 [ Symptoms ] if 6 year old child has fever over 100 f and tachypnea and tachycardia should he go to er [ Disease ] yes something could be going on normal heart rate is 60 100 a child is heart will tend to be closer to 60 normal respirations are 16 22 again a child is on the lower end i would seek medical attention if his is on the higher end i am in nursing school and a child is so different than an adult their status can change so much more than an adults