ATI RN
Pathophysiology Final Exam
1. During a clinical assessment of a 68-year-old client who has suffered a head injury, a neurologist suspects that the client has sustained damage to her vagus nerve (CN X). Which assessment finding is most likely to lead the physician to this conclusion?
- A. The client has difficulty swallowing.
- B. The client has loss of gag reflex.
- C. The client has an inability to smell.
- D. The client has impaired eye movement.
Correct answer: B
Rationale: The correct answer is B. Damage to the vagus nerve can result in the loss of the gag reflex, which is a key indicator for the neurologist. Difficulty swallowing (Choice A) is more associated with issues related to the glossopharyngeal nerve (CN IX) and hypoglossal nerve (CN XII). An inability to smell (Choice C) is related to the olfactory nerve (CN I), and impaired eye movement (Choice D) is typically associated with damage to the oculomotor nerve (CN III), trochlear nerve (CN IV), or abducens nerve (CN VI), not the vagus nerve.
2. Which of the following statements describes an active cellular membrane exchange process?
- A. Sodium moving out of cells and potassium moving into cells
- B. The movement of water from an area of low solute concentration to an area of high solute concentration
- C. The movement of insulin using a protein to travel across the cell membrane
- D. Oxygen moving across the pulmonary capillaries to an area of high carbon dioxide
Correct answer: A
Rationale: The correct answer is A. In active transport, energy is expended to move substances against their concentration gradient. Sodium moving out of cells and potassium moving into cells is an example of active transport because it requires energy to pump these ions across the cell membrane against their concentration gradients. Choices B, C, and D describe passive processes where substances move along their concentration gradients without the input of energy.
3. A patient is being administered chemotherapeutic agents for the treatment of cancer. Which of the following blood cells will be stimulated by the colony-stimulating factors in response to the effects of the chemotherapy?
- A. White blood cells
- B. Red blood cells
- C. Phagocytes
- D. Myocardial cells
Correct answer: A
Rationale: The correct answer is White blood cells. Colony-stimulating factors stimulate the production of white blood cells in response to the effects of chemotherapy, as it can lead to myelosuppression. Red blood cells are not directly stimulated by colony-stimulating factors. Phagocytes are a type of white blood cell involved in immune responses, but they are not specifically stimulated by colony-stimulating factors. Myocardial cells are cardiac muscle cells and are not directly involved in the response to chemotherapy-induced myelosuppression.
4. A hospital client is at a high risk of developing bacterial endocarditis. Which of the following prophylactic measures is likely to be most effective?
- A. Avoiding exposure to individuals known to carry the streptococcus bacterium
- B. Daily administration of low-dose corticosteroids
- C. Prophylactic antimicrobial therapy before any invasive procedure
- D. Routine vaccinations against meningococcal and pneumococcal infections
Correct answer: C
Rationale: Prophylactic antimicrobial therapy before any invasive procedure is the most effective measure in preventing bacterial endocarditis in at-risk individuals. This measure helps to reduce the risk of bacterial infection during invasive procedures, which can lead to endocarditis. Choice A is incorrect as avoiding exposure to individuals with streptococcus does not address the primary preventive measure needed. Choice B is incorrect as corticosteroids do not prevent bacterial endocarditis, and daily administration is not the recommended prophylactic measure. Choice D is incorrect as routine vaccinations against meningococcal and pneumococcal infections are important for other conditions but not specifically for preventing bacterial endocarditis.
5. A female client with bone metastases secondary to lung cancer is admitted for palliative radiation treatment and pain control. The client is currently experiencing pain that she rates at 9 out of 10. Which of the following nonpharmacologic treatments is most likely to be a useful and appropriate supplement to pharmacologic analgesia at this point?
- A. Teaching the client guided imagery and meditation
- B. Initiating neurostimulation
- C. Heat therapy
- D. Relaxation and distraction
Correct answer: D
Rationale: In the scenario described, the client is experiencing high pain levels, rated at 9 out of 10. Relaxation and distraction techniques are effective nonpharmacologic interventions for managing pain. Teaching the client guided imagery and meditation (Choice A) can also be beneficial; however, in this acute situation of severe pain, relaxation and distraction techniques are more likely to provide immediate relief. Initiating neurostimulation (Choice B) and heat therapy (Choice C) may not be suitable for immediate pain relief in this scenario and are not as commonly used for managing high pain levels in palliative care settings.
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