Rusconi et al developed an equation for determining the distribution of respiratory rates in children from 0 to 3 years of age. The authors are from the University of Milano in Italy.
For an awake child, the 95th percentile for the respiratory rate is:
respiratory rate at 95th percentile =
= 10 ^ (1.82144 - (0.0125995 * (age in months)) + (0.00013401 * ((age in months)^2)))
For an asleep child, the 95th percentile for the respiratory rate is:
respiratory rate at 95th percentile =
= 10 ^ (1.72858 - (0.0139928 * (age in months)) + (0.00017646 * ((age in months)^2)))
The general equation for the exponent at a given percentile in the awake child is:
respiratory rate at Yth percentile =
= 10 ^ X
X =
= (1.6801 + (0.08592 * Z)) - ((0.01189 + (0.0004301 * Z)) * (age in months)) + (0.00013401 * ((age in months)^2)))
The general equation for the exponent at a given percentile in the asleep child is:
respiratory rate at Yth percentile =
= 10 ^ X
X =
= (1.5773 + (0.09196 * Z)) - ((0.01314 + (0.0005155 * Z)) * (age in months)) + (0.00017646 * ((age in months)^2)))
where:
Yth Percentile |
Value for Z |
5 |
-1.65 |
10 |
-1.282 |
25 |
-0.675 |
50 |
0 |
75 |
0.675 |
90 |
1.282 |
95 |
1.645 |
97.5 |
1.960 |
99 |
2.326 |
Specialty: Pulmonology
ICD-10: ,