FEV 1, FVC, peak expiratory flow and various maximal expiratory flow measures of FVC went up with air purification. Fractional exhaled nitric oxide, an airway inflammation marker, went down with ...

“We found that peak expiratory flow actually differed with changing concentrations of PM 2.5 in the area,” Cage said. On average, the students had a pre-FEV 1 /FVC ratio of 78.79% and a post ...

By Anjali Srivastava: A peak flow meter is a handy, portable device that measures how fast air leaves the lungs. It plays a vital role in asthma management by helping users track their lung ...