W94.3 - Exposure to rapid changes in air pressure during descent W94 - Exposure to high and low air pressure and changes in air pressure W94.3 - Exposure to rapid changes in air pressure during descent W94.31 - Exposure to sudden change in air pressure in aircraft during descent W94.32 - Exposure to high air pressure from rapid descent in water W94.39 - Exposure to other rapid changes in air pressure during descent