Pacemaker cells in the sinoatrial node control heart rate, but what controls the ticking of these pacemaker cells? New research reveals, for the first time, a critical functional interaction between ...

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 P ...

Since hypoxia inhibits conduction & automaticity predominantly in tissues dependent on the slow (Ca-channel) current, sinus node (SN) function should be selectively depressed. The effects of acute, ...