 Study design. The study FRAGIREA is a multicentric prevalence study on the frequency of frailty among elderly patients and the quality of management. The voluntary ICUs will have to include all patients 70 years on a limited period 1 month or until the number of 15 inclusions is reached. The frailty is going to be evaluated by a frailty score adapted to the ICU, based on informations given by the patients family. 