Nokea
Inflammation of the lungs covering causing severe chest pain is
- A. Emphysema
- B. Pleurisy
- C. Asphyxia
- D. Hypoxia
Correct Answer: B
Rationale: The correct answer is B: Pleurisy. Pleurisy is inflammation of the pleura, the lining around the lungs, causing severe chest pain. Emphysema (A) is a chronic lung condition causing shortness of breath, not chest pain. Asphyxia (C) is a condition of insufficient oxygen, not related to lung inflammation. Hypoxia (D) is low oxygen levels in tissues, not specific to lung covering inflammation. Pleurisy is the only choice directly related to inflammation of the lungs' covering, making it the correct answer.
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A patient has been diagnosed with pulmonary hypertension, in which the capillaries in the alveoli are squeezed excessively. The nurse should recognize a disturbance in what aspect of normal respiratory function?
- A. Acid-base balance
- B. Perfusion
- C. Diffusion
- D. Ventilation
Correct Answer: B
Rationale: The correct answer is B: Perfusion. Pulmonary hypertension affects blood flow through the lungs, leading to decreased perfusion. This results in inadequate oxygenation of the blood. Acid-base balance (A) is maintained by the kidneys and lungs, not directly impacted by pulmonary hypertension. Diffusion (C) refers to gas exchange in the alveoli, which is affected by perfusion but not the primary disturbance in pulmonary hypertension. Ventilation (D) is the process of moving air in and out of the lungs, which is not primarily affected by pulmonary hypertension; it is more related to conditions like COPD.
Fick's law of diffusion is related to
- A. Diffusion and Surface area
- B. Diffusion and membrane potential
- C. Diffusion and water content
- D. Diffusion and pore diameter
Correct Answer: A
Rationale: Fick's law of diffusion states that the rate of diffusion is directly proportional to the surface area and concentration gradient, and inversely proportional to the distance over which diffusion occurs. Therefore, Choice A - Diffusion and Surface area is correct because surface area directly affects the rate of diffusion. Choices B, C, and D are incorrect as they do not directly relate to Fick's law. B is incorrect as membrane potential is not a factor in Fick's law. C is incorrect as water content is not a key factor in the law of diffusion. D is incorrect as pore diameter is not explicitly mentioned in Fick's law.
The organ of the respiratory system that traps bacteria with a ring of tonsils is the:
- A. nose
- B. pharynx
- C. larynx
- D. trachea
Correct Answer: B
Rationale: The correct answer is B: pharynx. The pharynx is the organ that traps bacteria with its tonsils. The tonsils are located in the pharynx and act as the body's first line of defense against pathogens entering the respiratory system. The nose (choice A) is responsible for warming, humidifying, and filtering air, but it does not trap bacteria with tonsils. The larynx (choice C) is involved in sound production and preventing food from entering the airway, not trapping bacteria. The trachea (choice D) is the windpipe that carries air to and from the lungs, but it does not have tonsils to trap bacteria.
Priority Decision: To reduce the risk for most occupational lung diseases, what is the most important measure the occupational nurse should promote?
- A. Maintaining smoke-free work environments for all employees.
- B. Using masks and effective ventilation systems to reduce exposure to irritants.
- C. Inspection and monitoring of workplaces by national occupational safety agencies.
- D. Requiring periodic chest x-rays and pulmonary function tests for exposed employees.
Correct Answer: D
Rationale: Requiring periodic chest x-rays and pulmonary function tests for exposed employees is crucial in early detection and prevention of occupational lung diseases.
Nurse Reese is caring for a client hospitalized with acute exacerbation of chronic obstructive pulmonary disease. Which of the following would the nurse expect to note on assessment of this client?
- A. Hypocapnia
- B. A hyperinflated chest noted on the chest x-ray.
- C. Increased oxygen saturation with exercise.
- D. A widened diaphragm noted on the chest x-ray.
Correct Answer: B
Rationale: The correct answer is B: A hyperinflated chest noted on the chest x-ray. In COPD, air trapping leads to hyperinflation of the lungs, causing the chest to appear hyperinflated on x-ray. This is due to the increased residual volume and decreased expiratory flow rates in COPD.
Incorrect choices:
A: Hypocapnia is unlikely in COPD as patients typically retain carbon dioxide due to impaired gas exchange.
C: Increased oxygen saturation with exercise is unlikely in COPD as these patients often have decreased oxygen saturation due to impaired gas exchange.
D: A widened diaphragm would not be a typical finding on chest x-ray in COPD; hyperinflated lungs are more characteristic.