Nursing Elites

1. An infection in a central venous access device is not eliminated by giving antibiotics through the catheter. How might bacterial glycocalyx contribute to this?

• A. It protects the bacteria from antibiotic and immunologic destruction.
• B. Glycocalyx neutralizes the antibiotic, rendering it ineffective.
• C. It competes with the antibiotic for binding sites on the microbe.
• D. Glycocalyx provides nutrients for microbial growth.

Correct answer: It protects the bacteria from antibiotic and immunologic destruction.

Rationale: Bacterial glycocalyx is a viscous polysaccharide or polypeptide slime that covers microbes. It plays a significant role in protecting bacteria by enhancing adherence to surfaces, resisting phagocytic engulfment by white blood cells, and preventing antibiotics from contacting the microbe. Choice A is correct because glycocalyx shields the bacteria from both antibiotics and the immune system, allowing the infection to persist. Choices B, C, and D are incorrect because glycocalyx does not neutralize antibiotics, compete for binding sites with antibiotics, or provide nutrients for microbial growth.

2. When treating anemia in clients with renal failure, erythropoietin should be given in conjunction with:

• A. iron, folic acid, and B12.
• B. an increase in protein in the diet.
• C. vitamins A and C.
• D. an increase in calcium in the diet.

Correct answer: iron, folic acid, and B12.

Rationale: Erythropoietin is used to stimulate red blood cell production in clients with renal failure. To effectively increase red blood cell production, adequate levels of iron, folic acid, and B12 are necessary. These nutrients play crucial roles in erythropoiesis. Choices B, an increase in protein in the diet, is not directly related to enhanced erythropoiesis and can potentially worsen uremia. Choices C and D, vitamins A and C, and an increase in calcium in the diet, are not directly involved in red blood cell production and are not essential in this context.

3. The nurse should plan to evaluate the earliest onset of effectiveness of nitroglycerin (Nitrostat) sublingual (SL) within what time frame?

• A. 15 seconds
• B. 3 minutes
• C. 5 minutes
• D. 15 minutes

Correct answer: 3 minutes

Rationale: The onset of action for Nitrostat SL is 1 to 3 minutes. Therefore, the nurse should plan to evaluate the earliest onset of effectiveness within 3 minutes after administering the medication. Option A, 15 seconds, is too short of a time frame for the onset of action of Nitrostat. Option C, 5 minutes, is slightly delayed compared to the typical onset time. Option D, 15 minutes, is too long to wait for evaluating the effectiveness of Nitrostat sublingual administration.

4. The healthcare provider should utilize data about which of the following to provide information about the nutritional status of a client being evaluated for malnutrition?

• A. triceps skinfold measurement
• B. fasting blood glucose level
• C. hemoglobin A1c level
• D. serum lipid profile results

Correct answer: triceps skinfold measurement

Rationale: Objective anthropometric measurements such as triceps skinfold and mid-arm circumference (MAC), along with weight, are usually used to diagnose malnutrition. Triceps skinfold measurement specifically helps assess body fat and muscle mass, providing valuable information about the client's nutritional status. Fasting blood glucose level, hemoglobin A1c level, and serum lipid profile results are important tests in assessing different aspects of health such as diabetes management and cardiovascular risk, but they are not specific indicators of malnutrition.

5. Which of the following injuries, presented by a client entering the Emergency Department, is the highest priority?

• A. open leg fracture
• B. open head injury
• C. stab wound to the chest
• D. traumatic amputation of a thumb

Correct answer: stab wound to the chest

Rationale: A stab wound to the chest is the highest priority injury. This type of injury can lead to lung collapse and mediastinal shift, potentially resulting in death if left untreated. Treating an obstructed airway or a chest wound takes precedence over addressing hemorrhage. The principle of ABC (airway, breathing, and circulation) guides care decisions in prioritizing life-threatening situations. An open leg fracture, open head injury, and traumatic amputation of a thumb, while serious, do not pose an immediate threat to life compared to a stab wound to the chest. An open leg fracture may lead to significant blood loss but is not immediately life-threatening. An open head injury requires assessment and intervention but does not impact airway, breathing, or circulation directly. Traumatic amputation of a thumb is a serious injury but can be managed after addressing more life-threatening conditions.

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