What is peak flow in lungs?

Peak flow is a simple measurement of how quickly you can blow air out of your lungs. It’s often used to help diagnose and monitor asthma. Credit: A peak flow test involves blowing as hard as you can into a small handheld device called a peak flow meter.

What does a peak flow reading of 400 mean?

A reading of 400- 600 l/min is considered normal. An individual suffering with asthma would have a lower reading of 200-400 l/min. Exercise can increase an individual’s peak flow reading. This is because exercise makes the lungs stronger and this increases the lungs’ ability to take in oxygen.

What is normal peak expiratory flow rate?

In men, readings up to 100 L/min lower than predicted are within normal limits. For women, the equivalent figure is 85 L/min.

What peak flow indicates asthma?

80 to 100 percent of your usual or “normal” peak flow rate signals all clear. A reading in this zone means that your asthma is under reasonably good control.

What should I do if my peak flow is low?

If your airways are tight and inflamed, your peak flow score will be lower than normal. This could be a sign your asthma is getting worse. See your GP if: you’re having symptoms, or need to use your reliever inhaler three or more times a week, even if your peak flow scores are normal.

What is a normal peak flow reading for a woman?

between around 400 and 700 litres per minute
Normal adult peak flow scores range between around 400 and 700 litres per minute, although scores in older women can be lower and still be normal. The most important thing is whether your score is normal for you.

What peak flow reading indicates asthma?

Your peak flow rate is 50% to 80% of your personal best, an indication that your asthma is getting worse.

What is a good peak flow number?

Peak expiratory flow (PEF) is measured in litres per minute. Normal adult peak flow scores range between around 400 and 700 litres per minute, although scores in older women can be lower and still be normal. The most important thing is whether your score is normal for you.

What should my peak flow reading be?