A first-degree, or 1 st degree, AV block is indicated on the ECG by a prolonged PR interval, as seen below. Recall that the P wave indicates atrial depolarization, initiated by firing of the SA node.

Healthcare professionals may also call this condition first-degree atrioventricular (AV) block. It is a type of arrhythmia, or abnormal heartbeat. There are three degrees of heart block — first ...

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 ...

Methods:Of 668 consecutive patients with symptomatic type II second- or third-degree AV block, 2:1 AV block, atrial fibrillation, and bradyarrhythmia, 108 patients (62 patients enrolled ...

Less than 5% of patients developed first-degree AV block or intraventricular conduction defect and the occurrence of side effects was not related to dose. [23] In our study, propafenone-related AV ...