Arizona Emergency Medical Systems, Inc.
Red Book - Chapter 3
Central Arizona Regional EMS Guidelines

On December 18, 2019, the AEMS Board of Governors approved the use of the Central Arizona Regional Guidelines. These guidelines replace all previous RED Book, Chapter 3 contents.

The clinical basis for these new guidelines is derived from the Arizona Department of Health Services, Bureau of Emergency Medical, Bureau of Emergency Medical Services and Trauma System's “Triage, Treatment, and Transport Guidelines (T3Gs).”

Click on the following link to access these guidelines.

The guidelines were developed and continue to be maintained by a collaborative effort between the following EMS entities:

  • Arizona Emergency Medical Systems, Inc. (AEMS)
  • Valley Medical Directors (VMD)

Approved by AEMS Board of Governors: December 18, 2019
Updated:November 9, 2020

The AEMS Board of Governors recognizes there may be a need for a period of training to successfully transition to the new Central Arizona Regional Guidelines. Therefore, for a limited time, the contents of the old Chapter 3 are being retained for your reference, during the transition period, and will not be updated or modified.


These guidelines are designed to be a resource document for use by Medical Direction Authorities, as defined by A.R.S. § 36-2205, responsible for the administrative, organizational and on-line medical direction of pre-hospital Emergency Medical Care Technicians (EMCTs). It is specifically recognized that documented regional or local variations from the guidelines contained within are not only acceptable, but also appropriate, depending on the individual circumstances of the involved areas and organizations.

By Statute and Rule, all advanced life support pre-hospital EMCTs shall have administrative and on-line medical direction. These guidelines are not meant to act as a substitute, proxy or alternative to that medical direction. Any conflict between these guidelines and the EMCT’s medical direction shall default to the Administrative or on-line medical direction.

These guidelines are deemed to be within the acceptable standard of medical care. It is specifically recognized that there are acceptable documented regional or local variations from these procedures and protocols, which may also satisfy the standard of care. This manual does NOT define, limit, expand, or otherwise purport to establish the legal standard of care.