The Effect of Applying Global Positioning System in Ambulances on Response Time of Tehran Emergency Medical Service

Background: Identification of the effective factors in reducing response time in prehospital emergency medical service (EMS) can assist in improving its services. This study aimed at reviewing the effect of applying global positioning system (GPS) on response time of Tehran EMS ambulances. Materials and Methods: Of ۱۳۲ Tehran EMS stations, ۲۴ ones were randomly selected, and relevant data, including the response time of all missions in ۲۰۰۹ (without GPS) and in ۲۰۱۱ (with GPS) as well as number of daily calls to  each dispatch center were extracted. The average number of daily calls in the call centers were categorized into ۳ groups as follows: I) ≤۱۰ calls, II) ۱۰ to ۱۵ calls, and III) >۱۵ calls. The statistical analysis of the obtained data was carried out by paired t test.  Results: The findings revealed that the average response times in ۲۰۰۹ for the ۳ groups (I, II, and III) were ۱۰.۱۱, ۱۱.۲۵, and ۱۰.۹۲ minutes, respectively. These times recorded for groups (I, II, and III) in ۲۰۱۱ were ۹.۸۶, ۱۰.۷۱, and ۱۱.۵۸ minutes, respectively, which were significantly less than the response times recorded in ۲۰۰۹ (P<۰.۰۰۱). Conclusion: This research has demonstrated that the application of GPS in the ambulances may be essential in the reduction of response time, especially in emergency stations with more average mission numbers

Keywords:

Prehospital , Emergency medical service , Global positioning system , Ambulance , Response time , Tehran