A patient presents with anaphylaxis requiring adrenaline She is markedly vasodilated Which substance is most likely to be responsible for this appearance?

A patient is brought into the ED unconscious Calculation from the venous blood gas confirms a low anion gap acidosis What is the most likely cause of this abnormality?

A 76 year old patient is found on examination to have an absent jaw jerk What cranial nerve nucleus is the1 most likely site of pathology?

You are conducting a study of children presenting with febrile convulsions. As pari of your data collection you record their temperature in degrees Celsius on arrival Which is the best description of this type of data?

A 40 year old woman taking the oral contraceptive pill was prescribed phenytom following a seizure Some months later she becomes pregnant What is the most likely mechanism by which this treatment has led to tailure of her contraception?