#### II. Calculation: Estimated PEFR in Children

1. PEFR = (Ht - 100) x5 + 100
2. Where
1. Ht is standing height in centimeters
2. PEFR is Peak Expiratory Flow in liters per minute
3. References
1. Balasubramanian (2002) Indian Pediatr 39:104-6 [PubMed]

#### III. Calculation: Estimated PEFR in Adult Females

1. PEFR = (((Height x3.72) +2.24) - (Age x 0.03)) x 60
2. Where Height in meters or (inches x 0.0254)

#### IV. Calculation: Estimated PEFR in Adult Males

1. PEFR = (((Height x5.48) +1.58) - (Age x 0.041)) x 60
2. Where Height in meters or (inches x 0.0254)9

#### V. Calculation: Estimated Peak Flow in children based on height

1. Height 43 inches: 147 L/m
2. Height 44 inches: 160 L/m
3. Height 45 inches: 173 L/m
4. Height 46 inches: 187 L/m
5. Height 47 inches: 200 L/m
6. Height 48 inches: 214 L/m
7. Height 49 inches: 227 L/m
8. Height 50 inches: 240 L/m
9. Height 51 inches: 254 L/m
10. Height 52 inches: 267 L/m
11. Height 53 inches: 280 L/m
12. Height 54 inches: 293 L/m
13. Height 55 inches: 307 L/m
14. Height 56 inches: 320 L/m
15. Height 57 inches: 334 L/m
16. Height 58 inches: 347 L/m
17. Height 59 inches: 360 L/m
18. Height 60 inches: 373 L/m
19. Height 61 inches: 387 L/m
20. Height 62 inches: 400 L/m
21. Height 63 inches: 413 L/m
22. Height 64 inches: 427 L/m
23. Height 65 inches: 440 L/m
24. Height 66 inches: 454 L/m
25. Height 67 inches: 467 L/m
26. References
1. Polgar (1971) PFTs in Children, Saunders

#### VI. Calculation: Estimated Peak Flow in Men based on Age and height

1. Height 65 inches (165 cm)
1. Age 25 years: 520 L/m
2. Age 30 years: 510 L/m
3. Age 40 years: 489 L/m
4. Age 50 years: 468 L/m
5. Age 60 years: 447 L/m
2. Height 70 inches (178 cm)
1. Age 25 years: 592 L/m
2. Age 30 years: 581 L/m
3. Age 40 years: 561 L/m
4. Age 50 years: 543 L/m
5. Age 60 years: 519 L/m
3. Height 75 inches (190 cm)
1. Age 25 years: 664 L/m
2. Age 30 years: 653 L/m
3. Age 40 years: 632 L/m
4. Age 50 years: 611 L/m
5. Age 60 years: 590 L/m

#### VII. Calculation: Estimated Peak Flow in Women based on Age and height

1. Height 60 inches (152 cm)
1. Age 25 years: 365 L/m
2. Age 30 years: 357 L/m
3. Age 40 years: 342 L/m
4. Age 50 years: 327 L/m
5. Age 60 years: 312 L/m
2. Height 65 inches (165 cm)
1. Age 25 years: 401 L/m
2. Age 30 years: 394 L/m
3. Age 40 years: 379 L/m
4. Age 50 years: 364 L/m
5. Age 60 years: 349 L/m
3. Height 70 inches (178 cm)
1. Age 25 years: 439 L/m
2. Age 30 years: 431 L/m
3. Age 40 years: 416 L/m
4. Age 50 years: 401 L/m
5. Age 60 years: 386 L/m

### Ontology: Peak expiratory flow rate measurement (C0030735)

 Definition (MSH) Measurement of the maximum rate of airflow attained during a FORCED VITAL CAPACITY determination. Common abbreviations are PEFR and PFR. Concepts Diagnostic Procedure (T060) MSH D010366 English Expiratory Peak Flow Rate, Flow Rate, Peak Expiratory, Peak Expiratory Flow Rate, Peak expiratory flow rate, peak expiratory flow rate, PFR, peak expiratory flow rate test, pefr, PEFR, Peak expiratory flow rate measurement Italian Velocità massima di flusso espiratorio, Velocità di flusso espiratorio di picco, Velocità di picco di flusso espiratorio, PEFR, Picco del tasso del flusso espiratorio Dutch PFR, PEFR, peak expiratory flow rate, Maximaal expiratore volumestroom, Volumestroom, maximaal expiratore French DEP, DP, DEP (Débit Expiratoire de Pointe), Débit expiratoire de pointe German PEFR, PFR, expiratorischer Spitzenfluss, Expiratory Peak Flow Rate, Maximaler Exspirationsstrom Spanish TFM, TFEM, Ápice del Flujo Espiratorio, Tasa de flujo espiratorio máximo Japanese ＰＦＲ, ＰＥＦＲ, PEFR, PFR, ｻｲﾀﾞｲｺｷﾘｭｳﾘｮｳ, 最大呼気流量, 最高呼気速度, 最大呼気速度, 最高ピーク呼気速度 Swedish Topputandningsflöde Czech exspirační průtoková rychlost - vrchol, Vrcholová výdechová rychlost, Vrcholová průtoková rychlost Finnish Uloshengityksen huippuvirtaus Russian VYDOKH, SKOROST' POTOKA VOZDUKHA NA VYSOTE VYDOKHA, ВЫДОХ, СКОРОСТЬ ПОТОКА ВОЗДУХА НА ВЫСОТЕ ВЫДОХА Polish Szczytowy przepływ wydechowy, PEFR, Wskaźnik szczytowego przepływu wydechowego, Przepływ wydechowy szczytowy Hungarian Kilégzési csúcsáramlás, PFR, PEFR Norwegian PEF, Toppstrømshastighet, utånding, Ekspiratorisk toppstrømshastighet, Peak ekspiratorisk flow Portuguese Volume expiratório máximo por segundo, Pico do Fluxo Expiratório