| Bipolar transvenous defibrillation: efficacy of two different positions of the anode. | |
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MedLine Citation:
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PMID: 8552512 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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For most nonthoracotomy defibrillation lead systems, the transvenous anode can positioned independently of the right ventricular (RV) cathode. Usually a vertical position in the superior vena cava (SVC) is chosen. However, it is unknown if this position yields the optimal defibrillation threshold (DFT). Therefore, in 15 patients undergoing defibrillator implantation the SVC position was compared in a crossover study design with a horizontal position in the left brachiocephalic vein (BCV). Mean DFT was not different for SVC and BCV (19.2 +/- 9.6 J vs 18.5 +/- 9.1 J) but DFT of individual patients differed by up to 12 joules. A positive correlation between impedance and DFT in the BCV position (r = 0.6; P < or = 0.05) indicated that the improved geometry of the defibrillation field with the BCV position is opposed by a higher impedance found for this position (63 +/- 15 omega vs 52 +/- 7 omega). Thus, defibrillation is not improved in general although individual patients might benefit. |
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Authors:
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M Block; D Hammel; D Böcker; M Borggrefe; T Budde; M Castrucci; C Fastenrath; H H Scheld; G Breithardt |
Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Pacing and clinical electrophysiology : PACE Volume: 18 ISSN: 0147-8389 ISO Abbreviation: Pacing Clin Electrophysiol Publication Date: 1995 Nov |
Date Detail:
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Created Date: 1996-02-21 Completed Date: 1996-02-21 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7803944 Medline TA: Pacing Clin Electrophysiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1995-2000 Citation Subset: IM |
Affiliation:
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Hospital of the Westfälische Wilhelms, University of Münster, Department of Cardiolog/Angiology, Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Brachiocephalic Veins Cross-Over Studies Defibrillators, Implantable* Electric Conductivity Electric Countershock / methods* Electric Impedance Equipment Design Female Heart Ventricles Humans Iridium Male Middle Aged Platinum Prospective Studies Thoracotomy Vena Cava, Superior Ventricular Fibrillation / physiopathology, therapy |
| Chemical | |
Reg. No./Substance:
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7439-88-5/Iridium; 7440-06-4/Platinum |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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