| The effect of shock separation time on multiple-shock defibrillation. | |
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MedLine Citation:
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PMID: 634187 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Reports in the literature of studies of the efficacy of multiple, staggered shocks used for cardiac defibrillation have shown widely varying results. Twin half sinusoids, separated by an integral number of 60-Hz half-cycles, were used for transthoracic defibrillation of dogs. The separation of the pulses was varied from 0 to 13 half-cycles (0 to 108 msec). An online computer was used to determine the energy content of each shock and to obtain curves of the percentage of success vs energy, current, and voltage. The results show that 2 pulses, separated by 9 half-cycles (75 msec), require 57 percent of the peak current and 87 percent of the peak voltage required by a single pulse. The energy requirement, however, was 9.9 percent higher with the staggered shock. Other pulse separations required higher voltages and currents. Possible mechanisms for the effect are discussed. |
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Authors:
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T W Moore; F N DiMeo; S E Dubin |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medical instrumentation Volume: 12 ISSN: 0090-6689 ISO Abbreviation: Med Instrum Publication Date: 1978 Jan-Feb |
Date Detail:
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Created Date: 1978-05-17 Completed Date: 1978-05-17 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0361136 Medline TA: Med Instrum Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 31-3 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Dogs Electric Countershock* Electricity Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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