Sinus Origin Reference 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 AV Pacemaker Normal Sinus Rhythm Sinoatrial Block Sinus Arrest Sinus Arrhythmia Sinus Bradycardia Sinus Tachycardia Sinus Origin EKG Reference Guide