Tag: is a peak flow of 400 good

TheAsthmaCures Peak flow meter

Peak flow meter: Peak flow meter a small hand-held device that measures how fast air comes out of the lungs when a person exhales forcefully. This measurement is called a peak expiratory flow (PEF) and is measured in liters per minute (lpm). A person’s PEF may drop hours or even days before asthma symptoms are […]