• P Krolak-Salmon and C Mouchoux.
• Inserm U1028, Centre de Mémoire, de Ressources et de Recherche de Lyon, Centre des Neurosciences de Lyon, Hôpital des Charpennes, Hospices Civils de Lyon, Université Claude-Bernard Lyon-1, 27, rue Gabriel-Péri, 69100 Villeurbanne, France. pierre.krolak-salmon@chu-lyon.fr
• Ann Fr Anesth Reanim. 2011 Oct 1;30(10):e61-3.

AbstractHip fracture is an important step in the autonomy evolution in elderly. As gait is particularly jeopardised after such a traumatism, cognition may also be acutely impaired. Elderly post-surgery delirium is frequent, but chronic progression of cognitive impairment and dementia may occur. The concept of cognitive reserve is crucial for understanding risk factors of post-surgery delirium in elderly. The more the cognitive reserve is decreased before such a traumatism, the higher the delirium and dementia progression risk is. A neurodegenerative disease such as Alzheimer's disease may be clinically silent prior the traumatic event, and may decompensate soon after as the cognitive reserve is not sufficient anymore. Dementia may then lead to progressive autonomy loss. A systematic interdisciplinary approach is needed to prevent frail patients from delirium, and to early cure it to decrease the risk of long-term autonomy loss.2011. Published by Elsevier SAS.

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