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. 1950 Mar;72(3):133–141.

CLINICAL POTASSIUM PROBLEMS

Helen Eastman Martin, Maxine Wertman, Leola Westover, D G Simonsen, John W Mehl
PMCID: PMC1520332  PMID: 15405024

Abstract

Alterations in serum potassium are common in many diseases. In a series of 390 determinations of serum potassium, the levels found were low in 24 per cent and high in 2.6 per cent.

The major causes of low serum potassium are (1) decreased potassium intake due to intravenous feedings which do not contain potassium; (2) increased loss of potassium in the urine due to accelerated tissue breakdown, or renal lesions; (3) loss from the gastrointestinal tract due to diarrhea, or fistulae, and (4) shift between serum and cells, due to metabolic causes, drugs or changes in pH.

The major cause of high serum potassium is uremia with renal retention.

Clinical symptoms and signs of low body potassium include muscle weakness and paralysis, which may lead to death in respiratory failure if not corrected, tachycardia, gallop rhythm, dilatation of the heart. The electrocardiogram shows inverted, low amplitude, or isoelectric T waves and a prolonged QT interval.

Potassium chloride orally, subcutaneously or intravenously is recommended for use in the treatment of potassium deficits. It should not be used in the presence of oliguria or anuria or dehydration. The amounts of potassium necessary to correct deficits vary widely and cannot be predicted from the serum level. Special reference is made to the prevention and therapy of potassium deficits in diabetic acidosis.

High serum potassium levels are difficult to correct. Suggested measures are administration of glucose, insulin or calcium, gastric or peritoneal lavage or use of the artificial kidney.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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