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Angiografía por resonancia magnética de trasplantes renales
W M Gedroyc1, R Negus, A al-Kutoubi
1Department of Radiology, St. Mary's Hospital, London, UK.
Lancet (London, England)
|March 28, 1992
Resumen
La angiografía por resonancia magnética (ARM) ofrece una alternativa no invasiva para el diagnóstico de la estenosis de la arteria renal en pacientes trasplantados de riñón. Este método demuestra una alta precisión, comparable a la angiografía tradicional, que ayuda en la evaluación de la disfunción del injerto.
Área de la Ciencia:
- Nefrología Nefrología.
- Radiología Radiología.
- Imágenes de imágenes vasculares.
Sus antecedentes:
- La estenosis de la arteria renal es una causa significativa de la disfunción del injerto de trasplante de riñón.
- El diagnóstico convencional a través de la angiografía de sustracción digital intraarterial (IADSA) es invasivo y conlleva riesgos.
Objetivo del estudio:
- Evaluar la angiografía por resonancia magnética (ARM) como una alternativa no invasiva al IADSA para el diagnóstico de la estenosis de la arteria renal en receptores de trasplantes.
- Para comparar la precisión diagnóstica de la ARM con la IADSA en esta población de pacientes.
Principales métodos:
- Comparación prospectiva de MRA e IADSA en 50 pacientes trasplantados de riñón.
- Evaluación de la sensibilidad y especificidad de MRA frente a IADSA.
- Clasificación retrospectiva de la gravedad de la estenosis de ambas técnicas de imagen.
Principales resultados:
- MRA demostró una sensibilidad del 83% y una especificidad del 97% en comparación con IADSA.
- Se encontró una correlación significativa (r = 0,74, p < 0,001) entre MRA e IADSA en la clasificación de la gravedad de la estenosis.
- La MRA proporcionó imágenes precisas y no invasivas de la arteria del trasplante renal.
Conclusiones:
- MRA es una técnica de imagen altamente sensible y específica no invasiva para evaluar la estenosis de la arteria del trasplante renal.
- La MRA puede servir como una valiosa alternativa a la angiografía invasiva para el diagnóstico y el seguimiento.
- Esto facilita un mejor manejo de los receptores de trasplante de riñón en riesgo de disfunción del injerto debido a la estenosis arterial.
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