Which electrolyte imbalance is characterized by a low serum magnesium level and a high serum potassium level?

A Hypokalemic hypomagnesemia
B Hyperkalemic hypomagnesemia
C Hypomagnesemic hyperkalemia ✓
D Hypermagnesemic hypokalemia

Explanation

Hypomagnesemic hyperkalemia occurs when there is a low serum magnesium level, which can lead to a high serum potassium level due to impaired renal potassium excretion.

Source

Guyton and Hall Textbook of Medical Physiology
Electrolytes and Acid-Base Balance Electrolytes Magnesium and Potassium Imbalance Hard MEDICAL Confidence: medium