A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization. This term can be confusing, as not all ECG leads contain all three of these waves; yet a “QRS ...

The Internet is rich in cardiology resources. Below you will find my top choices, including heart sounds, self-quizzes, and electrocardiogram (ECG) tutorials. The University of Utah's ECG learner is ...

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.

ECG monitors, also known as EKGs, can measure your heart rate and rhythm. Having one at home can be helpful, but what type should you get? Check out our picks to get started. ECG or EKG stands for ...