Factors determining maximum inspiratory flow and maximum expiratory flow of the lung.

Response of Maximum Inspiratory Pressure and Functional Capacity to Positive End-Expiratory Pressure Device after Valvular Heart Surgery

Background: Pulmonary complications following valvular heart surgery are common and contribute to increased duration of hospital stay, rate of morbidity, and mortality. The purpose of the present study was to investigate the response of maximum inspiratory pressure and functional capacity to Positive End-Expiratory Pressure device in patients who underwent valvular hea...

Maximum static inspiratory and expiratory pressures with different lung volumes

BACKGROUND Maximum pressures developed by the respiratory muscles can indicate the health of the respiratory system, help to determine maximum respiratory flow rates, and contribute to respiratory power development. Past measurements of maximum pressures have been found to be inadequate for inclusion in some exercise models involving respiration. METHODS Maximum inspiratory and expiratory air...

Pulmonary function in obese subjects with a normal FEV1/FVC ratio.

STUDY OBJECTIVE To determine pulmonary function test (PFT) profile and respiratory muscle strength (RMS) of a group of obese individuals who did not have evidence of obstructive airway disease or other underlying diseases affecting their respiratory system. DESIGN Prospective, open. SETTING PFT laboratory, VA Medical Center. PARTICIPANTS Sixty-three consecutive obese (body mass index grea...

Maximum flow ratios at mid-vital capacity in young healthy adults.

Upper airway obstruction is usually diagnosed by visual examination of maximum expiratory and inspiratory flow-volume curves and by calculating a ratio of expiratory to inspiratory flow at 50 percent of vital capacity (mid-vital capacity flow ratio); however, reference values of this ratio have not been well established, and considerable variability exists. The purpose of this study was to exam...

A comparison of maximum inspiratory and expiratory flow in health and in lung disease.