system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
During surgery for aortic arch aneurysm under deep hypothermic circulatory arrest, which of the following anesthetic agent administered prior to circulatory arrest that also provides cerebral protection ?
assistant
The correct answer is  Thiopental, etomidate and propofol, all three are cerebroprotective. However, thiopental has maximum cerebroprotective action.
"Propofol and etomidate appear to lack the same protective effects as thiopental in focal cerebral ischemia"   ─ Morgan