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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. While an increased respiratory rate may occur, it does not directly lead to hyperinflation of the uninjured lung due to tension pneumothorax.
B. In a tension pneumothorax, air enters the pleural space and does not exhale effectively; it is not about exhalation.
C. Trapped air in the pleural cavity increases pressure, collapsing the lung and pushing mediastinal structures (like the heart) to the opposite side, thereby reducing venous return and cardiac output.
D. Retained CO2 is not a direct cause of tension pneumothorax; the main issue is the pressure from trapped air affecting lung function and hemodynamics.
Correct Answer is D
Explanation
A. Chancres are not associated with glomerulonephritis; this option is incorrect as it refers to syphilis, which does not cause this condition.
B. Glomerulonephritis typically leads to decreased urine output due to reduced GFR, not increased urine output.
C. Poor skin turgor is usually indicative of dehydration rather than hyperproteinemia; in glomerulonephritis, the issue is typically a loss of proteins in the urine, leading to edema.
D. In post-streptococcal glomerulonephritis, hypoproteinemia (loss of protein due to kidney damage) causes fluid to shift from the vascular space to tissues, resulting in edema.
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