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Riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: The role of high-voltage shock testing
AIM: To describe our experience with shock testing for the evaluation of patients with Riata™ leads. METHODS: Among 51 patients with normal baseline electrical parameters, 20 died during follow-up. Of the remaining 31 patients, 15 underwent the test: In 10 cases a defibrillation testing with ventric...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Baishideng Publishing Group Inc
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5124724/ https://www.ncbi.nlm.nih.gov/pubmed/27957252 http://dx.doi.org/10.4330/wjc.v8.i11.657 |
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author | De Maria, Elia Borghi, Ambra Bonetti, Lorenzo Fontana, Pier Luigi Cappelli, Stefano |
author_facet | De Maria, Elia Borghi, Ambra Bonetti, Lorenzo Fontana, Pier Luigi Cappelli, Stefano |
author_sort | De Maria, Elia |
collection | PubMed |
description | AIM: To describe our experience with shock testing for the evaluation of patients with Riata™ leads. METHODS: Among 51 patients with normal baseline electrical parameters, 20 died during follow-up. Of the remaining 31 patients, 15 underwent the test: In 10 cases a defibrillation testing with ventricular fibrillation (VF) induction and in 5 cases a R-wave-synchronized shock (> 20 J, without inducing VF). The test was performed under sedation with Midazolam. RESULTS: Twelve patients (80%) had a normal behavior during shock testing: In 8 cases induced VF was correctly detected and treated; in 4 cases of R-wave-synchronized shock electrical parameters remained stable and normal. Three patients (20%) failed the test. One patient with externalized conductors showed a sudden drop of high-voltage impedance (< 10 Ohm) after a 25 J R-wave-synchronized shock. Two other patients with externalized conductors, undergoing defibrillation testing, showed a short-circuit during shock delivery and the implantable cardioverter defibrillator was unable to interrupt VF. CONCLUSION: In Riata™ leads the delivery of a low current during routine measurement of high-voltage impedance may not reveal a small short circuit, that can only be evident by attempting to deliver a true shock, either for spontaneous arrhythmias or in the context of a shock testing. |
format | Online Article Text |
id | pubmed-5124724 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Baishideng Publishing Group Inc |
record_format | MEDLINE/PubMed |
spelling | pubmed-51247242016-12-12 Riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: The role of high-voltage shock testing De Maria, Elia Borghi, Ambra Bonetti, Lorenzo Fontana, Pier Luigi Cappelli, Stefano World J Cardiol Observational Study AIM: To describe our experience with shock testing for the evaluation of patients with Riata™ leads. METHODS: Among 51 patients with normal baseline electrical parameters, 20 died during follow-up. Of the remaining 31 patients, 15 underwent the test: In 10 cases a defibrillation testing with ventricular fibrillation (VF) induction and in 5 cases a R-wave-synchronized shock (> 20 J, without inducing VF). The test was performed under sedation with Midazolam. RESULTS: Twelve patients (80%) had a normal behavior during shock testing: In 8 cases induced VF was correctly detected and treated; in 4 cases of R-wave-synchronized shock electrical parameters remained stable and normal. Three patients (20%) failed the test. One patient with externalized conductors showed a sudden drop of high-voltage impedance (< 10 Ohm) after a 25 J R-wave-synchronized shock. Two other patients with externalized conductors, undergoing defibrillation testing, showed a short-circuit during shock delivery and the implantable cardioverter defibrillator was unable to interrupt VF. CONCLUSION: In Riata™ leads the delivery of a low current during routine measurement of high-voltage impedance may not reveal a small short circuit, that can only be evident by attempting to deliver a true shock, either for spontaneous arrhythmias or in the context of a shock testing. Baishideng Publishing Group Inc 2016-11-26 2016-11-26 /pmc/articles/PMC5124724/ /pubmed/27957252 http://dx.doi.org/10.4330/wjc.v8.i11.657 Text en ©The Author(s) 2016. Published by Baishideng Publishing Group Inc. All rights reserved. http://creativecommons.org/licenses/by-nc/4.0/ Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/ |
spellingShingle | Observational Study De Maria, Elia Borghi, Ambra Bonetti, Lorenzo Fontana, Pier Luigi Cappelli, Stefano Riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: The role of high-voltage shock testing |
title | Riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: The role of high-voltage shock testing |
title_full | Riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: The role of high-voltage shock testing |
title_fullStr | Riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: The role of high-voltage shock testing |
title_full_unstemmed | Riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: The role of high-voltage shock testing |
title_short | Riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: The role of high-voltage shock testing |
title_sort | riata silicone defibrillation lead with normal electrical measures at routine ambulatory check: the role of high-voltage shock testing |
topic | Observational Study |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5124724/ https://www.ncbi.nlm.nih.gov/pubmed/27957252 http://dx.doi.org/10.4330/wjc.v8.i11.657 |
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