A patient (weight 64.9 kg) requires cardiac support due to advanced heart failure. The patient is prescribed dopamine infusion at a rate of 10mcg/kg/min. The pharmacy stocks 5 ml vials of dopamine 160 mg/ml solution.

i) How much of the stock dopamine solution and D5W diluent would you need to prepare 250 ml of a 3.2 mg/ml solution? (2 marks)

ii) At what rate (ml/min) would you instruct the nurse to administer the prepared solution? (2 marks)