The 21-year-old patient with a body mass index of 10.1 undergoes placement of a peripherally inserted central catheter (PICC) at 1000 and total parenteral nutrition (TPN) is initiated at 1200. At 1600, 160 mL have infused and the patient is noted to be breathing shallowly, there is blood oozing from the PICC insertion site, and the patient is exhibiting confusion. Which action does the nurse perform first? 

The nurse is taking care of a patient who is prescribed chloramphenicol. After three days, the patient develops fatigue and dyspnea on exertion. Physical assessment reveals tachycardia, pallor and multiple petechiae on the trunk and extremities. The nurse anticipates which laboratory result(s)?

The 15-year-old emancipated minor patient who weighs 32 kg presents to the emergency department with fever, malaise, cervical lymphadenopathy, and severe throat pain that was not preceded by an upper respiratory infection. The nurse anticipates providing teaching about which prescription?