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
[{'content': 'Not a cause of Hypomagnesemia: \nSelect and explain. \nA. Gitelman syndrome, B. Re-feeding syndrome, C. Hyperaldosteronism, D. Rhabdomyolysis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: * Gitelman is a defect of DCT where TRPM6 receptor for magnesium reabsorption is present and is defective leading to Hypomagenesemia * In Re-feeding syndrome seen with starvation, provision of nutrition in form of substrates will lead to cellular consumption leading to rapid shift of magnesium from extracellular fluid to intracellular compaments. * Hyperaldosteronism will lead to expansion of plasma volume and resultant fall of magnesium. * In Rhabdomyolysis cell destruction will lead to Hypermagnesemia.', 'role': 'assistant'}]