ATI RN
ATI Pathophysiology Exam 2
1. A 22-year-old was recently diagnosed with acquired immunodeficiency syndrome (AIDS). Which decreased lab finding would be expected to accompany this virus?
- A. CD4 helper T cells
- B. CD8 helper T cells
- C. CDC cells
- D. CDC10 cells
Correct answer: A
Rationale: In a person diagnosed with AIDS, a decrease in CD4 helper T cells is expected. These cells are critical for the immune system's proper functioning, and their reduction weakens the body's ability to fight infections. CD8 helper T cells (Choice B) are not typically decreased in AIDS. CDC cells (Choice C) and CDC10 cells (Choice D) are not relevant terms in this context, making them incorrect choices.
2. A public health nurse is responsible for the administration of numerous immunizations. Which of the following guidelines regarding anaphylaxis should the nurse adhere to?
- A. The patient should be observed for anaphylaxis for 1 minute after administration.
- B. The patient should be observed for anaphylaxis for 5 minutes after administration.
- C. The patient should be observed for anaphylaxis for 30 minutes after administration.
- D. The patient should be observed for anaphylaxis for 90 minutes after administration.
Correct answer: C
Rationale: The correct answer is C: 'The patient should be observed for anaphylaxis for 30 minutes after administration.' This is because anaphylaxis can occur within minutes of administration of an immunization. By observing the patient for 30 minutes, the nurse can promptly identify and manage any signs of anaphylaxis. Choices A, B, and D are incorrect as they suggest shorter or longer observation periods, which may not be sufficient to detect and respond to anaphylaxis in a timely manner.
3. In a patient with renal failure secondary to an overdose of a nephrotoxic drug, which assessment findings would the nurse recognize as being most suggestive of impaired erythropoiesis?
- A. Frequent infections and low neutrophil levels
- B. Fatigue and increased heart rate
- C. Agitation and changes in cognition
- D. Increased blood pressure and peripheral edema
Correct answer: A
Rationale: Impaired erythropoiesis refers to a decreased production of red blood cells. This can lead to anemia, resulting in symptoms like fatigue and increased heart rate (Choice B). However, the question specifically asks about assessment findings suggestive of impaired erythropoiesis. In this context, frequent infections and low neutrophil levels (Choice A) are more directly related to impaired erythropoiesis due to the impact of anemia on the immune system. Frequent infections are common in anemia due to a compromised immune response, and low neutrophil levels can be seen in conditions of impaired erythropoiesis. Agitation and changes in cognition (Choice C) are more indicative of neurological issues, while increased blood pressure and peripheral edema (Choice D) are commonly associated with renal failure but not specifically related to impaired erythropoiesis.
4. A patient being treated for tuberculosis is determined to be drug resistant. Which of the following medications will the patient be resistant to in the treatment of tuberculosis?
- A. Isoniazid (INH) and rifampin
- B. Carbamazepine (Tegretol) and phenytoin (Dilantin)
- C. Dextroamphetamine (Dexedrine) and doxapram (Dopram)
- D. Propranolol (Inderal) and sotalol (Betapace)
Correct answer: A
Rationale: In the treatment of tuberculosis, drug resistance commonly develops against medications like Isoniazid (INH) and rifampin. These two drugs are key components of the standard anti-tuberculosis treatment regimen. Choices B, C, and D are unrelated medications that are not used in the treatment of tuberculosis. Carbamazepine and phenytoin are anticonvulsants, dextroamphetamine is a stimulant, and propranolol and sotalol are used for cardiovascular conditions.
5. Which of the following is a common cause of mechanical small intestine obstruction?
- A. Infection
- B. Postoperative adhesions
- C. Tumors
- D. Foreign body
Correct answer: B
Rationale: Postoperative adhesions are a common cause of mechanical small intestine obstruction. Adhesions can form after abdominal surgery, causing bands of scar tissue that may twist or pull the intestines, leading to obstruction. This is a more common cause compared to infection, tumors, or foreign bodies. Infection may lead to inflammation but is not a typical cause of mechanical obstruction. Tumors and foreign bodies can cause blockages but are less common than postoperative adhesions.
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