ATI RN
Practice Questions for Respiratory System Questions
Question 1 of 5
You are providing care for a client with recently diagnosed asthma. What key points will you be sure to include in your teaching plan for this client? (Choose all that apply.)
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
While assisting a patient with intermittent asthma to identify specific triggers of asthma, what should the nurse explain?
Correct Answer: d
Rationale: The correct answer is D because viral upper respiratory infections are a common precipitating factor in acute asthma attacks. This is important information for the patient to understand in order to help identify triggers and manage their asthma effectively. Viral infections can exacerbate asthma symptoms, so recognizing this connection can aid in prevention and treatment.
Question 3 of 5
A nurse auscultates a harsh hollow sound over a client's trachea and larynx. Which action should the nurse take first?
Correct Answer: A
Rationale: The correct answer is A: Document the findings. The nurse should first document the assessment findings to establish a baseline and communicate the abnormal sound to the healthcare team for further evaluation. This is crucial for accurate diagnosis and treatment planning. Administering oxygen therapy (B) may be needed depending on the client's oxygen saturation but is not the priority in this situation. Positioning the client in high-Fowlers position (C) may help with breathing but does not address the underlying cause of the abnormal sound. Administering albuterol (D) may be indicated for bronchospasm but should not be done without understanding the cause of the harsh hollow sound first.
Question 4 of 5
When Bohr effect occurs due to increased CO2 tension, Oxygen affinity of Hb decreases. The reason for increased CO2 tension is
Correct Answer: A
Rationale: The correct answer is A because an increase in P50 indicates a decrease in oxygen affinity of hemoglobin (Hb), as seen in the Bohr effect. When CO2 tension rises, it forms carbonic acid in the blood, leading to a decrease in pH. This decrease in pH causes a right shift in the oxygen-hemoglobin dissociation curve, resulting in lower oxygen affinity of Hb. Decreasing P50 reflects this reduced affinity. Choices B, C, and D are incorrect because a decrease in P50, high CO2 content, and high O2 content would not lead to a decrease in oxygen affinity as observed in the Bohr effect.
Question 5 of 5
Myoglobin is a muscle hemoglobin which exhibits Hyperbolic oxygen dissociation curve indicating its great affinity towards Oxygen (Non-cooperative binding). The Hyperbolic nature of the curve is due to
Correct Answer: A
Rationale: Step-by-step rationale for choice A being correct: 1. Myoglobin is composed of a single polypeptide chain with 153 amino acids, making it monomeric. 2. Being monomeric, myoglobin does not exhibit cooperative binding, leading to a hyperbolic oxygen dissociation curve. 3. The lack of multiple subunits in myoglobin results in non-cooperative binding and a hyperbolic curve. 4. The monomeric nature allows myoglobin to have a simple structure, enhancing its affinity for oxygen. Summary of why other choices are incorrect: B: High concentration in the muscle does not directly explain the hyperbolic curve. C: Being a muscle protein does not inherently determine the hyperbolic nature of the oxygen dissociation curve. D: Quaternary structure would involve multiple subunits, leading to cooperative binding and a sigmoidal oxygen dissociation curve.