A peak expiratory flow rate (PEFR) measures how effectively you exhale. Also called a peak flow meter, this handheld device helps you document the amount of air and the speed at which you can ...

Many of us take our ability to breathe for granted, but if you have chronic lung disease or other respiratory issues, breathing can become a serious challenge. It’s important for those with ...

Please provide your email address to receive an email when new articles are posted on . Patients may have difficulty completing bronchodilator response testing. Patients with severe asthma may still ...