Nursing Elites

1. The healthcare professional is preparing to give a dose of trimethoprim-sulfamethoxazole (TMP-SMX) and learns that the patient takes warfarin (Coumadin). The healthcare professional will request an order for

• A. a decreased dose of TMP-SMX.
• B. a different antibiotic.
• C. an increased dose of warfarin.
• D. coagulation studies.

Correct answer: D

Rationale: Sulfonamides, like trimethoprim-sulfamethoxazole (TMP-SMX), can potentiate the anticoagulant effects of warfarin (Coumadin). To monitor the patient's response and prevent adverse effects, the healthcare professional should request coagulation studies, such as International Normalized Ratio (INR) levels. Choosing a decreased dose of TMP-SMX would not address the potential drug interaction between TMP-SMX and warfarin. Opting for a different antibiotic is not necessary if the interaction can be managed by monitoring. Increasing the dose of warfarin without monitoring could lead to excessive anticoagulation and adverse events, so it's not the appropriate action in this scenario.

2. A client with chronic obstructive pulmonary disease (COPD) who is beginning oxygen therapy asks the nurse why the flow rate cannot be increased to more than 2 L/min. The nurse responds that this would be harmful because it could:

• A. Be drying to nasal passages
• B. Decrease the client’s oxygen-based respiratory drive
• C. Increase the risk of pneumonia due to drier air passages
• D. Decrease the client’s carbon dioxide–based respiratory drive

Correct answer: B

Rationale: Increasing the oxygen flow rate beyond 2 L/min for a client with COPD can decrease the client's oxygen-based respiratory drive. In clients with COPD, the natural respiratory drive is based on the level of oxygen instead of carbon dioxide, as seen in healthy individuals. Increasing the oxygen level independently can suppress the drive to breathe, leading to respiratory failure. Choices A, C, and D are incorrect because drying of nasal passages, increased risk of pneumonia due to drier air passages, and decreasing the carbon dioxide-based respiratory drive are not the primary concerns associated with increasing the oxygen flow rate in a client with COPD.

3. A client who underwent surgery and experienced significant blood loss is being cared for by a nurse. Which findings by the nurse should prompt immediate action to prevent acute kidney injury? (Select all that apply.)

• A. Urine output of 100 mL in 4 hours
• B. Large amount of sediment in the urine
• C. A & B
• D. Amber, odorless urine

Correct answer: C

Rationale: The nurse must monitor for signs of acute kidney injury in a postoperative client who had major blood loss. Low urine output, presence of sediment in the urine, and low blood pressure should raise concerns and be reported to the healthcare provider promptly. Postoperatively, assessing urine characteristics is crucial. Sediment, hematuria, and urine output less than 0.5 mL/kg/hour for 3 to 4 hours should be reported. While a urine output of 100 mL in 4 hours is low, it should be compared to the recommended 0.5 mL/kg/hour over a longer period. Perfusion to the kidneys is a priority, hence the importance of addressing low blood pressure. Amber, odorless urine is considered normal and does not indicate an immediate concern for acute kidney injury, unlike low urine output and presence of sediment.

4. A client with a history of calcium phosphate urinary stones is being taught by a nurse. Which statements should the nurse include in this client’s dietary teaching? (Select all that apply.)

• A. Limit your intake of food high in animal protein.
• B. Read food labels to help minimize your sodium intake.
• C. A and B
• D. Reduce your intake of milk and other dairy products.

Correct answer: C

Rationale: For a client with a history of calcium phosphate urinary stones, it is essential to limit the intake of foods high in animal protein to prevent the formation of stones. Additionally, reducing sodium intake is crucial as high sodium levels can contribute to stone formation. Therefore, choices A and B are correct. Choice D, which suggests reducing intake of milk and other dairy products, is not specifically recommended for calcium phosphate stones. Clients with calcium phosphate stones should focus on limiting animal protein, sodium, and calcium intake. Choices A and B address these dietary modifications, making them the correct options for this client. Choices D, which is not directly related to calcium phosphate stones, is incorrect.

5. What is the primary purpose of administering IV fluids to a patient in septic shock?

• A. To reduce blood pressure.
• B. To increase cardiac output.
• C. To stabilize blood glucose levels.
• D. To maintain adequate tissue perfusion.

Correct answer: D

Rationale: The primary purpose of administering IV fluids to a patient in septic shock is to maintain adequate tissue perfusion. In septic shock, there is a significant drop in blood pressure and systemic vascular resistance leading to poor tissue perfusion. IV fluids help to restore intravascular volume, improve perfusion to vital organs, and prevent organ failure. Choice A ('To reduce blood pressure') is incorrect because IV fluids in septic shock aim to restore tissue perfusion rather than lower blood pressure. Choice B ('To increase cardiac output') is incorrect as the primary goal is to improve tissue perfusion, not specifically increase cardiac output. Choice C ('To stabilize blood glucose levels') is unrelated to the primary purpose of administering IV fluids in septic shock, which is to address the compromised tissue perfusion.

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