A peak flow meter measures how well air flows out of your lungs. A low reading usually means a sign of asthma. Watch how to properly use a peak flow meter.
This video is an excerpt from the DVD Living With Asthma: A Guide to Controlling Your Asthma produced by St. Louis Children's Hospital.
Your doctor or nurse, but not a RRT because that is not a position on "Grey's Anatomy".
505mcasias 1 year ago