For each scenario below, choose the most appropriate answer from the list above. Each option may be used once, more than once or not at all.

1. A 47 year old female presents to her GP with severe loin pain. On further questioning the patient complains of a 6 month history of recurrent fevers and vomiting with more recent generalised weakness and pain in some of her joints. A subsequent blood test shows hypokalaemia.

2. A 20 year old medical student presents to his GP with bowel disturbances. He recently returned from holiday in Thailand. Blood tests reveal that he is hypokalaemic.

3. A junior doctor received a blood report from the pathology lab for a 50 year old male who was recovering from an inguinal hernia repair. The report described the patient as being hyperkalaemic. Most of the porters at the hospital were on strike at the time.

4. An 82 year old female presents to A&E feeling short of breath and thinking that she is having a heart attack, shortly after arriving in Heathrow. Six days later, on the ward, she feels weak and has abdominal pain. Blood tests show a potassium of 6.2mmol/L.

5. A 72 year old male is referred to cardiothoracic surgery outpatients following an episode of unconsciousness. The patient had an aortic valve replacement operation 5 years ago. Following investigation the valve is found to have malfunctioned. A blood test shows that the patient is hyperkalaemic.