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Asociación entre el volumen inyectado y el éxito del parche sanguíneo epidural en el dolor de cabeza post-punción
Amnon A Berger1, Samantha L Armstrong, Yunping Li
1From the Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.
Anesthesia and analgesia
|February 10, 2026
Resumen
Un mayor volumen de sangre en las manchas de sangre epidural (EBP) reduce la necesidad de repetir los procedimientos para el dolor de cabeza post-punción dural (PDPH). La inyección de 30 ml o más de sangre mejora significativamente la resolución del dolor de cabeza después de la primera EBP.
Área de la Ciencia:
- Obstetrías y Obstetricia.
- Anestesiología Anestesiología.
- La neurocirugía es la neurocirugía.
Sus antecedentes:
- El dolor de cabeza post-punción dural (PDPH) es una complicación común después de procedimientos neuraxiales.
- El parche de sangre epidural (EBP) es el tratamiento primario para PDPH, pero el volumen inyectado óptimo no está bien establecido.
- La práctica actual a menudo implica inyectar hasta que se siente la contrapresión, con datos limitados sobre volúmenes >20 ml.
Objetivo del estudio:
- Para determinar si el volumen de sangre inyectada durante una EBP está asociado con mejores resultados en pacientes obstétricos.
- Para investigar la relación entre el volumen sanguíneo EBP y la tasa de éxito del procedimiento inicial.
- Para evaluar si los volúmenes inyectados más grandes se correlacionan con la resolución completa de los síntomas de dolor de cabeza.
Principales métodos:
- Revisión retrospectiva de 317 pacientes obstétricos que recibieron EBP durante 10 años (mayo 2014-febrero 2024).
- Resultado primario: fracaso del primer EBP (que requiere un segundo EBP).
- Resultado secundario: resolución completa de los síntomas después de la EBP primaria. Modelo generalizado binomial utilizado para el análisis.
Principales resultados:
- La repetición de la EBP fue necesaria en el 22,8% de los pacientes.
- El volumen inyectado (mediana de 28.0 ml) y el tiempo desde el diagnóstico de PDPH hasta la EBP se asociaron significativamente con el éxito de la EBP.
- La inyección de ≥30 mL se asoció con una resolución completa de dolor de cabeza significativamente mayor (OR 1,85, P = 0,049).
Conclusiones:
- Los mayores volúmenes de sangre inyectada durante la EBP se asocian con una menor probabilidad de requerir un segundo procedimiento.
- EBP con ≥30 ml de sangre está relacionado con una resolución de los síntomas de dolor de cabeza significativamente mejor después de la primera EBP.
- Los ensayos prospectivos están justificados para investigar más a fondo la etiología de esta relación volumen-resultado.
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