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A 40-year-old female asked about a male:

Is sinus arrhythmia in an 8 year old a norm finding? dangerous? my son was diag with it after a 48 hr holter. his heartrate was 50-193 bpm. he had strp a and was hospitalized a month before. worried.

2 doctor answers3 doctors weighed in
Dr. Dominic BLURTON
Pediatric Cardiology 22 years experience
No worries: No you shouldn't worry at all. It's a normal variation. As long as his slow rate was while resting/ sleeping his holter ranges were fine also.
Dr. Lisa Rankin
ADHD and Autism 25 years experience
Ask questions: A sinus arrhythmia is not an unusual finding even in a child and often results in fluctuating heart rates. It is not usually a concern unless the heart rate is too high which can give symptoms and could potentially impact ability to exercise. Ask provider for more specific information regarding ability to exercise and if any other intervention is needed.

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Last updated Aug 23, 2017

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