What is a common sign of hypokalaemia?

A common sign of hypokalaemia is skeletal muscle weakness and leg cramps. This condition, characterized by low levels of potassium in the blood, can significantly impact muscle function. Potassium is essential for proper muscle contraction and nerve signal transmission; therefore, when its levels are inadequate, patients often experience muscle weakness, fatigue, and cramping.

Muscle cells rely on potassium to maintain a stable electrical charge, which is critical for initiating and conducting nerve impulses that trigger muscle contraction. When potassium levels decrease, the excitability of the muscle cells may also be affected, leading to symptoms such as weakness and cramps, particularly in large muscle groups like the legs. Understanding these symptoms is essential for nurses in assessing patients with hypokalaemia and ensuring timely intervention to correct the electrolyte imbalance and prevent complications.