What is the normative data for peak flow?
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.
What do peak flow readings mean?
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 is the normal PEF value?
approximately 300-350 L/min
Normal value of PEF in an adult is approximately 300-350 L/min, i.e. 5-6 L/s (e.g. in 40-year-old man of 170 cm height it is approximately 370±108 L/min resp.
What does a peak flow reading of 400 mean?
The taller a person is the higher their peak flow. The highest peak flow reading for an individual occurs between the age of 30-40 years. 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.
What is the purpose of a peak flow meter?
A peak flow meter is a portable, inexpensive, hand-held device that measures your ability to push air out of your lungs. Air flow is measured by the amount of air that you can blow out in one “fast blast.” Peak flow meters come in two ranges to measure the air pushed out of your lungs.
How does a peak flow meter work?
A peak flow meter is a portable, easy-to-use device that measures how well your lungs are able to expel air. By blowing a quick blast of air through a mouthpiece on one end, the peak flow meter can measure the force of air in liters per minute and give you a reading on a built-in numbered scale.
What does a peak flow meter measure?
Peak flow measurement is a quick test to measure air flowing out of the lungs. The measurement is also called the peak expiratory flow rate (PEFR) or the peak expiratory flow (PEF).
What factors affect peak flow?
It is well known that age, height and weight are the main factors which affect the Peak Expiratory Flow Rate (PEFR), the Forced Expiratory Volume in the first second (FEV1) and the Forced Vital Capacity (FVC) [4].
How does a peak flow meter measure air flow?
A peak flow meter is a portable, inexpensive, hand-held device used to measure how air flows from your lungs in one “fast blast.” In other words, the meter measures your ability to push air out of your lungs. Peak flow meters come in two ranges to measure the air pushed out of your lungs.
What should a normal peak flow score be?
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.
When do you do peak expiratory flow measurement?
The measurement is also called the peak expiratory flow rate (PEFR) or the peak expiratory flow (PEF). Peak flow measurement is mostly done by people who have asthma. Peak flow measurement can show the amount and rate of air that can be forcefully breathed out of the lungs. The measurement should be started after a full lung inhalation.
Where can I get a peak flow test?
A peak flow test involves blowing as hard as you can into a small handheld device called a peak flow meter. These are available on prescription or can be bought from most pharmacies.