Sinus arrhythmia

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List of terms related to Sinus arrhythmia

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Sinus arrhythmia is a variation, either increase or decrease, of the heart rate due to changes in the sinus node. An increase or a decrease in the heart rate caused by alterations in the sinus node is termed sinus tachycardia and sinus bradycardia respectively. A subtype of sinus arrhythmia is respiratory sinus arrhythmia which refers to the normal slowing down of heart rate during expiration (breathing out) and speeding up of heart rate during inspiration.

Classification

Click on one of the below listed types of sinus arrhythmia to read more about them.