This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluids and Electrolyte Imbalance, Subject name: Medicine
All are useful for management of Hypermagnesemia except? 
Select and explain. 
A. Magnesium free enema, B. IV FLUID, C. Calcium gluconate, D. Amiloride
D: Amiloride
Answer: D: Amiloride 
Explanation: * Hypermagnesemia is seen rarely seen in the absence of renal insufficiency as kidneys can excrete a large load of magnesium. Management of Hypermagnesemia 1. Use of magnesium free cathaics may clear ingested magnesium from the gut. 2. Intravenous hydration will reduce chances of cardiac toxicity. 3. Temporary improvement will be provided by calcium gluconate. Amiloride is a diuretic and by causing loss of water from body will worsen the pre-existing hypermagnesemia.