The sudden impact on the thorax causes an increase in intrathoracic pressure. In order for<unk>  to occur, a Valsalva maneuver is required when the<unk>  force is applied. Exhalation against the closed glottis along with the<unk>  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.
Traumatic asphyxia
Neonatal stroke
Positional asphyxia
Closed-head injury
Polytrauma
Neonatal meningitis
Penetrating head injury
Neonatal sepsis