The patient is receiving intravenous gentamicin to treat a gram-negative infection. The nurse draws a gentamicin trough level immediately prior to the 4th dose; the result is 2.2 µg/mL. Which of the following conclusions would be most appropriate given this result?

The 32-year-old patient presents complaining of severe itching on the arms that has gotten worse as her job has gotten more stressful. Upon assessment, the nurse observes erythematous lichen patches on the arms and in the antecubital fossa, where it is fissured and weeping. The nurse anticipates providing education about which medication?  

The nurse is preparing the patient for an ophthalmoscopic exam in which cyclopentolate drops must be instilled to allow for better visualization of the retina. Which characteristics, if present in the patient’s medical history, prompt the nurse to hold the drops and contact the provider for further instruction? Select all that apply.