Pulmonary function tests (PFTs) traditionally used in clinical practice do not accurately predict exercise intolerance in patients with chronic obstructive pulmonary disease (COPD). The aim of this study was to assess whether the nitrogen single-breath washout (N2SBW) test explains exercise intolerance and poor quality of life in stable COPD patients. This cross-sectional study included 31 pati...

Obesity and asthma are major global health concerns, particularly in industrialized nations. has been shown to have detrimental effects on the respiratory system lung function owing metabolic issues immunological consequences. Research indicated that obese patients with (atopic or T2-high non-atopic T2-low) diminished terms of functional residual capacity (FRC), volume (RV), expiratory reserve ...

1. Forced exhalations performed from volumes below total lung capacity, so-called partial expiratory flow-volume curves, are suggested to be more sensitive in detecting airways bronchoconstriction than maximal expiratory flow-volume curves begun at total lung capacity. 2. In eight healthy men both maximal and partial expiratory flow-volume curves were measured where breath was held at total lun...

[Purpose] The aim of this study was to clarify physical parameters affecting the tidal volume during expiratory abdominal compression in patients with prolonged tracheostomy mechanical ventilation. [Methods] Eighteen patients with prolonged mechanical ventilation were included in this study. Expiratory abdominal compression was performed on patients lying in a supine position. The abdomen above...

Adolescent idiopathic kyphosis causes not only spinal deformities but also rib cage abnormalities that lead to abnormal residual volume and pulmonary capacity revealed in pulmonary function testing (PFT). The objective of this study was to analyze the impact of a physical activity program on respiratory function in surgical patients with kyphosis. From October 2006 to October 2007, a total of 3...

OBJECTIVE To investigate the influence of morbid obesity on the lung age in women and to correlate with body mass, body mass index (BMI), and ventilatory variables. METHODS This was a cross-sectional study with 72 morbidly obese women and a control group consisting of 37 normal weight women. The subjects performed a pulmonary function test to determine lung age, and the results were correlate...

Ten patients with stable chronic obstructive pulmonary disease (COPD) and hypercapnic respiratory failure were randomly submitted to intermittent negative pressure ventilation (INPV) 6 h per day for 5 consecutive days by either a cuirass or pneumo wrap ventilator. The effects were assessed by measurements of spirometry, blood gases, maximal inspiratory (MIP) and expiratory (MEP) pressures, 12 m...

The inexpensive nature of the peak flow rate (PFR) makes it a suitable test of ventilatory function for use in some parts of Africa, where medical facilities are still poor. In order to establish standard values for PFR in Nigeria, anthropometric measurements, lung volumes, and PFR were obtained from 142 men and 88 women, all of whom were healthy Nigerians. The mean values of PFR were 482-1 1/m...

BACKGROUND Vital Capacity (VC) is defined as a change in volume of lung after maximal inspiration followed by maximal expiration is called Vital Capacity of lungs. It is the sum of tidal volume, inspiratory reserve volume .and expiratory reserve volume. Vital capacity of normal adults ranges between 3 to 5 litres. A number of physiological factors like age, gender, height and ethnicity effect l...