The nurse is caring for the patient with fever, chills, and a cough productive of green sputum. The chest X-ray shows a hazy opacity. The nurse checks the patient's medical history for sensitivity to which medication? 

The patient receiving a continuous infusion of total parenteral nutrition (TPN) through a peripherally inserted central catheter (PICC) line reports sudden onset dizziness, dyspnea, and tachycardia. Upon assessment, the nurse notes the patient is difficult to arouse. The IV tubing is noted to be cracked and have air in it. Which action does the nurse take first?

The nurse is assigned to care for a patient who presents with fever, chills, lethargy, and sore throat. Past medical history is significant for schizophrenia diagnosed three months ago for which clozapine was prescribed. Which additional laboratory finding does the nurse expect to see in this patient?