ATI RN
Pathophysiology Practice Exam
1. When a healthcare professional is reviewing lab results and notices that the erythrocytes contain an abnormally low concentration of hemoglobin, the healthcare professional calls these erythrocytes:
- A. Hyperchromic
- B. Hypochromic
- C. Macrocytic
- D. Microcytic
Correct answer: B
Rationale: Erythrocytes with an abnormally low concentration of hemoglobin are called hypochromic. Hyperchromic refers to erythrocytes with an abnormally high concentration of hemoglobin. Macrocytic indicates larger than normal red blood cells, while microcytic refers to smaller than normal red blood cells. Therefore, in this scenario, the correct term is hypochromic.
2. How can a nurse determine the efficacy of a child's mebendazole treatment for roundworm after 3 weeks?
- A. Liver function tests
- B. Stool for ova and parasites
- C. Colonoscopy or sigmoidoscopy
- D. Rectal swab for culture
Correct answer: B
Rationale: The correct answer is B: Stool for ova and parasites. To assess the efficacy of treatment for roundworm, the nurse would examine the stool for ova (eggs) and parasites. This test helps determine if the infection has been cleared. Choices A, C, and D are incorrect because liver function tests are not commonly used to monitor roundworm treatment efficacy, and colonoscopy/sigmoidoscopy as well as rectal swab for culture are not routine diagnostic tests for assessing the effectiveness of mebendazole treatment for roundworm.
3. A young man has received a diagnosis of androgen deficiency and has been prescribed testosterone. At clinic follow-up appointments, the nurse should prioritize which of the following assessments?
- A. Bladder ultrasound and urine testing for glucose and ketones
- B. Weight and measurement of blood pressure
- C. Hearing assessment and abdominal girth measurement
- D. Deep tendon reflexes and random blood glucose testing
Correct answer: B
Rationale: In a patient receiving testosterone therapy for androgen deficiency, monitoring weight and blood pressure is crucial. Testosterone therapy can lead to weight gain and hypertension, making regular assessments of these parameters important to detect and manage any adverse effects. Choices A, C, and D are not the priority assessments for a patient on testosterone therapy. Bladder ultrasound and urine testing for glucose and ketones, hearing assessment and abdominal girth measurement, and deep tendon reflexes and random blood glucose testing are not directly related to the common side effects or monitoring requirements of testosterone therapy.
4. A patient is prescribed finasteride (Proscar) for benign prostatic hyperplasia (BPH). What outcome should the nurse expect to observe?
- A. Decreased urinary frequency and urgency
- B. Increased prostate size
- C. Increased blood pressure
- D. Increased risk of kidney stones
Correct answer: A
Rationale: The correct answer is A: Decreased urinary frequency and urgency. Finasteride is expected to decrease urinary frequency and urgency in patients with BPH by reducing prostate size. It works by inhibiting the enzyme that converts testosterone to dihydrotestosterone, which helps shrink the prostate gland. Choices B, C, and D are incorrect. Finasteride does not increase prostate size, blood pressure, or the risk of kidney stones.
5. In Guillain-Barre syndrome, what pathophysiologic process underlies the deficits that accompany the degeneration of myelin in the peripheral nervous system (PNS)?
- A. The destruction of myelin results in a reduction in Schwann cell production in the client's PNS.
- B. The lack of myelin surrounding nerve cells compromises the axonal transport system.
- C. Without remyelination, the axon will eventually die.
- D. A deficit of myelin makes the client more susceptible to infection by potential pathogens.
Correct answer: C
Rationale: In Guillain-Barre syndrome, the destruction of myelin leads to axonal damage. If remyelination does not occur, the axon will eventually degenerate and die, impacting nerve function. Choice A is incorrect because the destruction of myelin does not affect Schwann cell production. Choice B is incorrect as the lack of myelin directly affects the conduction of nerve impulses, not the axonal transport system. Choice D is incorrect as a deficit of myelin does not predispose the client to infections by potential pathogens.
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