[Management of pneumonia in advanced stage dementia].

Alzheimer's dementia is a leading cause of morbidity and mortality with devastating consequences for the affected individuals and their family. Pneumonia is a common complication in patients with advanced dementia that is frequently the direct cause of death. Despite the relatively well-established progressive and non-reversible trajectory of Alzheimer's disease, these patients still frequently receive curative treatments during the last months of their lives and access to palliative care is often delayed.

[Geriatry].

This review discuss several studies published in 2007 that will modify current therapeutic attitudes. New evidence confirm that antipsychotics increase mortality in demented elderly persons with behavioral symptoms. Unfortunately, donepezil was no more effective than placebo to treat agitation in these patients.

[Insomnia in the elderly].

In older persons, insomnia is a frequent problem with significant functional and psychological consequences. Use of over-the-counter medications is frequent and increases the risk of adverse events. Management of insomnia is based on a systematic evaluation that leads to targeted etiologic treatment when feasible.

Optimizing sodium balance in hemodialysis.

this paper develops and tests a mathematical model for Na+ kinetics applied to standard hemodialysis. The volume of distribution of exchangeable Na+, dialyzer surface area, blood and dialysis fluid flow rate, target weight loss, treatment duration and the Na+ diffusibility constant are taken into account. The model is used to compute the optimal hour by hour dialysis fluid Na+ concentration required to achieve the prescribed end-dialysis natremia and maintain a constant end-dialysis body Na+ pool, while providing a nearly uniform removal of Na+ over dialysis.