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 ?
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
Etomidate
Thiopental sodium
Propofol
Ketamine