A nurse is caring for a client who is dehydrated and receiving IV fluid replacement. The nurse should identify that which of the following findings indicates the treatment has been effective?

C. Dehydration often leads to dryness of oral mucous membranes due to decreased saliva production. Improved hydration status should lead to moist oral mucous membranes as the client's fluid balance is restored. This is a positive sign that fluid replacement therapy is effective and the client's hydration status is improving.A. In a dehydrated client, low fluid volume can lead to hypotension (low blood pressure). Effective IV fluid replacement should improve circulating blood volume and subsequently normalize blood pressure. Decreased blood pressure would indicate that the client's condition is improving with adequate fluid replacement. However, this is not always a definitive indicator on its own as other factors can influence blood pressure.B. An increased heart rate may initially be observed in a dehydrated client. However, as fluid replacement corrects the volume deficit, the heart rate should normalize or decrease to baseline levels. Therefore, a decrease in heart rate would actually indicate effective treatment.D. Thirst is a symptom of dehydration where the body signals a need for fluids. Effective IV fluid replacement should address the underlying cause of thirst by restoring fluid balance. Therefore, a decrease in excessive thirst would indicate that the client's hydration needs are being met adequately.