This is a full 10-second rhythm strip ... The below ECG strip shows the irregularly irregular QRS complexes present during atrial fibrillation. Using the first method to determine heart rate ...

Detecting when a heart has a truly irregular rhythm by yourself is a toss up, and the only way to confirm an atrial fibrillation (AFib) is to get an electrocardiogram (EKG) from a cardiologist.

Seeing a loved one pass out with their eyes rolled back is a terrifying thing to experience. That minute or two you li ...

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.