| The Ashman phenomenon. | |
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MedLine Citation:
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PMID: 15233390 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In the presence of atrial fibrillation, impulses of supraventricular origin that are transmitted through the ventricles during periods of relative refractoriness to impulse conduction exhibit anomalous configurations. These "aberrant beats" can be difficult to distinguish from ventricular ectopic beats, and groups of aberrant beats may be mistaken for ventricular tachycardia. Richard Ashman, PhD, a physiologist at Louisiana State University School of Medicine in New Orleans, noted that ventricular refractoriness varied with the lengths of cardiac cycles; that aberrant beats typically ended short cycles following long cycles; and that aberrant beats often have a right bundle branch block configuration. This observation, known as the "Ashman phenomenon," has become a principle of cardiology. Its recognition may allow clinicians to distinguish aberrant beats from ventricular ectopy. Ashman made a variety of other fundamental contributions to electrocardiography and was also an accomplished poet. |
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Authors:
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Lee B Kennedy; William Leefe; Bruce R Leslie |
Publication Detail:
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Type: Biography; Historical Article; Journal Article; Portraits |
Journal Detail:
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Title: The Journal of the Louisiana State Medical Society : official organ of the Louisiana State Medical Society Volume: 156 ISSN: 0024-6921 ISO Abbreviation: J La State Med Soc Publication Date: 2004 May-Jun |
Date Detail:
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Created Date: 2004-07-05 Completed Date: 2004-07-27 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 7505618 Medline TA: J La State Med Soc Country: United States |
Other Details:
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Languages: eng Pagination: 159-62 Citation Subset: IM |
Affiliation:
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Louisiana State University, School of Medicine, New Orleans, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Cardiology
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history Electrocardiography / history* History, 20th Century Humans Louisiana Physiology / history |
| Personal Name Subject | |
Personal Name Subject:
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Richard Ashman |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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