Medically reviewed by Richard N. Fogoros, MD Ventricular tachycardia (V-tach or VT) is when the lower chamber of the heart ...

Sick sinus syndrome is the leading indication ... On rare occasions, ischemia to the SA node or other infiltrative disease can cause SSS.

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

Importantly, transcription factors in the sinus node lost rhythmicity following the sustained β-adrenergic blockade ... this study has implications for treating and preventing adverse cardiovascular ...

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 ...

Increased heart rate is associated with increased cardiovascular risk in the general population, and in those with coronary artery disease ... by acting on the sinus node, and can be used with ...