Nurses who are asked to do Spirometry but know absolutely nothing about it.
Doctors too.
Had my boy at the docs a few years ago with a chest infection. I took him instead of his mum as the same doctor had tested him with a peak flow meter and decided he had asthma and prescribed inhalers etc.
I know he does not have asthma as I tested him myself. Anyway , Doctor performs a peak flow in my presence then tells me it's very low for his age . I asked , in his opinion what it should be , what's the predicted for his age? He then says there are no predicted sets for children !
Good grief, Deary me.
Yes there are predicted sets for kids and I had to show him where to find them.
So , my boy doesn't have Asthma :greengrin
Scraping the barrel now for pet peeves :greengrin