The diagnosis is sinus tachycardia, right ventricular pacemaker, P-wave synchronous ventricular pacing (A-sensed V-paced), pseudo second-degree AV block due to failure of atrial sensing. There is a ...

ICDs detect tachycardias imperfectly: An ICD-detected tachycardia may represent either a tachyarrhythmia (SVT or VT) or oversensing of nonarrhythmic electrical signals. ICDs also classify tachycardias ...

The rhythm is either sinus rhythm or not sinus rhythm. Sinus rhythm refers to the origination of the electrical activity coming from the sinus node — also known as the sinoatrial node, or SA node.

A 67-year-old man with acute anterolateral myocardial infarction had recurrent ventricular fibrillation that required insertion of temporary pacemaker. When a permanent pacemaker was inserted stable ...

During atrial fibrillation, the atrioventricular node is bombarded with electrical impulses, which typically result in rapid ventricular rates. The rate at which signals are transmitted to the ...

A 90 year old male with no past medical history to clinic with a complaint of generalized weakness, dizziness, and dyspnea on exertion. Mild lower extremity edema, paroxysmal nocturnal dyspnea, and ...