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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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All are ECG changes hypokalemia,except-
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The correct answer is  Multiple medications, electrolyte abnormalities (hypocalcemia, hypomagnesemia and hypokalemia) and ceain disease states (ie, intracranial hemorrhage) can prolong the QT interval. Prolonged QT genetic syndromes exist and include Romano-Ward syndrome, Jervell-Lange-Nielsen syndrome and long-QT syndrome. Ref Harrison 20th edition pg 1445