ATI RN
Respiratory System Test Questions Questions
Question 1 of 5
The most abundant gas in the earth's atmosphere is
Correct Answer: D
Rationale: The correct answer is D: nitrogen. Nitrogen makes up about 78% of the Earth's atmosphere, making it the most abundant gas. This is due to the fact that nitrogen is a chemically stable element that forms diatomic molecules (N2) which are not easily broken down. Oxygen (A) makes up about 21% of the atmosphere, while water vapor (B) and argon (C) are present in much smaller quantities. Therefore, nitrogen is the most abundant gas in the Earth's atmosphere based on its high percentage composition.
Question 2 of 5
BCG vaccine is used to curb
Correct Answer: B
Rationale: The correct answer is B: Tuberculosis. BCG vaccine is specifically designed to prevent tuberculosis, which is a bacterial infection caused by Mycobacterium tuberculosis. The vaccine stimulates the immune system to provide protection against TB. Pneumonia (A), Emphysema (C), and Smallpox (D) are not targeted by the BCG vaccine. Pneumonia is usually caused by viruses or bacteria different from TB, Emphysema is a chronic lung condition unrelated to TB, and Smallpox is caused by the Variola virus, which is different from the bacteria causing TB. Therefore, the correct answer is B as BCG vaccine is used to curb tuberculosis.
Question 3 of 5
If the CO2 concentration in the blood increases, the breathing shall
Correct Answer: A
Rationale: When CO2 concentration in the blood increases, it leads to respiratory acidosis, causing the body to increase breathing rate to expel excess CO2 and restore pH balance. This increase in breathing helps eliminate CO2 through exhalation, thus the correct answer is A. Choice B is incorrect because an increase in CO2 concentration triggers an increase in breathing to remove the excess CO2, not decrease it. Choice C is incorrect because stopping breathing would be life-threatening and is not a physiological response to high CO2 levels. Choice D is incorrect because an increase in CO2 concentration does have an effect on breathing rate to maintain homeostasis.
Question 4 of 5
A nurse is caring for a client who is scheduled to undergo a thoracentesis. Which intervention would the nurse complete prior to the procedure?
Correct Answer: D
Rationale: The correct answer is D. Validating that informed consent has been given by the client is crucial before any invasive procedure to ensure the client understands the risks, benefits, and alternatives. It also respects the client's autonomy and right to make an informed decision. A: Measuring oxygen saturation before and after a 12-minute walk is not directly related to thoracentesis preparation. B: Verifying the client's understanding of complications is important but not the immediate priority before the procedure. C: Explaining the procedure to the client and family is essential but may not be the first step; ensuring informed consent comes before this step.
Question 5 of 5
A nurse is assessing a client who has suffered a nasal fracture. Which assessment would the nurse perform first?
Correct Answer: D
Rationale: The correct answer is D: Airway patency. Ensuring airway patency is the top priority in any client assessment, especially in cases of facial trauma like a nasal fracture. This is because compromised airway can lead to respiratory distress or failure. Assessing airway patency should always be the first step to ensure the client's ability to breathe. Facial pain (A) may be important but does not address immediate life-threatening concerns. Vital signs (B) are important but assessing airway patency takes precedence for client safety. Bone displacement (C) is relevant but does not address the immediate need to maintain airway patency.