Evaluation of the Sub Epidermal Moisture a Device for the Screening of Pressure Ulcer (RELIASEM)

The device that is the subject of this investigation is a diagnostic tool to detect the among of fluid in hypodermis to help to prevent the formation of pressure injuries. The Sub Epidermal Moister(SEM) Scanner, is a non invasive portable medical device use to complet the clinical jugement of clinician. The study "RELIASEM" will study hospitalized patients with high risk of Pressure Injurieswith the next conditions: For each patient 14 mesures: 6 on the sacrum, 4 on the right heel and 4 on the left heel. This set of measure will be realized 2 timesby 4 different evaluator. To will have been trained in the use of the SEM Scanner where as the other will be novice. The main objective of this study is to determine on a risk population the intra- and inter-examiner reliability of the SEM Scanner