Table 1.

Restrictive pattern of pulmonary function testing (PFT) in children characteristic of neuromuscular disease (NMD).

Test	PFT Findings
FEV1	↓
FEV1/FVC	Normal
FVC or VC	↓
TLC	↓
RV	↑
FRC	Normal
MIP	↓
MEP	↓
PCF	↓

FEV₁, volume of air exhaled forcefully; FVC, total volume of air forcefully expelled; VC, volume capacity; TLC, total lung capacity; RV, residual volume; FRC, functional residual capacity; MIP, maximal inspiratory pressure; MEP, maximal expiratory pressure; PCF, peak cough flow.