A nurse is discussing the role of the cystic fibrosis transmembrane conductance regulator (CFTR) protein with a patient. What is the primary function of the CFTR protein in normal physiology?

"The CFTR protein regulates sodium absorption in the kidneys."

"The CFTR protein facilitates chloride secretion in the gastrointestinal tract."

"The CFTR protein controls the production of red blood cells in the bone marrow."

"The CFTR protein regulates mucus production and the movement of chloride ions in the respiratory and digestive systems."

Answer and Explanation

The Correct Answer is D

A) Incorrect. The CFTR protein primarily functions in the respiratory and digestive systems, not the kidneys.

B) Incorrect. While CFTR plays a role in chloride secretion, its primary role is related to mucus production and chloride ion movement in the respiratory and digestive systems.

C) Incorrect. The CFTR protein is not involved in the production of red blood cells.

D) Correct. The CFTR protein is responsible for regulating mucus consistency and chloride ion transport in the respiratory and digestive systems.

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Correct Answer is A

Explanation

A) Correct. Postural drainage and chest percussion help mobilize and remove thick, sticky mucus from the airways, which is crucial in managing CF.

B) Incorrect. While bronchodilators may be used, they are not the primary therapy for managing CF. Airway clearance techniques like postural drainage are more important.

C) Incorrect. Oxygen therapy should be administered as needed, but it is not required around the clock for all CF patients.

D) Incorrect. Deep breathing exercises should be encouraged regularly, not just during illness, to maintain airway clearance and lung function.

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

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.

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A nurse is discussing the role of the cystic fibrosis transmembrane conductance regulator (CFTR) protein with a patient. What is the primary function of the CFTR protein in normal physiology?

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Naxlex Comprehensive Predictor Exams

A nurse is caring for a pediatric client with cystic fibrosis. Which respiratory therapy technique should the nurse prioritize to help manage the client's condition?

Correct Answer is A

Explanation

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 role of the cystic fibrosis transmembrane conductance regulator (CFTR) protein with a patient. What is the primary function of the CFTR protein in normal physiology?

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