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Importancia de la anatomía microquirúrgica del complejo A1-arteria comunicante anterior.

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Title: Importancia de la anatomía microquirúrgica del complejo A1-arteria comunicante anterior.
Authors: Monroy-Sosa, Alejandro1 ms_aleks@hotmail.com, Pérez-Cruz, Julio César1, Reyes-Soto, Gervith2, Delgado-Hernández, Carlos1, Macías-Duvignau, Mario Alberto1, Delgado-Reyes, Luis2
Source: Cirugía y Cirujanos. jul/ago2013, Vol. 81 Issue 4, p274-281. 8p.
Subjects: CEREBRAL arteries, MORPHOMETRICS, NEUROSURGERY, CAROTID artery physiology, BRAIN blood-vessels, OPTIC chiasm
Abstract (English): Background: The anterior cerebral artery originates from the bifurcation of the internal carotid artery lateral to the optic chiasm, then joins with its contralateral counterpart via the anterior communicating artery. A1- anterior communicating artery complex is the most frequent anatomical variants and is the major site of aneurysms between 30 to 37%. Objective: Know the anatomy microsurgical, variants anatomical and importance of complex precommunicating segment-artery anterior communicating in surgery neurological of the pathology vascular, mainly aneurysms, in Mexican population. Methods: The study was performed in 30 brains injected. Microanatomy was studied (length and diameter) of A1- anterior communicating artery complex and its variants. Results: 60 segments A1, the average length of left side was 11.35 mm and 11.84 mm was right. The average diameter of left was 1.67 mm and the right was 1.64 mm. The average number of perforators on the left side was 7.9 and the right side was 7.5. Anterior communicating artery was found in 29 brains of the optic chiasm, its course depended on the length of the A1 segment. The average length of the segment was 2.84 mm, the average diameter was 1.41 mm and the average number of perforators was 3.27. A1- anterior communicating artery complex variants were found in 18 (60%) and the presence of two blister-like aneurysms. Conclusion: It is necessary to understand the A1- anterior communicating artery complex microanatomy of its variants to have a three-dimensional vision during aneurysm surgery. [ABSTRACT FROM AUTHOR]
Abstract (Spanish): Antecedentes: la arteria cerebral anterior se origina de la bifurcación de la arteria carótida interna lateral al quiasma óptico, posteriormente se une con su homóloga contralateral mediante la arteria comunicante anterior. El complejo precomunicante(A1)-arteria comunicante anterior es el lugar más frecuente de variantes anatómicas y el sitio con mayor cantidad de aneurismas (30 a 37%). Objetivo: conocer la anatomía microquirúrgica, las variantes anatómicas y la importancia del complejo segmento precomunicante-arteria comunicante anterior en cirugía neurológica de la patología vascular, principalmente aneurismas, en población mexicana. Material y métodos: estudio prospectivo y descriptivo efectuado en el Departamento de Anatomía de la Facultad de Medicina (UNAM) en 30 encéfalos inyectados. Se estudió la anatomía microquirúrgica (longitud y calibre) del complejo segmento precomunicante-arteria comunicante anterior de la arteria cerebral anterior y sus variantes. Resultados: se encontraron 60 segmentos precomunicantes. La longitud promedio del lado izquierdo fue de 11.35 mm y del derecho de 11.84 mm. El calibre medio en el lado izquierdo fue de 1.67 mm y en el derecho de 1.64 mm. El número promedio de perforantes en el lado izquierdo fue de 7.9 y en el derecho de 7.5. La arteria comunicante anterior se encontró en 29 encéfalos sobre el quiasma óptico, su trayecto dependió de la longitud del segmento A1. La longitud media del segmento fue de 2.84 mm, el calibre fue de 1.41 mm y el número promedio de perforantes de 3.27. En 18 encéfalos (60%) se encontraron variantes del complejo A1-arteria comunicante anterior y dos aneurismas tipo blíster. Conclusión: es necesario entender la anatomía microquirúrgica del complejo segmento precomunicante-arteria comunicante anterior y conocer las variantes para tener una visión en tercera dimensión durante la cirugía de aneurismas. [ABSTRACT FROM AUTHOR]
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Database: MedicLatina
Description
Abstract:Background: The anterior cerebral artery originates from the bifurcation of the internal carotid artery lateral to the optic chiasm, then joins with its contralateral counterpart via the anterior communicating artery. A1- anterior communicating artery complex is the most frequent anatomical variants and is the major site of aneurysms between 30 to 37%. Objective: Know the anatomy microsurgical, variants anatomical and importance of complex precommunicating segment-artery anterior communicating in surgery neurological of the pathology vascular, mainly aneurysms, in Mexican population. Methods: The study was performed in 30 brains injected. Microanatomy was studied (length and diameter) of A1- anterior communicating artery complex and its variants. Results: 60 segments A1, the average length of left side was 11.35 mm and 11.84 mm was right. The average diameter of left was 1.67 mm and the right was 1.64 mm. The average number of perforators on the left side was 7.9 and the right side was 7.5. Anterior communicating artery was found in 29 brains of the optic chiasm, its course depended on the length of the A1 segment. The average length of the segment was 2.84 mm, the average diameter was 1.41 mm and the average number of perforators was 3.27. A1- anterior communicating artery complex variants were found in 18 (60%) and the presence of two blister-like aneurysms. Conclusion: It is necessary to understand the A1- anterior communicating artery complex microanatomy of its variants to have a three-dimensional vision during aneurysm surgery. [ABSTRACT FROM AUTHOR]
ISSN:00097411