To administer medication, this is diluted in water-based solutions to avoid inflammation of the veins. Therefore, patients receive large quantity of liquids every day, and, despite the treatments used to stimulate their elimination, it is quite usual for patients in Intensive Care to retain fluid. Limbs can swell, particularly the back of hands. In some cases, swelling can be all over the body, including the face, but this goes down after the treatments. Patients are regularly weighed and, if necessary, it is possible to speed up the resorption.