A member asked:

What could be possible causes for a 4 year old's heart to race then slow down, and repeat the cycle every few seconds when listening with a steth?

A doctor has provided 1 answer
Dr. Steven Hill answered

Specializes in Family Medicine

Most often normal: Most often this is a benign condition where the heart rate varies with respiration - speeding up with inspiration and slowing with exhalation. This is usually called a sinus arrhythmia and tends to go away as we age. If you are concerned have your child checked by his doctor for reassurance.

Answered 4/27/2012

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