A 75 year old woman has sudden onset left-sided chest pain and breathlessness for 1 hour on the orthopaedic ward. She also had one episode of haemoptysis. She had a total hip replacement 3 days ago. Her temperature is 37.2°C, pulse rate 100 bpm, BP 132/78 mmHg, respiratory rate 22 breaths per minute and oxygen saturation 92% breathing air. Chest examination is normal. Which is the most appropriate diagnostic investigation?

A 75 year old woman has sudden onset left-sided chest pain and breathlessness for 1 hour on the orthopaedic ward. She also had one episode of haemoptysis. She had a total hip replacement 3 days ago. Her temperature is 37.2°C, pulse rate 100 bpm, BP 132/78 mmHg, respiratory rate 22 breaths per minute and oxygen saturation 92% breathing air. Chest examination is normal. Which is the most appropriate diagnostic investigation?

A 6 year old girl has an itchy, red rash with yellow crusting on her face and neck. Which is the most likely diagnosis?

A 54 year old man has swelling of both ankles and is seen in the GP surgery. He has hypertension and takes amlodipine. Which is the most likely cause of his ankle swelling?

A 75 year old woman has three episodes of dizziness followed by collapsing to the floor. Which is the most appropriate diagnostic investigation?

A 74 year old man has a severe headache of sudden onset and is seen in the Emergency Department. He has mild left-sided weakness. Which is the most likely diagnosis?