Cardiac rhythm refers to the pattern of electrical activity that controls the heart’s contractions. It’s essentially how the heart beats—timing, rate, and regularity. The normal rhythm is called sinus rhythm, which originates from the sinoatrial (SA) node, the heart’s natural pacemaker.

When the heart beats in a regular and efficient manner, it ensures that blood is pumped effectively throughout the body. Any abnormalities in this rhythm, such as arrhythmias (irregular heartbeats), can affect heart function and overall health. Common examples of arrhythmias include atrial fibrillation, bradycardia, and tachycardia. Monitoring and understanding cardiac rhythm is crucial in diagnosing and treating heart conditions.

Heart arrhythmia – Symptoms and causes – Mayo Clinic

https://www.mayoclinic.org/diseases-conditions/heart-arrhythmia/symptoms-causes/syc-20350668#:~:text=In%20a%20typical%20heart%20rhythm,contract%20and%20pump%20out%20blood.

Heart arrhythmia – Symptoms and causes – Mayo Clinic