[Outpatient surgery. Why? How?]

One day surgery--defined by the fact that the patient enters the clinic in the morning and returns at home late in the afternoon--requires the observation of a whole of criteria which are absolutely necessary to guarantee the highest security as possible. At first an outstanding collaboration with the anesthetist is mandatory. Material conditions of its practice should'nt be neglected. Rooms and medical staff have to be appropriate. Indications of its performance are large but depend of the experience of the surgeon. Limits are ruled by the general status of the patient and also by his social conditions and his surroundings, not to forget an excellent collaboration with the general practitioner. Economic advantages seem obvious but have to be calculated. It is above all necessary to persuade the public hospital administrations and the social Security structures, of the interest and the advantages of one day surgery.