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Predicted Peak Flow
Dec 21, 2024
•
Mark Morgan
categories:
pulmonology
This is a predicted peak flow calculator.
Predicted Peak Expiratory Flow
Adult Male
Adult Female
Child or Adolescent Male or Female
20
25
30
35
40
45
50
55
60
65
70
75
<-- Age
60 in or 152 cm
65 in or 165 cm
70 in or 178 cm
75 in or 191 cm
80 in or 203 cm
<-- Height
Predicted Average Peak Expiratory Flow -->
result
score1=(Q2a)+(Q3);score1>1204?'560':score1>1203?'547':score1>1202?'532':score1>1201?'515':score1>1200?'496':score1>1104?'582':score1>1103?'568':score1>1102?'552':score1>1101?'535':score1>1100?'515':score1>1004?'603':score1>1003?'588':score1>1002?'572':score1>1001?'554':score1>1000?'533':score1>904?'622':score1>903?'607':score1>902?'591':score1>901?'572':score1>900?'551':score1>804?'640':score1>803?'625':score1>802?'608':score1>801?'588':score1>800?'566':score1>704?'656':score1>703?'640':score1>702?'622':score1>701?'602':score1>700?'580':score1>604?'668':score1>603?'651':score1>602?'633':score1>601?'613':score1>600?'591':score1>504?'675':score1>503?'659':score1>502?'641':score1>501?'620':score1>500?'597':score1>404?'677':score1>403?'661':score1>402?'643':score1>401?'622':score1>400?'599':score1>304?'672':score1>303?'655':score1>302?'637':score1>301?'617':score1>300?'594':score1>204?'656':score1>203?'640':score1>202?'622':score1>201?'603':score1>200?'580':score1>104?'626':score1>103?'611':score1>102?'594':score1>101?'575':'554'
liters per minute
20
25
30
35
40
45
50
55
60
65
70
75
<-- Age
55 in or 140 cm
60 in or 152 cm
65 in or 165 cm
70 in or 178 cm
75 in or 191 cm
<-- Height
Predicted Average Peak Expiratory Flow -->
result
score2=(Q2b)+(Q4);score2>1204?'422':score2>1203?'413':score2>1202?'402':score2>1201?'391':score2>1200?'377':score2>1104?'436':score2>1103?'427':score2>1102?'416':score2>1101?'404':score2>1100?'390':score2>1004?'451':score2>1003?'441':score2>1002?'430':score2>1001?'417':score2>1000?'403':score2>904?'464':score2>903?'454':score2>902?'443':score2>901?'430':score2>900?'415':score2>804?'477':score2>803?'467':score2>802?'455':score2>801?'442':score2>800?'427':score2>704?'489':score2>703?'478':score2>702?'466':score2>701?'453':score2>700?'437':score2>604?'499':score2>603?'488':score2>602?'476':score2>601?'462':score2>600?'446':score2>504?'507':score2>503?'496':score2>502?'483':score2>501?'469':score2>500?'453':score2>404?'512':score2>403?'501':score2>402?'488':score2>401?'474':score2>400?'458':score2>304?'513':score2>303?'502':score2>302?'489':score2>301?'475':score2>300?'458':score2>204?'509':score2>203?'497':score2>202?'485':score2>201?'471':score2>200?'455':score2>104?'497':score2>103?'486':score2>102?'474':score2>101?'460':'444'
liters per minute
43 in or 109 cm
44 in or 112 cm
45 in or 114 cm
46 in or 117 cm
47 in or 119 cm
48 in or 122 cm
49 in or 124 cm
50 in or 127 cm
51 in or 130 cm
52 in or 132 cm
53 in or 135 cm
54 in or 137 cm
55 cm or 140 cm
56 cm or 142 cm
57 in or 145 cm
58 in or 147 cm
59 in or 150 cm
60 in or 152 cm
61 in or 155 cm
62 in or 157 cm
63 in or 160 cm
64 in or 163 cm
65 in or 165 cm
66 in or 168 cm
<-- Height
Predicted Average Peak Expiratory Flow -->
result
score3=(Q5);score3>23?'454':score3>22?'440':score3>21?'427':score3>20?'413':score3>19?'400':score3>18?'387':score3>17?'373':score3>16?'360':score3>15?'347':score3>14?'334':score3>13?'320':score3>12?'307':score3>11?'293':score3>10?'280':score3>9?'267':score3>8?'254':score3>7?'240':score3>6?'227':score3>5?'214':score3>4?'200':score3>3?'187':score3>2?'173':score3>1?'160':'147'
liters per minute
display/hide references
reference:
#1
Polgar, G. (1979). Pulmonary function tests in children. The Journal of pediatrics, 95(1), 168-170.
#2
Nunn AJ, Gregg I. New regression equations for predicting peak expiratory flow in adults. BMJ. 1989 Apr 22;298(6680):1068-70.
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