A 76-year-old woman presents with a persistently rapid heart rate that she attributes to her pacemaker. What does the ECG show?

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

And you'll have to stay away from machines with strong magnetic fields, such as metal detectors and MRI machines, as they can affect your pacemaker's electrical signals. Risks of atrial ...

This ectopic focus becomes the predominant pacemaker of the heart. When the atrial rate is greater than 100 beats per minute, the rhythm is atrial tachycardia. If less than 100 beats per minute ...

Wandering atrial pacemaker is similar to multifocal atrial tachycardia except the heart rate is normal ― that is, less than 100 beats per minute. Wandering atrial pacemaker occurs when multiple ...

During atrial overdrive pacing at a cycle length of 420 ms, the following EKG was recorded (Fig. 1). What is the mechanism for the progressive widening of QRS complexes and for the normal narrow ...

Patients requiring a pacemaker often have atrial fibrillation (AF), which increases the risk of thromboembolism and, consequently, the risk of morbidity and mortality. To maintain sinus rhythms ...

the first and only U.S. commercially approved algorithm designed to suppress atrial fibrillation (AF). The AF Suppression algorithm in the Identity pacemaker family is combined with the most ...