title: "HOOAH!" A case of pneumomediastinum in the military training environment; Hamman's sign 71 years later.
abstract: A previously healthy 20-year-old male trainee developed chest pain, shortness of breath, and neck pain after repeatedly shouting "Hooah!" during a motivational squad competition. He was found to have developed a pneumomediastinum with soft tissue crepitus of the neck. He had an uneventful recovery. Unique to the military training environment, vigorous shouting, including "Hooah!" as a motivational stimulus, can have barotraumatic consequences. The term "spontaneous" as applied to a pneumomediastinum diagnosis is examined and the auscultatory finding of "Hamman's sign" is reviewed.
authors: 3rd MDW/MDOS, 5955 Zeamer Avenue, Elmendorf AFB, AK 99506, USA.
authors: Ronald
authors: R
authors: Jones
authors: Leon
authors: L
authors: Kundrotas
mesh_terms: D001469:Barotrauma / Q000150:complications*; D003163:Competitive Behavior; D004417:Dyspnea / Q000209:etiology; D006347:Heart Sounds; D006801:Humans; D008297:Male; D008478:Mediastinal Emphysema / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy; D008482:Mediastinum / Q000293:injuries*; D008889:Military Personnel; D014057:Tomography, X-Ray Computed; D055815:Young Adult