Vital capacity following traumatic brain injury

This study was designed to describe lung volume subdivisions in individuals with traumatic brain injury. Records were reviewed for 114 consecutive ref errals for motor speech evaluations in a community re-entry residential reh abilitation programme. Obtained measures were vital capacity, inspiratory c apacity, and expiratory reserve volume at the time of evaluation. Seventy-n ine per cent of subjects evidenced at least moderate deficits in expiratory reserve volume, with 60% evidencing severe deficits. Inspiratory capacity was the least affected, with 61% of subjects evidencing values within norma l limits. Possible contributors to reduced expiratory reserve volumes inclu de expiratory muscle weakness due to physical inactivity, inability to volu ntarily perform the task, or perceived effort.