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

Abstract

Background: Identification of the effective factors in reducing response time in prehospital\remergency medical service (EMS) can assist in improving its services. This study aimed at\rreviewing the effect of applying global positioning system (GPS) on response time of Tehran\rEMS ambulances.\rMaterials and Methods: Of 132 Tehran EMS stations, 24 ones were randomly selected,\rand relevant data, including the response time of all missions in 2009 (without GPS) and in\r2011 (with GPS) as well as number of daily calls to each dispatch center were extracted. The\raverage number of daily calls in the call centers were categorized into 3 groups as follows: I)\r≤10 calls, II) 10 to 15 calls, and III) >15 calls. The statistical analysis of the obtained data was\rcarried out by paired t test.\rResults: The findings revealed that the average response times in 2009 for the 3 groups (I, II,\rand III) were 10.11, 11.25, and 10.92 minutes, respectively. These times recorded for groups (I,\rII, and III) in 2011 were 9.86, 10.71, and 11.58 minutes, respectively, which were significantly\rless than the response times recorded in 2009 (P<0.001).\rConclusion: This research has demonstrated that the application of GPS in the ambulances\rmay be essential in the reduction of response time, especially in emergency stations with more\raverage mission numbers.