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: Anaesthesia
[{'content': 'The administration of succinylocholine to a paraplegic patient led to the appearance of dysarrhythmias, conduction abnormalities and finally cardiac arrest. The most likely cause is \nSelect and explain. \nA. Hypercalcemia, B. Hyperkalemia, C. Anaphylaxis, D. Hypermagnesemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Hyperkalemia', 'role': 'assistant'}]