a portable telemedicine device used in prehospital , preliminary diagnostic procedures and treatments includes a data processing unit for receiving and processing data . measurement devices for determining patient data relative to a predetermined patient . presentation device for displaying patient data received from the measurement devices . entry device for manually inputting manual data into the data processing unit . communication equipment for permitting bidirectional communication with at least one central unit for transmitting manually entered manual data and patient data to the central unit and to receive information data from the central unit representing results from diagnoses , suggested care and previously stored data on the predetermined patient . a predetermined number of the data processing unit , measurement devices , presentation device , entry device and communication equipment being integrated into a portable unit . a device for assigning priorities to the information data , the patient record file data , physiological data , form data , numbers , images upon transmission of the data to the central unit for ensuring that a highest priority data in a predetermined situation is transmitted first .