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?

"CF primarily causes airway constriction due to inflammation."

"In CF, the thickened mucus in the airways leads to chronic inflammation, infections, and lung damage."

"CF results in the overproduction of surfactant, causing respiratory distress."

"The CFTR protein in the lungs fails to produce enough oxygen for normal breathing."

Answer and Explanation

The Correct Answer is B

A) Incorrect. While inflammation can be a consequence of CF, it is not the primary cause of airway constriction.

B) Correct. In CF, thickened mucus accumulates in the airways, leading to chronic inflammation, recurrent infections, and progressive lung damage.

C) Incorrect. CF does not result in the overproduction of surfactant, which is a substance that helps reduce surface tension in the lungs.

D) Incorrect. The CFTR protein does not produce oxygen but rather regulates chloride ion and water transport in the lungs

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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. Coughing forcefully B. Controlled breathing exercises C. Huff coughing D. Exercising vigorously

Correct Answer is C

Explanation

A) Incorrect. While coughing is important, huff coughing is a more effective and less strenuous airway clearance technique for CF patients.

B) Incorrect. Controlled breathing exercises may help with relaxation but are not the primary airway clearance technique.

C) Correct. Huff coughing is a technique where the client takes a deep breath and forcefully exhales in short bursts, helping to move mucus from the airways.

D) Incorrect. Vigorous exercise is beneficial for CF patients but should not replace specific airway clearance techniques.

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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?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is B

Explanation

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Correct Answer is C

Explanation

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