| Atrioventricular block with 4:2 conduction pattern: what is the mechanism? | |
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MedLine Citation:
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PMID: 19570547 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We present the case of a 72-year-old man who was admitted because of acute ST-segment elevation myocardial infarction and presented with second-degree atrioventricular block with 4:2 conduction. We propose 3 alternative explanations for such an unusual conduction pattern: (1) supernormal conduction, (2) 2-level block with 4:1 conduction ratio in the upper level and 3:2 conduction ratio in the lower level, and (3) presence of 2 populations of Purkinje cells in the remaining, critically injured fascicle, one with the phase-3 block and the other with slow diastolic depolarization, leading, during a pause after the first nonconducted P, to phase-4 block. |
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Authors:
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Marek Jastrzebski; Piotr Kukla |
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Publication Detail:
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Type: Case Reports; Journal Article Date: 2009-06-30 |
Journal Detail:
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Title: Journal of electrocardiology Volume: 42 ISSN: 1532-8430 ISO Abbreviation: J Electrocardiol Publication Date: 2009 Nov-Dec |
Date Detail:
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Created Date: 2009-10-26 Completed Date: 2010-01-27 Revised Date: 2010-08-30 |
Medline Journal Info:
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Nlm Unique ID: 0153605 Medline TA: J Electrocardiol Country: United States |
Other Details:
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Languages: eng Pagination: 684-6 Citation Subset: IM |
Affiliation:
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1st Department of Cardiology and Hypertension, University Hospital, ul. Kopernika 17, Krakow, Poland. mcjastrz@cyf-kr.edu.pl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Atrioventricular Block / classification, diagnosis* Diagnosis, Differential Electrocardiography / methods* Humans Male |
| Comments/Corrections | |
Comment In:
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J Electrocardiol. 2010 Sep-Oct;43(5):466-7
[PMID:
20102771
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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