an infection in a central venous access device is not eliminated by giving antibiotics through the catheter how might bacterial glycocalyx contribute
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Nursing Elites

NCLEX-PN

NCLEX PN Exam Cram

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?

Correct answer: A

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. A nurse working in a pediatric clinic observes the following situations. Which of the following may indicate a delayed child to the nurse?

Correct answer: A

Rationale: The correct answer is 'A 12-month-old that does not 'cruise''. At 12 months, a child should at least be 'cruising' (holding on to objects to walk), which is considered pre-walking. The other choices describe age-appropriate developmental milestones: sitting upright unsupported by 8 months, rolling prone to supine by 6 months, and rolling supine to prone by 3 months. Not 'cruising' at 12 months may indicate a delay in motor skills development.

3. Which of the following is likely to increase the risk of sexually transmitted disease?

Correct answer: D

Rationale: All of the above factors are likely to increase the risk of sexually transmitted diseases (STDs). Alcohol use can impair judgment, leading to risky sexual behavior. Certain types of sexual practices, especially unprotected sex or multiple partners, increase the likelihood of contracting STDs. While oral contraception use does not directly increase the risk of STDs, it does not protect against them either. Therefore, all the choices (alcohol use, certain types of sexual practices, and oral contraception use) can contribute to an increased risk of contracting STDs.

4. What is most important for the healthcare professional to do prior to initiating peritoneal dialysis?

Correct answer: D

Rationale: The correct answer is to warm the fluids. Warming the dialysis fluids is crucial before initiating peritoneal dialysis to prevent abdominal discomfort and promote vasodilation, which helps in achieving good exchange in the peritoneum. Aspirating to check placement (Choice A) is not typically necessary before initiating peritoneal dialysis. Ensuring the client voids (Choice B) is not directly related to the procedure of peritoneal dialysis. Irrigating the catheter to maintain patency (Choice C) is usually done as part of routine care but is not specifically required prior to initiating peritoneal dialysis. Therefore, the most important action to take before starting peritoneal dialysis is to warm the fluids.

5. Which of the following is not a primary function of the kidneys?

Correct answer: D

Rationale: The correct answer is reabsorption of waste products because the kidneys excrete waste products rather than reabsorbing them. Choices A, B, and C are indeed primary functions of the kidneys. The kidneys play a crucial role in regulating blood pressure, activating vitamin D, and producing erythropoietin, which stimulates red blood cell production. Therefore, the primary role of the kidneys is to filter blood, remove waste products, regulate fluid balance, and maintain electrolyte balance.

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