The patient with acquired immunodeficiency syndrome who has been noncompliant with highly active antiretroviral therapy (HAART) presents to the emergency department with a productive cough, fever, night sweats, and weight loss. The patient’s chest x-ray reveals diffuse infiltrates bilaterally and the CD4 count is 182 cells/µL. Which question by the nurse is most important?  

The 7-year-old child with pica is brought to the emergency room (ER) with decreased level of consciousness after ingesting lead paint. His blood lead level (BLL) is determined to be 72 mcg/dL. The nurse prepares to administer which medication?

A patient is receiving IV vancomycin for gram-positive sepsis. The nurse notes the patient’s vancomycin trough is 28 mcg/mL. The patient is due for a dose. Which action by the nurse is most appropriate?