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 ...

Water flow levels of San Juan and Animas rivers rise rapidly in New Mexico By David Albright Herald Staff Writer Thursday, Mar 16, 2023 5:21 PM Updated Wednesday, Apr. 5, 2023 4:56 PM ...