Fig. 1From: Change in cardiac output during Trendelenburg maneuver is a reliable predictor of fluid responsiveness in patients with acute respiratory distress syndrome in the prone position under protective ventilationTrendelenburg maneuver. a Starting position of the Trendelenburg maneuver with bed angulation +13°. b Trendelenburg position with a −13° downward bed angulation. c Pressure transducers taped on the thorax at the phlebostatic reference pointBack to article page