General Anaesthesia & Airway MCQs

Anaesthesia · 6 free questions with answers & explanations.

1. A 42-year-old male with a Mallampati class III airway, a thyromental distance of 5 cm, and a mouth opening of 3 cm is scheduled for elective cholecystectomy. Which single airway feature is the MOST reliable predictor of a difficult laryngoscopy in this patient?
2. During rapid sequence induction with succinylcholine, a patient develops masseter muscle rigidity immediately after drug administration. Bag-mask ventilation is easy, and SpO2 remains 99%. What is the MOST appropriate next step?
3. A patient is anaesthetised using a circle breathing system. At the end of the case, the inspired sevoflurane concentration is zero but the patient is not waking up. Capnography shows a flat CO2 waveform despite the ventilator cycling. Which of the following is the MOST likely explanation?
4. A 68-year-old woman requires emergency intubation. She has a full stomach and is haemodynamically unstable. Which induction agent is MOST appropriate to attenuate the hypertensive response to laryngoscopy while preserving cardiovascular stability?
5. Which of the following changes occurs in the functional residual capacity (FRC) immediately after induction of general anaesthesia in a healthy adult?
6. During direct laryngoscopy with a Macintosh blade, the tip of the blade is placed in the vallecula and upward force is applied. This manoeuvre indirectly lifts the epiglottis to expose the glottis via which anatomical structure?