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 ...

But when the sinus node fails, there are backup pacemakers in the AV node (responsible for junctional rhythm) and ventricles that can take over if needed. These can also take over the heart rhythm ...

It is likely that the P wave is buried in the QRS complex and the rhythm is junctional in origin. See the Junctional Rhythms Review below for more details on diagnosing a junctional rhythm.

In the NORMO group, one patient had a persistent accelerated junctional rhythm associated with prolonged hypotension. This arrhythmia was missed at the bedside, and it was only identified ...