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with improved morbidity and mortality outcomes of out-of-hospital cardiac arrest. More information can be
found at .
EQUIPMENT AND MODES OF TRANSPORT
EMS transports occur by ground ambulance and by air ambulance, in both rotor-wing and fixed-wing aircraft.
Both modes of transport are used for scene and interfacility transports. The mode of transportation is determined
by personnel at the scene or at the transferring healthcare facility, by 9-1-1 dispatch personnel, or in mass
casualty events, by the incident commander. Guidelines for use of air versus ground ambulance have been
published, including an evidence-based guideline for the use of air transport for trauma patients. Air transport is
covered more specifically in Chapter 11 Interfacility Transport and Stabilization .
In 1969 and 1973, the National Academy of Science and the DOT published documents that generally defined
the purpose of an ambulance and its contents. A list of both adult and pediatric equipment for ground ambulances
has been published collectively by the AAP, the American College of Emergency Physicians (ACEP), American
College of Surgeons Committee on Trauma (ACS-COT), the EMSC Program, the Emergency Nurses Association
(ENA), the National Association of EMS Physicians (NAEMSP), and the National Association of State EMS
Officials (NASEMSO), and was most recently revised in 2013. This list is commonly used to establish the
minimum standard requirements for EMS programs ( Table 134.3 ). The consensus document is undergoing
revision, with anticipated publication in 2020.
There are typically two classes of ambulance service in the United States—each is primarily dedicated either to
ALS or BLS service. BLS units are equipped to conform to the previously mentioned list ( Table 134.3 ).
Included are ventilation and noninvasive airway equipment, an automated external defibrillator (AED),
immobilization devices, bandages, two-way communication equipment, obstetric kits, a length-based
resuscitation tape or similar guidance material, and other miscellaneous items. In addition to the equipment
contained in the BLS list, ALS units carry intubation and vascular access equipment, a portable
monitor/defibrillator, and a variety of medications.
Because of the limited space on an ambulance, most EMS crews will not have all of the mechanical or
pharmacologic options available in a hospital. Examples are a paramedic crew that carries morphine but not
fentanyl for analgesia, or normal saline and not lactated Ringer solution for fluid resuscitation. An example of a
state-approved list of medications for ALS ambulances is provided in Table 134.4 . More technically
sophisticated equipment and medications can often be added if required, as long as its use is established and
monitored by the medical director for the EMS service.