in patients with sick sinus syndrome and AF. Background. This algorithm increases the pacing rate when the native rhythm emerges and periodically reduces the rate to search for intrinsic atrial ...

Background: Symptomatic prolonged sinus pauses on termination of atrial fibrillation ... for rhythm or ventricular rate control in this subset of AF patients, a permanent pacemaker is often ...

creates action potentials faster than the sinus node. This ectopic focus becomes the predominant pacemaker of the heart. When the atrial rate is greater than 100 beats per minute, the rhythm is ...

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 ...

There also may be more than two different P wave morphologies known as a wandering atrial pacemaker. Ectopic atrial rhythms occur due to a slowed resting sinus rate from increased vagal tone in ...

Sinus arrhythmia is a variation in the heart's sinus rhythm, usually caused by changes ... digoxin for heart failure or ...

Permanent AF is present when AF is continuously present for more than 7 days, and the patient and clinician decide not to intervene to restore sinus rhythm. The term “chronic atrial fibrillation ...