Another angry drunk

It’s Friday night, a 19-year-old male who alleges he’s been assaulted is shouting / being aggressive in the waiting area. The triage nurse asks you to discharge him.
A 10-year-old girl presents with lethargy, vomiting, headaches and an unsteady gait. She collapsed at home a few hours prior to arrival at your ED.
A 47-year-old man presents to the ED after being thrown off his horse.
An 18-year-old female is brought into the ED following a head-on collision with another car with a combined speed of approximately 100mph.
A 27-year-old man is brought to the ED by ambulance after having two seizures. He has no known health problems.
A 60-year-old female patient presents to the ED with gradual-onset right-sided thigh and hip pain.
A 22-year-old South Asian male presents with 2 episodes of haemoptysis on a background of anorexia, weight loss and a dry cough for 2 months.
A frail elderly female is brought to the emergency department following two episodes of “coffee-ground vomit”.
A 35-year-old presents with right sided headache, photophobia and vomiting progressing to left homonymous hemianopia and left sided numbness.
A 45-year-old man develops methemoglobinemia after an incidence of eating his own faeces.
A 45-year-old woman presents with 24 hour history of right sided frontal headache with progressive worsening of vision.
Your pre-alert phone rings to warn you that a 30-year-old male will be arriving in five minutes, having been found collapsed with blue lips and recordable oxygen saturations.