Anatomical dead space measured by -
Bohler's method
Xenon dilution technique
Spirometry
Single breath nitrogen test
Ans. D. Single breath nitrogen test(Ref: Ganong 25/e p633, 634, 24/e p633, 634)Anatomical dead space - Calculation:By Bohr's equation - Uses single breath nitrogen inhalation technique.Xenon/Helium dilution technique:Used to measure functional residual capacity of lung.Spirometry:Cannot measure residual or dead space volumes.