A client is inquiring about the genetic basis of cystic fibrosis (CF). Which statement by the nurse provides an accurate explanation?

"CF is caused by a dominant genetic mutation that always manifests in affected individuals."

"CF results from the presence of two recessive genetic mutations, one inherited from each parent."

"CF is due to a spontaneous genetic mutation that occurs during a person's lifetime."

"CF is exclusively caused by environmental factors and is not related to genetics."

Answer and Explanation

The Correct Answer is B

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) Correct. CF is caused by the inheritance of two recessive genetic mutations, one from each parent, resulting in defective CFTR protein function.

C) Incorrect. CF is primarily a genetic disorder present from birth, not one caused by spontaneous mutations during a person's lifetime.

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

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Correct Answer is C

Explanation

A) Incorrect. PERT is not primarily used to control blood sugar levels; it is used to improve nutrient absorption.

B) Incorrect. While CF management aims to improve lung function, PERT is specifically used to address pancreatic insufficiency and digestive issues.

C) Correct. The primary purpose of PERT in CF management is to replace the missing digestive enzymes and aid in the digestion of fats and nutrients.

D) Incorrect. PERT does not increase mucus production in the airways; it is focused on the digestive system.

A. Genetic testing B. Sweat chloride test C. Chest X-ray D. Pulmonary function test

Correct Answer is B

Explanation

A) Incorrect. Genetic testing can confirm CF but is not typically the initial diagnostic test used in infants with symptoms suggestive of CF.

B) Correct. The sweat chloride test is often used as the initial diagnostic test to assess for CF in infants who exhibit symptoms.

C) Incorrect. Chest X-rays may be used to assess lung changes in individuals with CF but are not typically the initial diagnostic test in infants.

D) Incorrect. Pulmonary function tests are used to evaluate lung function but are not typically the initial diagnostic test for CF in infants.

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A client is inquiring about the genetic basis of cystic fibrosis (CF). Which statement by the nurse provides an accurate explanation?

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Naxlex Comprehensive Predictor Exams

A nurse is discussing pancreatic enzyme replacement therapy (PERT) with a client who has cystic fibrosis (CF). What should the nurse emphasize as the purpose of PERT in CF management?

Correct Answer is C

Explanation

A nurse is explaining the diagnostic process for cystic fibrosis (CF) to a client and their family. What initial diagnostic test is often used to assess CF in infants who exhibit symptoms suggestive of the condition?

Correct Answer is B

Explanation

A nurse is educating a client with cystic fibrosis (CF) about airway clearance techniques. Which of the following airway clearance methods involves the use of a mechanical device to deliver high-frequency chest wall oscillations?

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?

A nurse is discussing the pathophysiological consequences of cystic fibrosis (CF) with a client. Which of the following best describes how CF affects the respiratory system?

A nurse is counseling a couple planning to start a family, and both partners have a family history of cystic fibrosis (CF). What should the nurse advise the couple regarding the genetic risk of having a child with CF?

A client with cystic fibrosis (CF) asks the nurse about the impact of CF on the respiratory system. What response by the nurse accurately describes the respiratory complications associated with CF?

A client with cystic fibrosis (CF) presents with clubbed fingers during a routine examination. What should the nurse explain to the client regarding the significance of clubbing in CF?

A nurse is caring for a child with cystic fibrosis (CF). What gastrointestinal symptom commonly observed in CF should the nurse be vigilant for?

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