Laboratory reference values, in particular, may vary from one institution to
another. However, the following may be a helpful guide in recognizing abnormal
physiologic and laboratory ranges, by age. [ 8 ]
Table 1: Abnormal physiologic/laboratory findings by age:
AGE
TACHYCAR
DIA
(beats/min)
BRADYCARD
IA
(beats/min)
TACHYPN
EA
(breaths/mi
n)
LEUKOCYTOSIS/
LEUKOPENIA
(WBC x 10^3 /mm)
0 - 7 days >180 <100 >50 >34
8 - 30 days >180 <100 >40 >19.5 or <5
30 days - 1
year
>180 <90 >34 >17.5 or <5
2 - 5 years >140 n/a >22 >15.5 or <6
6 - 12 years >130 n/a >18 >13.5 or <4.5
13 - 18 years >110 n/a >14 >11 or <4.5