Conversion Between Plethysmograph and Perturbational Airways Resistance Measurements

Equations were developed for airway pressure-flow characteristics which were then used to illustrate differences between airflow perturbation device measurements and body plethysmographic airways resistance measurements. The general conclusions indicate that perturbational resistances may be able to be reformulated as plethysmographic resistances, yielding information where the body plethysmograph itself is not well suited.