On line determination of lung volumes by plethysmography and digital computer

This report describes a method of obtaining lung volumes on line with a minicomputer and whole body plethysmograph. The results of this approach were compared with standard methodology for a wide range of values and found to be in good agreement. This system can be readily implemented using standard hardware and laboratory techniques. Its advantages are its accuracy ,rapidity of data analysis, and retrieval; through the latter it allows for an assessment of such factors as variability of subject performance.