"right pleural cavity: compression of the SVC and right atrium causes obstructive shock"
"Critically injured patients may proceed straight to surgery; for stabilised trauma patients urgent CT shows pericardial tears, cardiac herniation and compressive effects. MRI can add useful functional information and assess cardiac perfusion."
"Signs of a tear include focal pericardial discontinuity, interposition of lung between the aorta and pulmonary artery, or between the heart and diaphragm, or between the right atrium and right ventricular outflow tract; signs similar to congenital absence of the pericardium. Pneumomediastinum associated with trauma, surgery or spontaneous alveolar rupture can enter the pericardial sac. Pneumopericardium is non-specific, but a large volume of unilateral pericardial gas suggests cardiac herniation and has been termed the empty pericardial sac."
"Signs of a tear include focal pericardial discontinuity, interposition of lung between the aorta and pulmonary artery, or between the heart and diaphragm, or between the right atrium and right ventricular outflow tract; signs similar to congenital absence of the pericardium. Pneumomediastinum associated with trauma, surgery or spontaneous alveolar rupture can enter the pericardial sac. Pneumopericardium is non-specific, but a large volume of unilateral pericardial gas suggests cardiac herniation and has been termed the empty pericardial sac."