ATI LPN
Questions of Respiratory System Questions
Question 1 of 5
Thrombocytosis is associated with:
Correct Answer: A
Rationale: Thrombocytosis elevated platelets (>450,000/μL) associates with acute leukemia (A), where marrow overproduction (e.g., CML) or reactive states raise counts, though thrombocytopenia often follows blast crisis. Bleeding tendency (B), hemophilia (C), and idiopathic purpura (D ITP) feature low platelets, causing hemorrhage, not excess. Purpura simplex is vascular, not platelet-driven. Acute leukemia's erratic hematopoiesis contrasts these hypocoagulable states, key in nursing for monitoring counts and anticipating bleeding or clotting risks in malignancy.
Question 2 of 5
Microangiopathic hemolytic anemia refers to hemolysis associated with which of the following:
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
The usual presenting complaint in Hodgkin's disease is:
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
All of the following are good prognostic findings in Hodgkin's disease, except:
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
Which of the following structures contains blood with the highest PCO2?
Correct Answer: C
Rationale: PCO2, or partial pressure of carbon dioxide, reflects the concentration of CO2 in blood, highest where metabolic waste accumulates and lowest where gas exchange removes it. The superior vena cava (SVC) carries deoxygenated blood from the upper body back to the heart, rich in CO2 from tissue metabolism, typically with a PCO2 of 45-46 mmHg, making it the highest among the options. Pulmonary veins carry oxygenated blood from the lungs to the heart after CO2 is offloaded in the alveoli, so their PCO2 is low (around 40 mmHg, arterial level). The midportion of pulmonary capillaries is where gas exchange occurs, transitioning from high venous PCO2 to lower arterial levels, averaging less than the SVC. Carotid bodies are chemoreceptors sensing blood gases, not a blood-containing structure, but even arterial blood they monitor has a PCO2 of about 40 mmHg. The SVC, as a major venous return vessel, consistently has the highest PCO2 due to its role in collecting metabolically produced CO2 before pulmonary gas exchange, distinguishing it from the other options.