Functional Residual volume can be measured by all except: (A) Helium dilution method, (B) Spirometer, (C) N2 washout method, (D) Body plethysmography
Answer is B. All volume & capacities are measured by spirometer, except RV, CV, FRC & TLC which are measured by
a) N2 Washout method
b) Helium dilution method
c) Body Plethysmoglaphy (Best method)