The heart's natural pacemaker is the sinoatrial (SA) node. Learn more about its function and what happens if it stops working here.

An accelerated junctional rhythm occurs when the heart’s atrioventricular node beats too quickly. Damage to the heart’s primary natural pacemaker causes it.

Specialized cells in your heart’s right atrium called the sinus node (sinoatrial, or SA, node) usually control its rhythm. The SA node acts as a natural pacemaker, creating the electrical ...

When you have a wandering atrial pacemaker, control of your heartbeat shifts from your SA node to other parts of your atria, the two upper chambers of your heart. When that happens and your heart ...

Myth: Shocking someone who has flat-lined can get their heart started again. It never fails. You’re watching television and someone is circling the drain, ...

People refer to the sinoatrial (SA) node, which is in the right atrium, as the pacemaker. In a typical heartbeat, the electrical signal that controls heart rate begins in the SA node.

This could have important implications for humans, whose heart is very similar in structure, particularly in studying conditions that affect the SA node, such as arrhythmia. The pacemaker ...

When the patient's heart was removed, a portion of the right atrium was left behind including the native sinoatrial node (SA node). A new heart was implanted which also included a SA node. The end ...

Sinus rhythm refers to the origination of the electrical activity coming from the sinus node — also known as the sinoatrial node, or SA node. This results in an upright P wave in lead II on the ECG.

The result is a comprehensively detailed 3D heart of the cadaver that beats in a highly accurate manner. This new technology is part of the upcoming Table 7 software release for the Anatomage Table.