The importance of interaction of exhaled air with the airway surface was evaluated by
comparing the effects of different breathing maneuvers and inhaled air temperature on the
relationship between breath alcohol concentration (BRAC) and blood alcohol concentration
(BAC). Breath alcohol was measured with an infrared absorption unit. Blood and simulator
liquid alcohol concentrations were measured by gas chromatography. Breath samples were
measured after both low and high exhaled volumes and after rebreathing. Breathing …