Our easy-to-read patient fact sheet compares and contrasts sinus arrhythmia vs AFib (atrial fibrillation) symptoms.

then the term “ectopic atrial rhythm” is used. Because the origination of this electrical activity is not from the sinus node, the P wave would not have its normal sinus appearance ― that is ...

The heart tissue has a specialized conduction system that maintains ... rhythm may persist and take over the heart's normal sinus rhythm. It may cause symptoms like light-headedness and fainting ...

Because the normal ventricular conduction system (His-Purkinje) is used, the QRS complex is frequently narrow. A junctional rhythm is normally ... not be similar to the sinus P wave, which is ...

The drug reduces heart rate at rest and during exercise in patients in sinus rhythm while maintaining myocardial contractility and atrioventricular conduction. The development of this drug has ...