People with TBI are provided with supplemental oxygen and may need mechanical ventilation.[20] Employment of certain measures such as Positive end-expiratory pressure (PEEP) and ventilation at higher-than-normal pressures may be helpful in maintaining adequate oxygenation.[3] However, such measures can also increase leakage of air through a tear, and can stress the sutures in a tear that has been surgically repaired; therefore the lowest possible airway pressures that still maintain oxygenation are typically used.[3] Mechanical ventilation can also cause pulmonary barotrauma when high pressure is required to ventilate the lungs.[3] Techniques such as pulmonary toilet (removal of secretions), fluid management, and treatment of pneumonia are employed to improve pulmonary compliance (the elasticity of the lungs).[26]