MD4Lungs.com - Yatin J. Patel, MD MBA

Sneeze & Snooze Clinic

Yatin J. Patel, MD MBA
Barb Chupp-Grove, NP-C
2417 S. Berkshire Drive
Goshen, IN 46526

Phone 574.534.9911 Fax 574.534.6915

Peak Flow:

Peak expiratory flow (PEF) is a measurement of your ability to push air out of your lungs. You can use a simple device, called a peak flow meter, to monitor your own "lung power." An important asthma management tool.

By keeping a regular record of your peak flow results, you can help your doctor make important decisions about your medication and other elements of your treatment plan.

Peak flow monitoring is important because it:

Helps you decide when to seek emergency treatment

Allows you to detect the early stages of bronchoconstriction, so you can take steps to remedy the problem

Gives you an accurate picture of how your condition changes over a 24-hour period; this enables your doctor to determine when medication should be taken.

Helps you see the difference between bronchoconstriction and other causes of breathing difficulty, such as hyperventilation

Allows you to identify the allergens and other irritants and triggers that cause your asthma symptoms

Helps you communicate more effectively with your doctor so he or she can provide proper guidance

Shows whether your asthma symptoms have stabilized, improved, or worsened

There are several different kinds of peak flow meters, but all have the some basic parts: a mouthpiece, a main tube, and a scale with measurements marked on it.

Using a peak flow meter:

Even young children can learn how to use a peak flow meter. Follow these easy steps.

1. Place the indicator at the base of the numbered scale.

2. Sit up straight, or stand up.

3. Take a deep breath.

4. Close your lips around the mouthpiece (but keep your tongue clear of the opening).

5. Blow out as hard and as fast as you can.

6. Write down the number that shows on the scale.

7. Repeat these steps 2 more times.

8. Write down the highest of the 3 numbers in your peak flow diary.

9. Clean the peak flow meter after each use to keep it working accurately.

Every person will have a different "ideal" peak flow number.

Your personal ideal number is the highest number that you can reach during a 2-week period when you're well and are not experiencing any asthma symptoms.

Here's how to find yours:

Take peak flow readings when you wake up and before you go to steep.

Take additional readings before and after you take your inhaled medication.

Keep track of the results so you can discuss them with your doctor.

The 3-zone system Peak flow numbers are divided into zones that help you decide what action to take. Each zone is based on your ideal peak flow number.

Red zone: Below 50% of your ideal number This signals a medical olert. Immediately take your short-acting bronchodilator, and then contact your doctor.

Yellow zone: 50% to 80% of your ideal number The signal for caution. You may be experiencing asthma symptoms that require an increase or change in medication. Follow your asthma management plan, or call, your doctor to find out how to get your asthma back under control.

Green zone. 80% to 100% of your ideal number This signals all clear. Continue to take your medications as prescribed.

NOTE.- Peak flows can vary widely from individual to individual and can also vary among different peak flow meters. If you have questions regarding your peak flow, consult your doctor.

Keeping track of your results:

A daily peak flow diary is an important part of your total asthma management plan, because the information it provides helps you and your doctor. Once you have determined your personal idea[ reading and the "zones" that apply, you'll have a valuable toot for staying in control of your health.