A member asked:

What are the causes of sinus arrhythmia?

A doctor has provided 1 answer

Usually normal. : The commonest type of sinus arrhythmia is related to breathing - also called respirophasic sinus arrhythmia. The hr speeds up during inspiration and slows during breathing out. This is normal, and a sign of good health. Rarely, sinus arrhythmia is seen in the elderly person, but without symptoms, it rarely requires treatment.

Answered 8/10/2016

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