“Understanding the remodeling that’s going on in the heart at the transcriptional level is pretty fascinating,” said Elizabeth Schroder Stumpf, a physiologist at the University of Kentucky, who was ...

A new heart was implanted which also included a SA node. The end result is two P waves both of sinus morphology, however at different rates. Interestingly, only the transplanted SA nodal activity ...

Bradycardia is a condition characterized by a slower than normal heart rate. While a normal adult heart beats between 60 and 100 times per minute, bradycardia is defined when heart rate falls below 60 ...

Medically reviewed by Richard N. Fogoros, MD The right atrium is one of the heart's upper chambers that plays a role in blood ...

This indicates that the pacemaker is coming from the sinus node and not elsewhere in the atria, with an atrial rate of greater than 100 beats per minute. The ventricular rate (indicated by the QRS ...

Sinus bradycardia is a form of slow heart rate that begins in a person’s sinoatrial (SA) node. If a person has sinus bradycardia, their SA node is sending the impulses to start a heartbeat but ...

Atrial fibrillation and some less-common heart rhythms need to be excluded. It’s likely that you have “sinus tachycardia,” meaning that the impulse comes from the sinus node but is ...

Sinus node dysfunction (SND) comprises a variety of abnormalities consisting of sinus arrest, sinus bradycardia, sinoatrial block, and alternating episodes of tachycardia and bradycardia.

Mild or compensated heart failure. Ischemic heart or peripheral vascular disease. 1 st-degree AV block. Sinus node dysfunction. Conduction disorders (eg, Wolff-Parkinson-White). Monitor HR during ...