Electrical Signals


Hearts have several electrical currents running throughout them. The sinus node, often called the heart’s natural pacemaker, contains the most active electrical cells and initiates heartbeats.


Other electrical nodes found in the heart are responsible for transmitting signals to different sections of the heart.


Problems in an electrical node or anywhere along the electrical pathway can disrupt the regular beating of the heart and cause different types of arrhythmia.


For example, the atrioventricular (AV) node transmits signals from the atria to the ventricles. Disruptions within this pathway causes a disorder known as AV nodal reentrant tachycardia, which causes the heart to beat too fast.


Another type of abnormal electrical pathway between the atrial and ventricles can lead to a congenital syndrome that causes the heart to beat too fast. This syndrome is known as Wolff-Parkinson-White Syndrome.