label: Injury Asphyxation
label_lc: injury asphyxation
description: "Acute compression of the thoracic cavity, causing  increased intrathoracic pressure and the backflow of blood from the right atrium and superior vena cava into the brachiocephalic and jugular veins, with resulting stagnation of blood flow and subsequent localized blood-oxygen desaturation in the head and neck."