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2013, Number 4

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Cir Cir 2013; 81 (4)

Microsurgical anatomy importance of A1- anterior communicating artery complex

Monroy-Sosa A, Pérez-Cruz JC, Reyes-Soto G, Delgado-Hernández C, Macías-Duvignau MA, Delgado-Reyes L

Language: Spanish
References: 45
Page: 274-281
PDF size: 391.87 Kb.


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.


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