Review on 8884719009 Voldyne 5000 Volumetric Respiratory Device by Brandon Show

I was a 22 year old doctor in the intensive care unit and this is exactly the volumetric flask we used in the hospital. same company Looks exactly the same. I use it for breathing exercises. Just remember one thing: you're not blowing in on any pretext. You exhale all the air from your lungs and then draw it in continuously and evenly, trying to keep the ball at the highest level possible. This will make you cough. It measures tidal volume and reserve capacity, but is primarily used as a "lung trainer". However, never take anyone's opinions/instructions off the internet unless you are sure of their accuracy and qualifications. Ask your PCP/PCM/GP.