Sinus Rhythm With Marked Sinus Arrhythmia

No view

Sinus arrhythmia does not relate to the sinus cavities in the face but to the sinoatrial or sinus node in the heart. The sinus node is known as the heart 's natural "pacemaker," meaning it is responsible for the rhythm of a person 's heartbeats. Normal sinus rhythm is a regular rhythm found in healthy people..