The clinical estimation of potassium balance generally depends onthe level of serum
potassium. Since the extracellular fluid contains only 2 percent of the total body potassium, it …

Potassium is the most abundant exchangeable cation in the body. It exists predominantly in
the intracellular fluid at concentrations of 140 to 150 meq/liter and in the extracellular fluid at …

• The total amount of body potassium can change tremendously without disturbing
potassium metabolism. Potassium depletion, a decrease in content in relation to capacity …

The major cation of the extracellular fluid is sodium, and its main function is to maintain the
tonicity and, therefore, the volume of body fluids. By contrast the major cation of the …

Total body potassium is about 50 mEq per kg of body weight, or 3500 mEq in a 70 kg
person. Potassium is by far the most abundant intracellular cation and approximately 98 per …

In healthy individuals wide variations in potassium intake produce only small changes in
total body potassium con-tent, or in plasma potassium concentration. Typically, ade-quate …

Potassium (K+) is the major intracellular cation. The total K+ content of the body averages
3500 mEq (50 mEq/kg body weight), 90% of which is intracellular. About 8% of the total body …

Potassium homeostasis is regulated both by potassium excretion (primarily by the kidneys
and to a smaller extent by the gut) and by potassium distribution regulated primarily by …

An attempt has been made to integrate new findings relevant to potassium metabolism in
health and disease with previously known facts. Particular emphasis has been placed on the …

Most of filtered K+ is reabsorbed passively in the proximal tubule since the tubular fluid (TF):
plasma (P) concentration ratio is almost identical to the equilibrium value calculated from the …