A client has a continuous IV infusion of dopamine and an IV of normal saline at 50ml/hour. The nurse noes that the client's urinary output has been 20ml/hour for the last two hours. Which intervention should the nurse initiate?
A. stop the infusion of dopamine
B. change the normal saline to a keep open rate
C. replace the urinary catheter
D. notify the healthcare provider of the urinary output.