A sinus rhythm is any cardiac rhythm in which depolarisation of the cardiac muscle begins at the sinus node. It is necessary, but not sufficient, for normal...

Sinus bradycardia is a sinus rhythm with a reduced rate of electrical discharge from the sinoatrial node, resulting in a bradycardia, a heart rate that...

Sinus arrhythmia is a commonly encountered variation of normal sinus rhythm. Sinus arrhythmia characteristically presents with an irregular rate in which...

Sinus tachycardia is a sinus rhythm of the heart, with an increased rate of electrical discharge from the sinoatrial node, resulting in a tachycardia...

This sinus rhythm is important because it ensures that the heart's atria reliably contract before the ventricles.[citation needed] In junctional rhythm, however...

to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can convert AF to normal heart rhythm and is often necessary...

normal resting hearts, the physiologic rhythm of the heart is normal sinus rhythm (NSR). Normal sinus rhythm produces the prototypical pattern of P wave...

macro-reentrant pathway restoring sinus rhythm. Cardioversion for restoration of sinus rhythm from an atrial rhythm is largely a scheduled procedure....

patterns. A slow rhythm (less than 60 beats/min) is labelled bradycardia. This may be caused by a slowed signal from the sinus node (sinus bradycardia),...

Bradycardia caused by the alterations of sinus node activity is divided into three types. Sinus bradycardia is a sinus rhythm of less than 50 BPM. Cardiac action...