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You are the consultant at a coastal base hospital. You receive a BAT call from the ambulance. They are bringing in a 35-year-old male scuba diver who became acutely unwell on surfacing from a dive. He is confused and complaining of visual loss. His obs are as follows:

  • GCS 14
  • HR 140
  • BP 100/55
  • RR 40
  • Sats 92% on 10L/min NRBM

1. What is the most likely diagnosis? 1 mark

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2. List (3) other differential diagnoses. 3 marks

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3. List (2) risk factors for arterial gas embolism. 2 marks

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4. Outline (6) steps in your immediate management of this patient. 6 marks

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