Atrial tachycardia and other ectopic atrial rhythms occur when a site outside of the sinus node, but within the atria, creates action potentials faster than the sinus node. This ectopic focus becomes ...

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.

If you are a nurse, doctor or other medical professional that deals with cardiac issues or ECG readings, you owe it to yourself and your patients to take an EKG interpretation course. An EKG ...

Apple Watch users can now take a reading of their heart's electrical signal by holding a finger on the crown of the device. On Thursday, customers with the Apple Watch Series 4 who install the latest ...

The Apple Watch Series 4's transformation from miniature iPhone and fitness tracker to medical device is now complete with the release of the ECG (electrocardiogram) app and irregular heart rhythm ...