ATI RN
WGU Pathophysiology Final Exam
1. When a healthcare professional notices that a patient has type O blood, they realize that anti-_____ antibodies are present in the patient's body.
- A. A only
- B. B only
- C. A and B
- D. O
Correct answer: C
Rationale: Individuals with type O blood have both anti-A and anti-B antibodies in their body. This is because type O blood lacks A or B antigens on the surface of red blood cells, causing the body to produce antibodies against both A and B antigens. Therefore, the correct answer is C. Choice A and B only antibodies are incorrect because type O individuals have both anti-A and anti-B antibodies. Choice D is incorrect as O represents the blood type itself, not the antibodies present in the blood.
2. When the body produces antibodies against its own tissue, the condition is called:
- A. Alloimmunity
- B. Opsonization
- C. Autoimmunity
- D. Hypersensitivity
Correct answer: C
Rationale: Autoimmunity is the correct term for a condition where the body's immune system mistakenly targets its own tissues. Alloimmunity (Choice A) refers to an immune response against foreign tissue. Opsonization (Choice B) is a process where pathogens are marked for destruction by immune cells. Hypersensitivity (Choice D) involves an exaggerated immune response against antigens.
3. 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.
4. A patient is prescribed tadalafil (Cialis) for erectile dysfunction. What critical contraindication should the nurse discuss with the patient?
- A. Use of nitrates
- B. Use of antihypertensive medications
- C. History of hypertension
- D. History of peptic ulcer disease
Correct answer: A
Rationale: The correct answer is A: Use of nitrates. Tadalafil (Cialis) is contraindicated in patients taking nitrates due to the risk of severe hypotension. Nitrates potentiate the hypotensive effects of tadalafil, leading to a potentially life-threatening drop in blood pressure. Choices B, C, and D are incorrect because antihypertensive medications, history of hypertension, and history of peptic ulcer disease are not critical contraindications for tadalafil use. While caution may be needed in patients with certain conditions, the highest priority is addressing the interaction with nitrates.
5. An older adult man has moved to a long-term care facility, and the nurse is performing medication reconciliation. The resident's current medication regimen includes alfuzosin (Uroxatral). After considering the most likely indication for this drug, what potential problem should the nurse include in the resident's interdisciplinary plan of care?
- A. Impaired urinary elimination
- B. Ineffective sexual pattern
- C. Sexual dysfunction
- D. Functional urinary incontinence
Correct answer: C
Rationale: The correct answer is C, 'Sexual dysfunction.' Alfuzosin is commonly prescribed for benign prostatic hyperplasia (BPH), a condition that can lead to sexual dysfunction in older men. It is important to include this potential problem in the interdisciplinary plan of care to address the impact of the medication on the resident's sexual health. Choices A, B, and D are incorrect because while alfuzosin can affect urinary function, the primary concern related to this medication in this scenario is sexual dysfunction due to its indication for BPH.
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