What should a nurse's immediate action be for a client on desmopressin exhibiting confusion and drowsiness?

In this scenario, the appropriate immediate action for the nurse is to take the client's vital signs. Monitoring vital signs is crucial as it helps determine the client's current physiological status. Confusion and drowsiness can be indicative of various underlying issues, such as dehydration, electrolyte imbalances, or even indications of a potential hypoglycemic episode, especially in clients receiving desmopressin, which is used to manage conditions like diabetes insipidus.

Taking vital signs will provide insights into the client's condition, including any changes in heart rate, blood pressure, and temperature, which can help in assessing the severity of the situation and guide further actions. If abnormalities are detected in the vital signs, this can prompt necessary interventions, whether it involves contacting a physician, managing fluid levels, or determining the need for blood glucose monitoring and administration. This step is foundational in prioritizing safety and responsive care for the client.