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: Dental
[{'content': 'Which of the following is the definition of conscious sedation? \nSelect and explain. \nA. A minimally depressed level of consciousness that retains the patient’s ability to independently and continuously maintain an airway and respond appropriately to physical stimulation or verbal command., B. A significantly depressed level of consciousness that retains the patient’s ability to independently and continuously maintain an airway and respond appropriately to physical stimulation or verbal command., C. A minimally depressed level of consciousness that retains the patient’s ability to independently and continuously maintain an airway., D. A significantly depressed level of consciousness that retains the patient’s ability to independently and continuously maintain an airway.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Conscious sedation is defined as a minimally depressed level of consciousness as opposed to deep sedation or general anesthesia. Remember that there are four stages of anesthesia (analgesia → delirium → surgical anesthesia\xa0→ respiratory paralysis) and only in the first stage (analgesia) is the patient conscious. The patient should be able to maintain an airway and respond to stimulation and command.', 'role': 'assistant'}]