PARAMEDIC

A paramedic is a medical professional, usually a member of the emergency medical services, who primarily provides pre-hospital advanced medical and trauma care. A paramedic is charged with providing emergency on-scene treatment, crisis intervention, life-saving stabilization and transport of ill or injured patients to definitive emergency medical and surgical treatment facilities, such as hospitals and trauma centers.
http://en.wikipedia.org/wiki/Paramedic

the treph

TREPH is a health professional as part of the community emergency medical services, trained and certified on a continuing basis, to provide emergency care to the injured at the scene and during transport, under the guidance of a physician specialist in emergency medicine

PREHOSPITAL EMERGENCY MEDICINE

Understand the decisions and actions needed to prevent death or disability of future patients during a health crisis. the practice of medicine for emergency respond to the demand of patient care and is accessible.
The initial process of recognition, stabilization, assessment, treatment and disposal of sick or injured person, and this depends on the time factor