BOF: 56
A 45-year-old male is referred to the hypertension
clinic. Control of his blood pressure has been difficult despite use of
beta-blockers and ACE inhibitors.
The patient had been told to stay off drugs and when he
attended the clinic he was found to have a blood pressure of 190/110
Examination of the fundus showed a grade II retinopathy
but other than this examination was unremarkable
Investigations
Sodium 148 mmol /L
Potassium 3.1 mmol/L
Bicarbonate 32 mmol/L
Urea 4.2 mmol /L
Glucose 3.9 mmol/L
In this patient which one of the following would you
arrange next?
a)
Aldosterone ratio: plasma renin activity
b)
24 urinary cortisol
c)
High dose dexamethasone suppression test
d)
MR angiogram of renal vessels
e)
PTH assay