A nurse is caring for a male client who reports nausea and vomiting and is receiving IV ﬂuid therapy. His blood urea nitrogen (BUN) is 32 mg/dL, creatinine 1.1 mg/dL, and hematocrit 50%. Which of the following nursing interventions is appropriate?

Continue routine care because the results are within the expected reference range.

Evaluate urine for amount and for specific gravity.

Collect a urine specimen for culture and sensitivity.

Decrease the IV ﬂuid infusion rate and limit oral ﬂuid intake.

Answer and Explanation

The Correct Answer is B

Choice A Reason: This is incorrect because the results are not within the expected reference range. The client's BUN, creatinine, and hematocrit are elevated, indicating dehydration or reduced renal perfusion.

Choice B Reason: This is correct because evaluating urine for amount and for specific gravity can help assess the client's hydration status and renal function. These actions can help assess the client's hydration status and renal function, which may be aﬀected by nausea and vomiting. The client's BUN, creatinine, and hematocrit are elevated, indicating dehydration or reduced renal perfusion. The normal ranges for BUN are 7 to 20 mg/dL, for creatinine are

0.6 to 1.2 mg/dL, and for hematocrit are 38% to 50% for males. The nurse should monitor the urine output and specific gravity, which reﬂect the concentration and volume of urine. The normal range for urine output is 30 to 60 mL/hour, and for specific gravity is 1.005 to 1.030.

Choice C Reason: This is incorrect because collecting a urine specimen for culture and sensitivity is not indicated for this client. This action is used to diagnose urinary tract infections, which are not suggested by the client's symptoms or results.

Choice D Reason: This is incorrect because decreasing the IV ﬂuid infusion rate and limiting oral ﬂuid intake can worsen the client's dehydration and renal perfusion. The nurse should maintain adequate ﬂuid intake and balance to prevent further complications.

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Correct Answer is B

Explanation

Choice A Reason: This is incorrect. Flushing of the skin is not a sign of hypovolemic shock, but rather of vasodilation or fever. Hypovolemic shock causes vasoconstriction and pale, cool, clammy skin.

Choice B Reason: This is correct. Oliguria is a decreased urine output that indicates reduced renal perfusion due to hypovolemia. The normal urine output for an adult is 0.5 to 1 mL/kg/hr.

Choice C Reason: This is incorrect. Hypertension is not a sign of hypovolemic shock, but rather of increased vascular resistance or ﬂuid overload. Hypovolemic shock causes hypotension due to decreased blood volume and cardiac output.

Choice D Reason: This is incorrect. Bradypnea is a slow respiratory rate that indicates respiratory depression or fatigue. Hypovolemic shock causes tachypnea due to hypoxia and increased metabolic demand.

A. Troponin is an enzyme that indicates damage to brain, heart, and skeletal muscle tissues. B. Troponin is a heart muscle protein that appears in the bloodstream when there is damage to the heart. C. Troponin is a protein that helps transport oxygen throughout the body. D. Troponin is a lipid whose levels reﬂect the risk for coronary artery disease.

Correct Answer is B

Explanation

Choice a) is incorrect because troponin is not an enzyme, but a protein. Enzymes are molecules that speed up chemical reactions in the body. Troponin does not have this function.

Choice b) is correct because troponin is a protein that binds to calcium and regulates the contraction of heart muscle fibers. When the heart muscle is injured, such as in a myocardial infarction, troponin leaks into the bloodstream and can be detected by a blood test. The higher the level of troponin, the more severe the damage to the heart.

Choice c) is incorrect because troponin does not help transport oxygen throughout the body. That function is performed by hemoglobin, which is a protein found in red blood cells.

Choice d) is incorrect because troponin is not a lipid, but a protein. Lipids are fats that are used for energy storage and cell membrane formation. Troponin does not have these roles.

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A nurse is caring for a male client who reports nausea and vomiting and is receiving IV ﬂuid therapy. His blood urea nitrogen (BUN) is 32 mg/dL, creatinine 1.1 mg/dL, and hematocrit 50%. Which of the following nursing interventions is appropriate?

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Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who has hypovolemic shock. Which of the following should the nurse recognize as an expected finding?

Correct Answer is B

Explanation

Correct Answer is B

Explanation

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