced left ventricular hypertr...
15212749 - Protein requirements for endurance athletes.
Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2008-01-30
Journal Detail:
Title:  Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing     Volume:  21     ISSN:  1572-8595     ISO Abbreviation:  J Interv Card Electrophysiol     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2008-03-05     Completed Date:  2009-04-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9708966     Medline TA:  J Interv Card Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  13-7     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Federico II University Naples, Via Pansini 5, 80131 Naples, Italy. santomau@unina.it
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Aged
Algorithms*
Cardiac Pacing, Artificial / methods*
Equipment Design
Equipment Failure Analysis
Female
Humans
Male
Pacemaker, Artificial*
Tachycardia, Ventricular / diagnosis*,  prevention & control*
Therapy, Computer-Assisted / methods*
Treatment Outcome

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Verapamil-sensitive left posterior fascicular ventricular tachycardia after myocardial infarction.
Next Document:  Novel SNPs of the mtDNA ND5 gene and their associations with several growth traits in the Nanyang ca...