A normal rhythm, known as , starts in the sinoatrial (SA) node—the heart's natural pacemaker. This signal travels through the heart in a specific sequence, which is visualized on an electrocardiogram (ECG) as the PQRST wave pattern:
Cardiac rhythm is the regular pattern of your heartbeat, controlled by the heart’s internal electrical system. In a healthy adult at rest, this rhythm typically falls between 60 and 100 beats per minute (bpm). Normal Cardiac Rhythm cardiac rhythm
: An irregular and often rapid heart rhythm that can increase the risk of stroke or heart failure. A normal rhythm, known as , starts in
: Ventricular contraction (bottom chambers pumping blood to the lungs and body). T Wave : Ventricular recovery (preparing for the next beat). Common Variations and Abnormalities (Arrhythmias) A normal rhythm