A method and medical system for the postdischarge surveillance of a patient (1) for detecting a case of pneumonia, secondary bleeding, a wound healing problem, a pulmonary complication, a urinary tract infection or a thrombosis of the patient (1), having a data bank (13), which is arranged at a location other than the location (2) at which the patient (1) is based during the surveillance and stores data relevant for the postdischarge surveillance of the patient (1) recorded during the postdischarge surveillance.