Fig 2.

(A) Lung ultrasound demonstrates area of consolidation prior to placing the patient in the prone position. Consolidation in a nonaerated lung, which results in a significant shunt. (B) Lung ultrasound after placing the patient in the prone position demonstrates significant “B lines” (arrows) consistent with acute respiratory distress syndrome, however, with improved aeration. Clinically, the patient's oxygenation improved as well after proning. (C) Linear probe demonstrates a thickened pleural line (arrows).