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: 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. Signs of impaired breathing in infants and children include all of the following except:

• A. nasal flaring
• B. grunting
• C. seesaw breathing
• D. quivering lips

Correct answer: D

Rationale: Signs of impaired breathing in infants and children typically include nasal flaring, grunting, and seesaw breathing. Nasal flaring is the widening of the nostrils during breathing to help with air intake, grunting is a sound made during expiration to keep the airway open, and seesaw breathing is an abnormal pattern where the chest moves in while the abdomen moves out. Quivering lips are not a typical sign of impaired breathing in infants and children, making it the correct answer. Nasal flaring, grunting, and seesaw breathing are all signs indicating the need for immediate medical attention due to potential respiratory distress.

3. The client develops a tension pneumothorax. Assessment is expected to reveal?

• A. Sudden hypertension and bradycardia
• B. Productive cough with yellow mucus
• C. Tracheal deviation and dyspnea
• D. Sudden development of profuse hemoptysis and weakness

Correct answer: C

Rationale: In a tension pneumothorax, the trachea deviates to the unaffected side due to increased pressure in the affected pleural space, causing respiratory distress. Dyspnea is a hallmark symptom as the lung on the affected side collapses, leading to difficulty in breathing. Sudden hypertension and bradycardia (Choice A) are not typical findings of tension pneumothorax. Productive cough with yellow mucus (Choice B) is more suggestive of respiratory infections rather than a tension pneumothorax. Sudden development of profuse hemoptysis and weakness (Choice D) is not characteristic of tension pneumothorax presentation.

4. A healthcare professional is assessing a patient's right lower extremity. The extremity is warm to touch, red, and swollen. The patient is also running a low fever. Which of the following conditions would be the most likely cause of the patient's condition?

• A. Herpes
• B. Scleroderma
• C. Dermatitis
• D. Cellulitis

Correct answer: D

Rationale: The patient's presentation of a warm, red, swollen extremity with a low fever is indicative of cellulitis, which is inflammation of cellular tissue. Cellulitis is commonly associated with these symptoms due to a bacterial infection in the skin and underlying tissues. Herpes (Choice A) is a viral infection that typically presents with grouped vesicles, not the warm, red, swollen presentation seen in cellulitis. Scleroderma (Choice B) is a chronic autoimmune condition affecting the skin and connective tissue, presenting differently from the acute symptoms of cellulitis. Dermatitis (Choice C) refers to skin inflammation, which does not typically present with the described symptoms of warmth, redness, swelling, and low fever observed in cellulitis.

5. What essential assessment must be performed for clients with implanted dialysis access devices?

• A. Color and capillary refill
• B. Patency and pulse
• C. Thrill and bruit
• D. Trousseau's and temperature

Correct answer: C

Rationale: Correct! When assessing clients with implanted dialysis access devices, it is crucial to palpate for the thrill, which indicates blood flow, and auscultate for the bruit, a humming sound, to ensure the patency of the access device. Choices A, B, and D are incorrect as they are not specific assessments related to dialysis access devices. Checking color and capillary refill, pulse, Trousseau's sign, and temperature are important assessments in other contexts but not specifically for monitoring implanted dialysis access devices.

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