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 ...

PEFR stands for peak expiratory flow rate. It's a test that measures how fast you can exhale. Learn more about PEFR, why your doctor may suggest this test, how to prepare, what to expect, and ...

A peak flow meter is a handheld device that measures airflow rate and can help those with respiratory conditions like asthma monitor their condition.

Because patients in the pharmaceutical care program group were called monthly to obtain a current peak flow test result, we were concerned that these calls alone might constitute an intervention ...

I have contemplated this issue on a personal level this year. My son recently completed his first T-ball season which began in a cooler-than-usual spring. He is an athletic 6-year-old with seasonal ...