Thoracic trauma in multiple trauma increases mortality threefold, usually due to sepsis. Disturbances of the pulmonary vasculature are seen soon after trauma, as is increased EVLW. This can be due to 3 different mechanisms: 1. High pressure edema due to high intrathoracic pressure. Protein-poor edema. No hypervolemia, therefore no diuresis called for. 2. Hematoma: blood and dead tissue should be removed. Bronchial drainage is important. 3. Capillary permeability damage: areas of direct trauma with protein-rich interstitial edema. Can lead to ARDS. Modern ventilation techniques are helpful. No drug therapy (i.e. steroids) is proven.