Hyperkalemia (High Potassium)
What Causes Hyperkalemia?
Hyperkalemia is a condition caused by an abnormally high concentration of potassium in the blood. Potassium is a key element in contraction of muscles (including the heart) and for the functioning of many complicated proteins (enzymes). Potassium is found primarily in the skeletal muscle and bone, and participates with sodium to contribute to the normal flow between the body fluids and the cells of the body (homeostasis). The concentration of potassium in the body is regulated by the kidneys, and balance is maintained through excretion in urine. When the kidneys are functioning normally, the amount of potassium in the diet is usually sufficient for use by the body and the excess is excreted. Chemical and hormonal influences also help regulate the internal potassium balance. When hyperkalemia occurs, there is an imbalance resulting from a dysfunction of these normal processes.