ATI RN
Respiratory System Practice Questions Questions
Question 1 of 5
The rate and depth of breathing are governed by
Correct Answer: D
Rationale: The correct answer is D because the rate and depth of breathing are controlled by a respiratory center in the brainstem, which includes the medulla and pons. The medulla regulates the basic rhythm of breathing, while the pons helps adjust the rate and depth based on input from chemoreceptors and other factors. Choice A is incorrect because chemoreceptors in arterial walls primarily detect changes in blood pH and CO2 levels, not directly control breathing. Choice B is incorrect as baroreceptors in the diaphragm are more related to detecting stretch and pressure changes, not regulating breathing. Choice C is incorrect as the partial pressure of O2 in the atmosphere does not directly control breathing but rather influences oxygen exchange in the lungs.
Question 2 of 5
In human beings, CO2 concentration in the inspired and expired air is respectively
Correct Answer: D
Rationale: The correct answer is D (0.03% and 4.0%). The inspired air contains approximately 0.03% CO2, as the atmosphere has a low CO2 concentration. During expiration, the CO2 concentration in the air increases due to the removal of oxygen and the addition of CO2 from cellular respiration, resulting in an average of around 4.0% CO2 in expired air. Choices A, B, and C are incorrect because they do not accurately reflect the typical CO2 concentrations in inspired and expired air in human beings.
Question 3 of 5
A nurse obtains the health history of a client who is recently diagnosed with lung cancer and identifies that the client has a 60–pack-year smoking history. Which action is most important for the nurse to take when interviewing this client?
Correct Answer: C
Rationale: The correct answer is C: Maintain a nonjudgmental attitude to avoid causing the client to feel guilty. This is important because the nurse needs to establish trust with the client to obtain accurate information about their health history. Being nonjudgmental creates a safe space for the client to share openly, which is crucial for effective assessment and planning of care. Choice A is incorrect because while it is important for the client to quit smoking, addressing this issue at the first encounter may not be the most effective approach and could potentially alienate the client. Choice B is also incorrect as the focus should be on building rapport and obtaining accurate information relevant to the client's current health status. Encouraging honesty about substance use is important but not the most critical action in this context. Choice D is incorrect as the nurse should provide information and support to the client based on the client's needs and wishes, rather than making assumptions about their preferences or prognosis.
Question 4 of 5
A client is wearing a Venturi mask to deliver oxygen and the dinner tray has arrived. What action by the nurse is best?
Correct Answer: B
Rationale: The correct answer is B. Switching to a nasal cannula during meals allows the client to eat comfortably while still receiving oxygen. This ensures proper oxygenation during meals without compromising nutrition. Option A is incorrect because oxygen should not be turned off without a healthcare provider's order. Option C is incorrect as lifting the mask can reduce oxygen delivery. Option D is incorrect as oxygen should not be turned off abruptly. Switching to a nasal cannula is the safest and most appropriate option for clients using a Venturi mask during meals.
Question 5 of 5
A client admitted for pneumonia has been tachypneic for several days. When the nurse starts an IV to give fluids the client questions this action saying " have been drinking tons of water. How am I dehydrated?" What response by the nurse is best?
Correct Answer: A
Rationale: The correct answer is A because tachypnea, or rapid breathing, can lead to excessive loss of fluids through respiration, causing dehydration. This explanation educates the client on the physiological reason behind their dehydration. Choice B is incorrect as not all pneumonia patients are dehydrated. Choice C is incorrect as it does not address the dehydration concern. Choice D is incorrect as it does not provide a clear explanation of the link between tachypnea and dehydration.