This reaction could prove fatal if the diver is lifted sufficiently to cause lung overexpansion. Neurological examination is recommended when there is suspicion of lung overexpansion injury. Although initially successful, the chain failed as a result of overexpansion. Barotrauma due to overexpansion of an internal gas-filled space may also be termed volutrauma. Overexpansion during the 1920s left excess inventory in the Depression era. Slight overexpansion causes a slight reduction in efficiency, but otherwise does little harm.