ATI RN
ATI Pathophysiology
1. The parents of a 4-year-old girl have sought care because their daughter has admitted to chewing and swallowing imported toy figurines that have been determined to be made of lead. Which of the following blood tests should the care team prioritize?
- A. White blood cell levels with differential
- B. Red blood cell levels and morphology
- C. Urea and creatinine levels
- D. Liver function panel
Correct answer: B
Rationale: The correct answer is B: Red blood cell levels and morphology. Lead poisoning primarily affects red blood cells, causing anemia. Therefore, the priority test would be to assess red blood cell levels and morphology. Choice A (White blood cell levels with differential) is incorrect as lead poisoning does not primarily affect white blood cells. Choice C (Urea and creatinine levels) is unrelated to lead poisoning and not a priority in this scenario. Choice D (Liver function panel) is also not the priority as lead poisoning's primary impact is on the red blood cells, not the liver.
2. What property is found in clients with metastatic cancer?
- A. Tumors that are well encapsulated
- B. Tumors with slow, stable growth
- C. Cells that are genetically stable
- D. Cells invading local tissue and overrunning neighboring cells
Correct answer: D
Rationale: Metastatic cancer is characterized by cells that invade local tissue and overrun neighboring cells. Therefore, the correct answer is D. Choices A, B, and C are incorrect because metastatic cancer is associated with aggressive behavior where cells invade and spread to other parts of the body, rather than being well encapsulated, growing slowly, or being genetically stable.
3. A patient who was frequently homeless over the past several years has begun a drug regimen consisting solely of isoniazid (INH). What is this patient's most likely diagnosis?
- A. Active tuberculosis
- B. Latent tuberculosis
- C. Mycobacterium avium complex
- D. Human immunodeficiency virus
Correct answer: A
Rationale: The correct answer is A: Active tuberculosis. Given the patient's history of homelessness and initiation of isoniazid (INH) treatment, the most likely diagnosis is active tuberculosis. Isoniazid is a first-line medication used in the treatment of active tuberculosis. Latent tuberculosis (choice B) would not typically necessitate treatment with isoniazid alone. Mycobacterium avium complex (choice C) is not typically treated with isoniazid alone. Human immunodeficiency virus (choice D) is a risk factor for developing tuberculosis but is not the primary diagnosis in this patient scenario.
4. A 17-year-old woman has come to the clinic requesting emergency contraception after having unprotected sex 24 hours ago. What medication is the clinician most likely to prescribe?
- A. Levonorgestrel (Plan B)
- B. Mifepristone (RU-486)
- C. Ulipristal acetate (ella)
- D. Estradiol (Estrace)
Correct answer: A
Rationale: The correct answer is A: Levonorgestrel (Plan B). Levonorgestrel is the most commonly prescribed medication for emergency contraception within 72 hours of unprotected intercourse. It is effective when taken within 72 hours after intercourse, with better efficacy the sooner it is taken. Choice B, Mifepristone (RU-486), is not indicated for emergency contraception but is used for medical abortion. Choice C, Ulipristal acetate (ella), is another option for emergency contraception that is effective up to 120 hours after unprotected intercourse. Choice D, Estradiol (Estrace), is not used for emergency contraception.
5. When treating a patient for a fungal infection with IV amphotericin B, what should the nurse consistently monitor the patient's levels of to prevent drug discomfort?
- A. sodium
- B. hemoglobin
- C. calcium
- D. leukocytes
Correct answer: C
Rationale: When a patient is being treated with IV amphotericin B for a fungal infection, it is crucial to monitor the patient's calcium levels consistently. IV amphotericin B can cause hypokalemia, hypomagnesemia, and most notably, hypocalcemia. Monitoring calcium levels helps prevent drug-related discomfort and adverse effects. Sodium (Choice A), hemoglobin (Choice B), and leukocytes (Choice D) are not the primary parameters to monitor specifically for drug discomfort related to amphotericin B. Therefore, they are incorrect choices.
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