Comparison of pre-hospital emergency services time intervals in patients with heart attack in Arak5 Iran

[...]measuring the pre-hospital services time intervals is important for better management of emergency medical services delivery. According to the World Health Organization (WHO), about 17.7 million people die as a result of cardiovascular disease each year; which represents 31% of all deaths in the world. A study conducted in Arak reported that ambient air pollution is associated with hospital admission due to cardiovascular disease in Arak city.7 Emergency Medical Services (EMS) is the arrangement of personnel, facilities, and equipment for the effective and coordinated delivery of EMS required in the prevention and management of incidents, which occur either as a result of a medical emergency, incidents as well as natural disasters.8 The time-sensitive nature of the emergency medical services (EMS) can be shown with cardiac emergency care systems, meaning that the chance of survival of cardiac arrest without care outside of the hospital, will reduce by 10% per minute. [...]there is good evidence that demonstrates the importance of providing early defibrillation (in less than 4 minutes) for patient survival.9 The goals set by the American Heart Association, include an increase in the percentage of patients with heart attack reaching to a hospital in the first hour from the onset of symptoms, to 20%, and in six hours after symptoms, to 90%.10 In acute conditions of cardiovascular disease, especially the ischemic condition, reducing the time of receiving primary care is important for improving the prognosis of patients; however, there is little guidance on how the emergency medical system can optimize their time before reaching the hospital. All patients who had been diagnosed with a medical emergency, but not as a heart attack were excluded. [...]information about patients transmitted by the air emergency, which was less than one percent, has not been included in this study Missions in which, patients with a heart attack diagnosis refused to be transferred to a hospital, were calculated only for activation, response, on-scene and return time intervals.