Normal tidal volume chart11/23/2023 ![]() Residual volume (RV) is the volume of air that remains in the lungs after maximal exhalation.Expiratory reserve volume (ERV) is the volume of air that can be expired after the expiration of the tidal volume. ![]() Inspiratory reserve volume (IRV) is the maximum volume of air that can be inspired over and above the tidal volume.Tidal volume (TV) is the volume of air inspired or expired with each normal breath at rest.strongest correlation in results were for sex and age, but also height/weight/BMI and different lung function parameters."strongly dependent on the skill of the technician" (may account for 5%- 12% variation) and "the motivation of the patient".Hautmann et al in 2000 published the mean PIMAX (kPA).Is a routine procedure in many pulmonary function laboratories.Is an index of inspiratory muscle strength (Black 1969).PIMAX = maximum inspiratory mouth pressure (also termed NIF = negative inspiratory force).Difficulties in interpreting PFT's can arise from variation in effort expended as well as muscle weakness compromising an otherwise intense effort.Monitor for potentially toxic side effects of certain drugs (e.g.Monitor the efficacy of a given treatment. ![]()
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