What is the underlying rationale for why a nurse assesses a client with emphysema for clinical indicators of hypoxia?
Increased mucus production blocks the alveoli
Infections decrease ventilation
Lack of adequate surface area for aeration
Inflammation of the bronchioles decreases breathing capacity
The Correct Answer is C
A. Increased mucus production blocking the alveoli is incorrect. While mucus production can be an issue in COPD, it is more characteristic of chronic bronchitis rather than emphysema.
B. Infections decreasing ventilation is incorrect. Although infections can worsen emphysema symptoms, they are not the primary cause of chronic hypoxia in these clients.
C. Lack of adequate surface area for aeration is correct. Emphysema leads to alveolar destruction and loss of elasticity, reducing the surface area available for gas exchange, which causes chronic hypoxia.
D. Inflammation of the bronchioles decreasing breathing capacity is incorrect. While airway inflammation is seen in conditions like asthma and chronic bronchitis, emphysema is primarily characterized by alveolar damage rather than airway inflammation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Sitting up and leaning over the bedside table (tripod position) helps maximize lung expansion, decreases work of breathing, and improves oxygenation in clients with COPD.
B. Fowler's position can help with breathing but does not provide as much relief as the tripod position.
C. A recliner may be comfortable but does not optimize lung expansion like the tripod position.
D. Lying prone is not beneficial for COPD patients and can make breathing more difficult.
Correct Answer is C
Explanation
A. A complete occlusion of the coronary artery is characteristic of an ST-segment elevation myocardial infarction (STEMI), not an NSTEMI.
B. Chest pain that resolves with rest is more indicative of stable angina rather than NSTEMI.
C. An NSTEMI occurs due to a partial occlusion of a coronary artery, leading to myocardial ischemia and damage without ST-segment elevation on an ECG.
D. Chest pain at rest can be seen in both unstable angina and NSTEMI, but it is not the defining feature of NSTEMI.
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