![]() However, one study suggested it could be used to rule out severe to very severe COPD, which may be useful if access to spirometry is limited. Peak expiratory flow (PEF) measurement cannot usually be reliably used as the only diagnostic test for chronic obstructive pulmonary disease (COPD) because of its weak specificity. Educating the patient in recognition of symptoms which indicate deterioration is nearly as effective. For patients with stable asthma whose symptoms correlate well with peak flow, a peak flow monitor is adequate. Home monitors which provide FEV1 readings are available and give a more accurate assessment of lung function. There is only low-to-moderate evidence that peak flow readings are related to symptoms. There has been much debate in recent years as to whether routine self-monitoring of peak flow for patients with asthma improves management. However, it still has a part to play if diagnostic uncertainty remains after these tests have been completed. It is less used these days for the initial diagnosis of asthma, clinicians being encouraged to use more accurate measurements of lung function such as spirometry and the fractional exhaled nitrous oxide (FeNO) test. Keeping track of peak flow numbers is part of your Asthma Action Plan. Readings from the meter can help you or your child recognize early signs of worsening asthma. It is routinely documented on a graph which predicts normal values based upon a child’s sex, height and age.Peak flow monitoring is recommended for the ongoing management of asthma and during exacerbations. A peak flow meter measures how fast air comes out of your lungs when you exhale forcefully. Peak flow is recorded in litres per minute (L/min). How is peak flow recorded and what are normal readings? ![]() the child not blowing as hard as possible.a poor seal around the mouthpiece or the tongue blocking the mouthpiece.the behaviour of children who have never performed a peak flow before or younger children who are unable to follow the directions of use (usually under 5 years of age).The accuracy of peak flow can be affected by: The correct technique must be observed in order to reduce misleading results. The highest of the three values should be recorded. During this eight minutes you need to introduce peak flow meter to patient, demonstrate its use, return demonstration from patient, taking note. Time limit is changed to 8 minutes from previous 15 minutes. Reset the marker and repeat this up to three times. Peak Flow Meter PFM or now termed as Peak Expiratory Flow Rate is another simplest skill you might get to demonstrate for your NMC OSCE Exam.The marker reading should be noted on the meter. ![]()
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