| Temporal discrepancies between low and high frequency vibrations of the second heart sound. | |
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MedLine Citation:
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PMID: 3083444 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The morphologic analysis of the second heart sound may provide some useful informations, not enough debated in the literature, concerning the functional status of cardiac patients. We noticed significant temporal discrepancies on the phonocardiographic tracings between the onset of the second heart sound in the lowest and in the highest frequency ranges. The correlations between the highest and the lowest frequency vibrations of the second heart sound were analysed in 119 controls, without overt cardiovascular disease, aged from 20 to 40 years and 50 to 70 years and in 148 patients with old myocardial infarction aged 42 to 80 years. The lowest frequency vibrations of the second heart sound appeared earlier in healthy young subjects than in middle-aged people. These differences may be explained by the reduced aortic compliance with advanced age. The incidence of early beginning of the low frequency vibrations of the second heart sound is greater in patients with old myocardial infarction and a poor myocardial contractile condition than in controls of about the same age. This difference may be due to impaired ventricular relaxation. |
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Authors:
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V Ionescu; M Târlea; N Moraru; M Palaghiţă |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Physiologie Volume: 23 ISSN: 1011-6206 ISO Abbreviation: Physiologie Publication Date: 1986 Jan-Mar |
Date Detail:
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Created Date: 1986-05-07 Completed Date: 1986-05-07 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7510964 Medline TA: Physiologie Country: ROMANIA |
Other Details:
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Languages: eng Pagination: 7-19 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Electrocardiography Female Heart Auscultation* Heart Sounds* Humans Male Middle Aged Myocardial Infarction / diagnosis Phonocardiography Reference Values Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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