Final answer:
The correct use of a peak flow meter involves moving the indicator to the bottom of the scale before each use, blowing out as quickly and forcefully as possible, and doing so while sitting or standing up.
Step-by-step explanation:
The statement that indicates the teaching on how to use a peak flow meter was effective is: I should move the indicator to the bottom of the number scale before using the meter. Moving the indicator to the bottom of the scale ensures an accurate reading starting from zero each time the peak flow meter is used. Blowing out as quickly and forcefully as possible, not slowly, is the correct method for using a peak flow meter. It is also essential to perform the test while standing or sitting up, not lying down, to ensure optimal lung function during the test. Performing multiple blows in a single test is not recommended, as only the highest of three close readings should be recorded.