This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Electrocardiography, Subject name: Medicine
[{'content': 'ECG finding of Hyperkalemia: \nSelect and explain. \nA. T wave inversion, B. ST depression, C. P pulmonale, D. Wide QRS complex', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans.(d) Wide QRS complexRef: Harrison 19th ed. / 310ECG Findings of Hyperkalemia* The first ECG finding in hyperkalemia is tall tented T waves followed by slowing of depolarization of heart.* This results in prolonged PR interval with QRS widening.* Subsequently the P waves start becoming smaller.* Sine wave pattern leading to ventricular fibrillation/ diastolic arrest of heart.', 'role': 'assistant'}]