The premature beats may disappear, and even if they continue, your child will stay well and won't need any restrictions. Occasionally premature beats may be caused by disease or injury to the heart. Your child's doctor may recommend more tests to make sure your child's heart is ok. A fast heart rate is called tachycardia. A normal heart rate in an exercising teenager may be up to 200 beats a minute, though.
Sinus tachycardia is a normal increase in the heart rate.
It occurs with fever, excitement and exercise, and no treatment is needed. In those cases the tachycardia goes away when the disease is treated. The fast heart rate involves both the heart's upper and lower chambers. This isn't a life-threatening problem for most children and adolescents. For many, it doesn't require medical therapy.