You are correct. Perthe syndrome, or traumatic asphyxia, is a clinical syndrome characterized by cervicofacial cyanosis, petechial hemorrhages on the upper chest and face, and massive hemorrhage in the subconjunctival and periorbital areas. It results from severe, sudden, and transient compression of the chest or upper abdomen w/ complete or partial cessation of respiration for varying periods of time. Tx is rapid decompression of the chest. It is usually harmless; however, in <10% of pts, a prolonged thoracic compression could lead to cerebral anoxia and neurological sequelae.