Background: Cannabis is the most widely used illegal drug worldwide. Long-term use of cannabis is known to cause chronic bronchitis and airflow obstruction, but the prevalence of macroscopic emphysema ...

In case of children, pulmonary function tests ... The imaging assessed regional ventilation (oxygen flow), flow-volume loop correlation metric (FVL-CM), quantified perfusion (blood flow ...

What are pulmonary function tests? Pulmonary function tests (PFTs) are tests that show how well your lungs are working. The tests measure lung volume, capacity, rates of flow, and gas exchange. This ...

Abstract: Pulmonary function testing has been used as a primary tool in assessing ... of an automated system which merges the acoustic sound indicators with the flow-volume loops data which provide ...

Full lung function testing was arranged and the flow–volume loop was immediately flagged as abnormal; demonstrating a reproducible notch in the early forced expiratory phase of the manoeuvre (figure ...

ABSTRACT: Background: Some patients present clinical features of both asthma and chronic obstructive pulmonary disease (COPD), which has ... score, COPD assessment test (CAT) score, spirometric ...

[8] [9] [10] In pulmonary function test (PFT), flow volume loop (FVL) is the most valuable one for clinical application. The subjects were instructed to inhale and exhale with maximum strength. The ...

There are many different types of pulmonary function ... spirometry test involves the use of a specialized machine called a spirometer that is able to detect the flow rate and volume of air ...

Pulmonary function testing is a common diagnostic procedure used to evaluate ... Spirometry measures the volume of exhaled air as a function of time. The flow volume loop test displays the spirometry ...

FEV1 is one of the pulmonary function tests (PFTs) done to evaluate lung function. One of the distinguishing features of FEV1 is that it is time-dependent. A similar measurement—forced vital capacity ...