General information
The peak expiratory flow rate is the flow of air generated in the first 0.1 seconds of a forced expiration. It can be measured with a portable peak flow meter. The result is extrapolated over 1 minute and expressed in litres of expired air per minute.
- It is used to monitor asthma and to quantify the severity of a crisis, and can help to adjust treatment.
- A single value is of little relevance; multiple results for the same patients are required.
Specifications
Hand-held device used to measure the air flow from the lungs in one "fast blast."
Suitable for adults and children.
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Materials: |
Main body: impact-resistant ABS plastic |
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Cover and handle: high-density polypropylene |
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Scale: hot-stamped, alcohol-resistant |
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Specifications: |
Shaped mouth piece: oval |
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Handle: folds out, keeps hand away from the air stream thus encourages use of the proper technique for accurate readings. |
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Performance data: |
Accuracy: |
+/-10% or 10 litres/minute |
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Reproducibility: |
≤ 12% or 15 litres/minute |
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Linearity: |
≤ 5% or 10 litres/minute |
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Resistance to flow: |
≤ 0.35kPa/litres/second |
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Frequency response: |
≤ 12% or 15 L/mn |
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Scale resolution: |
10 litres/minute from 60-700 litres/minute |
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20 litres/minute from 700-800 litres/minute |
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Calibration data: |
Measurement range: |
60-800 litres/minute |
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Resolution: |
10 litres/minute |
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Three zone asthma management: |
Adjustable colour-coded indicator: green, yellow and red (on the scale side) |
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Warranty: |
1 year |
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Packaging: |
Delivered in a carry case. |
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Other: |
Complies with EN 13826:2003: Peak expiratory flow meters or equivalent international. |