The nurse is caring for a patient admitted for diabetes insipidus. During the physical assessment, the nurse should expect to note which of the following?

Excessive thirst
Polyuria
Tachycardia

Explanation

• Diabetes insipidus is caused by a deficiency of antidiuretic hormone (ADH) and is characterized by excessive thirst, polyuria, low urine specific gravity, tachycardia, hypotension, and dry mucous membranes.

• Diabetes insipidus is caused by either the inability of the posterior pituitary to secrete ADH (caused by cerebral edema, a tumor, or idiopathic) or the inability of the kidney to respond to ADH.

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