ATI RN
Questions of Respiratory System Questions
Question 1 of 5
diaphragm relaxes and decrease thoracic space in which phase of respiration.
Correct Answer: B
Rationale: During expiration, the diaphragm relaxes, causing it to move upwards, which decreases the thoracic space. This leads to the expulsion of air from the lungs. In contrast, during inspiration, the diaphragm contracts and moves downwards, increasing the thoracic space to allow air to enter the lungs. Option C, Pause, does not involve any specific respiratory phase. Option D, both a and b, is incorrect because during inspiration, the diaphragm contracts and increases thoracic space. Therefore, the correct answer is B, expiration, as this phase specifically involves the relaxation of the diaphragm and the decrease in thoracic space.
Question 2 of 5
The home health nurse is making an initial call on a newly diagnosed tuberculosis (TB) patient. The patient lives with his wife and child. Which infection control instructions shouldn't the nurse include in the teaching plan?
Correct Answer: C
Rationale: The correct answer is C because TB is transmitted through droplet transmission, not airborne. The nurse should include hand hygiene (D) to prevent spread through contact, proper medication adherence (B) to treat TB effectively, and proper disposal of contaminated materials (A) to prevent spread through fomites. Implementing airborne precautions is not necessary for TB, as it does not remain suspended in the air for long periods.
Question 3 of 5
In teaching a patient with hypertension about controlling the illness the nurse recognizes that?
Correct Answer: D
Rationale: Rationale: D is correct because lifestyle modifications, such as exercise and diet changes, are essential for managing hypertension. This approach can help lower blood pressure without the need for drug therapy. A is incorrect because not all patients with elevated BP require medication. B is incorrect as weight loss is beneficial but not the only factor in controlling BP. C is incorrect because limiting salt intake remains important even if taking a diuretic.
Question 4 of 5
A client with pneumonia has a fever of 101.4° F (38.6° C) a nonproductive cough and an O2 saturation of 88%. The client is weak and needs assistance to get out of bed. Which client problem should the nurse assign as the priority?
Correct Answer: D
Rationale: The correct answer is D, Impaired gas exchange. This is the priority because the client's O2 saturation of 88% indicates poor oxygenation, which can lead to serious complications like hypoxemia. The fever and nonproductive cough are symptoms of pneumonia contributing to impaired gas exchange. Addressing this issue is crucial to prevent respiratory distress. A: Fatigue - While important, fatigue is a secondary concern compared to impaired gas exchange, which directly affects oxygenation and can be life-threatening. B: Hyperthermia - The client's fever is likely related to the pneumonia but managing impaired gas exchange takes precedence as it directly impacts oxygen delivery to tissues. C: Impaired mobility - While assisting the client out of bed is necessary, the priority is to address the underlying problem of impaired gas exchange to prevent respiratory compromise.
Question 5 of 5
If his R = 0.8 how much will his arterial pO2 fall?
Correct Answer: D
Rationale: The correct answer is D (50mmHg). To calculate the fall in arterial pO2, we use the formula: Fall in pO2 = (Initial pO2) - (Initial pO2 x R). If R = 0.8, the fall in pO2 = (100mmHg) - (100mmHg x 0.8) = 100mmHg - 80mmHg = 20mmHg. Therefore, the arterial pO2 will fall by 20mmHg. Among the choices, D (50mmHg) is the closest to the calculated value of 20mmHg, making it the correct answer. Other choices (A, B, C) do not align with the calculated fall in pO2.