A nurse is assessing a client who is receiving IV furosemide for peripheral edema.
Which of the following findings should the nurse identify as an indication that the client is developing dehydration?
Urine output of 240 mL in a 12-hr period.
BUN 18 mg/dL (10 to 20 mg/dL).
Weight loss of 0.61 Kg (1.34 Ib) in 24 hr.
Blood pressure 100/70 mm Hg.
None
None
The Correct Answer is C
Choice A rationale
A urine output of 240 mL in a 12-hour period translates to 20 mL/hr, which is significantly below the normal physiological range of 30 mL/hr or greater. While low urine output can indicate dehydration, severe oliguria often points to acute kidney injury or severe hypovolemia, not solely dehydration. Normal urine output is generally considered to be 0.5-1 mL/kg/hr.
Choice B rationale
A BUN of 18 mg/dL falls within the normal range of 10 to 20 mg/dL. In dehydration, the kidneys reabsorb more water, leading to a disproportionate increase in BUN relative to creatinine due to increased urea concentration in the tubules, reflecting hypovolemia. A normal BUN value does not indicate dehydration.
Choice C rationale
A weight loss of 0.61 Kg (1.34 lb) in 24 hours is a significant and rapid reduction in body mass. This acute fluid deficit directly reflects a negative fluid balance, indicating a loss of body water. Each kilogram of weight loss approximates 1 liter of fluid loss, making this a clear indicator of dehydration due to fluid volume deficit.
Choice D rationale
A blood pressure of 100/70 mm Hg is within the normal range for many individuals, although it is on the lower side of normotension. While hypotension can be a late sign of severe dehydration, especially orthostatic hypotension, a reading of 100/70 mm Hg alone does not definitively confirm dehydration as the primary cause.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["3"]
Explanation
Step 1 is: Convert client weight from pounds to kilograms. 165 Ib ÷ 2.2 Ib/kg = 75 kg.
Step 2 is: Calculate the total dose of verapamil needed. 0.1 mg/kg × 75 kg = 7.5 mg.
Step 3 is: Calculate the volume to administer in mL. 7.5 mg ÷ (2.5 mg/mL) = 3 mL. The nurse should administer 3 mL.
Correct Answer is D
Explanation
Choice A rationale
Aspartate aminotransferase (AST) is an enzyme primarily found in the liver, heart, and muscle. Elevated levels can indicate hepatocellular damage or cardiac muscle injury. While some medications can affect liver function, AST is not a primary monitoring parameter for methylprednisolone, which is a corticosteroid, unless specific hepatotoxicity is suspected or pre-existing liver conditions exist. Normal AST levels are typically 10-40 U/L.
Choice B rationale
Fibrin split products (FSPs) are indicators of fibrinolysis, the breakdown of fibrin clots. Elevated FSPs suggest active clotting and subsequent clot degradation, often seen in disseminated intravascular coagulation (DIC). Methylprednisolone, a corticosteroid, does not directly impact fibrinolysis or coagulation to warrant routine monitoring of FSPs as a primary concern. This test is not routinely indicated.
Choice C rationale
Blood urea nitrogen (BUN) measures the amount of nitrogen in the blood that comes from the waste product urea. Elevated BUN can indicate kidney dysfunction or dehydration. While corticosteroids can influence fluid balance, BUN is not a specific or primary laboratory value monitored for the direct effects of methylprednisolone therapy unless a pre-existing renal impairment is present. Normal BUN levels are typically 7-20 mg/dL.
Choice D rationale
Methylprednisolone, a glucocorticoid, significantly impacts carbohydrate metabolism by promoting gluconeogenesis and glycogenolysis, leading to increased blood glucose levels. This can induce hyperglycemia and even steroid-induced diabetes, particularly in predisposed individuals. Therefore, close monitoring of blood glucose is crucial to prevent and manage this common adverse effect. Normal fasting glucose is typically 70-99 mg/dL.
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