If a healthy child's heart rate is 120 beats/min and blood pressure is 1 1.5/7.6 kPa, then the child's age should be 2.5 years old, that is, 2.5 years old. The results are as follows: The resting heart rate of normal children is: infant 120 ~ 140, 0 ~ 2 years old10 ~/20, 3 ~ 4 years old 100.
The child's blood pressure is the age multiplied by 2 plus 80, and the downward pressure is equivalent to two-thirds of the upward pressure.