A nurse is educating a client about the etiology of cystic fibrosis (CF). Which statement by the client accurately describes the genetic basis of CF?

"CF is caused by a single gene mutation, which can be inherited from one parent."

"CF results from a combination of genetic and environmental factors."

"CF occurs due to an X-linked genetic mutation passed from mother to daughter."

"CF is primarily caused by exposure to respiratory pathogens during infancy."

Answer and Explanation

The Correct Answer is A

A) Correct. CF is primarily caused by mutations in a single gene, the CFTR gene, and it can be inherited from one parent, resulting in a carrier state, or from both parents for the disease to manifest.

B) Incorrect. While genetic factors are the primary cause of CF, environmental factors can exacerbate symptoms but are not the root cause.

C) Incorrect. CF is not an X-linked genetic disorder; it follows an autosomal recessive pattern of inheritance.

D) Incorrect. CF is not caused by exposure to respiratory pathogens during infancy; it is primarily a genetic disorder.

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Correct Answer is B

Explanation

A) Incorrect. Protein intake is important for growth and repair but should not be limited in CF. High-calorie intake is more critical.

B) Correct. CF can lead to malabsorption of fat-soluble vitamins and calories, so a high-fat diet is recommended to support weight gain and nutrient absorption.

C) Incorrect. Dairy products are a good source of calcium and calories, and they are generally well-tolerated by CF patients. Avoiding them is not necessary.

D) Incorrect. Increasing sugary snacks is not advisable for CF patients. They need a balanced diet to meet their nutritional needs.

A. "Genetic testing is primarily used to diagnose CF in infants but is not necessary for older individuals." B. "Genetic testing is essential for diagnosing CF at any age, as it can confirm the presence of CF gene mutations." C. "Genetic testing is mainly used to determine the severity of CF symptoms but does not aid in diagnosis." D. "Genetic testing is reserved for family members of individuals already diagnosed with CF."

Correct Answer is B

Explanation

A) Incorrect. Genetic testing for CF is important for individuals of all ages, not limited to infants.

B) Correct. Genetic testing is a crucial diagnostic tool for confirming the presence of CF gene mutations, regardless of the individual's age.

C) Incorrect. Genetic testing is primarily used for diagnosis, not for determining the severity of CF symptoms.

D) Incorrect. Genetic testing is not reserved solely for family members of individuals already diagnosed with CF; it is used for diagnostic purposes in suspected cases of CF.

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A nurse is educating a client about the etiology of cystic fibrosis (CF). Which statement by the client accurately describes the genetic basis of CF?

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Naxlex Comprehensive Predictor Exams

A nurse is providing education to a client with cystic fibrosis (CF). Which dietary recommendation is most appropriate for the client?

Correct Answer is B

Explanation

A nurse is discussing the role of genetic testing in cystic fibrosis (CF) diagnosis with a client. What should the nurse emphasize regarding the importance of genetic testing for CF?

Correct Answer is B

Explanation

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A nurse is educating a client about the etiology of cystic fibrosis (CF). Which statement by the client accurately describes the genetic basis of CF?

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