as there is no pattern to their frequency. This is commonly described as varying RR intervals. This means an ECG showing atrial fibrillation will have no visible P waves and an irregularly ...

This ECG shows atrial fibrillation with an uncontrolled ventricular rate. There are two QRS complexes that become wide in a right bundle branch block pattern. This can occur at fast heart rates ...

Once you cross age 40, you have a 1 in 4 chance of developing AFib. The Heart Rhythm Society ... Simple electrocardiogram (ECG or EKG) technology can measure your heart’s activity.

NEW HAVEN, Conn. (WTNH) — In Friday’s Health headlines, February is heart month, and we’re talking about AFib, portable EKG devices, and how stress this season can be hard on the heart.