Potassium is one of the intracellular cation. Any derangement of potassium serum levels can disturb the transmembrane potential and renders excitable cells (nerve and muscle) hyperpolarized and less excitable. However, cardiac cells don't obey this rule and become hyperexcitable. Potassium regulation is essential to maintain a normal activity in cells. Any imparment in potassium serum levels will have severe consequences on several organs especially the heart and the nervous system.
Hypokalemia differential diagnosis
Hyperkalemia differential diagnosis
Hypocalcemia differential diagnosis
Hypernatremia differential diagnosis
Hypercalcemia differential diagnosis
Hyperkalemia risk factors
Hypokalemia causes
Hypomagnesemia other diagnostic studies