International aeromedical evacuation

Evaluation of repatriation parameters: does medical history matter?

BACKGROUND

Aeromedical repatriation of patients is an expanding service due to the growing number of travelers worldwide. Of these repatriated patients, a small number require specialized transportation due to severe medical complications. We evaluated the medical in-flight records of Dutch patients with severe disease or polytrauma who were repatriated by air from 1998 to 2002 via one of the largest Dutch alarm centers. We questioned how this Dutch population of repatriated patients is demographically distributed and whether this population is a priori at high risk for acute medical complications that need specialized medical attention.

RESULTS

Seventy-seven of 115 repatriated patients were 50 years and older, of which most were male (73%). Fifty patients had no significant medical history, whereas the remaining 65 patients suffered from comorbidities such as cardiovascular disease or cancer. In patients aged 18 to 49 years, one third of all patients were repatriated due to traumatic fractures. In the older age category, the main reasons for repatriation were cardiopulmonary incidents. There was an equal distribution in the primary medical reason for repatriation as defined by need for trauma/neurological support and ventilation or circulatory support. Of note, 82% of the 65 patients who traveled with a chronic disease condition were repatriated due to worsening of this particular condition.

CONCLUSIONS

The present study shows that an aeromedical repatriation service is frequently employed by travelers with a history of chronic disease who develop medical complications. The growing number of repatriated elderly patients and/or patients with preexisting comorbidities requires development of secure pretravel risk assessment and adaptation of the medical service level in foreign countries.

The critical care air transport program

BACKGROUND

The critical care air transport team program is a component of the U.S. Air Force Aeromedical Evacuation system. A critical care air transport team consists of a critical care physician, critical care nurse, and respiratory therapist along with the supplies and equipment to operate a portable intensive care unit within a cargo aircraft.

DISCUSSION

This capability was developed to support rapidly mobile surgical teams with high capability for damage control resuscitation and limited capacity for postresuscitation care. The critical care air transport team permits rapid evacuation of stabilizing casualties to a higher level of care. The aeromedical environment presents important challenges for the delivery of critical care. All equipment must be tested for safety and effectiveness in this environment before use in flight. The team members must integrate the current standards of care with the limitation imposed by stresses of flight on their patient.

SUMMARY

The critical care air transport team capability has been used successfully in a range of settings from transport within the United States, to disaster response, to support of casualties in combat.

Clinical review: critical care transport and austere critical care

The development of modern intensive care units (ICUs) has allowed the survival of patients with advanced illness and injury, although at a cost of substantial infrastructure. Natural disasters and military operations are two common situations that can create critically ill patients in an environment that is austere or has been rendered austere. This has driven the development of two related strategies to care for these casualties. Portable ICU capability can be rapidly established in the area of need, providing relatively advanced capability but limited capacity and sustainability. The other strategy is to rapidly evacuate critically ill and injured patients following their initial stabilization. This permits medical personnel in the austere location to focus resources on a larger number of less critical patients. It also permits the most vulnerable patients to receive care in an advanced center. This strategy requires careful planning to overcome the constraints of the transport environment. The optimal strategy has not been determined, but a combination of these two approaches has been used in recent disasters and military operations and is promising. The critical care delivered in an austere setting must be integrated with a long-term plan to provide follow-on care.