| Effects of DC electric countershock on ventricular function, cation balance and endogenous norepinephrine in the dog heart. | |
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MedLine Citation:
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PMID: 4458946 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Effects of DC electric countershock on cardiac function in thoracotomized dogs were evaluated from recordings of ECG, aortic pressure, left ventircular pressure and its first derivative, and coronary sinus flow. Samples of arterial and coronary venous plasma and left ventricular myocardium obtained before and after countershock at times corresponding to post-shock arrhythmias and recovery were analyzed for Mg++, K+ and Ca++, and norepinephrine. At 1 min after countershock, ECG changes included transient cardiac arrhythmias and ST segment alterations, accompanied by depressed ventricular function and decreased myocardial Ca++ concentration. At 5 min postshock, coronary venous Mg++ and K+ concentrations had risen and ventricular function was still depressed. Function recovered within 10-20 min. There was no evidence of consistent loss of endogenous myocardial norepinephrine. |
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Authors:
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S Laniado; N M Buckley; C W Frank; D Kambosos |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Cardiology Volume: 59 ISSN: 0008-6312 ISO Abbreviation: Cardiology Publication Date: 1974 |
Date Detail:
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Created Date: 1975-07-24 Completed Date: 1975-07-24 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 1266406 Medline TA: Cardiology Country: SWITZERLAND |
Other Details:
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Languages: eng Pagination: 253-67 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 Blood Pressure Calcium / metabolism Cations, Divalent Cations, Monovalent Dogs Electric Countershock* Electrocardiography Heart / physiology* Magnesium / metabolism Myocardium / metabolism Norepinephrine / metabolism* Potassium / metabolism Ventricular Function |
| Chemical | |
Reg. No./Substance:
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0/Cations, Divalent; 0/Cations, Monovalent; 51-41-2/Norepinephrine; 7439-95-4/Magnesium; 7440-09-7/Potassium; 7440-70-2/Calcium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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