| Fascicular premature beats with narrow QRS in the presence of bundle-branch block. | |
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MedLine Citation:
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PMID: 6160528 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The electrocardiogram of a sixty-two-year-old male revealed right bundle-branch block, left anterior superior fascicular block, and right precordial Q waves consistent with anteroseptal myocardial infarction. Premature beats with narrow QRS (100 ms) occurred intermittently; coupling intervals varied between 560-600 ms. His bundle electrogram confirmed the fascicular origin of the premature beats. During atrial prematuring studies, it was shown that an appropriately timed premature beat could prolong infra-His conduction time, but QRS normalization was not achieved. The possible electrophysiologic mechanisms that could result in a normal QRS complex with fascicular premature beats in this patient are discussed; a new mechanism is suggested. |
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Authors:
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K Venkataraman; N P Mathews; M Bilitch |
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Publication Detail:
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Type: Case Reports; Journal Article |
Journal Detail:
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Title: Pacing and clinical electrophysiology : PACE Volume: 3 ISSN: 0147-8389 ISO Abbreviation: Pacing Clin Electrophysiol Publication Date: 1980 May |
Date Detail:
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Created Date: 1981-02-19 Completed Date: 1981-02-19 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7803944 Medline TA: Pacing Clin Electrophysiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 340-5 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Arrhythmias, Cardiac
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etiology* Bundle of His / physiopathology* Bundle-Branch Block / physiopathology* Electrocardiography Electrophysiology Heart Conduction System / physiopathology* Humans Male Middle Aged Myocardial Infarction / complications |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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