Abstract
"Post-traumatic pneumonia" is a loose term which has been used to describe pneumonia following chest injury, pneumonia following trauma to the body generally,1 and pneumonia complicating penetrating chest wounds.2 The phrase post-traumatic pneumonia is used in this paper to indicate the types of pneumonia which follow trauma to the chest. Cases of penetrating wounds are not included because pneumonitis in such cases is usually due to direct contamination. This report is based on observations made on 73 adult patients with post-traumatic pneumonia treated in this hospital. Every patient had an acute febrile illness with signs and symptoms of pneumonia confirmed by roentgenograms. Patients who were unconscious or who received a general anesthetic are not included in this study. Patients who had emesis were excluded, as were patients with possible aspiration or hypostatic pneumonia. All patients in whom pneumonia developed one week subsequent to their injury were ambulatory, and