This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'The following ECG findings are seen in hypokalemia: March 2013 \nSelect and explain. \nA. Increased PR interval with ST depression, B. Increased PR interval with peaked T wave, C. Prolonged QT interval with T wave inversion, D. Decreased QT interval with ST depressioz', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Increased PR interval with ST depression Hypokalemia Associated with: - Diuretics Thiazide, Bumetanide, Furosemide, Ethacrynic acid - Theophylline intoxication, - Coisol, - Villous adenoma of colon etc. - ECG changes of hypokalemia: - ST segment depression, - Increased U wave amplitude etc.', 'role': 'assistant'}]