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
The following ECG findings are seen in hypokalemia: March 2013 
Select and explain. 
A. 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
A: Increased PR interval with ST depression
Answer: A: Increased PR interval with ST depression 
Explanation: 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.