Medically reviewed by Rafle Fernandez, MD Deciding when to go to the hospital for a rapid heart depends on your health history and how you are feeling overall. A heart rate of 100 beats per minute ...

We have demonstrated that overexpression of an inhibitory component of the β-adrenergic signaling pathway suppresses AV nodal conduction ... can modify the cardiac electrical substrate implicated ...

Heart attacks and cardiac arrest differ in causes, symptoms, and treatments. Learn how recognizing these emergencies improves ...

An electrocardiogram is a picture of the electrical conduction of the heart. By examining changes from normal on the ECG, clinicians can identify a multitude of cardiac disease processes.

Medically reviewed by Christopher Lee, MD Having high blood pressure but a low pulse rate can be a sign of a more serious underlying health condition, such as a heart problem. Your blood pressure is ...

“Cardiac conduction disease ... An arrhythmia is an abnormal heart rate that occurs when the electrical signals that tell the heart to beat aren’t functioning properly. This may result ...

Heart block is a type of arrhythmia. It means electrical signals in the heart are not working as they should, delaying the conduction of the heart beat. First-degree heart block is the least ...

A junctional rhythm occurs when the electrical activation of the heart originates near or within ... Because the normal ventricular conduction system (His-Purkinje) is used, the QRS complex ...