Labels:text | screenshot OCR: Resident and Staff Physician Patient Education Chart Arrhythmias: Heart Block hiper * A delay or complete obstruction of the passage of the sinoatrial impulse to the ventricles Can occur in SA node, AV node, or bundle branch system * In complete heart block, the ventricles must be paced independently Reprinted with permission from Resident and Staff Physician (c) 1991-92, 1993 by Romaine Pierson Publishers, Inc.