Sinus rhythm refers to the origination of the electrical activity coming from the sinus node — also known as the sinoatrial node, or SA node. This results in an upright P wave in lead II on the ECG.

An EKG shows the heart's electrical activity as line tracings on paper. The peaks and valleys are called waves. The Arrhythmia app provides the ability to practice identifying basic EKG rhythms as ...

Each P wave is followed by a QRS complex which is narrow (supraventricular in origin). Click below for a detalied review of ECG findings in ectopic atrial rhythms.

Additional rhythms, making a total of 23, are unlocked via an in-app purchase. The app provides the ability to practice identifying basic EKG rhythms as they are simulated across the screen.

While the basic ECG technology was developed more than a hundred years ago, the field of ECG interpretation has become part of the high-tech revolution. Computers can make a preliminary ...

In 2018, to much fanfare, Apple announced two new additions to the Apple Watch. There's an ECG app exclusive to the Series 4 that can indicate whether your heart rhythm shows signs of atrial ...

Fitbit unveiled the ECG app as a feature on its newest device, Fitbit Sense, which will be available in October. The Fitbit Sense is designed to track key trends in users' health and well-being ...