A nurse is monitoring an older adult female client who had a myocardial infarction (MI) for the development of an acute kidney injury (AKI). Which of the following findings should the nurse identify as indicating an increased risk of AKI?

Magnesium 2.5 mEq/L

Serum osmolality 290 mOsm/kg H2O

Blood urea nitrogen (BUN) 20 mg/dL

Serum creatinine 1.8 mg/dL

Answer and Explanation

The Correct Answer is D

Choice A Reason: This is incorrect because magnesium 2.5 mEq/L is a normal value and does not indicate an increased risk of AKI. Magnesium is an electrolyte that plays a role in muscle and nerve function, blood pressure regulation, and energy production. The normal range for magnesium is 1.5 to 2.5 mEq/L.

Choice B Reason: This is incorrect because serum osmolality 290 mOsm/kg H2O is a normal value and does not indicate an increased risk of AKI. Serum osmolality is a measure of the concentration of solutes in the blood, such as sodium, glucose, and urea. The normal range for serum osmolality is 275 to 295 mOsm/kg H2O.

Choice C Reason: This is incorrect because blood urea nitrogen (BUN) 20 mg/dL is a normal value and does not indicate an increased risk of AKI. BUN is a measure of the amount of urea, a waste product of protein metabolism, in the blood. The normal range for BUN is 7 to 20 mg/dL.

Choice D Reason: This is correct because serum creatinine 1.8 mg/dL is an elevated value and indicates an increased risk of AKI. Creatinine is a waste product of muscle metabolism that is filtered by the kidneys. The normal range for serum creatinine is 0.6 to 1.2 mg/dL for women and 0.7 to 1.3 mg/dL for men. An increase in serum creatinine indicates a decrease in kidney function and glomerular filtration rate (GFR).

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Correct Answer is C

Explanation

Choice A Reason: This choice is incorrect because slowing the rate to 50 mL/hr may not be enough to prevent cerebral edema, which is a common complication of head injury. Cerebral edema is a swelling of the brain tissue due to increased ﬂuid accumulation. It can cause increased intracranial pressure (ICP), which can lead to brain damage or death. Therefore, the nurse should limit the ﬂuid intake of the client with head injury to avoid worsening the condition.

Choice B Reason: This choice is incorrect because increasing the rate to 250 mL/hr may cause ﬂuid overload, which can also increase the ICP and worsen the cerebral edema. Fluid overload is a condition in which the body has too much ﬂuid, which can impair the function of the heart, lungs, and kidneys. Therefore, the nurse should avoid giving too much ﬂuid to the client with head injury.

Choice C Reason: This choice is correct because slowing the rate to 20 mL/hr may help to maintain adequate hydration and electrolyte balance, while preventing ﬂuid overload and cerebral edema. This is a conservative approach that can be used until the client's neurological status and ICP are assessed and monitored.

Choice D Reason: This choice is incorrect because continuing the rate at 125 mL/hr may not be appropriate for the client with head injury, depending on their individual needs and condition. The nurse should adjust the ﬂuid rate according to the client's vital signs, urine output, serum osmolality, and ICP. Therefore, the nurse should not assume that this rate is optimal for the client without further evaluation.

A. Respiratory acidosis B. Respiratory alkalosis C. Metabolic acidosis D. Metabolic alkalosis

Correct Answer is A

Explanation

Choice A Reason: This is correct because respiratory acidosis is characterized by a low pH and a high PaCO2, indicating that the client has impaired ventilation and excess carbon dioxide in the blood.

Choice B Reason: This is incorrect because respiratory alkalosis is characterized by a high pH and a low PaCO2, indicating that the client has increased ventilation and reduced carbon dioxide in the blood.

Choice C Reason: This is incorrect because metabolic acidosis is characterized by a low pH and a low HCO3, indicating that the client has an excess of metabolic acids or a loss of base in the blood.

Choice D Reason: This is incorrect because metabolic alkalosis is characterized by a high pH and a high HCO3, indicating that the client has an excess of base or a loss of metabolic acids in the blood.

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A nurse is monitoring an older adult female client who had a myocardial infarction (MI) for the development of an acute kidney injury (AKI). Which of the following findings should the nurse identify as indicating an increased risk of AKI?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse in the emergency department is caring for a client who has sustained a head injury. The nurse notes the client's IV ﬂuids are infusing at 125 mL/hr. Which of the following is an appropriate action by the nurse?

Correct Answer is C

Explanation

A nurse is reviewing the arterial blood gas values for a client. The pH is 7.32, PaCO2 is 48 mm Hg and the HCO3 is 23 mEq/L. The nurse should recognize that these findings indicate which of the following acid-base imbalances?

Correct Answer is A

Explanation

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