11/13/24, 7\:09 PM Guide | Peak expiratory flow rate measurement (PEFR)

Peak expiratory

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Introduction

Wash your hands and don PPE if appropriate.
Introduce yourself to the patient including your name and role.
Con
Brie
i n a n d o u t o f y o u r l u n g s , w h i c h i s k n o w n a s p e a k
m e a s u r i n g p e a k
"
Gain consent to proceed with PEFR measurement.
Position the patient so that they are sitting comfortably.
Ask the patient if they have any pain or shortness of breath before performing PEFR measurement.

Measuring PEFR

Ensure you clearly explain and demonstrate each of the following steps to the patient\:
1. Ensure the peak
2. Position yourself sitting up straight or standing.
3. Take the deepest breath you are capable of.
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4. Hold the peak
creating a tight seal with your lips.
5. Exhale as forcefully as you are able to.
6. Note the reading on the peak
7. Repeat steps 1-6 twice more.
8. The highest reading of the three attempts should be used as the
After you have explained and demonstrated PEFR measurement, observe the patient carrying out the procedure and provide
feedback to allow them to re
Insert peak

Interpreting PEFR

PEFR is measured in litres per minute (L/min). The expected peak expiratory
age, sex and height (Figure 1). A normal reading is approximately between 400 - 600 L/min.
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Figure 1. Normal values for peak expiratory
Causes of a reduced PEFR include asthma (most common) and COPD. Patients with asthma may monitor their condition using
a peak

To complete the procedure...

Check if the patient has any questions regarding PEFR measurement.
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