A nurse is collecting data from a client who has pyelonephritis and is receiving gentamicin via IV infusion. Which of the following manifestations should the nurse identify as an adverse effect of the treatment?

c. New onset of hearing loss. When collecting data from a client who is receiving gentamicin via IV infusion, the nurse should identify new onset of hearing loss as an adverse effect of the treatment¹. Gentamicin can cause vestibulocochlear nerve damage, which can affect hearing and balance¹.