| Postshock sensing performance in transvenous defibrillation lead systems: analysis of detection and redetection of ventricular fibrillation. | |
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MedLine Citation:
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PMID: 8535557 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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INTRODUCTION: The sensing performance of transvenous lead systems may be adversely affected by the delivery of high-energy shocks. This may be due to the proximity of the sensing and energy-delivery electrodes on transvenous leads. METHODS AND RESULTS: The time required for detection of ventricular fibrillation and redetection after a failed first shock was compared in 93 patients with five different lead system-pulse generator combinations: Cadence--Endotak 60 series, Ventak P--Endotak 60 series, Jewel--Transvene, Cadence--TVL, and Cadence--Transvene. A total of 418 successful and 204 failed first shocks were delivered during induced ventricular fibrillation. Redetection times (RED) were consistently shorter than detection times (DET) in the Jewel-Transvene (RED minus DET: -1.9 +/- 0.8 sec, P < 0.0001), the Cadence-TVL (-1.6 +/- 1.0 sec, P < 0.0001), and the Cadence-Transvene combinations (-2.0 +/- 0.9 sec, P < 0.0004). Redetection times were not significantly different than detection times in the Cadence-Endotak combination (0.9 +/- 3.1 sec; P = 0.09). Redetection times were significantly longer than detection times in the Ventak-Endotak combination (1.2 +/- 2.3 sec; P = 0.034). Prolonged individual redetection episodes (> 8.2 sec) were observed in the Cadence-Endotak (7 [10%] of 73 episodes) and the Ventak-Endotak (4 [10%] of 39 episodes), but not in the Jewel-Transvene, the Cadence-TVL, and the Cadence-Transvene combinations. CONCLUSIONS: Redetection of ventricular fibrillation may be delayed in some transvenous lead-pulse generator combinations. Successful redetection of ventricular fibrillation following a failed first shock should be demonstrated prior to hospital discharge of patients with implantable defibrillators. |
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Authors:
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D J Callans; U S Swarna; D Schwartzman; C D Gottlieb; F E Marchlinski |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of cardiovascular electrophysiology Volume: 6 ISSN: 1045-3873 ISO Abbreviation: J. Cardiovasc. Electrophysiol. Publication Date: 1995 Aug |
Date Detail:
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Created Date: 1996-02-08 Completed Date: 1996-02-08 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9010756 Medline TA: J Cardiovasc Electrophysiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 604-12 Citation Subset: IM |
Affiliation:
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Clinical Electrophysiology Laboratory, Philadelphia Heart Institute, Presbyterian Medical Center, Pennsylvania 19104, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Data Interpretation, Statistical Defibrillators, Implantable* Electrocardiography Female Humans Male Middle Aged Retrospective Studies Ventricular Fibrillation / diagnosis*, physiopathology, therapy |
| Comments/Corrections | |
Comment In:
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J Cardiovasc Electrophysiol. 1995 Aug;6(8):613-5
[PMID:
8535558
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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