In a pump infusion system comprising a pump adapted to be attached to a user and to cause infusion of pharmaceutical substances into the user's body, questions regarding the effects of administration of the pharmaceutical substances are provided, answers to said questions are transmitted to an attending staff, said answers are recorded, and said pump is controlled so as to adjust the dose of the pharmaceutical substances in accordance with said answers. Further, for a safe remote programming of such a pump infusion system, a predetermined program is assigned, a protocol to be programmed is compared with a protocol coming from the pump, possible errors of non-medically certified intervening devices and means are eliminated, and the programming is executed.