A 62-year-old man named John with a history of COPD is admitted for worsening shortness of breath. John's recent arterial blood gas (ABG) Indicates a PaCO2 level of 55 mmHg. Which of the following mechanisms is most compromised In John's respiratory system?
Mucociliary clearance system
Chemoreceptors response to changes in PaCO2
Reflex bronchoconstriction
Filtration of air
The Correct Answer is B
A. While impaired mucociliary clearance can contribute to respiratory symptoms in COPD, it is not directly reflected in the PaCO2 level.
B. In COPD, the respiratory drive can be blunted, leading to inadequate response to elevated PaCO2 levels by the chemoreceptors.
C. Reflex bronchoconstriction may occur in response to various stimuli but is not directly related to the PaCO2 level.
D. Filtration of air primarily refers to the removal of particulate matter and pathogens by the respiratory system and is not directly related to PaCO2 levels.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A ,B ,C ,D
No explanation
Correct Answer is ["B","C","D","E"]
Explanation
A. Avoid giving Paul a diet rich in fresh fruits, as they may contain harmful microorganisms that could cause infections. Instead, give him cooked or canned fruits that are safe to eat.
B. Strict adherence to Standard Precautions, which include hand hygiene, wearing gloves, gowns, and masks when necessary, is crucial to prevent infections in immunocompromised patients.
C. Do not place live plants in Paul's room, as they may harbor mold spores that could cause respiratory problems for Paul. Instead, use artificial plants or flowers that are easy to clean and disinfect.
D. Protective isolation measures, such as placing the patient in a private room and using appropriate barriers, can help minimize the risk of exposure to infectious agents.
E. Installing high-efficiency particulate air filters can help reduce airborne pathogens and allergens, which is important for patients with compromised immune systems.
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