Sinoatrial exit block occurs when the action potential initiated by the sinoatrial node is inhibited or completely blocked before it is able to leave the SA node and reach the atrium, and thus no ...

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.

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 ...

The sinus node refers to the heart’s natural pacemaker. This prevents the heartbeat from originating in the sinoatrial node, which creates sinus rhythm. Instead, it causes it to originate in ...

This occurs when the activity of the heart’s pacemaker, the sinoatrial node, is impaired. Up to now, no-one has been able to work out why this happens. But groundbreaking research by Professor Henggui ...