Jude Medical Cardiac Rhythm Management Division, Sylmar, CA). It was designed to provide a high percentage of atrial-paced beats while allowing for the normal diurnal variation in the heart rate.

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 ...

The sinus node is the heart's "natural pacemaker" that starts the hearbeat. But when the sinus node fails, there are backup pacemakers in the AV node (responsible for junctional rhythm ...

Often, heart block is treated with a pacemaker, which regulates the heart's rhythm. Such devices are rare in children. Only about 1 in 20,000 babies are born with heart block, and of those ...

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

as they can affect your pacemaker's electrical signals. Risks of atrial fibrillation ablation For some people, ablation restores a normal heart rhythm better than medications. It’s generally ...

Authorities initially ruled out foul play after the bodies were discovered on February 26. Immediate tests for carbon monoxide poisoning were negative.

Get Instant Summarized Text (Gist) A modified pacemaker, about one-quarter the size of standard devices, has been shown to safely stabilize heart rhythms in newborns for up to 2.2 years. This ...