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== Clinical features == | == Clinical features == | ||
Symptoms are more severe if the drop in serum potassium is rapid than if it is chronic. Mild hypokalaemia is usually asymptomatic. Moderate hypokalaemia can cause muscle weakness, constipation, ileus, and restless legs. Severe hypokalaemia can cause arrhythmia, rhabdomyolysis, and paresis. Hyporeflexia is a possible sign. | Symptoms are more severe if the drop in serum potassium is rapid than if it is chronic. Mild hypokalaemia is usually asymptomatic. Moderate hypokalaemia can cause muscle weakness, constipation, ileus, and restless legs. Severe hypokalaemia can cause arrhythmia, rhabdomyolysis, and paresis. Hyporeflexia is a possible sign. | ||
Severe hypokalaemia can cause ECG changes: | Severe hypokalaemia can cause ECG changes: | ||