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Vol. 13. Issue 6.
Pages 446-454 (January 2002)
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Vol. 13. Issue 6.
Pages 446-454 (January 2002)
Tratamiento quirúrgico de los aneurismas de la arteria comunicante anterior basado en el estudio de angio-TAC con reconstrucción tridimensional y sin angiografía preoperatoria
Surgical management of anterior communicating artery aneurysms based in computed tomographic angiography with three-dimensional reconstruction and without preoperative angiography
J.M. González-Darder
, R. Feliu, J.V. Pesudo, J.Mª. Borras
Servicios de Neurocirugía. Hospital General de Castellón
R. Gómez*, C. Díaz*, S. Lázaro*, J.H. García-Vila*
* Servicios de Radiodiagnóstico. Hospital General de Castellón
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Abstract
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Resumen
Objetivos

Estudiar el valor de la exploración mediante angiotomografía computarizada con reconstrucción tridimensional (angio-TC-3D) en el tratamiento microquirúrgico de los aneurismas del territorio de la arteria comunicante anterior (AComA).

Material y Métodos

Se intervinieron consecutivamente 28 pacientes con aneurismas de la AComA rotos y diagnosticados mediante angio-TC-3D y sin angiografía preoperatoria. Se valoran los hallazgos de la angio-TC-3D, exploración microquirúrgica y los datos clínicos.

Resultados

No hubo falsos positivos ni falsos negativos en el diagnóstico de los aneurismas de AComA, siendo la sensibilidad global de la técnica del 87.9%. El estudio mediante angio-TC-3D demuestra una dominancia del segmento Al izquierdo en el 53.6% de los casos, del segmento Al derecho en el 14.3% e igualdad de ambos segmentos en el 32.1%. Los aneurismas que asentaban en el trayecto de la AComA se asociaban a segmentos Al de calibre semejante y trayecto de la AComA paralelo al eje transversal, mientras que los aneurismas localizados en la unión A1-A2 se asociaban a segmentos Al homolaterales dominantes y a un trayecto oblicuo de la arteria AComA. El clipaje microquirúrgico se efectuó una media de 3.7 días tras el sangrado.

Conclusiones

El estudio de los pacientes con hemorragia subaracnoidea mediante angio-TC-3D permite un diagnóstico seguro de los aneurismas de la AComA. La exploración proporciona datos anatómicos que permiten estudiar los cambios hemodinámicos involucrados en la génesis de los aneurismas. También se obtiene información de utilidad a la hora de planificar el abordaje microquirúrgico para la exclusión del aneurisma. El estudio mediante angio-TC-3D permite mejorar algunos indicadores asistenciales pero el impacto en el resultado final de los pacientes no ha podido ser evaluado en el presente estudio.

Palabras clave:
Hemorragia subaracnoidea
Aneurisma cerebral
Angiografla por tomograiía computada
Cirugía
Summary
Objective

To demonstrate the usefulness of three-dimensional computed tomographic angiography (CT-3D-angiography) in the microsurgical management of aneurysms of the anterior communicating artery (AComA).

Materials and Methods

A total of 28 consecutive patients with ruptured aneurysms of the AComA diagnosed by means of CT-3D-angiography and without preoperative angiography were operated on. The findings of the T-3D-angiography, microsurgical exploration and clínical data were evaluated.

Results

There were no false positive findings nor false negative findings in the diagnosis of the AComA aneurysms. The global sensibility of the examination was 87.9%. The CT-3D-angiography study shows a left Al segment dominance in 53.6% of cases, a right Al dominance in 14.3% of cases and both Al segments of the same diameter in 32.1%. Aneurysms growing on the traject of the AComA were associated with both Al segments of the similar diameter and an AComA traject pararell to the transverse plane. Aneurysms implanted on the A1-A2 junction were associated with a dominant homolateral Al segment and an oblique AComA traject. Microsurgical management of the lesions was done a mean of 3.7 days after bleeding.

Conclusion

The study of patients with acute subarachnoid hemorrhage with CT-3D-angiography allows a reliable diagnosis of AComA aneurysms. The examination gives some anatomical data that allow the study of the hemodinamic changes involved in the development of the aneurysms. Moreover, provides usefull information for the microsurgical clipping. CT-3D-angiography allows to improve some health indicators but its impact in the final result of the patients needs more clinical data.

Key words:
Subarachnoid hemorrhage
Cerebral aneurysm
Computed tomography angiography
Microsurgery

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