Ambulans müdahale süresini azaltmak için coğrafi bilgi sistemlerini kullanarak dinamik ambulans konuşlandirma: Türkiye Cumhuriyeti, Eskişehir il, Odunpazarı ilçesinin bir örnek olayi

Ambulances should always reach patients in the shortest time possible whenever they are called upon so as to increase patient survival chances especially in cardiac related medical cases. The placement of ambulances directly affects the time ambulances reach patients. The primary objective of the study was to reduce ambulance response times for Odunpazarı District emergency medical services system and increase patient survival chances as a result. The study used geographic information systems' technology to dynamically reallocate ambulance resources according to demand and time so as to reduce ambulance response time. Geospatial-time distribution of ambulance calls (demand) was used as a basis for optimal ambulance deployment using system status management strategy to deploy ambulances where higher demands are expected to cause ambulance response time reduction. The ArcGIS Network Analyst location allocation tool basing on maximal coverage location problem optimization model was used to come up with optimal ambulance stations to service most call demand areas within 5 minutes of drive time with a limited ambulance fleet size. As a result 77.6% of ambulance demand areas were located within 5 minutes of drive time from the nearest ambulance station. A total of 20,260 ambulance demand calls' data collected from January 1st to December 31st 2014 was used for the study which was obtained from the Eskişehir Province Health Directorate.