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Doctor insights on: What Is The Normal Peak Expiratory Flow Rate Of An Typical Adult

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What is the normal peak expiratory flow rate of an typical adult?

Depends: Peakflow is based on your height and age. Best to google a peak flow rate calculator (they are free on line). ...Read more

Peak Expiratory Flow (Definition)

Is the maximum effort you can do while blowing the air out (expiration) is an inderect measure how your lungs are within a patient with asthma. Although not exact & varuiable as a follow up value can help ...Read more


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How long does the peak expiratory flow rate take?

How long does the peak expiratory flow rate take?

Breif: A peak expiratory flow rate is a fairly simple test done, usually as part of a comprehensive pulmonary function test procedure. By itself, a few minutes as one usually is instructed to do several attempts and the best result or average results recorded. A full set of pft's may take 30 minutes to an hour depending on factors like patient cooperation, quality of equipment etc. ...Read more

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What is the definition or description of: peak expiratory flow?

What is the definition or description of: peak expiratory flow?

Maximum effort: Is the maximum effort you can do while blowing the air out (expiration) is an inderect measure how your lungs are within a patient with asthma. Although not exact & varuiable as a follow up value can help patients monitor their asthma. ...Read more

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My peak expiratory flow has never been over 250, Should I be concerned?

My peak expiratory flow has never been over 250, Should I be concerned?

Depends: that seems a bit low. Full pulmonary function tests with a pulmonary MD could help clarify the cause. ...Read more

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What do you suggest if my peak expiratory flow has never been over 250, should I be worried?

What do you suggest if my peak expiratory flow has never been over 250, should I be worried?

More information/pft: Yes, for most adults, this would indicate an abnormal amount of air being expired. This may indicate obstruction/restriction or a combination of these conditions. Your physician will guide further testing to determine the underlying cause. Asthma is one of the more common causes of a low PEF. ...Read more

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Is a peak flow of 300 a reason to be concerned in a 58 year old 5 ft 7, normal weight?

Is a peak flow of 300 a reason to be concerned in a 58 year old 5 ft 7, normal weight?

Normal is 370: You are just barely in the green assuming your normal peak flow is 370. A number of assumptions. You probably have some underlying disorder like asthma or COPD causing your peak flow to be lower? Green means that you are ok, yellow range would be from 300 to 185 and below 185 is the red range. Red range, seek medical attention. Yellow range - you should have a plan with your regular physician. ...Read more

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I am 24 year old female distance runner (5'5' 125lbs). Best peak flow has been 350. Is that normal?

I am 24 year old female distance runner (5'5' 125lbs). Best peak flow has been 350. Is that normal?

No: That is on the low side fora 24 year old who is 5'5"you should visit the dr and get that checked out and you will run much easier! you migh need a long acting medication not just albuterol ...Read more

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What factors can negatively affect peak flow in a normal person? For example lying down, body posture, stress?

What factors can negatively affect peak flow in a normal person? For example lying down, body posture, stress?

Peak flow changes: Any things which trigger your asthma will decrease your peak flow rate. Also anything which restricts the movement of your chest wall - tight fitting clothes, injury to the chest wall. ...Read more

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