[Advance care planning, an anticipation aid in Alzheimer's disease and related disorders].

Alzheimer's and related diseases are marked by a progressive cognitive decline that affects a person's identity, values and decision-making abilities. Anticipating choices and projecting oneself into the future becomes difficult. Advance directives and the testimony of the trusted support person and loved ones can sometimes be at odds with the new choices expressed by the patient at a more advanced stage of the illness. This makes it difficult to make the right decision with or for the patient. Advance care planning is an interesting tool in this context. It makes it possible to anticipate the care and life project in a dynamic and ongoing way, ensuring communication over time and considering gradual changes in values. This narrative ethics approach helps to bridge the gap between the wishes expressed in the past and those expressed today, by involving the patient throughout the course of the illness and relying on the support of loved ones and healthcare professionals. Its implementation and deployment require training for healthcare professionals and a genuine institutional policy.