![]() Severe hyperkalemia and hypokalemia can threaten life, and immediate diagnosis and treatment are required. In authoritarian states, cardiac arrest occurs in systole. In hypokalemia conditions (potassium levels become lower than 3.5 mmol/L), the cardiac cells hyperpolarise with a reduction in muscular contraction, heart rate, and blood pressure. In hyperkalemia conditions (potassium levels become higher than 5 mmol/L), the cardiac cells depolarise with almost no regular repolarization, which causes muscular weakness and in severe states, causes cardiac arrest in diastole. Therefore, increasing plasma potassium reduces this ratio, as a result, increases cell membrane excitability. Membrane resting potential is related to the difference between intracellular and extracellular potassium concentrations. Its increase or reduction has profound effects on the electrophysiology of cardiac muscle. The electrical stability of the heart is sensitive to potassium concentration. One essential electrolyte that impact transmembrane potential in cardiac cells is potassium concentration. A significant ratio of cardiac arrests in adult patients with no coexisting cardiac disorder is due to metabolic abnormalities. Nowadays, ECG changes are one of the useful diagnostic clues for recognizing electrolyte abnormalities. Myocardial cells keep up their activity of depolarization and repolarization, by developing several essential electrolytes like potassium, sodium, and calcium their currents across the membrane can be announced by ECG. Manifestations change in hyperkalemia, for correct diagnosis clinical history of the patients is essential. ECG Changes in severe hyperkalemia that can endanger patients’ lives are noteworthy. ![]() The studies showed peaked T wave, as well as expanded QRS complex and low P amplitude, are important changes that can guide us to immediate diagnosis. Moreover animal studies on ECG changes related to hyper- and hypokalemia are provided. In this review, we summarized ECG changes related to hyperkalemia and interventions. ![]() The current review summarizes studies to elucidate the correlation between potassium disorders and ECG demonstrations. Potassium disorders, including hyperkalemia and hypokalemia in authoritarian states, may lead to heart dysfunctions and could be life-threatening, and urgent interventions are needed in this conditions. ![]() Potassium is one of the essential electrolytes in cardiac cells, and its variations affect ECG. Nowadays, electrocardiogram (ECG) changes are one of the valuable diagnostic clues for recognizing abnormalities. ![]()
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