Which intravenous anaesthetic can be used for upper airway manipulation in absence of neuromuscular blockers-: (A) Thiopentone, (B) Propofol, (C) Etomidate, (D) Ketamine
Answer is B. Propofol - induced depression of upper airway reflexes exceeds that of any other agent thus allowing intubation, endoscopy or laryngeal mark placement in absence of neuromuscular blockers. ketamine preserve upper airway reflexes.