Prolonged QRS, Presence of U wave, ST segment depression
When the potassium levels in the blood are low, it is known as hypokalemia. Symptoms include fatigue, nausea, excessive urination, and muscle weakness. Hypokalemia alters the resting membrane potential, resulting in hyperpolarization and changes in electrolytes. Prolonged QRS complex, presence of a U wave, and ST segment depression are caused by hyperpolarization, which is found in hypokalemia. Loss of the P wave and peaked T waves are both seen in hyperkalemia.