Sinus Origin Reference Quick access library of annotated arrhythmias. Our arrhythmia guide covers over forty conditions. For each arrhythmia we include a sample rhythm strip as well as a summary of important attributes. To focus on a specific arrhythmia category, use the buttons below. Types All Sinus Atrial Junctional Ventricular Atrioventricular Pacemaker Normal Sinus Rhythm Sinoatrial Block Sinus Arrest Sinus Arrhythmia Sinus Bradycardia Sinus Tachycardia