| Functional properties of mahaim fibers. | |
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MedLine Citation:
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PMID: 926714 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Electrophysiological studies were performed in a patient with a short P-R interval and a small delta wave. The findings suggest that ventricular pre-excitation resulted from an infranodal bypass (Mahaim type). As the functional properties of the pathway were evaluated, impaired conductivity (suggested by rather long refractory periods) became apparent at frequency stress. The pathway could easily be blocked by Ajmaline. This demonstrated an unexpected early diastolic improvement in conductivity; i.e. a supernormal phase of conduction. Due to this supernormal phase, Mahaim-fiber conduction was present when block in the anterior division of the left bundle branch, or even trifascicular block occurred. Thus the effects of exclusive Mahaim-fiber conduction on ventricular activation were documented. |
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Authors:
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H Neuss; J Thormann |
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Publication Detail:
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Type: Case Reports; Journal Article |
Journal Detail:
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Title: Klinische Wochenschrift Volume: 55 ISSN: 0023-2173 ISO Abbreviation: Klin. Wochenschr. Publication Date: 1977 Nov |
Date Detail:
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Created Date: 1978-01-27 Completed Date: 1978-01-27 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 2985205R Medline TA: Klin Wochenschr Country: GERMANY, WEST |
Other Details:
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Languages: eng Pagination: 1031-7 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 Ajmaline / pharmacology Arrhythmias, Cardiac / physiopathology Atrioventricular Node / physiopathology* Bundle of His / physiopathology Electrocardiography Female Heart Conduction System / drug effects, physiopathology* Humans |
| Chemical | |
Reg. No./Substance:
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4360-12-7/Ajmaline |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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