A patient has been admitted with a brain tumor.The patient starts to exhibit signs of an increase in antidiuretic hormone (ADH).When large amounts of ADH are released,the nurse should anticipate what change in the patient's sodium levels?

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Quizplus · Accepted Answer

Antidiuretic hormone (ADH)also contributes to control of the sodium level in the extracellular fluid by control of plasma osmolality.The sodium ion concentration in the plasma largely determines plasma osmolality.Osmoreceptors,located in the hypothalamus,are sensitive to changes in the circulating plasma osmolality.Because ADH causes the patient to retain free water,the patient will have a dilutional hyponatremia.

A Patient Has Been Admitted with a Brain Tumor