Which Statement by a Patient on Dialysis, Taking Gentamicin (Garamycin)

Multiple Choice

Which statement by a patient on dialysis, taking gentamicin (Garamycin) , should cause the nurse the most concern?

A) "I have a horrible headache."
B) "Speak up! I can't hear you."
C) "I've had diarrhea once or twice today."
D) "I'm thirsty.I can't get enough water."