OSCE: actor and procedure stations11 / 22
Counselling for awake intubation after a previous failed intubationActor: 41-year-old woman, BMI 42, booked for elective laparoscopic cholecystectomy
From memory: the diagnosis and the notes are hidden. Answer each question aloud, then press Show.
Know this first
- Awake intubation: high success and good safety; fails in 1–2%, rarely needing rescue.
- sTOP: sedation (optional), topicalisation, oxygenation, performance.
- Topical lidocaine limit: 9 mg/kg of lean body weight; oxygen throughout.
- Remifentanil TCI 1–3 ng/mL; avoid boluses.
- Three attempts plus one by a more experienced operator; induce only after the two-point check.
The patient
Actor: 41-year-old woman, BMI 42, booked for elective laparoscopic cholecystectomy.
A letter from another hospital records a failed intubation; she was woken and surgery abandoned.
She is anxious and asks to be asleep before anything is done.
Task: explain and gain consent for awake tracheal intubation.
The examiner asks
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Open
How do you start?
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- I'm meeting a woman with a past failed intubation before her gallbladder surgery, to plan an awake intubation. Patient
- Can you tell me what happened last time, and what you remember? Communication
- That sounds frightening. Thank you for bringing the letter; it helps keep you safe.
Explain
Explain what you recommend and what she will feel.
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- Because the tube was so hard to place before, the safest way is while you're awake. (Communication)
- You keep breathing for yourself throughout, so you're never left unable to breathe.
- We numb your nose and throat with sprays, and give a little sedation to relax you.
- A thin camera guides the tube through your nose. You'll feel pressure, maybe a cough.
- Oxygen runs the whole time. Once we see the tube is right, we put you to sleep.
- It works in about 98 or 99 out of 100 people.
Respond
She says: 'Last time was awful. Please just put me to sleep.'
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- I understand you don't want to be awake for any of it after last time. (Communication)
- Putting you to sleep first could leave us unable to get oxygen in. That's the danger.
- Staying awake keeps you breathing, and that is exactly what makes this safe.
Respond
She asks: 'And what if it doesn't work?'
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- We stop after a few tries, with a senior colleague making the last one. (Communication)
- You'd still be breathing, so we can stop safely while you're awake.
- Then we'd postpone, or use a neck airway under local anaesthetic; we'd agree that beforehand.
Close
How do you close?
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- Shall we go ahead awake? You can ask questions or stop at any point. Communication
- If you'd rather not, we postpone and talk again. We won't proceed against your wishes.
- I'll document this discussion and your consent.
- Afterwards she gets an airway alert letter, and her record is flagged. After surgery
Fatal mistakes
- Agreeing to induction and a relaxant before securing the airway.
- Hiding the backup plan.
- Proceeding after she refuses.
Checked against: Difficult Airway Society guidelines for awake tracheal intubation (ATI) in adults (2020)
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