ATI RN
Pathophysiology Practice Exam
1. A patient develops itching and burning of the vaginal vault while taking an anti-infective to treat strep throat. What fungal agent has most likely caused the burning and itching?
- A. Cryptococcus neoformans
- B. Candida albicans
- C. Aspergillus
- D. Dermatophytes
Correct answer: B
Rationale: The correct answer is B: Candida albicans. Candida albicans is a common fungal agent responsible for causing vaginal yeast infections characterized by itching and burning. It is known to overgrow in the vagina, especially when the normal vaginal flora is disrupted, such as during antibiotic use. Cryptococcus neoformans is more associated with causing meningitis in immunocompromised individuals, not vaginal symptoms. Aspergillus is more commonly associated with lung infections and allergic reactions, not vaginal infections. Dermatophytes typically cause skin infections like ringworm, not vaginal symptoms.
2. A client with cystic fibrosis is admitted with a pulmonary exacerbation. Which intervention should the nurse prioritize?
- A. Administer a high-calorie, high-protein diet.
- B. Initiate airway clearance techniques.
- C. Encourage the client to maintain an active lifestyle.
- D. Monitor for signs of respiratory distress.
Correct answer: B
Rationale: During a pulmonary exacerbation in cystic fibrosis, the priority intervention is to initiate airway clearance techniques. These techniques help clear mucus from the airways, improving ventilation and reducing the risk of respiratory complications. Administering a high-calorie, high-protein diet is beneficial for overall nutrition but is not the priority during an exacerbation. Encouraging an active lifestyle is important for long-term health but does not address the immediate need for managing exacerbations. Monitoring for signs of respiratory distress is important, but initiating airway clearance techniques takes precedence in the management of pulmonary exacerbations in cystic fibrosis.
3. A patient is administered a nucleotide reverse transcriptase inhibitor in combination with a nonnucleotide reverse transcriptase inhibitor. What is the main rationale for administering these medications together?
- A. They improve treatment adherence.
- B. They reduce the duration of illness.
- C. They exhibit synergistic antiviral effects.
- D. They prevent opportunistic infections.
Correct answer: C
Rationale: The main rationale for administering a nucleotide reverse transcriptase inhibitor in combination with a nonnucleotide reverse transcriptase inhibitor is that they exhibit synergistic antiviral effects when used together. This combination enhances their antiviral activity against HIV by targeting different steps in the viral replication cycle. Choice A is incorrect because the rationale for combining these medications is based on their antiviral effects, not treatment adherence. Choice B is incorrect because the primary purpose of combination therapy is not to reduce the duration of illness but to improve treatment efficacy. Choice D is incorrect as the main focus of this combination is not on preventing opportunistic infections but on directly targeting the HIV virus.
4. Which of the following mediators of inflammation causes increased capillary permeability and pain?
- A. Serotonin
- B. Histamine
- C. Bradykinin
- D. Nitric oxide
Correct answer: C
Rationale: Bradykinin is the correct answer. It is a potent mediator of inflammation that causes increased capillary permeability and is responsible for the pain associated with inflammation. Serotonin and histamine are also mediators of inflammation, but they are not primarily known for increasing capillary permeability or inducing pain. Nitric oxide is involved in various physiological processes but is not a primary mediator of inflammation that causes increased capillary permeability and pain.
5. A nurse is teaching a class about immune deficiencies, and a person from the audience asks which cells are affected by severe combined immune deficiency (SCID) syndrome, and the nurse answers:
- A. B cell deficits
- B. T cell deficits
- C. Complement deficits
- D. B and T cell deficits
Correct answer: D
Rationale: The correct answer is D: B and T cell deficits. Severe combined immune deficiency (SCID) syndrome affects both B and T cells, leading to a severe impairment in the immune system's ability to fight infections. Choice A (B cell deficits) is incorrect because SCID affects not only B cells but also T cells. Choice B (T cell deficits) is incorrect as SCID is characterized by deficits in both B and T cells. Choice C (Complement deficits) is incorrect as SCID primarily involves B and T cell deficiencies rather than complement deficiencies.
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