- While standard PFTs require adjustment for SCI pts, forced vital capacity (FVC)and Forced Expiratory Volume in the first second (FEV1) and negative inspiratory force [NIF]) can be assessed longitudinally at all levels and neurologic completeness of SCI often showing Restrictive pattern
- SCI patients show increase in vital capacity (VC) when changing from a seated to supine position
- The main lung volume abnormality after incomplete cervical or thoracic SCI is a moderate reduction in ERV
- Injury below C5 shows maximal expiratory force is impaired more than maximal inspiratory pressure
Conditions for referral
- Patients with electrophrenic pacers
- Home ventilation and/or tracheostomy cuff management
- When Vital Capactiy <1L, ABG shows: PO2<50 or PCO2>50, or FVC<15cc/kg
- phrenic nerve transplants