Background Chronic obstructive pulmonary disease (COPD) is the fourth most common cause of death in the world, for which smoking is a common cause. It is preferable to diagnose COPD at an earlier stage and to assess its progression so that mortality and morbidity of the disease could be reduced. Hence, we conducted this study to assess parameters of body plethysmography in Indian population whe...

Background: We measured Functional Residual Capacity (FRC) of the lungs with three methods in healthy volunteers. The three techniques included a CO2 partial rebreathing technique, nitrogen washout technique, and the reference technique for ambulatory patients, body plethysmography. Materials and Methods: After granting consent to an IRB-approved protocol, each of the 20 healthy volunteers part...

The incidence of asthma and obesity is constantly increasing. It commonly acknowledged that can make more severe poorly controlled. Conventional spirometry, despite being a “gold standard” in diagnostics lung diseases, cannot provide information on residual volume bronchial resistance, which be key to understanding the mechanics spirometric deviations found asthma-obesity phenotype. aim. To eva...

Nearly fifty years ago, Arthur B. DuBois, Julius H. Comroe Jr., and their colleagues published two papers on the use of body plethysmography to measure lung volume and airway resistance. These two articles in the JCI are almost the most-cited doublet in the Journal's entire archive. Remarkably, the methods described then are still in use today in clinical pulmonary function laboratories. Though...