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: Physiology
[{'content': 'Which of the following is NOT TRUE about ECG changes in hyperkalemia? \nSelect and explain. \nA. Peaked P-wave, B. Peaked T -wave, C. Sinusoidal shape complex, D. Broad QRS Complex', 'role': 'user'}, {'content': 'Answer: A \nExplanation: With mild to moderate hyperkalemia, there is reduction of the size of the P wave and development of peaked T waves. Severe hyperkalemia results in a widening of the QRS complex, and the ECG complex can evolve to a sinusoidal shape.', 'role': 'assistant'}]