Hello, I'm a 21 year old male who recently wore a heart monitor for 24 hours. Everything came back pretty normal with palpitations. The doctor said I had sinus arrhythmia which is very normal for my age he said. I also had some periods of marked sinus arrhtymia. I was wondering what is marked sinus arrhythmia and is it bad?
I, too have marked sinus arrhythmia as does my 5 year old daughter. I've been told it's not bad, in fact it is a sign of a healthy heart because your heart is responding to variability in your breathing. Marked sinus arrhythmia just means your heart slows down a lot when you breathe out and speeds up a lot when you breathe in. HOpe this helps!
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