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 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. Postural drainage B. Autogenic drainage C. Positive expiratory pressure (PEP) therapy D. High-frequency chest wall oscillation (HFCWO)

Correct Answer is D

Explanation

A) Incorrect. Postural drainage involves positioning the body to help drain mucus but does not use a mechanical device.

B) Incorrect. Autogenic drainage is a technique that involves controlled breathing and airflow, not a mechanical device.

C) Incorrect. PEP therapy uses a device to provide positive pressure during exhalation but is different from HFCWO.

D) Correct. High-frequency chest wall oscillation (HFCWO) involves using a mechanical device to deliver oscillations to the chest wall, helping to mobilize and clear mucus from the airways.

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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 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 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?

Correct Answer is D

Explanation

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