ATI RN
WGU Pathophysiology Final Exam
1. A 9-year-old girl has a diffuse collection of symptoms that are indicative of deficits in endocrine and autonomic nervous system control. She also suffers from persistent fluid and electrolyte imbalances. On which aspect of the nervous system listed below would her health care providers focus their diagnostic efforts?
- A. The thalamus
- B. The pituitary
- C. The hypothalamus
- D. The midbrain
Correct answer: C
Rationale: The correct answer is C: The hypothalamus. The hypothalamus plays a central role in regulating endocrine and autonomic functions, including fluid and electrolyte balance. In this case, the girl's symptoms of deficits in endocrine and autonomic nervous system control, along with fluid and electrolyte imbalances, point towards dysfunction in the hypothalamus. Choices A, B, and D are incorrect because the thalamus is mainly involved in sensory relay, the pituitary gland regulates various hormones but is controlled by the hypothalamus, and the midbrain is responsible for motor control and arousal, not endocrine or autonomic functions.
2. In addition to matching ABO antigens, a blood transfusion must also be matched for:
- A. HLA type
- B. Rh antigen
- C. Immunoglobulins
- D. Platelet compatibility
Correct answer: B
Rationale: The correct answer is B: Rh antigen. In addition to ABO antigens, Rh antigen must also be matched for a blood transfusion. Rh antigen compatibility is crucial to prevent adverse reactions. Choice A, HLA type, is not directly related to blood transfusions but plays a role in organ transplantation. Choice C, Immunoglobulins, are not typically matched for blood transfusions. Choice D, Platelet compatibility, while important in specific cases, is not a standard requirement for all blood transfusions.
3. A 30-year-old woman presents with joint pain, a malar rash, and photosensitivity. Which of the following is the most likely diagnosis?
- A. Rheumatoid arthritis
- B. Systemic lupus erythematosus
- C. Psoriatic arthritis
- D. Dermatomyositis
Correct answer: B
Rationale: The correct answer is B: Systemic lupus erythematosus. Joint pain, a malar rash, and photosensitivity are classic symptoms of systemic lupus erythematosus. Choice A, Rheumatoid arthritis, is incorrect as it typically presents with symmetric joint involvement and morning stiffness. Psoriatic arthritis (Choice C) is characterized by joint pain associated with psoriasis, which is not described in the case. Dermatomyositis (Choice D) presents with muscle weakness, skin rash, and elevated muscle enzymes, different from the symptoms presented in the case.
4. A male patient is receiving androgen therapy for the treatment of hypogonadism. What adverse effect should the nurse monitor for during this treatment?
- A. Liver dysfunction
- B. Kidney dysfunction
- C. Heart failure
- D. Pulmonary embolism
Correct answer: A
Rationale: The correct adverse effect to monitor for during androgen therapy for hypogonadism is liver dysfunction. Androgen therapy can lead to hepatotoxicity, so monitoring liver function tests is crucial during treatment. Kidney dysfunction (Choice B), heart failure (Choice C), and pulmonary embolism (Choice D) are not commonly associated with androgen therapy and are less likely adverse effects compared to liver dysfunction.
5. Which term should the nurse use to document a situation in which cells increase in size and function?
- A. Atrophy
- B. Hypertrophy
- C. Metaplasia
- D. Hyperplasia
Correct answer: B
Rationale: Hypertrophy is the correct term used to describe the situation in which cells increase in size and function. Atrophy (Choice A) is the opposite, indicating a decrease in cell size. Metaplasia (Choice C) refers to the reversible replacement of one mature cell type by another. Hyperplasia (Choice D) involves an increase in the number of cells, not just an increase in size and function as in hypertrophy.
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