2 doctors weighed in:
What exactly does it mean if an ECG result is that you have "normal sinus rhythm with marked sinus arrhythmia"?
2 doctors weighed in

Dr. ARMAN Askari
Internal Medicine - Cardiology
1 doctor agrees
In brief: It's normal
This is a normal variant.
Sinus arrhythmia is a normal phenomenon. It involves cyclic changes in heart rate during breathing. It suggests a healthy parasympathetic nervous system.

In brief: It's normal
This is a normal variant.
Sinus arrhythmia is a normal phenomenon. It involves cyclic changes in heart rate during breathing. It suggests a healthy parasympathetic nervous system.
Dr. ARMAN Askari
Dr. ARMAN Askari
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Dr. Umesh Patel
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