In humans, the heart’s sinoatrial node (SAN), acts as the body’s pacemaker. A new study, published Wednesday (July 26) in Science Translational Medicine, reports two backup mechanisms that may prevent ...

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 rhythm of the heart is directed by the "pacemaker" of the heart called the sinoatrial (SA) node. The SA node generates an electrical impulse that causes the upper heart chambers (atria ...

A junctional rhythm occurs when the electrical activation of the heart originates near or within the atrioventricular node, rather than from the sinoatrial node. Because the normal ventricular ...

Abnormally slow heart rates result from breakdowns in two principal areas of the heart. First, the sinoatrial, or SA, node sets your “resting” heart rate, usually somewhere between 60 and 100 ...

Ivabradine is a selective inhibitor of the I f ion channel found in cardiac pacemaker cells of the sinoatrial node. The drug reduces heart rate at rest and during exercise in patients in sinus ...

Drivers of sinoatrial node automaticity in zebrafish: comparison with mechanisms of mammalian pacemaker function. Front Physiol. 2022; 13:818122. Quinn TA, Kohl P. Cardiac mechano-electric coupling: ...