A 25-year-old man arrives by ambulance to your ED following a suspected overdose. He wasfound at home, unconscious, with pinpoint pupils and shallow respiration. Paramedics treated him with 400mcg naloxone IM injection with good response. En route to your tertiary ED, he became drowsy again. His current observations are :

  • GCS 11
  • RR 8 breaths per minute
  • BP 140/70
  • Sats 94% RA

Opioid overdose

1. Outline your (4) management priorities for this patient. 4 marks

2. What is the main abnormality demonstrated? 1 mark

3. What is the likely cause in this patient? 1 mark

4. List (4) other causes of this ECG abnormality. 4 marks

5. List (2) reasons a standard urine drug screen would NOT be useful in THIS patient. 2 marks