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
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).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","E"]
Explanation
Choice A Reason: This choice is correct because verifying the prescribed ventilator settings daily is an important intervention to ensure that the client is receiving adequate ventilation and oxygenation. The ventilator settings include parameters such as tidal volume, respiratory rate, fraction of inspired oxygen (FiO2), positive end-expiratory pressure (PEEP), and peak inspiratory pressure (PIP). The nurse should check that the settings match the prescription and report any changes or alarms to the provider.
Choice B Reason: This choice is incorrect because applying restraints if the client becomes agitated is not a recommended intervention to prevent complications. Restraints may cause injury, infection, or psychological distress to the client and increase the risk of ventilator-associated pneumonia (VAP). The nurse should use alternative methods to manage agitation, such as sedation, analgesia, or environmental modification.
Choice C Reason: This choice is correct because administering pantoprazole as prescribed is an important intervention to prevent complications. Pantoprazole is a proton pump inhibitor (PPI) that reduces the production of stomach acid and prevents gastroesophageal reflux disease (GERD) and stress ulcers. These conditions can cause aspiration, bleeding, or infection in clients who are receiving mechanical ventilation.
Choice D Reason: This choice is incorrect because repositioning the endotracheal tube to the opposite side of the mouth daily is not a recommended intervention to prevent complications. Repositioning the endotracheal tube may cause trauma, bleeding, or displacement of the tube, which can compromise the airway and ventilation of the client. The nurse should secure the tube with tape or a device and check its position regularly using chest x-ray or end-tidal CO2 monitoring.
Choice E Reason: This choice is correct because elevating the head of the bed to at least 30° is an important intervention to prevent complications. Elevatin the head of the bed helps to reduce the risk of aspiration, which is the inhalation of gastric contents or secretions into the lungs. Aspiration can cause pneumonia, atelectasis, or respiratory failure in clients who are receiving mechanical ventilation.

Correct Answer is B
Explanation
Choice A Reason: This is incorrect because the laboratory values are not within the expected reference range in a client who has DIC. DIC is a condition that causes abnormal activation of the clotting cascade, leading to widespread microthrombi formation and consumption of clotting factors and platelets. This results in bleeding complications and organ dysfunction.
Choice B Reason: This is correct because the laboratory values are prolonged in a client who has DIC. PT, aPTT, and INR are tests that measure the time it takes for blood to clot. PT measures the extrinsic pathway, aPTT measures the intrinsic pathway, and INR is a standardized ratio of PT. In DIC, these tests are prolonged because of the depletion of clotting factors and platelets.
Choice C Reason: This is incorrect because the laboratory values are not the same as the previous test values in a client who has DIC. DIC is an acute and dynamic condition that can change rapidly depending on the underlying cause and treatment. The laboratory values may fluctuate between normal, prolonged, or shortened depending on the balance between clotting and bleeding.
Choice D Reason: This is incorrect because the laboratory values are not decreased in a client who has DIC. Decreased laboratory values would indicate a shortened clotting time, which can occur in some cases of DIC when there is excessive clotting and thrombosis. However, this is not the typical finding in DIC, as most clients present with bleeding manifestations and prolonged clotting time.
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