Hypokalemia in the elderly

Serum potassium levels of 3.5mmol / L, and those with normal or reduced overall potassium are called hypokalemia. Many diseases can be accompanied by changes in blood potassium, and the safety range of blood potassium changes is very small. Whether low or high potassium can cause serious dysfunction of the body, or even cardiac arrest, it is one of the important factors causing death in many diseases .

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