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Age-specific vital signs and laboratory variables
| Age Group | Heart Rate (Beats/Min) |
Respiratory Rate (Breaths/Min) | Leukocyte Count (Leukocytes × 103/mm) | Systolic Blood Pressure (mm Hg) | |
|---|---|---|---|---|---|
| Tachycardia | Bradycardia | ||||
| 0 days to 1 wk | >180 | <100 | >50 | >34 | <65 |
| 1 wk to 1 mo | >180 | <100 | >40 | >19.5 or <5 | <75 |
| 1 mo to 1 yr | >180 | <90 | >34 | >17.5 or <6 | <100 |
| 2–5 yrs | >140 | NA | >22 | >15.5 or <6 | <94 |
| 6–12 yrs | >130 | NA | >18 | >13.5 or<4.5 | <105 |
| 13 to <18 yrs | >110 | NA | >14 | >11 or <4.5 | <117 |
Modified from 7.
