Electrical Conduction of The Heart

This nursing cheatsheet will help you learn about the intricate electrical conduction system of the heart. The heart's rhythmic contractions are orchestrated by a complex network of electrical signals. Beginning in the sinoatrial (SA) node, the electrical impulse travels through the atria, stimulating muscle contraction. The atrioventricular (AV) node then delays the signal briefly, allowing the ventricles to fill before contracting. As the impulse journeys through the bundle of His and Purkinje fibers, it triggers ventricular contraction. Understanding this electrical conduction system is fundamental for healthcare professionals, enabling them to interpret electrocardiograms (ECGs) and diagnose cardiac conditions accurately. This cheatsheet serves as a concise reference, breaking down the key elements of cardiac conduction, fostering a comprehensive grasp of the heart's electrical orchestration for effective patient care.