Introduction. Methodological Instructions for Procedures of Healthcare Institution Reports on the Indicators of the Quality of Healthcare from 2007 also involve reaction times (RTs) I, II, I+II, III and IV, as the obligatory indicator of the quality of expert work of Emergency Medical Services (EMS). Objective. Evaluation of the quality of expert work of Belgrade EMS based on RTs. Methods. A retrospective analysis of priority 1 emergency calls in September 2009 vs September 2010, and RTs from I to IV as the recommended indicators of the quality of expert work of Belgrade EMS. Results. As detected, in 2010 there has been decrease in the total number of calls for physicians, and the total number of priority 1 emergency calls. By comparing RTs, the obtained data showed that in 2010 the time elapsed from when a priority 1 call was received until it was handed to the EMS team for implementation (RT I) was on average faster by 0.1 min (p<0.01), that the time elapsed from the dispatcher’s receipt of the call until the EMS team arrived to the patient (RT II) was faster on average by 0.42 min (p<0.05), and that the time for the team to reach the patient after the received call through the call centre (RT I+II) was faster by 0.15 min. Also, in 2010, RT III was shortened by 1.27 min and RT IV by 1.00 min. By summing RTs I, II and III, independently resolved level I emergency calls at the scene are obtained. In 2009, this time interval was, on average 38.02 min, and in 2010 it was an average of 36.23 min. By summing RTs I, II and IV, the time elapsed from the call received through the call centre until the patient’s hospital admission is obtained. In 2009 this time was average 31.08 min, and in 2010 it was average 29.16 min. Conclusion. One of the major advances in emergency medicine is providing assistance to a request for emergency medical care where this is produced. Therefore, the indicator of RTs may measure the quality of care provided by pre-hospital services.
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