An unpremedicated healthy adult requires insertion of a laryngeal mask airway without neuromuscular blockade. The induction agent best suited because of its profound suppression of airway reflexes is:
- A Thiopentone
- B Propofol ✓
- C Etomidate
- D Ketamine
Correct answer: B. Propofol
Explanation
Propofol depresses pharyngeal and laryngeal reflexes to a greater degree than any other induction agent, permitting smooth LMA insertion in spontaneously breathing patients. Etomidate frequently causes myoclonus and coughing, thiopentone leaves airway reflexes relatively intact until deeper levels are reached, and ketamine preserves protective reflexes while increasing salivary secretions, all of which make LMA insertion less reliable.
Reference: Miller's Anesthesia, 9th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.