Chapter 16: Fluid, Electrolyte, and Acid-Base Imbalances Lewis: Medical-Surgical Nursing, 10th Edition Questions and Answers Grade A+ 2023

A patient who has a small cell carcinoma of the lung develops syndrome of inappropriate antidiuretic hormone (SIADH). The nurse should notify the health care provider about which assessment finding? a. Serum hematocrit of 42% b. Serum sodium level of 120 mg/dL c. Reported weight gain of 2.2 lb (1 kg) d. Urinary output of 280 mL during past 8 hours - -ANS: B Hyponatremia is the most important finding to report. SIADH causes water retention and a decrease in serum sodium level. Hyponatremia can cause confusion and other central nervous system effects. A critically low value likely needs to be treated. At least 30 mL/hr of urine output indicates adequate kidney function. The hematocrit level is normal. Weight gain is expected with SIADH because of water retention