ATI RN
ATI Pathophysiology Test Bank
1. DiGeorge syndrome is a primary immune deficiency caused by:
- A. Failure of B cells to mature
- B. Congenital lack of thymic tissue
- C. Failure of formed elements of blood to develop
- D. Selective IgG deficiency
Correct answer: B
Rationale: DiGeorge syndrome is caused by a congenital lack of thymic tissue, which plays a crucial role in T cell development and maturation, leading to immune deficiency. Choice A is incorrect because DiGeorge syndrome primarily affects T cells, not B cells. Choice C is incorrect as it is too broad and not specific to the thymus. Choice D is incorrect as selective IgG deficiency is a different condition unrelated to DiGeorge syndrome.
2. Of the following signs and symptoms of bowel obstruction, which is related primarily to small bowel obstruction rather than large bowel obstruction?
- A. Profuse vomiting.
- B. Cramping abdominal pain.
- C. Abdominal distention.
- D. High-pitched bowel sounds above the obstruction.
Correct answer: A
Rationale: Profuse vomiting is the classic sign of small bowel obstruction and rarely occurs with large bowel obstruction. Abdominal discomfort and distention are present in both small and large bowel obstructions, but distention is more common in large bowel obstruction. High-pitched bowel sounds indicate hyperperistalsis, which occurs early in obstruction.
3. Living organisms use oxygen to __________________.
- A. reduce heat production
- B. accept electrons for cellular metabolism
- C. release energy stored in the molecules of food
- D. remove metabolic wastes
Correct answer: C: release energy stored in the molecules of food
Rationale: The correct answer is C. Living organisms use oxygen to release energy stored in the molecules of food through a process called cellular respiration. This process involves breaking down glucose molecules in the presence of oxygen to produce energy in the form of ATP. Choice A is incorrect because oxygen does not directly reduce heat production in organisms. Choice B is incorrect because oxygen is involved in accepting electrons rather than donating them in cellular metabolism. Choice D is incorrect because the removal of metabolic wastes is not the primary role of oxygen in living organisms.
4. A nurse is planning care for a client who has osteoarthritis. Which of the following interventions should the nurse include?
- A. Administer opioids routinely for chronic pain.
- B. Instruct the client to avoid weight-bearing exercises.
- C. Apply heat to affected joints to reduce stiffness.
- D. Avoid physical activity to prevent joint damage.
Correct answer: C
Rationale: The correct intervention for a client with osteoarthritis is to apply heat to affected joints to reduce stiffness. Heat application helps improve circulation, relax muscles, and reduce discomfort in joints affected by osteoarthritis. Administering opioids routinely (Choice A) is not the first-line treatment for osteoarthritis and carries risks of dependency and side effects. Instructing the client to avoid weight-bearing exercises (Choice B) may lead to muscle weakness and reduced joint flexibility. Avoiding physical activity altogether (Choice D) can lead to further joint stiffness and compromised overall health.
5. What procedure is most appropriate for the assessment of an abdominal circumference related to a bowel obstruction?
- A. Measuring the abdomen after feedings
- B. Marking the point of measurement with a pen
- C. Measuring the circumference at the symphysis pubis
- D. Using a new tape measure with each assessment to ensure accuracy
Correct answer: B
Rationale: Marking the point of measurement ensures consistent and accurate assessments of abdominal circumference, especially important in conditions like bowel obstruction where changes need to be monitored closely.
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