CASE REPORT

Prevalência de Anastomoses da Circulação Carótido-vertebrobasilar em um Hospital de Referência em Neurologia na Cidade de Curitiba

Prevalence of Anastomoses of Vertebro Carotido-basilar Circulation in a Neurological Referral Hospital in the City of Curitiba

  • Lorena Maria Dering (1)
  • André Giacomelli Leal (2)
  • Murilo Sousa de Meneses (3)
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Resumo

Introdução: Durante o desenvolvimento embrionário ocorre uma série de anastomoses na circulação carótido-vertebrobasilar. Após determinado tempo, essas anastomoses regridem, dando origem às artérias comunicantes posteriores e vertebrais. Em alguns indivíduos, pode ocorrer a persistência de algumas das anastomoses, originando uma das seguintes artérias: comunicante posterior com padrão fetal; trigeminal persistente; ótica persistente; hipoglossal persistente; e intersegmentar pro-atlantal. Objetivo: Avaliar a prevalência das anastomoses carótido-vertebrobasilares em um hospital de referência em Neurologia e Neurocirurgia na cidade de Curitiba, durante um período de 10 anos. Método: Estudo retrospectivo com dados coletados de prontuários de pacientes que realizaram exames de arteriografia cerebral com subtração digital no Departamento de Hemodinâmica do hospital durante o período de janeiro de 2009 a janeiro de 2019. Os dados extraídos foram organizados em uma planilha do programa Microsoft Excel e avaliado o exame de todos os pacientes para determinação da prevalência das anastomoses persistentes. Resultado: Ao todo, foram obtidas 2.267 arteriografias cerebrais e encontrada a prevalência da artéria trigeminal persistente de 0,001% (dois casos) e da artéria intersegmentar pro-atlantal de 0,0004% (um caso). Conclusão: Apesar de raros, os casos de anastomoses persistentes são frequentemente associados a patologias vasculares e complicações em procedimentos endovasculares e neurocirurgias.

Palavras-chave

Anastomose; Carótido-basilar; Hemodinâmica; Artéria intersegmentar pro-atlantal; Artéria trigeminal persistente

Abstract

Introduction: During the embryonic development a series of anastomosis appear in the carotid-vertebro basilar circulation to maintain the correct cerebral blood flow. Normally, these anastomoses disappear as posterior communicating arteries are developed. Sometimes the persistence of one of these anastomoses may occur, originating one of the following arteries: Posterior communicating artery, Primitive trigeminal artery, Persistent optic artery, Persistent hypoglossal artery, and Proatlantal intersegmental artery. Objective: to evaluate the prevalence in 10 years of carotid-basilar anastomosis in a neurological referral hospital in the city of Curitiba. Method: Restrospective study was performed with data collected from medical records of patients who underwent cerebral digital subtraction angiography (DSA) in the hemodynamics department at the hospital from January 2009 to January 2019. Data was input in a Microsoft Excel spreadsheet and images of each patient were evaluated to determine the existence of persistent anastomosis. Results: A total of 2,267 DSAs were obtained as a result. Two cases of primitive trigeminal artery (0.001% prevalence) and one case of proatlantal intersegmental artery (0.0004% prevalence) were found. Conclusion: Although rare, the cases of persistent anastomoses are often associated with vascular pathologies and complications in endovascular procedures and neurosurgeries.

Keywords

Anastomosis; Carotid-basilar; Hemodynamics; Proatlantal intersegmental artery; Primitive trigeminal artery

References

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PMid:30369905.



1 Biomedical scientist, INC 3D Technology Lab, Neurological Institute of Curitiba – INC, Curitiba, PR, Brazil.
2 MD, PhD, Neurosurgeon, Coordinator of Vascular Neurosurgery Department, Neurological Institute of Curitiba – INC, Curitiba, PR, Brazil.
3 MD, PhD, Neurosurgeon, Chairman of Endovascular and Functional Neurosurgery Department, Neurological Institute of Curitiba – INC, Curitiba, PR, Brazil.

 

Received Jul 20, 2021
Accepted Jan 13, 2022

JBNC  Brazilian Journal of Neurosurgery

JBNC
  •   ISSN (print version): 0103-5118
  •   e-ISSN (online version): 2446-6786
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