How should a peak flow meter be used to assess asthma control?

How should a peak flow meter be used to assess asthma control?

• A. Inhale quickly through the mouthpiece
• B. Exhale slowly through the nose
• C. Exhale quickly and forcefully through the mouthpiece
• D. Hold breath for 10 seconds before exhaling

Answer: (C)

peak flow meters measure the maximum speed of air you can forcefully exhale in a single breath. to get an accurate reading, take a deep, full inhale, place your lips firmly around the mouthpiece, and blow out as hard and as fast as you can in one continuous burst until your lungs are empty. this quick, forceful exhale is what the device captures as the peak expiratory flow. exhaling slowly, exhaling through the nose, or holding your breath would not produce the true peak flow and would yield misleading results. by comparing the reading to your personal best, you can monitor asthma control and notice changes that may require action.

peak flow meters measure the maximum speed of air you can forcefully exhale in a single breath. to get an accurate reading, take a deep, full inhale, place your lips firmly around the mouthpiece, and blow out as hard and as fast as you can in one continuous burst until your lungs are empty. this quick, forceful exhale is what the device captures as the peak expiratory flow. exhaling slowly, exhaling through the nose, or holding your breath would not produce the true peak flow and would yield misleading results. by comparing the reading to your personal best, you can monitor asthma control and notice changes that may require action.