The previous evening, a 59 year old man experienced an hour long episode of chest pain which resolved spontaneously. He has had no further chest pain, but encouraged by his family he presents to ED the next morning. A bedside cardiac troponin test is negative. This is his ECG taken at the same time.
A 22 year old woman with a past history of a seizure disorder presents to the ED with a 3 day history of progressive rash and fever. The rash began as macules and papules on the chest and neck and has now become blistered and eroded and involves the mouth and eyes. Her temperature is 39°C and she feels miserable
A 24 year old woman presents to ED with a 12 hour history of shortness of breath and left sided pleuritic chest pain. She has no significant past medical history and is on no regular medications. Her vital signs are normal.
A 36 year old man has just completed a marathon. He develops chest heaviness, shortness of breath, nausea and feels dizzy and faint. He has no known past medical history and considers himself to be in excellent health, regularly competing in long distance running events.
A 2 year old child is brought in by her mother. The child is limping and seemingly refusing to weight bear on the right leg. The mother is a little vague about what might have happened but wonders if her daughter was injured while playing with her older siblings out in the garden this afternoon. The child objects to you touching and moving her right lower leg.
An 83 year old man with a past history of Type 2 diabetes, hypertension and ischaemic heart disease has become progressively unwell over the last 5 days. His GP discovered a pneumonia on CXR and has been treating him with oral antibiotics for the last 3 days but his clinical condition has continued to worsen.
A 22 year old man has just returned from a surfing trip to Timor. While away he developed a fever, headache and generalised aches and pains. The fever settled for a day or two but has now returned and he has developed a rash. The aches and pains continue unabated. He feels miserable.
A 29 year old man stumbled into a gutter, tripped awkwardly and fell injuring his left foot. He has diffuse swelling and tenderness of the mid foot and is unable to weight bear on that limb.
A femoral arterial blood gas sample is obtained from a 41 year old man...obtained when the barometric pressure was 272mmHg and the PiO2 47mmHg