A peak flow meter is a user-friendly, ... Red zone indicates less than 50% of normal peak flow and warns about an upcoming asthma attack and the need for immediate medical intervention.

Medically reviewed by Daniel More, MD A peak flow meter is used to measure your peak expiratory flow rate (PEFR). PEFR describes how quickly your lungs expel air during a forceful exhalation after ...

What a peak flow meter can tell you. Peak flow meters are inexpensive (the average price is around $15 to $20), handheld, and easy to use. You simply blow as hard as you can into the device and it ...

A peak flow meter is sensitive enough to detect these changes in your lungs for hours or ... The yellow zone measures 50% to 79% of your personal peak flow. Red. A red zone reading measures less ...

Yellow zone: 50 to 80 percent of your usual flow rate : Your airways may be starting to narrow. Talk to your doctor about how to handle yellow zone results. Red zone: less than 50 percent of your ...

Make sure that you always follow your “yellow” plan if you fall into this zone. Hopefully this will ensure that you never reach the red zone. If your asthma is so bad that you can barely record a peak ...

OMRON light Personal Peak Flow Meter is used for accurate monitoring of Peak Expiratory Flow in L/min. The PFM20 enables an easy, user-friendly therapy management for doctor and patient similarly.

By Anjali Srivastava: A peak flow meter is a handy, portable device that measures how fast air leaves the lungs. It plays a vital role in asthma management by helping users track their lung ...

In this article, we take a closer look at the peak expiratory flow rate (PEFR) – the maximum flow rate generated during a forceful exhalation. What is a peak-flow meter? A peak-flow meter helps you to ...

Peak flow meters are generally not very useful in controlling asthma. Most children can be controlled with symptoms alone. Children who are able to understand when they're having trouble breathing ...