In France, Intensive Medicine is carried out in three types of structures: intensive care units, intensive care unit and units Continuous Monitoring (USC). Created in the 90s as intermediate structures between conventional care units and intensive care units, these units are assigned to the care of patients whose conditions and treatment are fear the occurrence of one or more critical failures requiring to be monitored, or whose condition, at the end of one or more critical failure is too severe or unstable to allow a return to a classical inpatient unit.