Nursing Elites

1. A client with chronic kidney disease is being evaluated for dialysis. Which laboratory value would be most concerning to the nurse?

• A. Hemoglobin 9.5 g/dL
• B. Potassium 6.2 mEq/L
• C. Creatinine 3.5 mg/dL
• D. BUN 50 mg/dL

Correct answer: B

Rationale: The correct answer is B: Potassium 6.2 mEq/L. In chronic kidney disease, the kidneys struggle to regulate potassium levels, leading to hyperkalemia. A potassium level of 6.2 mEq/L is dangerously high and can cause life-threatening cardiac arrhythmias. Hemoglobin of 9.5 g/dL may indicate anemia, which is common in chronic kidney disease but is not immediately life-threatening. Creatinine and BUN levels are markers of kidney function; although elevated levels indicate kidney impairment, they are not acutely life-threatening like severe hyperkalemia.

2. A client who fell 20 feet from the roof of his home has multiple injuries, including a right pneumothorax. Chest tubes were inserted in the emergency department prior to his transfer to the intensive care unit (ICU). The nurse observes that the suction control chamber is bubbling at the -10 cm H20 mark, with fluctuation in the water seal, and over the past hour, 75 mL of bright red blood is measured in the collection chamber. Which intervention should the nurse implement?

• A. Increase wall suction to eliminate fluctuation in the water seal.
• B. Give blood from the collection chamber as autotransfusion.
• C. Add sterile water to the suction control chamber.
• D. Manipulate blood in tubing to drain into chamber.

Correct answer: C

Rationale: The correct intervention for the nurse to implement is to add sterile water to the suction control chamber. This action helps maintain the proper functioning of the chest tube system by regulating the negative pressure. Increasing wall suction is not recommended as it could lead to excessive negative pressure. Giving blood from the collection chamber as autotransfusion is inappropriate and poses a risk of complications such as air embolism. Manipulating blood in the tubing is also unsafe as it could introduce air into the system, increasing the risk of complications for the client.

3. A client undergoing chemotherapy reports a sudden onset of severe back pain. What should the nurse do first?

• A. Administer pain medication as prescribed
• B. Assess the pain's nature and intensity
• C. Encourage the client to rest and apply a hot pack
• D. Notify the physician immediately

Correct answer: B

Rationale: The correct first action for the nurse is to assess the nature and intensity of the pain. This initial assessment is crucial in determining the underlying cause of the pain, whether it is related to the chemotherapy or another issue. Understanding the pain's characteristics will guide the nurse in implementing appropriate interventions and seeking timely medical assistance if needed. Administering pain medication without a thorough assessment may mask important symptoms and delay necessary treatment. Encouraging rest and hot pack application may be appropriate interventions but should come after assessing the pain. Notifying the physician immediately can be important but should follow the initial assessment to provide comprehensive information to the healthcare provider.

4. The client with high blood pressure is being taught by the nurse to avoid adding salt during cooking. What effect does sodium have on blood pressure?

• A. It decreases the viscosity of blood
• B. It leads to increased fluid retention
• C. It causes vasoconstriction of the blood vessels
• D. It enhances the excretion of potassium

Correct answer: C

Rationale: The correct answer is C: 'It causes vasoconstriction of the blood vessels.' Sodium can lead to vasoconstriction, which narrows the blood vessels, increasing resistance to blood flow and subsequently raising blood pressure. Choices A, B, and D are incorrect. Sodium does not decrease blood viscosity, but it can lead to fluid retention, which increases blood volume and pressure. It does not enhance the excretion of potassium; instead, high sodium intake can lead to potassium excretion by the kidneys.

5. What are the final factors that contribute to blood pressure? (Select all that apply)

• A. Heart rate
• B. Stroke volume
• C. Peripheral resistance
• D. Neuroendocrine hormones

Correct answer: D

Rationale: Neuroendocrine hormones play a crucial role in regulating blood pressure by influencing factors like fluid balance, blood volume, and vessel constriction. While heart rate, stroke volume, and peripheral resistance are important factors affecting blood pressure, the final parameters that directly produce blood pressure are influenced by neuroendocrine hormones. Therefore, choice D is the correct answer. Choices A, B, and C are involved in the regulation of blood pressure but are not the final parameters that directly produce it.

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