Sinus tachycardia is recognized on an ECG with a normal upright P wave in lead II preceding every QRS complex. This indicates that the pacemaker is coming from the sinus node and not elsewhere in ...

The use of pacing therapy for sinus node dysfunction, AV block, and bundle branch block are discussed below and summarized in Table III. Potential future uses for pacing therapy are discussed in ...

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

Advanced second- or third-degree AV block, with symptomatic bradycardia, ventricular dysfunction or low cardiac output. Sinus node dysfunction with symptoms during age-inappropriate bradycardia.

The actual cause of sick sinus syndrome is related to replacement of the sinus node with fibrinous tissue. This usually occurs concomitantly with similar changes throughout the entire conduction ...

Initially one 0.1mg/day patch weekly; may increase after 1–2 weeks; max 0.6mg/day. Sinus node dysfunction. AV block. Pheochromocytoma: not effective. Conduction disturbances. Renal dysfunction.

Normally, the heart's electrical impulse starts from a bundle of cells called the sinus node, which is located in the heart's upper right chamber, or right atrium. This stimulates the upper ...

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