Definition for Hyperkalemia
From Biology Forums Dictionary
Hyperkalemia is a medical condition characterized by elevated levels of potassium in the blood. Depending on the amount of potassium involved, this condition can be life threatening, and it requires medical treatment to eliminate the excess potassium and uncover the underlying cause. Many people discover that they have hyperkalemia in a routine medical examination, when blood testing reveals unusually high levels of potassium in the blood. Early detection can prevent long-term problems.
Broken down into its root words, “hyperkalemia” literally means “excessive potassium in the blood.” A number of things can lead to this condition, including kidney failure, the use of certain medications, problems with the adrenal glands, excessive intake of potassium, and conditions which cause the cells to release potassium such as a medical problem which leads to widespread cell death. Under normal conditions, the body regulates potassium levels by expressing potassium in the urine, uptaking potassium in the cells, or vomiting when too much potassium has been consumed.
Potassium is an important mineral in the body. It helps to regulate muscle movement, which is why people recommend taking potassium for muscle cramps, as the increased potassium can help the muscle relax. However, when potassium levels get too high, they can cause problems with muscle function, leading to muscle weakness and fatigue. Most critically, excessive potassium leads to arrhythmias, eventually causing a heart attack. In fact, the mineral is so good at causing heart attacks that potassium chloride is used in lethal injections.