Mechanisms of Undersensing by a Noise Detection Algorithm That Utilizes Far-Field Electrograms With Near-Field Bandpass Filtering.
J Cardiovasc Electrophysiol
; 28(2): 224-232, 2017 02.
Article
em En
| MEDLINE
| ID: mdl-27957764
ABSTRACT
BACKGROUND:
Implantable cardioverter defibrillators (ICDs) must establish a balance between delivering appropriate shocks for ventricular tachyarrhythmias and withholding inappropriate shocks for lead-related oversensing ("noise"). To improve the specificity of ICD therapy, manufacturers have developed proprietary algorithms that detect lead noise. The SecureSenseTM RV Lead Noise discrimination (St. Jude Medical, St. Paul, MN, USA) algorithm is designed to differentiate oversensing due to lead failure from ventricular tachyarrhythmias and withhold therapies in the presence of sustained lead-related oversensing. METHODS ANDRESULTS:
We report 5 patients in whom appropriate ICD therapy was withheld due to the operation of the SecureSense algorithm and explain the mechanism for inhibition of therapy in each case. Limitations of algorithms designed to increase ICD therapy specificity, especially for the SecureSense algorithm, are analyzed.CONCLUSION:
The SecureSense algorithm can withhold appropriate therapies for ventricular arrhythmias due to design and programming limitations. Electrophysiologists should have a thorough understanding of the SecureSense algorithm before routinely programming it and understand the implications for ventricular arrhythmia misclassification.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Arritmias Cardíacas
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Algoritmos
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Processamento de Sinais Assistido por Computador
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Técnicas Eletrofisiológicas Cardíacas
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Razão Sinal-Ruído
Tipo de estudo:
Diagnostic_studies
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Prognostic_studies
Limite:
Aged
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Female
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Humans
Idioma:
En
Revista:
J Cardiovasc Electrophysiol
Assunto da revista:
ANGIOLOGIA
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CARDIOLOGIA
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FISIOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Estados Unidos