1. Secure the ABCs.
  2. Consider or give naloxone, glucose and thiamine.
  3. Get a pregnancy test.
  4. Assume the worst: rule out serious disease.
  5. Do not send unstable patients to radiology.
  6. Look for the common red flags.
  7. Trust no one, believe nothing (not even yourself ): check lab results and rethink clinical decisions.
  8. Learn from your mistakes.
  9. Do unto others as you would your family (and that includes coworkers).
  10. When in doubt, err on the side of the patient.

Source: Life in the Fast Lane Blog, with root source being  ‘Ten commandments of Emergency Medicine’ in 1991 Published in the Annals of Emergency Medicine by  Wrenn and Slovis