Advanced Computer Simulator Developed To Manage Hospital Emergencies
The model was designed based on real data provided by the Parc Taulí Healthcare Corporation, using modelling and simulation techniques adapted to each individual, and which require the application of high performance computing. The system analyses the reaction of the emergency unit when faced with different scenarios and optimises the resources available.
The simulator was created by lecturer Emilio Luque, main researcher of the project; UAB PhD students Manel Taboada, lecturer at the Gimbernat School of Computer Science - a UAB-affiliated centre - and Eduardo Cabrera, trainee researcher; and María Luisa Iglesias and Francisco Epelde, heads of the Emergency Services Unit of Parc Taulí.
"Planning the use of resources available to an emergency unit staff is a complex task, since the arrival of patients varies greatly, not only during the day, but depending on the week, month, etc. That is why those in charge find it useful to have computer tools which simulate the effects of special situations, such as seasonal increases, epidemics, and so forth, in order to be able to identify the best combination of resources for each moment", Emilio Luque explains.
The most outstanding part of the simulator is the precise representation of the behaviour of individuals who were identified and their interactions. "Several tries have been made to simulate emergency services, but using other types of methodologies which did not gather enough data on a system depending on human behaviour, which is based on the relation of individuals who act more or less independently in the decisions they make. In addition to in depth knowledge of the methodology, there is also the need to have direct access to the information and data provided by the emergency services, with the aim of verifying and validating the work carried out. This data is very relevant and was not included in other simulators", Manel Taboada states.
Researchers defined different types of patients according to their emergency level, and doctors, nursing teams, and admissions staff according to different levels of experience. This permitted studying the duration of processes such as the triage (when the emergency level is determined), the number and type of patients arriving at each moment, the waiting period for each stage or phase of the service, costs associated with each process, the amount of staff needed to determine a type of assistance and, in general, all other quantifiable variables. The system not only helps to make decisions in real time, it also can help by making forecasts and improving the functioning of the service.
The complexity level of the model is very elevated: it takes into account the elements relevant for the functioning of emergency services, such as computer systems, support services for clinic diagnoses (laboratories, X-rays, etc.) and consultations made with specialists. This allows testing service resistance in case any of these elements fail.
Another advantage of the new system compared to previous models is its adaptability to all types of emergency services. "Since it is based on a very complex service as the one we have here at Parc Taulí, it is quite easy to adapt it to other hospitals through a 'tuning' process where the data is redefined", Emilio Luque explains.
For now, the simulator has been used with level 4 and 5 patients - non-urgent patients according to the definition of the Spanish Triage System (SET). These represent almost 60% of total patients being attended, based on admission zones, triage and diagnosis-treatment processes. The version currently being developed by researchers is taking into account more severely affected patients (SET levels 1, 2 and 3). In the near future, researchers aim to apply the system to other medical specialties, such as surgical areas and paediatrics.
The implementation was carried out using the Netlogo environment simulator, of demonstrated reliability and commonly used in the application of Individual-Based Modelling and Simulation Techniques in the field of social sciences.
The work conducted by UAB researchers won first prize this past June in the 2012 International Computer Science Conference.
Universitat Autonoma de Barcelona
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