The electrocardiogram most be affected by abnormally slow repolarization of ventricles SA node.
Repolarization occurs because of an growth in potassium permeability. on the SA node, potassium permeability may be further enhanced through vagal stimulation. This has the effect of hyperpolarizing the cellular and decreasing the charge.
The T wave represents ventricular repolarization. The T wave reveals a high quality deflection. The motive for that is that the ultimate cells to depolarize inside the ventricles are the primary to repolarize.
The SA node generates an electrical sign that causes the top coronary heart chambers to settlement. The signal then passes thru the AV node to the decrease heart chambers, causing them to contract, or pump. The SA node is considered the pacemaker of the coronary heart.
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