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
Hyperkalemia shows the following changes in ECG, except 
Select and explain. 
A. Increased T wave amplitude, B. Prolonged PR interval, C. ST depression, D. Prolonged QRS duration
C: ST depression
Answer: C: ST depression 
Explanation: None