In Latin America, there is a preponderance of prehospital trauma deaths. However, scarce resources mandate that any improvements in prehospital medical care must be cost-effective. This study sought to evaluate the costeffectiveness of several approaches to improving training for personnel in three ambulance services in Mexico.

In Monterrey, training was augmented with PreHospital Trauma Life Support (PHTLS) at a cost of [US]$150 per medic trained. In San Pedro, training was augmented with Basic Trauma Life Support (BTLS), Advanced Cardiac Life Support (ACLS), and a locally designed airway management course, at a cost of $400 per medic. Process and outcome of trauma care were assessed before and after the training of these medics and at a control site.

The training was effective for both intervention services, with increases in basic airway maneuvers for patients in respiratory distress in Monterrey (16% before versus 39% after) and San Pedro (14% versus 64%). The role of endotrachal intubation for patients with respiratory distress increased only in San Pedro (5% versus 46%), in which the most intensive Advanced Life Support (ALS) training had been provided. However, mortality decreased only in Monterrey, where it had been the highest (8.2% before versus 4.7% after) and where the simplest and lowest cost interventions were implemented. There was no change in process or outcome in the control site.

This study highlights the importance of assuring uniform, basic training for all prehospital providers. This is a more cost-effective approach than is higher-cost ALS training for improving prehospital trauma care in environments such as Latin America.