Which action should a nurse take first when assessing a postoperative client showing signs of fluid volume deficit?

When assessing a postoperative client showing signs of fluid volume deficit, the priority action is to obtain a prescription for intravenous (IV) fluids. This is essential because a fluid volume deficit can lead to serious complications such as hypovolemic shock, electrolyte imbalances, and impaired organ function. If a patient is showing symptoms indicating a decrease in fluid volume, such as low blood pressure or increased heart rate, addressing this deficiency quickly is crucial for stabilization.

While checking vital signs provides important information about the client's current condition, administering oral fluids could be ineffective or inappropriate in a postoperative patient who may have restrictions on oral intake due to anesthesia or surgical procedures. Documentation, while important for legal and medical records, is not an immediate priority compared to the clinical intervention needed to address the fluid volume deficit. Thus, obtaining a prescription for IV fluids is the most direct and effective way to rapidly manage the patient’s condition and ensure adequate hydration.