Traumatic asphyxia

Traumatic asphyxia, or Perthes's syndrome, is a medical emergency caused by an intense compression of the thoracic cavity, causing venous back-flow from the right side of the heart into the veins of the neck and the brain.[1]

Traumatic asphyxia
SpecialtyEmergency medicine 

Signs and symptoms

Traumatic asphyxia is characterized by cyanosis in the upper extremities, neck, and head as well as petechiae in the conjunctiva. Patients can also display jugular venous distention and facial edema.[2] Associated injuries include pulmonary contusion, myocardial contusion, hemo/pneumothorax, and broken ribs.[3][4]

Causes

Traumatic asphyxia occurs when a powerful compressive force is applied to the thoracic cavity. This is most often seen in motor vehicle accidents, as well as industrial and farming accidents. However, it can be present anytime a significant pressure is applied to the thorax.

Pathophysiology

The sudden impact on the thorax causes an increase in intrathoracic pressure.[3] In order for traumatic asphyxia to occur, a Valsalva maneuver is required when the traumatic force is applied.[5] Exhalation against the closed glottis along with the traumatic event causes air that cannot escape from the thoracic cavity. Instead, the air causes increased venous back-pressure, which is transferred back to the heart through the right atrium, to the superior vena cava and to the head and neck veins and capillaries.[3]

Diagnosis

Patients are seen with a cyanotic discoloration of the shoulder skin and neck and face, jugular distention, bulging of the eyeballs, and swelling of the tongue and lips. The latter two are resultants of edema, caused by excessive blood accumulating the veins of the head and neck and venous stasis.

Prognosis

For individuals who survive the initial crush injury, survival rates are high for traumatic asphyxia.[3][5][6]

gollark: Somewhat, which is why I did not say it unqualified as I might have.
gollark: Quality on that is apparently variable however.
gollark: The "international baccalaureate", an alternative post-16 curriculum some UK schools use, actually *does* include "theory of knowledge".
gollark: I was going to say "I think it's more that people are stupid than that society is doing it" but really I have no idea. I guess you could look at history.
gollark: Alternatively, we somehow train everyone in dealing with cognitive biases, if that's actually possible?

See also

References
  1. Marx, John (2013). Rosen's Emergency Medicine - Concepts and Clinical Practice. Philadelphia: Saunders. p. 435. ISBN 978-1455706051.
  2. Aehlert, Barbara J. (2010). Paramedic Practice Today: Above and Beyond. p. 472. ISBN 978-0-323-08537-3.
  3. Eken, Cenker; Yıgıt, Ozlem (2009). "Traumatic asphyxia: A rare syndrome in trauma patients". International Journal of Emergency Medicine. 2 (4): 255–6. doi:10.1007/s12245-009-0115-x. PMC 2840592. PMID 20436897.
  4. Lee, Ming-Chung; Wong, Sing-Sieng; Chu, Jaw-Ji; Chang, Jen-Ping; Lin, Pyng-Jing; Shieh, Ming-Jang; Chang, Chau-Hsiung (1991). "Traumatic asphyxia". The Annals of Thoracic Surgery. 51 (1): 86–8. doi:10.1016/0003-4975(91)90456-Z. PMID 1985583.
  5. Barakat, M; Belkhadir, Z.H; Belkrezia, R; Faroudy, M; Ababou, A; Lazreq, C; Sbihi, A (2004). "Syndrome d'asphyxie traumatique ou syndrome de Perthes. À propos de six cas" [Traumatic asphyxia or Perthe's syndrome. Six cas reports]. Annales Françaises d'Anesthésie et de Réanimation (in French). 23 (1): 59–62. doi:10.1016/j.annfar.2003.10.011. PMID 14980325.
  6. Bledsoe, Bryan E.; Berkeley, Ross. P.; Markus, Troy (2010). "Know the Signs and Symptoms of Traumatic Asphyxia". JEMS.
Classification
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