Advanced

Anatomy of the inferior interatrial route in humans

Mitrofanova, L; Ivanov, V and Platonov, Pyotr LU (2005) In Europace 7. p.49-55
Abstract
Aims To explore the morphology of the proximal coronary sinus (CS) and the surrounding tissues in order to identify possible routes for interatrial conduction. Method Specimens containing interatrial septum and proximal CS were taken from 21 necropsied hearts and sliced into 10-mu m thick parallel histological sections in 1-mm steps starting from the valve plane, up to the atrial. roof (40-80 sections per heart). The sections were stained with van Gieson's stain. Results Media in the proximal CS consists of smooth muscle cells that do not form a continuous layer. CS was not surrounded by striated atrial myocardium in 10 specimens in which posterior CS wall was covered by epicardial fat only. In seven specimens, striated muscle bundles of... (More)
Aims To explore the morphology of the proximal coronary sinus (CS) and the surrounding tissues in order to identify possible routes for interatrial conduction. Method Specimens containing interatrial septum and proximal CS were taken from 21 necropsied hearts and sliced into 10-mu m thick parallel histological sections in 1-mm steps starting from the valve plane, up to the atrial. roof (40-80 sections per heart). The sections were stained with van Gieson's stain. Results Media in the proximal CS consists of smooth muscle cells that do not form a continuous layer. CS was not surrounded by striated atrial myocardium in 10 specimens in which posterior CS wall was covered by epicardial fat only. In seven specimens, striated muscle bundles of up to 2-mm width connected the myocardium surrounding the CS with the left atrium. Regardless of their presence, variable posterior and/or anterior interatrial muscular connections were identified in all specimens. Conclusion Variability of the striated atrial. myocardium surrounding proximal CS may affect interatrial conduction. Striated muscular fascicles connecting the proximal CS with the left atrium are not obligatory cardiac structures and may be considered as supplementary to the larger interatrial connections outside the CS. (c) 2005 The European Society of Cardiology. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
interatrial conduction, atrial fibrillation, atrial anatomy, sinus, coronary
in
Europace
volume
7
pages
49 - 55
publisher
Oxford University Press
external identifiers
  • wos:000231744700007
  • scopus:24344485192
ISSN
1532-2092
DOI
10.1016/j.eupc.2005.03.014
language
English
LU publication?
yes
id
b4ea39e7-5d4d-46e4-8804-92197b768913 (old id 224990)
date added to LUP
2007-08-03 14:50:41
date last changed
2017-01-15 03:34:09
@article{b4ea39e7-5d4d-46e4-8804-92197b768913,
  abstract     = {Aims To explore the morphology of the proximal coronary sinus (CS) and the surrounding tissues in order to identify possible routes for interatrial conduction. Method Specimens containing interatrial septum and proximal CS were taken from 21 necropsied hearts and sliced into 10-mu m thick parallel histological sections in 1-mm steps starting from the valve plane, up to the atrial. roof (40-80 sections per heart). The sections were stained with van Gieson's stain. Results Media in the proximal CS consists of smooth muscle cells that do not form a continuous layer. CS was not surrounded by striated atrial myocardium in 10 specimens in which posterior CS wall was covered by epicardial fat only. In seven specimens, striated muscle bundles of up to 2-mm width connected the myocardium surrounding the CS with the left atrium. Regardless of their presence, variable posterior and/or anterior interatrial muscular connections were identified in all specimens. Conclusion Variability of the striated atrial. myocardium surrounding proximal CS may affect interatrial conduction. Striated muscular fascicles connecting the proximal CS with the left atrium are not obligatory cardiac structures and may be considered as supplementary to the larger interatrial connections outside the CS. (c) 2005 The European Society of Cardiology.},
  author       = {Mitrofanova, L and Ivanov, V and Platonov, Pyotr},
  issn         = {1532-2092},
  keyword      = {interatrial conduction,atrial fibrillation,atrial anatomy,sinus,coronary},
  language     = {eng},
  pages        = {49--55},
  publisher    = {Oxford University Press},
  series       = {Europace},
  title        = {Anatomy of the inferior interatrial route in humans},
  url          = {http://dx.doi.org/10.1016/j.eupc.2005.03.014},
  volume       = {7},
  year         = {2005},
}