Just a year ago I was routinely hitting 370- 380 on the peak flow meter, representing the upper end of my green zone. Well, looks like those days are over.
Though Ive been breathing pretty decent lately with no major flares, on a good day Ive only been hitting 310-320, maybe 330 on a stellar day. In fact, I haven’t been able to top 330 in over 8 months now, which is a little discouraging.
I’m not sure if this drop in my maximum peak flows numbers( personal best ) represents an overall decline in my lung function, or if it’s just that my larger airways are getting stiffer. But , in order for my peak flow numbers to have continued relevancy, I had to recalibrate my breathing zones. ( If not, Id be in the yellow zone ALL the time) My personal best is now 330 instead of 380.
Here are my new re-calculated breathing zones:
Rick over at the Respiratory Cave wrote an excellent post about peak flows. As he points out, one should never rely solely on their peak flow reading to assess their breathing status. The only reason I do peak flow measurements at all , is because I sometimes have a blunted perception of my own dyspnea and can’t always tell when I’m getting tight. The peak flow meter gives me a visual clue and provides me with an actual measurement of my lung function.