Avoiding errors in spirometry.
Routine measurements of vital capacity, forced expired volume in one second, and forced expiratory flow are easy to make, and so are errors in these measurements. Even if the technologist observes all the rules in performing the tests, there is still a potential source of error in the machine.
D003951:Diagnostic Errors; D011786:Quality Control; D013147:Spirometry / Q000295:instrumentation* / Q000592:standards