<prompt> Characteric finding in restrictive lung disease is:Decreased FEV1Increased TLCNormal FEV1VCAll  <response>: Ans. c Normal FEV, Vc. Ref. Harrison, Principles of Medicine, 18th1448OBSTRUCTIVE PATTERNRESTRICTIVE PATTERN Al 2005EXTRAPARENCHYMAL PATTERN INSPIRATORY DYSFUNCTIONDecreased expiratory flow rates hallmarkNormal forced expiratory flow ratesExpiratory flow rates not affectedDecreased FEV1VC in fully established disease-FEVlFVC variableTLC normal or increased Minor changeDecreased lung violume TLC and VCTLC not predictableIncreased residual volume strikingDecreased residual volumeIncreased RVIncresed ratio of RVTLC--Decreased VC-Decreased MIP 