Nursing Elites

1. When a client needs oxygen therapy, what is the highest flow rate that oxygen can be delivered via nasal cannula?

• A. 2 liters/minute
• B. 4 liters/minute
• C. 6 liters/minute
• D. 8 liters/minute

Correct answer: C

Rationale: The correct answer is 6 liters/minute. When a client requires oxygen therapy, the maximum flow rate that oxygen can be delivered via nasal cannula is 6 liters/minute. Nasal cannula can effectively deliver oxygen up to 6 liters/minute. Flow rates exceeding 6 liters/minute may lead to drying of the nasal passages and discomfort for the client. Higher flow rates, like 8 liters/minute, should be administered using a mask to ensure sufficient oxygenation. Options A, B, and D are incorrect as they indicate flow rates that surpass the recommended maximum for nasal cannula delivery.

2. In which of the following conditions might increased cortisol levels be found?

• A. Cushing's syndrome
• B. Addison's disease
• C. Renal failure
• D. Congestive heart failure

Correct answer: A

Rationale: Cushing's syndrome is characterized by increased cortisol levels due to the overproduction of cortisol by the adrenal glands. This excess cortisol can lead to various symptoms and complications. Addison's disease is associated with decreased cortisol levels as it results from adrenal insufficiency, making it an incorrect choice in this context. Renal failure and congestive heart failure are not typically linked to abnormal cortisol levels, further indicating that they are not the conditions where increased cortisol levels are found.

3. A child comes to the clinic with a skin rash. The maculopapular lesions are distributed around the mouth and have honey-colored drainage. The caregiver states that the rash is getting worse and seems to spread with the child's scratching. Which of the following advisory comments should be given?

• A. The history and presentation might indicate chickenpox, a highly contagious disease.
• B. The lesions might indicate a noncontagious infection that does not require isolation.
• C. The history and presentation might indicate an infectious illness called impetigo.
• D. The lesions are not contagious unless others have open wounds or lesions themselves.

Correct answer: C

Rationale: The scenario describes classic impetigo, which typically presents with maculopapular lesions around the mouth with honey-colored drainage, worsening with scratching. It is important to advise the caregiver that the history and presentation are indicative of impetigo, an infectious skin condition caused by bacteria. Treatment usually involves antibiotic therapy. Choice A is incorrect because chickenpox typically presents with a vesicular rash following a history of high fever. Choice B is incorrect as impetigo is contagious and requires precautions to prevent the spread of infection. Choice D is incorrect as impetigo is contagious irrespective of open wounds or lesions in others.

4. The healthcare professional seeks to assess the renal function of an elderly client who is about to receive a nephrotoxic medication. Which of the following labs provides the best indicator for renal function?

• A. urinalysis
• B. creatinine and blood urea nitrogen
• C. chemistry of electrolytes
• D. creatinine clearance

Correct answer: D

Rationale: In the context of an elderly client, assessing renal function before administering a nephrotoxic medication is crucial. While urinalysis and blood urea nitrogen provide valuable information on hydration status and overall health clues, they are not specific indicators of renal function. The chemistry of electrolytes may show abnormalities in renal failure, but it does not directly measure the kidneys' ability to eliminate waste. Creatinine clearance, on the other hand, is considered the best indicator for renal function in the elderly. This test accounts for decreases in lean body mass that can affect blood creatinine levels and is widely used to estimate the glomerular filtration rate, reflecting the kidneys' filtration capability. Therefore, creatinine clearance is the most appropriate lab test to assess renal function in this scenario.

5. The nurse is teaching a client about erythema infectiosum. Which of the following factors is not correct?

• A. There is no rash.
• B. The disorder is uncommon in adults.
• C. There is no fever.
• D. There is sometimes a 'slapped face' appearance.

Correct answer: B

Rationale: The correct answer is B: 'The disorder is uncommon in adults.' Erythema infectiosum, also known as Fifth's disease, is more common in children than in adults. It typically presents with a rash on the face that gives a 'slapped cheek' or 'slapped face' appearance. Fever may be present, and there is a characteristic rash associated with the condition. Therefore, the statement 'The disorder is uncommon in adults' is incorrect, making it the correct answer. The other statements are true regarding erythema infectiosum, making them incorrect choices. There is indeed a rash associated with erythema infectiosum, which can be a prominent feature. Fever may also be present in individuals with this condition. Additionally, the 'slapped face' appearance is a classic characteristic of erythema infectiosum.

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