Abstract

Pain, as a complex neurophysiological and neuropsychological mechanism, is one of the most common experiences among patients in prehospital emergency service. Although, there is no accurate data regarding the prevalence of pain in prehospital settings like there is for hospital emergency departments, in developed countries, despite the contradictions in the results of the numerous studies, the evidence indicate the high prevalence of acute pain in prehospital emergency service ranging from 20% to 53%. Yet, unfortunately, in Iran there is no statistics available in this regard. The physiological (affecting cardiovascular, respiratory, endocrine and other systems) and psychological (anxiety, anger, aggression, and …) complications due to uncontrolled acute pain have many adverse effects on the clinical outcomes of medical and traumatic patients and impose immense direct and indirect financial burdens on the limited resources of healthcare systems.

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