The 23-year-old patient is brought to the emergency department after contacting emergency services to report profound weakness that started in his feet and worsened and spread cranially over the past few days. He reports severe diarrhea after a camping trip a week ago. Upon assessment, strength, sensation, and deep tendon reflexes are significantly reduced, with the lower extremities more severely affected than his upper extremities. There is increased protein in the cerebrospinal fluid found after a lumbar puncture. The patient begins taking more shallow breaths and becomes confused. The patient is intubated and mechanically ventilated. Once the patient is stable, the nurse anticipates administering which medication? 

The patient receiving chemotherapy for breast cancer develops a fever of 39.8°F and heart rate of 121 bpm. Within hours, the blood pressure drops from 128/89 mmHg to 91/54 mmHg, capillary refill time increases to 5 seconds, and urine output drops to less than 0.5 mL/kg/hour. Right-sided weakness, slurring of the words, and confusion occurs rapidly and subsides within 2 hours. Hemoptysis is also noted and the gums are oozing. Multiple transfusions are ordered. Which blood product does the nurse administer first?

The patient with acute kidney injury due to hypovolemic shock has been effectively fluid resuscitated but remains oliguric. Which of the following medications does the nurse administer to prevent fluid volume overload?