Nokea
The covering of the lung is called
- A. Pericardium
- B. Perichondrium
- C. Pleural membrane/ pleura
- D. Peritoneum
Correct Answer: C
Rationale: The correct answer is C: Pleural membrane/pleura. The pleural membrane is a double-layered serous membrane that covers the lungs. The visceral pleura is attached to the lung surface, while the parietal pleura lines the chest cavity. This arrangement helps reduce friction and allows the lungs to expand during breathing.
A: Pericardium covers the heart, not the lungs.
B: Perichondrium covers cartilage, not the lungs.
D: Peritoneum covers abdominal organs, not the lungs.
Therefore, the correct choice is C because it specifically refers to the covering of the lungs.
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A nurse auscultates a harsh hollow sound over a client's trachea and larynx. What action would the nurse take first?
- A. Document the findings.
- B. Administer oxygen therapy.
- C. Position the client in high-Fowler position.
- D. Administer prescribed albuterol.
Correct Answer: A
Rationale: The correct action is to document the findings first because the harsh hollow sound over the trachea and larynx could indicate a potential issue with the airway or respiratory function. Documenting the findings allows for accurate communication with other healthcare providers and helps track changes in the client's condition. Administering oxygen therapy or albuterol should not be done without further assessment or orders from a healthcare provider. Positioning the client in high-Fowler position may not be the priority until a more thorough assessment is completed.
Under quiet conditions, blood returning to the heart retains about ________ of its oxygen content.
- A. 25 percent
- B. 50 percent
- C. 75 percent
- D. 90 percent
Correct Answer: C
Rationale: The correct answer is C (75 percent) because under quiet conditions, the venous blood returning to the heart still contains a significant amount of oxygen due to the efficient extraction of oxygen by tissues. This oxygen extraction process typically leaves around 25 percent of oxygen in the venous blood, which is then returned to the heart. Choices A (25 percent), B (50 percent), and D (90 percent) are incorrect because they do not accurately reflect the amount of oxygen retained in the blood under quiet conditions. Option A (25 percent) is the amount typically extracted by tissues, so it cannot be the correct answer. Option B (50 percent) is too high, as more oxygen is extracted by tissues. Option D (90 percent) is also too high, as it overestimates the amount of oxygen retained in venous blood.
Which of the following is NOT found in lung tissue?
- A. blood capillaries
- B. alveolar sacs
- C. interstitial fluid
- D. muscle
Correct Answer: D
Rationale: The correct answer is D: muscle. Lung tissue does not contain muscle tissue; instead, it is primarily composed of alveolar sacs for gas exchange, blood capillaries for oxygen exchange, and interstitial fluid for support. Muscles are not part of the structure of the lungs as they are not involved in the respiratory process. In summary, muscles are not found in lung tissue, making option D the correct choice.
Which assessment findings aren't consistent with a client diagnosis of right-sided heart failure?
- A. Collapsed neck veins
- B. Distended abdomen
- C. Dependent edema
- D. Decreased appetite
Correct Answer: A
Rationale: The correct answer is A because collapsed neck veins are not consistent with right-sided heart failure. In right-sided heart failure, venous congestion leads to jugular venous distention, not collapse. Distended abdomen (choice B) occurs due to fluid accumulation in the abdomen, a common finding in right-sided heart failure. Dependent edema (choice C) results from fluid retention in the lower extremities, also seen in right-sided heart failure. Decreased appetite (choice D) can be present due to abdominal discomfort from fluid accumulation. Therefore, the presence of collapsed neck veins is the only assessment finding that is not indicative of right-sided heart failure.
Client history and assessment reveals all of these findings. Which finding supports the diagnosis of PE?
- A. Client was recently in a motor vehicle accident.
- B. Client participated in an aerobic exercise program for 6 months.
- C. Client gave birth to youngest child 1 year ago.
- D. Client was on bedrest 6 hours after diagnostic procedure.
Correct Answer: A
Rationale: The correct answer is A. Recent trauma or immobility due to a motor vehicle accident increases the risk of PE. Aerobic exercise (B), childbirth over a year ago (C), and brief bedrest (D) are less likely risk factors.