## 7 Discussion and Results  
The results of the questionnaires have been analysed from two different perspectives. Figure 4 shows the global values for the indicators that are defined in the analysis phase and evaluate the system following the consideration of responses from all the health professionals involved. Figures 5 and 6 (only the Deputy Head of hospital systems) illustrate the results of the indicators for each professional profile in the process of prescription-preparation/dosage-validation-elaboration-administration to patients in the CHUAC Day Hospital. Figure 4: Global values of the analysed indicators with a radial graphic. Figure 5: Values of the Indicators analysed for each professional profile. The training period for nursing personnel took less than a month and occupied approximately 2 h daily. It should be noted that the entry and exit of patients to and from hospital might not be identified correctly due to the poor positioning of tags; patients are therefore recommended to wear the RFID tag in a visible position upon entry to the hospital. The costs associated with the loss of tags (there has been one case), especially with elderly patients, should be noted, in addition to the fact that they are not reusable (from one user to another) as they cannot be sterilized in an autoclave. As a result they are given to the patient in a plastic bag with a European cut handle and a neck cord. Communication between the doctors and pharmacists has improved significantly, given the fact that the prescription and programming of administrations can be carried out immediately. In the same way, the arrival and health condition of a patient can be notified immediately. This allows nursing personnel in the pharmacy to work efficiently and safely in the preparation of medication while minimizing the number of unusable doses, taking into account the brief stability of these medications. Another key point of the system is the ability to control, in real time, the transport of intravenous mixtures with precise identification using computer-assisted surgery situated in the cabin: using NFC and UHF readers integrated as USBs, each medicine can be identified through the dual tag of dual frequency attached by nursing personnel following its preparation. The lowest value corresponds with the tracking of medication (3.46), which is not surprising given the number of tasks and the precision involved in the preparation process. This includes introducing the lot number and expiry date on each of the components, placing the RFID tag in flag position, placing the mixture in the cart, depositing it in the RFID tray to register delivery time, and finally its administration to the patient. The nursing personnel experienced an excess of work at the beginning of the learning process, as can be seen in the efficiency indicator (3.71 in their category), but recognized the safety issue, as is shown by the safety indicator in their professional profile (Figure 5). The general learning process of the sanitary staff could be minimized by organizing a series of longer sessions; this would also allow for the use of this system in other hospital services. The highest value relates to the traceability of the patient (4.78), where the RTLS system is capable of locating to a precision of between 1 and 4 m and less than 5 for the number of patients, especially elderly patients forgetting the device. The second highest value relates to the suitability of the system to routine clinical practice (4.38); we can conclude from this that we must include the collaboration of the majority of future users in the project analysis and the stages of design, implementation, tests, and beginning of the project. Certain adjustments to the system have been made which have caused  
Figure 6: Values of the indicators as analysed for the Deputy Head of hospital systems. delays to the project development, but this has contributed to the suitability of the system and its development for routine clinical practice in the hospital.