A nurse is teaching a patient diagnosed with emphysema to use the pursed-lip method of breathing. The purpose of this method of breathing is to promote

oxygen intake

strengthening of the diaphragm and intercostal muscles

carbon dioxide elimination

mucus removal

Answer and Explanation

The Correct Answer is C

A. Although pursed-lip breathing may indirectly aid oxygen intake by preventing airway collapse, its primary benefit is to help with carbon dioxide removal.

B. Pursed-lip breathing does not directly strengthen respiratory muscles; it primarily helps with breath control.

C. In emphysema, air trapping occurs due to loss of lung elasticity. Pursed-lip breathing helps slow exhalation, which creates back pressure and assists in expelling trapped carbon dioxide.

D. Mucus removal is more effectively facilitated by other techniques like controlled coughing; pursed-lip breathing focuses on prolonged exhalation.

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Correct Answer is B

Explanation

A. Smoking is the leading cause of COPD, but it also significantly impacts the circulatory system, increasing the risk for cardiovascular diseases such as atherosclerosis and hypertension.

B. Kyphosis can alter lung expansion, potentially decreasing the V/Q (ventilation/perfusion) ratio to 0.6 by restricting air intake to the alveoli. This reduced ventilation impacts the V/Q balance, confirming decreased inhalation ability.

C. Respiratory acidosis typically causes bradypnea (slow breathing) due to CO₂ retention, rather than tachypnea. Tingling of the fingers is more associated with respiratory alkalosis.

D. For venous insufficiency, elevating the legs (higher than the heart) promotes venous return, not lowering the feet.

A. Stable angina. B. Pulmonary embolus. C. Myocardial infarction. D. Unstable angina.

Correct Answer is A

Explanation

A. Stable angina is characterized by chest pain or discomfort that occurs with physical exertion or stress and is relieved with rest or nitroglycerin.

B. Pulmonary embolus typically causes sudden shortness of breath, chest pain, and possible hemoptysis, but not a pattern that resolves with rest or cessation of activity.

C. Myocardial infarction (MI) typically causes prolonged chest pain that does not resolve quickly and is not relieved by rest.

D. Unstable angina is more severe than stable angina, occurring at rest or with minimal activity, and does not resolve quickly. It also increases in frequency and intensity over time.

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A nurse is teaching a patient diagnosed with emphysema to use the pursed-lip method of breathing. The purpose of this method of breathing is to promote

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Naxlex Comprehensive Predictor Exams

Which one statement is true? VQ ratio: norm = 0.8

Correct Answer is B

Explanation

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Correct Answer is A

Explanation

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