Any disease affecting the heart muscle (“myocardium”) is a potential cause of sudden cardiac death. This includes heart ...

However, this short-term regulation did not explain why the heart conduction system generally slowed down at night. “All the arrows pointed to the fact that there might be an intrinsic rhythm with the ...

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 ...

Atrial fibrillation, or A-fib, is an irregular heart rhythm that increases a person's risk of stroke, heart failure and even premature death. While many risk factors contribute to A-fib ...

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.

Irregular heart rhythm -- arrhythmia -- is when your heart doesn't keep up a good beat. Learn what it means here. You may not know what a heart valve is -- until it stops working right.

Taking an ECG reading on your watch can help determine if you have a healthy heart rhythm. However, many people may only use this feature once and then forget about it. For a substantial number of ...

If you have AFib, you'll need help keeping your heart in a normal rhythm. Various specialists will make up your AFib team. Treatments such as medications, nonsurgical procedures, and surgery can ...

and the overall heart rhythm, he adds. Note: The heart rate is different from the heart rhythm, which refers to the thump-thump pattern in which your heart beats. You can have an abnormal heart ...

The Role of Electrophysiology Electrophysiology (EP) is a specialized field of cardiology that diagnoses and treats abnormal heart rhythms. Electrophysiologists use advanced mapping techniques to ...