This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
[{'content': 'Prolonged QT interval is not seen in? \nSelect and explain. \nA. Hypokalemia, B. Hypocalcemia, C. Hypomagnesemia, D. Hypercalcemia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hypercalcemia: The most common ECG findings of hypercalcemia are a sho QT interval secondary to a shoened ST segment. There may also be a widened or flattened T wave; however, significant hypercalcemia can cause ECG changes that mimic an acute myocardial infarction Ref Harrison 20th edition pg 1534', 'role': 'assistant'}]