The ECG may simply show sinus rhythm or sinus bradycardia. This is different than a first-degree atrioventricular, or AV, block, which shows a prolonged PR interval. Second-degree sinoatrial exit ...

This guide explores the different types of bradycardia, focusing on: Sinus bradycardia Sick ... is categorized into three degrees: First-degree heart block: The electrical signals are delayed ...

including sinus pause, heart block, and cardiac arrest have occurred with the use of Toprol-XL. Increased risk for bradycardia in patients with first-degree AV block, sinus node dysfunction ...

such as sinus bradycardia, sinus arrhythmia, first-degree atrioventricular (AV) block, early repolarisation, incomplete right bundle branch block (IRBBB) and voltage criteria for left ventricular ...