The nurse admits a patient with a low BP who reports severe diarrhea for several days from a Clostridium difficile infection. Which IV fluid would the nurse associate with the need to rapidly replace the patient's fluid volume?

Choice A reason: Checking the patient's temperature is important for assessing the severity of the pneumonia and monitoring for fever, but it is not the priority action before administering the first dose of vancomycin.

Choice B reason: Obtaining sputum cultures is the priority action because it allows for the identification of the causative organism and determination of its antibiotic susceptibility. This helps ensure that the prescribed antibiotic is appropriate for the patient's infection. Cultures should be obtained before starting antibiotic therapy to avoid interference with culture results.

Choice C reason: Checking the patient's blood pressure is important for overall patient assessment and monitoring, especially considering potential side effects of vancomycin. However, it is not the primary action needed before the first dose of the antibiotic.

Choice D reason: Drawing a blood specimen to evaluate the white blood cell count is useful for assessing the severity of the infection and the patient's immune response. However, this can be done after obtaining the sputum cultures and is not the immediate priority before administering the antibiotic.

Choice A reason: Asking the patient to try bearing weight on the injured ankle is not appropriate at this stage. Bearing weight can cause further injury or exacerbate the swelling and pain. The initial treatment should focus on reducing swelling and providing support.

Choice B reason: Elevating the ankle above heart level is appropriate because it helps to reduce swelling by promoting venous return and decreasing fluid accumulation in the affected area. Elevation is a standard first aid measure for managing acute injuries and swelling.

Choice C reason: Applying a warm moist pack to the ankle is not advisable immediately after an injury. In the acute phase, cold therapy (ice) is recommended to reduce swelling and pain. Warm therapy is more appropriate during the recovery phase, once swelling has subsided.

Choice D reason: Assessing the ankle's passive range of motion (ROM) may be necessary later, but not immediately upon arrival. The priority is to manage pain and swelling first. ROM assessments can be painful and might worsen the injury if conducted too soon.