Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Hyperkalemia is a condition characterized by an abnormally high concentration of potassium ions (K+) in the blood. It can disrupt normal heart rhythms and neuromuscular function.
An essential mineral that plays key roles in cell function, nerve transmission, and muscle contraction.
Electrolyte: Substances that become ions in solution and acquire the capacity to conduct electricity; potassium is one such electrolyte.
ECG changes: Alterations in the electrical activity of the heart as recorded by an electrocardiogram, often seen with hyperkalemia due to its effect on cardiac muscle function