Quest Lung Performance Peak Flow Meter


Product Description

About your Peak Flow Meter: A peak flow meter is a handheld device that measures how well air moves out of the lungs. It checks how fast air leaves the lungs when you blow forcefully and you fully inhale. Keeping track of peak expiratory flow helps you know if your respiratory symptoms are worsening or not. This meter was designed to make following your respiratory treatment plan easy. Your health care provider will se the color zone indicators to your personal zones based on your personal best peak flow rate value. (The best peak flow value you can achieve on a good day when your symptoms are under control). The AsthmaMD peak flow meter is a single patient use device to measure a patients’s peak expiratory flow rate in liters/minutes. this measurement is helpful in managing respiratory conditions such as asthma. The device is intended for use by patients requiring the measurement of peak expiratory flow rates. We have provided a free downloadable tracking App for accurate monitoring of your asthma. However, if you’re not able to access AsthmaMD app, we have provided a convenient paper log.


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  • STRENGTHEN your respiratory muscles with this lung exerciser. Works both your inspiration and expiration muscles and helps increase your level of activity and exercise. Very effective in asthma and building stamina.
  • Single Patient use device that measures how fast air leaves the lungs when you blow forcefully after fully inhale. Keep track to help know if your respiratory symptoms are worsening or not
  • Perfect for Athletes and Exercise, oxygen users and asthma. Dual flow range accurately measures for both adults & children. Instant readings track changes in air flow for detection of asthmatic issues
  • AsthmaMD App: We proved a Free app for accurate monitoring of your asthma. Manually enter the highest of your 3 readings. You can email your log to yourself or your doctor.
  • Created by a Doctor for Better Asthma Control. Includes Full Range Peak Flow Meter, Instructions, Paper Asthma Log, and Free Download Tracking App. Easy to use, clean, carry and store.

How do I prepare my Peak Flow Meter for use?

1. Position your peak flow meter so that the mouthpiece faces towards you and the “hinged” handle faces downward. (See Image 1)

2. Pull down the handle until it stops, forming a “T” shape. (See Image 3)

3. Hold the device by the handle. (See Image 5)

4. Your peak flow meter has an indicator that moves away from you when you blow into the mouthpiece. This indicator, along with the corresponding number, indicates your peak expiratory ­flow (PEF). Before you start, set the indicator at its lowest setting: the number closest to the mouthpiece (60). (See Image 2)

5. A separate area with 2 slidable arrows (green/yellow and yellow/red) marks your respiratory peak ­flow zone.

this green-yellow red monitoring system helps you determine when quick- relief medicine or emergency attention is needed. Your physician or other healthcare provider can help determine your individual readings. (See Image 4) It is important to know the zones:

Green Zone: When your peak flow is 80% to 100%, you can do normal activities. Yellow Zone: When your peak flow is 50% to 80%, use caution in your activities. Red Zone: When your peak ­flow is less than 50%, seek immediate medical help.

6. Slide the green/yellow respiratory peak zone arrow to your individual best reading determined by your doctor.

7. Set the yellow/red respiratory peak zone arrow to 50% less than your individual best reading.

How do I use my Peak Flow Meter?

8. Before you start, stand or sit up straight.

9. Breathe in as deeply as you can, filling the lungs completely.

10. Open your mouth and place your mouthpiece into it, forming a tight seal with your lips. Do not block the mouthpiece with your tongue. (See Image 6)

11. As hard and as quickly as possible, blow the air out forcefully. Avoid spitting and coughing when you blow to help prevent false high readings.

12. When you are finished, take the meter out of your mouth and read the number where the indicator stops. This is your peak ­flow level, measured in Liters Per Minute (LPM).

13. Repeat steps 10-12 two more times (for a total of 3 readings). It may be necessary to rest between readings.

14. In the Daily Record Chart, record the highest of the readings– your peak expiratory ­flow (PEF)– in the column under the date and time of day (AM or PM).

15. Simply place an “o” (your reading before medication) and an “x” (your reading after medication) in the appropriate box corresponding to the LPM values you achieve, depending on when and how often your physician asks you to take a reading. You can begin to create a daily trend graph by connecting the o’s and the x’s with a line.

16. Record your respiratory symptoms, signs, triggers, and medication use in the Additional Notes section of the journal, and share this information with your doctor.

Athletes, Exercise, oxygen users asthma, sleep apnea, CPAP, lung health, apnea hypopnea

How to Sanitize your Peak Flow Meter

Clean at least once every two weeks by hand washing with warm water and mild liquid soap. Rinse thoroughly and air dry completely prior to use. Do not boil the Quest AsthmaMD Peak Flow Meter. Optimal Storage Conditions: store meter at room temperature. Relative Humidity: 30% – 70%.