The nurse knows that intravenous fluid therapy has been effective for a patient with hyper-natremia when
a. Serum sodium concentration returns to normal.
b. Systolic and diastolic blood pressure de-crease.
c. Large amounts of emesis and diarrhea de-crease.
d. Urine output increases to 150 mL/hr.
ANS: A
Hypernatremia is diagnosed by elevated serum sodium concentration. Blood pressure is not an accurate indicator of hypernatremia. Emesis and diarrhea will not stop because of intravenous therapy. Urine output is influenced by many factors, including extracellular fluid volume. A large dilute urine output can cause further hypernatremia.
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