1175. Traumatic asphyxia: mechanism, s/sx, Rx // Causes of subcutaneous emphysema September 23rd, 2009 by reuben in .trauma-chest Back Top Tags: card 1174. Management of flail chest, indications for ETT // Nonpenetrating ballistic injury: 2 mechanisms, key principle 1176. Localized chest wall subcutaneous air suggests what? At supraclavicular region or anterior neck? // Important complication of pneumomediastinum and usual precipitant of this complication // Physical exam sign of pneumomediastinum or pneumopericardium // Pulmonary contusion: pathophys, sx, Dx – when visible on chest xray? Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.