Hypokalemia

Hypokalemia is a medical condition characterized by lower than normal levels of potassium in the circulating blood. Potassium, an essential electrolyte, plays a crucial role in a range of vital physiological processes, including nerve cell function, muscle cell contraction, and maintaining heart rhythm.

ECG Pattern Of Hypokalemia

Clinical Manifestations

Hypokalemia (CardioNetworks ECGpedia)

Symptoms of hypokalemia can vary from mild to severe, depending on the severity of potassium depletion. They can include muscle weakness, fatigue, muscle cramps, constipation, and palpitations. In severe cases, it may cause serious cardiac arrhythmias or paralysis.

Causes and Risk Factors

Hypokalemia may arise due to inadequate potassium intake, increased potassium loss (through the kidneys or gastrointestinal tract), or a shift of potassium from the bloodstream into cells. Common causes include certain medications (like diuretics), chronic kidney disease, diarrhea, excessive sweating, and certain hormonal disorders.

Diagnosis

The diagnosis of hypokalemia is based on blood tests revealing low serum potassium levels. Additional investigations, such as electrocardiography (ECG), may be carried out to assess the impact of hypokalemia on heart function.

Treatment and Management

Management of hypokalemia involves treating the underlying cause, if identifiable, and replacing the deficient potassium. This can be achieved through dietary measures, oral potassium supplements, or in severe cases, intravenous potassium.

See Also

• Potassium
• Electrolyte imbalance
• Diuretics

References

Hypokalemia Resources
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