Sinus rhythm (a.k.a. normal sinus rhythm) refers to the normal heart beat originating from the sinoatrial node. This is manifested as an upright P wave in lead II of the ECG. Sinus bradycardia ...

The rhythm is either sinus rhythm or not sinus rhythm. Sinus rhythm refers to the origination of the electrical activity coming from the sinus node — also known as the sinoatrial node, or SA node.

A group of abnormal heart rhythms resulting from the malfunction of hearts primary pacemaker, sinus node. This results in low pulse rate and fainting. A blood pressure reading below the specified ...

and prolonged sinus pauses after AF termination, which is also known as tachycardia-bradycardia syndrome. When antiarrhythmic drugs (AADs) are administered for rhythm or ventricular rate control ...

In fact, up to 60% of athletes demonstrate ECG changes (in isolation or in combination) such as sinus bradycardia, sinus arrhythmia, first-degree atrioventricular (AV) block, early repolarisation, ...

Frequently observed changes include rhythm and conduction alterations, increased voltages and repolarization anomalies. Sinus bradycardia is a common manifestation of training-induced vagotonia.

Exercise training-induced bradycardia may be due to electrical remodeling of the sinus node ... "Also, a pacemaker can regulate the heart's rhythm, speeding up the heart rate as needed." ...