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Hi - I have yet to have a spirometry but I was under the impression that it was just as simple as 'blowing in a tube'.
Now told it will take an hour since the exhaling part first, then an inhalant is given (never, ever had an inhalant before) and wait 20 minutes until another reading is taken. for comparison.
Could anyone tell me the purpose of being given an inhalent is please?
I have googled all this, but am finding it all very confusing.
thanks, hope this makes sense
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