This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Complications Of Anaesthesia, Subject name: Anaesthesia
[{'content': 'CNS affection of a local anesthetic agent leads to? \nSelect and explain. \nA. Convulsion, B. Perioral numbness, C. Depression, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans is 'd' i.e. All of the above Manifestations of local anesthetic toxicityA. Early symptoms (Prodrome)Circumoral numbness, dizziness, tongue paresthesia, restlesness, tinnitus, agitation.B. CNS symptoms These are biphasic i.e. excitation (convulsions, restlessness, agitation 8c tinnitus), followed by depression (drowsiness, disorientation, respiratory depression, unconciousness).C. Cardiovascular manifestationshypotension, cardiac arrest, coma", 'role': 'assistant'}]