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 ...

First, the sinoatrial, or SA, node sets your “resting” heart rate, usually somewhere between 60 and 100 beats per minute. This is the base effort needed to circulate enough blood to sustain ...

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 ...

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 ...

Bradycardia is a condition characterized by a slower than normal heart rate. While a normal adult heart beats between 60 and ...

sinus node (SN) function should be selectively depressed. The effects of acute, severe hypoxia (H) on SN refractoriness and sinoatrial conduction time (SACT) were studied using rabbit SN-right ...