eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2015-12-28 8 2 1281 1285 10.13005/bpj/887 6157 article Mehran Peyvasteh 1 Fahimeh Valadi Beyranvand 2 Department of Surgery, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Since pre-hospital care is a crucial treatment component of critically ill patients, today, in urban health care system, generally reviewing and initial treatment of critical patient is conducted by the pre-hospital emergency and the more correct, accurate and more quickly it is done, the death and mutilation from diseases decline and on the other hand public confidence in the system increases. Therefore, this a method, the study will be conducted to evaluate the quality of prehospital emergency and investigate the causes of failure to get the patients to medical centers fast. This cross-sectional study investigates the viewpoints of the clinical staff of the Ahvaz EMS 115 on the main reasons of late transfer of patients to medical centers. To this end, the EMS 115 clinical staff were asked to fill a four-item questionnaire. The data were collected and statistically analyzed. Total of 154 personnel participated with average age of 44.4 ± 29.3 and had an average of 8.3 ± 3.17 years of work experience. Of them, 44.8% had diploma degree, 37.0% associate degree and 18.1% of them had a bachelor’s degree. For these people, the most important factor in arriving late to emergency mission has been the waste of time for non-emergency missions, 48.7% knew the importance of this issue as high and 44.8% as very high. Other factors in order of importance were: lack of observing ambulance priority by people, poor urban texture for ambulance transportation, lack of enough emergency facilities and ambulances, physical location and location of the bases and ultimately in terms of subjects, low motivation of staff due to high traffic of missions and their fatigue. Other reasons of the late arrival of the ambulance to the patients from the perspective of the EMS 115 staff include: lack of awareness of the people and inappropriate culture of contacting emergency 115, failure to provide accurate and full address by the caller to emergency 115, the communication problems to control and track telephone intruders, the lack of personnel’s update knowledge, non-emergency cases announced by the police force, lack of proper organization among the technician, doctor and patient, and lack of legal backing for 115 emergency personnel actively. https://biomedpharmajournal.org/vol8no2/studying-the-causes-of-late-arrival-of-pre-hospital-care-to-the-patients-in-the-view-of-clinical-staff-of-ahvaz-ems-115/ emergency medical service Ahvaz clinical staff late arrival causes of delays