Lisa, 49, has actinic keratosis on her left cheek and opts for treatment with topical 5-FU. She is generally healthy with no other significant past medical history. What should the nurse instruct her?

Avoid crowded places due to infection risk.

S-FU will prepare the lesion for surgical removal.

Nutritional intake should be monitored due to risk of anorexia.

The treated areas will be eroded and take weeks to heal.

Answer and Explanation

The Correct Answer is D

A.   Actinic keratosis treatment with topical 5-FU does not increase the risk of infection to the extent that avoiding crowded places would be necessary.
B.   While 5-FU may be used to treat actinic keratosis, it does not necessarily prepare the lesion for surgical removal.

C.   There is no direct association between topical 5-FU treatment and anorexia.

Nutritional intake monitoring may not be necessary unless symptoms develop.

D. Topical 5-FU causes localized irritation, erosion, and crusting of treated areas, which typically take weeks to heal. This instruction is important for the patient to understand the expected outcome of the treatment.

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Correct Answer is C

Explanation

A. Alveolar macrophages are involved in immune defense within the lungs but are not directly responsible for bronchospasm.
B. This system helps remove mucus and trapped particles from the airways but does not directly cause bronchospasm.

C. Exposure to cold air can trigger reflex bronchoconstriction as a protective mechanism to prevent the entry of cold air into the lungs.
D. Filtration of air occurs primarily in the upper airways and does not directly relate to bronchospasm triggered by cold air inhalation.

A. Diffusion of gases will be enhanced B. Pulmonary blood supply is compromised C. Ventilation is likely efficient D. Work of breathing will be increased

Correct Answer is D

Explanation

A. Decreased lung compliance doesn't directly enhance gas diffusion; it may impair it due to decreased lung expansion.

B. Decreased lung compliance doesn't necessarily indicate compromised pulmonary blood supply; it's more related to the lung's ability to expand and contract.
C. Decreased lung compliance suggests that ventilation may be impaired because the lungs are less able to expand and contract effectively.
D. Decreased lung compliance means the lungs are stiffer, requiring more effort to breathe, thus increasing the work of breathing.

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Lisa, 49, has actinic keratosis on her left cheek and opts for treatment with topical 5-FU. She is generally healthy with no other significant past medical history. What should the nurse instruct her?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Sarah, a 32-year-old non-smoker, presents with bronchospasm due to inhaling cold air during her morning run. Which reflex mechanism is being triggered?

Correct Answer is C

Explanation

Brian, a 58-year-old patient, is noted to have a decreased lung compliance during his pulmonary function tests. What does this suggest about the physiology of his respiration?

Correct Answer is D

Explanation

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