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

The QRS morphology in this ECG is of a left bundle branch block pattern and is monophasic downward in the precordial leads, another indicator of a ventricular origin of the rhythm. An ...

This ECG is challenging. The rhythm starts as normal sinus rhythm with a right bundle branch block, then a wide-complex tachycardia develops in a left bundle branch block pattern. The important ...

Is your heart racing because you’re in love or is it a sign of a more serious heart condition? A cardiologist explains how to spot the difference.

Sinus arrhythmia is a variation in the heart's sinus rhythm, usually caused by changes in a person's breathing cycle. It's a ...

The sudden death of a UNLV football player leaves the community seeking answers while young athletes reevaluate their own ...

These personal EKG monitoring options can help you know whether your heart is beating as it should as you go about your daily life.

These data were reviewed by ECG technicians using standard clinical methodology. The same data were then re-analyzed using an ...