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The Maximum Breathing Capacity - Direct versus Ventilographic Methods.
James RH; Grover RW
NIOSH 1969 Mar:12 pages
Study of the ventilographic mechanism used to measures Maximum Breathing Capacity during gross spirometry reveals an error in measurement attributed to loss of recorded volume per excursion of the ventilographic pen, due to mechanical slippage in the mechanism. It is suggested that all investigators should calibrate their 13.5 liter Collins respirometers to determine if the degree of error is significant in each case.
NIOSH-Author; Analytical-methods; Respiratory-function-tests;
NIOSH, Cincinnati, Ohio, No. TR-65, 12 pages, 4 references
Page last reviewed: January 14, 2022
Content source: National Institute for Occupational Safety and Health Education and Information Division