
What Is Sinus Arrhythmia?
Reviewed by the emergency care team at Aether Health ER | Spring Cypress, Kingwood, and SilverLake (Pearland), TX | +1 (713) 528-8703 What is sinus arrhythmia? In simple terms, it’s a small, natural variation in your heart rate tied to your breathing. Your heart speeds up slightly when you inhale




