| De subitaneis mortibus. XXIV. Ruptured interventricular septum and heart block. | |
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MedLine Citation:
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PMID: 870249 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Five patients with acute posterior myocardial infarction developed varying degrees of atrioventricular (A-V) block prior to rupture of their interventricular septums (IVS). In three of these five the times of septal rupture coincided with the resumption of conduced synus rhythm. During the period of A-V block, the only stable escape rhythm appeared to originate in the A-V junctional region, and in two patients early in their course there was evidence of enhanced A-V junctional automaticity. Although the A-V node contained extensive infarction in all five hearts, its distal part, and the entire His bundle and proximal branches appeared to be spared. The anatomical pattern of dissection within the ruptured IVS was similar in three hearts, extending upward to the crest of the IVS and penetrating into the interatrial septum in two of these. Multiple major coronary narrowing were present in all five hearts, especially of a dominating right coronary artery; recent thrombosis was present in the right coronary artery in four of the five cases. The A-V node artery was markedly narrowed by focal fibromuscular dysplasia in three hearts, compounding the ischemia for the A-V node and eliminating one important source of collateral circulation to the interventricular septum. |
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Authors:
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T N James |
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Publication Detail:
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Type: Case Reports; Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Circulation Volume: 55 ISSN: 0009-7322 ISO Abbreviation: Circulation Publication Date: 1977 Jun |
Date Detail:
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Created Date: 1977-06-30 Completed Date: 1977-06-30 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0147763 Medline TA: Circulation Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 934-46 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Atrioventricular Node / physiopathology Bundle of His / physiopathology Coronary Disease / complications, pathology Electrocardiography Female Heart Block / etiology*, pathology Heart Diseases / etiology Heart Septum* / pathology Humans Male Middle Aged Myocardial Infarction / complications Rupture, Spontaneous / etiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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