STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPY

SUMMARY: The retrograde cardioplegia is a procedure regularly used to protect the miocardium during cardiac surgeries. The cardioplegic solution is retrogradly perfused through the coronary sinus, the main vein of the heart, and it is useful since the coronary venous system has shown to be free of a...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Matsuda,Marcelo, Valverde Barbato de Prates,Nadir Eunice
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 1998
Materias:	Heart Coronary Sinus SEM
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98681998000200005
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0716-98681998000200005
record_format	dspace
spelling	oai:scielo:S0716-986819980002000052005-10-04STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPYMatsuda,MarceloValverde Barbato de Prates,Nadir Eunice Heart Coronary Sinus SEM SUMMARY: The retrograde cardioplegia is a procedure regularly used to protect the miocardium during cardiac surgeries. The cardioplegic solution is retrogradly perfused through the coronary sinus, the main vein of the heart, and it is useful since the coronary venous system has shown to be free of any obstructing atherosclerotic disease. The opening of the coronary sinus occurs directly in the right atrium and an ostial valve at this level has long been related. However, a parietal valve in the coronary sinus has renewed the interest in this study. These valves could make difficult a perfect perfusion of the cardioplegic solution, particularly when low coronary sinus pressures are used. In order to understand the morphology of the parietal valve of the coronary sinus we decided to perform a study of the valve under SEM. Six fragments of the coronary sinus containing the parietal valve were taken from adult individuals, post mortem, with no gross cardiac pathologies. The samples were submitted to the usual techniques of Scanning Electron Microscopy. The parietal valve of the coronary sinus showed a half-moon shape, with a well defined structure. Its endothelium was arranged in parallel lines, similar to a stem of a tree, where we could evidence the nuclei of the endothelial cells. Under the endothelial layer we found abundant collagen and elastic fibers. Owing to its developed form seen under SEM, the parietal valve of the coronary sinus must play an important role in guiding the blood flow through the coronary sinus to the right atrium in physiological conditions and could raise difficulties to the flow of the cardioplegic solution during the retrograde cardioplegia.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaRevista chilena de anatomía v.16 n.2 19981998-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98681998000200005en10.4067/S0716-98681998000200005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Heart Coronary Sinus SEM
spellingShingle	Heart Coronary Sinus SEM Matsuda,Marcelo Valverde Barbato de Prates,Nadir Eunice STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPY
description	SUMMARY: The retrograde cardioplegia is a procedure regularly used to protect the miocardium during cardiac surgeries. The cardioplegic solution is retrogradly perfused through the coronary sinus, the main vein of the heart, and it is useful since the coronary venous system has shown to be free of any obstructing atherosclerotic disease. The opening of the coronary sinus occurs directly in the right atrium and an ostial valve at this level has long been related. However, a parietal valve in the coronary sinus has renewed the interest in this study. These valves could make difficult a perfect perfusion of the cardioplegic solution, particularly when low coronary sinus pressures are used. In order to understand the morphology of the parietal valve of the coronary sinus we decided to perform a study of the valve under SEM. Six fragments of the coronary sinus containing the parietal valve were taken from adult individuals, post mortem, with no gross cardiac pathologies. The samples were submitted to the usual techniques of Scanning Electron Microscopy. The parietal valve of the coronary sinus showed a half-moon shape, with a well defined structure. Its endothelium was arranged in parallel lines, similar to a stem of a tree, where we could evidence the nuclei of the endothelial cells. Under the endothelial layer we found abundant collagen and elastic fibers. Owing to its developed form seen under SEM, the parietal valve of the coronary sinus must play an important role in guiding the blood flow through the coronary sinus to the right atrium in physiological conditions and could raise difficulties to the flow of the cardioplegic solution during the retrograde cardioplegia.
author	Matsuda,Marcelo Valverde Barbato de Prates,Nadir Eunice
author_facet	Matsuda,Marcelo Valverde Barbato de Prates,Nadir Eunice
author_sort	Matsuda,Marcelo
title	STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPY
title_short	STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPY
title_full	STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPY
title_fullStr	STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPY
title_full_unstemmed	STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPY
title_sort	study of the parietal coronary sinus valve under scanning electron microscopy
publisher	Sociedad Chilena de Anatomía
publishDate	1998
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98681998000200005
work_keys_str_mv	AT matsudamarcelo studyoftheparietalcoronarysinusvalveunderscanningelectronmicroscopy AT valverdebarbatodepratesnadireunice studyoftheparietalcoronarysinusvalveunderscanningelectronmicroscopy
_version_	1718441635115696128

STUDY OF THE PARIETAL CORONARY SINUS VALVE UNDER SCANNING ELECTRON MICROSCOPY

Ejemplares similares