Estrategias anestésicas para la prevención de delirium postoperatorio en adultos mayores
Artículo de Revisión
DOI:
https://doi.org/10.69825/cienec.v8i34.379Abstract
El delirium postoperatorio es una de las complicaciones neurocognitivas más frecuentes en adultos mayores sometidos a cirugía y se asocia con mayor mortalidad, estancia hospitalaria prolongada, deterioro funcional persistente e institucionalización. Su fisiopatología es multifactorial e involucra vulnerabilidad cerebral relacionada con envejecimiento, neuroinflamación, alteraciones neurotransmisoras y factores perioperatorios modificables. El objetivo de este trabajo fue sintetizar la evidencia sobre estrategias anestésicas dirigidas a prevenir delirium postoperatorio en población geriátrica. Se realizó una revisión de la literatura en bases de datos biomédicas internacionales, incluyendo ensayos clínicos aleatorizados, estudios observacionales, revisiones sistemáticas y metaanálisis publicados en los últimos años. Se incluyeron investigaciones en adultos mayores sometidos a cirugía que evaluaran intervenciones anestésicas asociadas con reducción de delirium. La evidencia muestra que la elección entre anestesia regional y general no presenta diferencias consistentes en la incidencia de delirium. En contraste, evitar anestesia excesivamente profunda mediante monitorización electroencefalográfica y titulación anestésica hacia planos más ligeros se asocia con menor riesgo en varios ensayos clínicos, aunque con heterogeneidad entre estudios. A nivel farmacológico, la dexmedetomidina perioperatoria es la intervención con mayor respaldo, mostrando reducciones significativas del delirium en ensayos y metaanálisis. Por el contrario, la ketamina subanestésica no demostró beneficio preventivo. Las guías actuales recomiendan un enfoque multimodal que combine optimización anestésica, estabilidad hemodinámica, analgesia adecuada y medidas no farmacológicas. En conclusión, la prevención del delirium postoperatorio en adultos mayores requiere estrategias integradas centradas en la modulación de la profundidad anestésica y sedación neurocognitivamente favorable
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