Subject(s)

Emergency Treatment/methods , Head Injuries, Closed/therapy , Respiration, Artificial/methods , Accidental Falls , Airway Resistance , Education, Continuing , Emergency Medical Technicians , Equipment Failure , Humans , Male , Middle Aged , Monitoring, Physiologic , Positive-Pressure Respiration , Respiration, Artificial/instrumentation , Respiratory Physiological Phenomena , Ventilators, Mechanical