Before the EMT contacts medical direction for authorization to assist a patient with shortness of breath in using her metered-dose inhaler, protocols state that the EMT must first attempt to provide relief by administering oxygen if the pulse oximeter reading is less than 94%. You recognize that the administration of oxygen is best described as a(n):

Emergency care systems (ECS) can address a wide range of acute conditions, including emergent conditions from communicable diseases, non-communicable diseases, pregnancy, and injury.  Emergency medicine and public health can interact in at least four areas: Surveillance of diseases, injuries, and health risks Monitoring health care access Delivering clinical preventive services Developing policies to protect and improve the public's health  Effective emergency care systems can serve as settings for public health interventions for difficult to reach populations. For example, there are... Show more

Emergency care systems (ECS) can address a wide range of acute conditions, including emergent conditions from communicable diseases, non-communicable diseases, pregnancy, and injury. 

Emergency medicine and public health can interact in at least four areas:
Surveillance of diseases, injuries, and health risks
Monitoring health care access
Delivering clinical preventive services
Developing policies to protect and improve the public's health 

Effective emergency care systems can serve as settings for public health interventions for difficult to reach populations. For example, there are successful examples from high-income countries (HICs) on the role of emergency care systems in health promotion and disease prevention. 
Emergency Medical Services (EMS) is a system that coordinates healthcare, public health, and public safety. EMS data is valuable to researchers, policymakers, and public health officials. The data is used to improve the response to and treatment of patients suffering from traffic crashes, severe injuries, acute illness, or other medical emergencies. 
Strong emergency care systems based on robust evidence are critical to advancing global health.

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