Peak Flow Meter Readings

Decide when to use your rescue medicine. The change in scale for peak flow meters will result in pef readings that are different depending on whether the individual has used a wright scale meter or the new eu scale meter.

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A peak flow meter is a tool that measures the peak expiratory flow rate pefr.

Peak flow meter readings. Your peak flow score also known as your peak expiratory flow pef will be displayed on the side of your peak flow meter. 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. And decide when to seek emergency care.

This measure is called a peak expiratory flow or pef keeping track. What s considered a normal score depends on your age height and gender. Readings tend to be lower in the morning and will be affected by how recently the person has taken his or her inhaler to expand the airways.

People primarily use pefr. For example a 30 year old male that is 5 10 tall should have a reading close to 622 liters per minute. Peak flow readings can show you when to start following the steps on your asthma action plan that you developed with your healthcare provider.

It can help you determine the severity of the episode. This is given in litres of air breathed out per minute l min. Check the charts below for normal peak flow values click on images to enlarge.

Measuring your peak flow when you feel well will establish your normal or best peak flow. A normal peak flow will vary according to height age and gender. It is important to remember that everyone is different and you should be guided by what is normal for you.

The peak flow meter works by measuring how fast air comes out of the lungs when you exhale forcefully after inhaling fully. Normal readings of peak flow meters are within 80 100 of the baseline reading. The pefr is the amount of air a person can quickly force out of their lungs in one breath.

A peak flow meter is a portable easy to use device that measures how well your lungs are able to expel air. Normal readings of peak flow meters depend on a person s age sex and height. The most important thing is whether your score is normal for you.

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. Sometimes it is useful for health professionals to have a guide as to what peak flow could be expected from each individual if they didn t have asthma. A chart called a nomogram can be used to estimate your predicted peak flow if you are male or female your age and height.

Adults should achieve readings of 400 to 700 litres per minute with men generally higher.

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