NDLI: De subitaneis mortibus. XXIV. Ruptured interventricular septum and heart block.

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De subitaneis mortibus. XXIV. Ruptured interventricular septum and heart block.

Content Provider	Semantic Scholar
Author	James, Thomas N.
Copyright Year	1977
Abstract	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.
Starting Page	73
Ending Page	80
Page Count	8
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://circ.ahajournals.org/content/circulationaha/55/6/934.full.pdf?download=true
PubMed reference number	870249v1
Volume Number	55
Issue Number	6
Journal	Circulation
Language	English
Access Restriction	Open
Subject Keyword	Anatomic Node Bundle-Branch Block Cell septum Contain (action) Fibromuscular Dysplasia Heart Block Interatrial septum Myocardial Infarction Patients Right coronary artery structure Rupture Septum - general anatomical term Sinoatrial Node Thrombosis Transitional Region Ventricular Septal Defects Ventricular septum
Content Type	Text
Resource Type	Article

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