A nurse is explaining the pathophysiology of cystic fibrosis (CF) to a newly diagnosed patient. Which statement accurately describes the genetic basis of CF?

"CF results from a dominant genetic mutation inherited from one parent."

"CF occurs due to the presence of two dominant genetic mutations."

"CF is caused by a recessive genetic mutation inherited from both parents."

"CF is a non-genetic condition caused by environmental factors."

Answer and Explanation

The Correct Answer is C

A) Incorrect. CF is an autosomal recessive genetic disorder, meaning that both copies of the CFTR gene must carry a mutation for the condition to manifest.

B) Incorrect. CF is not caused by dominant genetic mutations.

C) Correct. CF results from inheriting two recessive genetic mutations, one from each parent, leading to defective CFTR protein function.

D) Incorrect. CF is primarily a genetic disorder with well-established genetic mutations associated with its development.

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Correct Answer is D

Explanation

A) Incorrect. The sweat chloride test is used for CF diagnosis, but it does not analyze genetic mutations.

B) Incorrect. Chest X-rays are used to assess lung changes but do not directly confirm CF by analyzing genetic mutations.

C) Incorrect. Pulmonary function tests assess lung function but do not confirm CF by analyzing genetic mutations.

D) Correct. Genetic testing is a diagnostic procedure commonly used to confirm CF by analyzing the specific CF gene mutations present in an individual.

A. "CF is more common in females than males." B. "Being of African descent significantly increases the risk of developing CF." C. "A family history of CF is a risk factor, as it increases the likelihood of inheriting the mutated gene." D. "CF is unrelated to ethnicity, and anyone can be equally affected."

Correct Answer is C

Explanation

A) Incorrect. CF occurs at a similar frequency in both males and females.

B) Incorrect. CF is not significantly associated with any specific ethnicity, and the risk is not influenced by being of African descent.

C) Correct. A family history of CF increases the risk because CF is an autosomal recessive genetic disorder, and having affected family members increases the likelihood of carrying CF gene mutations.

D) Incorrect. While CF can affect individuals from any ethnicity, it is primarily a genetic disorder, and family history plays a crucial role in the risk of inheritance.

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A nurse is explaining the pathophysiology of cystic fibrosis (CF) to a newly diagnosed patient. Which statement accurately describes the genetic basis of CF?

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Naxlex Comprehensive Predictor Exams

A client with suspected cystic fibrosis (CF) is undergoing diagnostic testing. What diagnostic procedure is often used to confirm CF by analyzing the genetic mutations present?

Correct Answer is D

Explanation

A nurse is discussing the risk factors for cystic fibrosis (CF) with a client. Which statement accurately identifies a risk factor associated with CF?

Correct Answer is C

Explanation

A nurse is educating a client about the diagnostic process for cystic fibrosis (CF). What diagnostic test measures the concentration of chloride ions in sweat and is often used to confirm CF?

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