AirMedEvac: care during air transport
AirMedEvac stands for Aeromedical Evacuation and means medically accompanied air transport of wounded, injured or ill people to or between treatment facilities. A medical team trained for this task provides care and monitors patients during flight; the aircraft, patient stations and equipment must support the care each patient needs. For injured isolated personnel, AirMedEvac connects pickup with the onward journey into treatment. Reaching, identifying and protecting the person at the pickup site are tasks for recovery forces. Medical care during air movement may begin at that pickup or after a handover at another location.
AirMedEvac is a medical transport function. A helicopter can pick up casualties from a difficult access area, while an aeroplane can move patients who have already received treatment between facilities. Both can provide aeromedical evacuation when personnel, equipment and flight conditions support the required care. A search and rescue mission initially describes finding and rescuing the person; the subsequent patient movement requires its own medical preparation.
From pickup to patient care
Recovery from a hostile environment first requires actual access to the person. Terrain, the adversary, an unsuitable landing site or the casualty’s inability to move may require a surface team and a separate journey to the transport platform. These forces establish contact, identify and protect the person and may provide emergency medical care. US Pararescue personnel, for example, combine technical rescue with emergency care and movement to safety. This function answers how a casualty can be picked up at all; subsequent in-flight care answers what support the patient needs along the way.
After initial treatment, medical personnel reassess the patient’s condition and prepare them for movement. Patients moving tactically between treatment facilities within the operational theatre will normally have been stabilised beforehand. In this context, stabilisation means bringing acute problems under sufficient control for the planned movement to be possible with the available medical support. Some patients can be stabilised only for a limited period or need critical care during movement. Medical capability, transport time and destination must then fit together. Having already received treatment does not replace reassessment or continued monitoring.
Information the casualty can contribute
A personal account starts with what happened and when: a fall, an explosion or a prolonged illness, for example. It then describes injuries and changes actually noticed. “I cannot bear weight on my left foot”, “breathing is getting harder” or “the dressing has bled through again since the last stop” tells the receiving team more than a self-selected diagnosis. This is followed by measures already taken, tourniquets applied and their application times, and medicines given and when. Measurements are reported only when they have actually been taken; an estimated number can obscure an existing finding.
Mobility is a separate piece of pickup information. Can the person walk with their equipment, stand only with support, sit without help or must they be carried? Can they understand and follow instructions? A walking casualty needs different access and accommodation from a patient on a litter. Being able to cover a short distance independently says little about the ability to tolerate a longer journey. Someone alone describes their own capabilities; a companion adds observed changes that the casualty may not have noticed.
When a connection actually reaches someone able to act on it, location, number of people, condition, mobility, visible threats and available pickup or signalling aids help forces assess the requirement. A transport request and a medical handover serve different purposes: the request organises access and movement, while a MIST report carries forward the mechanism of injury, injuries, signs or symptoms and treatment already given. Until transfer, trained self-aid or buddy aid and protection against heat loss continue with the means available. Changes and measures can be written down with times so their sequence remains clear at the later handover.
Patient, medical team, aircrew and coordination
The medical team receives the findings, assesses care requirements during movement and prepares patient stations, monitoring, supplies and equipment. The aircrew is responsible for flying the aircraft and safe movement aboard it; loadmasters or flight technicians coordinate loading and accommodation according to the platform. Movement coordination matches medical needs to available transport and a suitable destination. Several decisions therefore depend on each other for the isolated person: an urgent medical movement also needs a feasible pickup, a serviceable aircraft and a reachable facility able to provide the required care.
Before loading, the team must establish where the patient will lie or sit, how they will be secured and how staff will reach them. Monitoring and treatment equipment is checked for function and compatibility with the platform. Oxygen supplies, electrical power and the electrical load from medical devices must match planned care. Patients with greater needs may require specialist personnel to augment the normal medical flight crew.
Why flight requires medical preparation
During flight, the patient experiences different stresses from those in a treatment facility. As ambient pressure falls, the partial pressure of oxygen in inspired air falls; this can place an additional burden on oxygenation. Noise makes conversation harder, vibration and movement hinder examination and care, and a fall in temperature can increase heat loss. Available space limits the number of people who can work on a patient at once. These conditions affect both the casualty and the medical team’s work and must be considered in preparation.
Condition and the effects of previous care are checked again during movement. If a responsive patient notices increasing difficulty breathing, new pain or increasing drowsiness, the attending team needs that information immediately. The team continues to assess consciousness, breathing, bleeding and monitored measurements where available even when the patient reports no change. During a change of platform, injuries, securing arrangements and earlier interventions are checked again because movement and repositioning can add stress.
Handover and limits along the transport route
The flight ends at a care handover. The receiving team needs the initial findings, subsequent course, measures taken and their times, and particular problems during movement. A verbal handover and accompanying documentation connect this information to the patient. The next team can then identify care that needs to continue and a condition that has changed since the first report. Movement coordination considers the destination’s capabilities, personnel, equipment and available capacity. The nearest facility may be unsuitable if it cannot provide the treatment required.
Even when medical need is severe, weather, enemy air defences, insufficient capacity, technical problems or crew limitations may delay or prevent a flight. An air platform needs access to the person and the destination; part of the route may require ground or water transport to another transfer point. US Army procedures assess medical mission authorisation and aviation launch approval separately. The casualty’s actual account of condition, mobility and surroundings therefore matters: it informs both care requirements and the choice of a possible transport route.
German stages, French categories and US AE
In German usage, Forward AirMedEvac means direct forward pickup of casualties, Tactical AirMedEvac their movement within the operational theatre, and Strategic AirMedEvac movement over long distances, frequently from the theatre to Germany. The function changes what can be prepared beforehand: during forward pickup, the casualty first has to reach the platform from the dangerous situation; during tactical or strategic onward movement, a treatment facility and the flight team can prepare care and handover before departure.
France distinguishes évacuation médicale de l’avant from the point of injury or onset of illness to an operational medical unit, évacuation médicale tactique between operational medical units, and évacuation médicale stratégique from such a unit to a hospital in metropolitan France. The US Air Force uses Aeromedical Evacuation, abbreviated AE, for a system of medically supported air movement to and between treatment facilities. This includes patient preparation on the ground, medical flight crews and additional critical care transport teams. AE includes movement within a theatre and between theatres or to the home country; the term therefore does not mean only the long flight home.
MEDEVAC can also provide medically supported movement by ground or water; AirMedEvac specifies the air route. In US Army usage, CASEVAC identifies movement on nonmedical platforms which can nevertheless receive medical personnel and supplies when planned accordingly. What matters to the casualty being transported is therefore the care, positioning, monitoring and medical support actually possible on the platform being used.