A Client with Parkinson Disease Asks the Nurse Why Dopamine

A client with Parkinson disease asks the nurse why dopamine is not given as a neurotransmitter replacement.Which response by the nurse is the most appropriate?

A) The risk for hypertension is too high with dopamine; therefore,more frequent cardiac monitoring would be required."
B) Exogenous dopamine cannot cross the blood-brain barrier and would be of little use."
C) Exogenous dopamine must be administered via intravenous infusion,which usually requires a central line and continuous cardiac monitoring."
D) In older clients,the effects of dopamine on urinary function can pose an unacceptable risk for renal failure."