Fluid and Electrolytes

Diagram of the sodium–potassium pump across a cell membrane, showing ATP-driven transport of three sodium ions out of the cytosol and two potassium ions into the cytosol.

Hyperkalaemia and Hypokalaemia

Infographic comparing normal sodium and water balance, with balanced water movement into and out of a cell versus hyponatremia showing water moving into the cell.

Hypernatraemia and Hyponatraemia

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