Medically reviewed by Daniel More, MD A peak flow meter is used to measure your peak expiratory flow rate (PEFR). PEFR describes how quickly your lungs expel air during a forceful exhalation after you ...

A peak flow meter is a device that measures how well your lungs expel air. The device is a valuable tool for people with a respiratory condition like asthma or COPD, because it helps track the ...

Billions of people around the world are using internet-connected medical devices to monitor their health, but could be putting themselves at risk of hackers using their data for unhealthy reasons, ...