peak expiratory flow rate (PEFR, PER)
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Indications
- used in the assessment of acute asthma.
Clinical significance
- peak expiratory flow rate used in the classification of asthma
- peak expiratory flow rates of < 200 L/min is one of several criteria for admission of asthmatics to the hospital
- flow rate % corresponds to FEV1 %
Notes
- a medical calculator for predicted peak flow & percentage of predicted for pediatric patients is available online at ref[2]
Some predicted peak flows based on height:
| height (inches) | peak flow (L/min) |
|---|---|
| 54 | 293 |
| 60 | 373 |
| 66 | 454 |
| 67 | 467 |
More general terms
References
- ↑ Medical Knowledge Self Assessment Program (MKSAP) 14, American College of Physicians, Philadelphia 2006
- ↑ 2.0 2.1 Cornell University, Medical Calculators, Peak Flow http://www-users.med.cornell.edu/~spon/picu/calc/peakflow.htm