The nurse cares for a group of clients on a medical surgical floor. The client with which condition is at highest risk for developing syndrome of inappropriate antidiuretic hormone (SIADH)?

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11ecbb05_c976_f6ee_b433_fb567132eb8a_MD0009_00 SIADH is an endocrine condition in which too much ADH is produced, causing water retention, increased total body water, and dilutional hyponatremia (low serum sodium). Some cancer cells, particularly those of small cell lung cancer, have the ability to produce and secrete ADH, leading to SIADH. Other causes include central nervous system disorders (eg, stroke, trauma, neurosurgery) and some commonly used medications (eg, desmopressin, carbamazepine). (Options A and C) Carpal tunnel syndrome is a result of aggravated tendons in the wrists causing narrow, pinched nerves. Sciatica is numbness, tingling, or pain caused by an irritation of the sciatic nerve. Both are examples of peripheral nerve disorders. SIADH is more common among clients with central nerve disorders (eg, stroke, neurosurgery). (Option B) Diabetes mellitus is an endocrine disorder characterized by hyperglycemia and is not commonly associated with SIADH. Educational objective: ADH is sometimes produced and secreted by cancer cells, especially lung cancer cells causing SIADH, a condition in which too much ADH causes water retention, increased total water, and dilutional hyponatremia.

The Nurse Cares for a Group of Clients on a Medical