Figure 2.

Modified airway manikin. Airway manikin (AirSim Advance X, TruCorp Ltd., Lurgan, Northern Ireland) with a flexible tube ending in the esophagus just below the laryngeal level. This tube is connected to a 1.5 L bag filled with a brown opaque fluid simulating gastric content, which is placed on a drip stand, 100 cm above head level. Both lungs of the manikin were attached to suction bags that could collect regurgitated fluid. (Note: Photograph is taken from a test set-up before actual study conduct.)