ATI LPN
Immune System Exam Questions Questions
Question 1 of 5
Which of the following pairs is mismatched?
Correct Answer: B
Rationale: Correct Answer: B (erythroid progenitor: megakaryocyte) Rationale: Erythroid progenitors differentiate into red blood cells, not megakaryocytes. Megakaryocytes arise from megakaryocyte-erythroid progenitors. The mismatch lies in the differentiation pathway. Summary: A: Monocyte progenitor differentiates into macrophages. C: Myeloid progenitor gives rise to neutrophils. D: Lymphoid progenitor differentiates into natural killer cells.
Question 2 of 5
Which finding during the assessment may trigger concerns about pernicious anemia?
Correct Answer: A
Rationale: The correct answer is A because pernicious anemia is caused by a deficiency in vitamin B12, which can occur after gastric bypass surgery due to malabsorption. Excessive fatigue is a common symptom of pernicious anemia. B: Hematuria is associated with kidney or bladder issues, not pernicious anemia. C: Pancytopenia is a decrease in all three blood cell types, not specific to pernicious anemia. D: Epistaxis is nosebleeds, which are not typically associated with pernicious anemia.
Question 3 of 5
Which hematological assessment statement is accurate?
Correct Answer: A
Rationale: The correct answer is A because liver enlargement is typically assessed by measuring the number of centimeters it can be palpated below the ribcage. This method helps determine if the liver is enlarged without the need for imaging. The other choices are incorrect because lymph node assessment usually starts in the neck, the spleen size is assessed by palpating the left upper quadrant of the abdomen, and petechiae are tiny red or purple spots that appear on the skin, not the sclera.
Question 4 of 5
A nurse is caring for a client who has a demand pacemaker inserted with the rate set at 72/min. Which of the following findings should the nurse expect?
Correct Answer: A
Rationale: The correct answer is A because a demand pacemaker only paces when the client's heart rate falls below the set rate (in this case, 72/min). Telemetry monitoring showing QRS complexes occurring at a rate of 74/min with no pacing spikes indicates that the client's intrinsic heart rate is above the set rate, so the pacemaker is not pacing. Choices B, C, and D are incorrect because they do not align with the expected outcome of a demand pacemaker set at 72/min. Choice B shows the QRS rate below the set rate with pacing spikes, choice C shows the QRS rate at the set rate with constant spikes, and choice D indicates bradycardia with pacing spikes, all of which are not in line with the functioning of a demand pacemaker.
Question 5 of 5
A nurse is assessing a client who has fluid volume overload from a cardiovascular disorder. Which of the following manifestations should the nurse expect?Select one that does not apply
Correct Answer: D
Rationale: The correct answer is D: Dry mucous membranes. In fluid volume overload, the body retains excess fluid leading to symptoms such as jugular vein distension, moist crackles in the lungs, and increased heart rate due to the heart's effort to pump excess fluid. Dry mucous membranes are not expected as fluid overload usually presents with signs of fluid accumulation. Dry mucous membranes are more indicative of dehydration or hypovolemia.