ATI RN
Pathophysiology Practice Questions
1. A 45-year-old woman presents with fatigue, weight gain, and cold intolerance. Her thyroid function tests reveal low T3 and T4 levels and elevated TSH levels. Which of the following is the most likely diagnosis?
- A. Hyperthyroidism
- B. Hypothyroidism
- C. Euthyroid sick syndrome
- D. Subclinical hyperthyroidism
Correct answer: B
Rationale: The scenario describes a 45-year-old woman with fatigue, weight gain, cold intolerance, low T3 and T4 levels, and elevated TSH levels, which are indicative of hypothyroidism. In hypothyroidism, there is decreased production of thyroid hormones (T3 and T4) leading to elevated TSH levels as the pituitary gland tries to stimulate the thyroid gland to produce more hormones. Therefore, the correct answer is hypothyroidism (Choice B). Choice A, Hyperthyroidism, is incorrect as the patient's symptoms and thyroid function tests point towards decreased thyroid hormone levels, which is characteristic of hypothyroidism, not hyperthyroidism. Choice C, Euthyroid sick syndrome, is incorrect because this condition typically presents with normal to low T3 and T4 levels in the setting of non-thyroid illness, unlike the elevated TSH levels observed in this case. Choice D, Subclinical hyperthyroidism, is also incorrect as the patient has low T3 and T4 levels, which is not consistent with hyperthyroidism, whether clinical or subclinical.
2. A 22-year-old woman began using oral contraceptives several months ago and has presented for an appointment to discuss recent worrisome changes in her health status. Which of the following changes in the woman's health may the nurse potentially attribute to the use of oral contraceptives?
- A. Fatigue
- B. Frequent high blood pressure readings
- C. Frequent headaches without aura
- D. Nausea and vomiting
Correct answer: A
Rationale: The correct answer is A: Fatigue. Oral contraceptives can sometimes cause fatigue as a side effect. Frequent high blood pressure readings and frequent headaches without aura are less likely to be directly related to the use of oral contraceptives. Nausea and vomiting are common side effects of oral contraceptives but are not the changes typically associated with liver function affecting hormone metabolism as in the case of hepatitis C infection.
3. A nurse is providing care for a 44-year-old male client who is admitted with a diagnosis of fever of unknown origin (FUO). Which characteristic of the client's history is most likely to have a bearing on his current diagnosis?
- A. The client is a smoker.
- B. The client has a history of IV drug use.
- C. The client was treated for an STD 2 years ago.
- D. The client has a family history of cardiac disease.
Correct answer: B
Rationale: A history of IV drug use is significant in cases of fever of unknown origin, as it increases the risk of infections like endocarditis, which can present with persistent fever. Smoking (Choice A) is not directly linked to FUO. While a history of STD treatment (Choice C) may be relevant, it is less likely to be associated with FUO compared to IV drug use. Family history of cardiac disease (Choice D) is not typically a primary factor in the diagnosis of FUO.
4. A newborn is diagnosed with congenital intrinsic factor deficiency. Which of the following types of anemia will the nurse see documented on the chart?
- A. Iron deficiency anemia
- B. Sideroblastic anemia
- C. Pernicious anemia
- D. Hemolytic anemia
Correct answer: C
Rationale: The correct answer is C, Pernicious anemia. Pernicious anemia is associated with a congenital intrinsic factor deficiency, leading to the impaired absorption of vitamin B12. Iron deficiency anemia (Choice A) is not directly related to intrinsic factor deficiency. Sideroblastic anemia (Choice B) is characterized by defective iron uptake by developing erythrocytes and is not linked to intrinsic factor deficiency. Hemolytic anemia (Choice D) involves the premature destruction of red blood cells and is not specifically associated with intrinsic factor deficiency.
5. In a male patient with benign prostatic hyperplasia (BPH) prescribed tamsulosin (Flomax), what is the expected therapeutic effect of this medication?
- A. Decreased urinary frequency and urgency
- B. Increased urinary output
- C. Decreased blood pressure
- D. Increased hair growth
Correct answer: A
Rationale: The correct answer is A: Decreased urinary frequency and urgency. Tamsulosin is prescribed for patients with BPH to relax the muscles in the prostate and bladder neck. This relaxation helps in relieving the symptoms of BPH, such as decreased urinary flow, frequent urination, and urgency. Choice B is incorrect because tamsulosin does not increase urinary output but rather improves the flow of urine by relaxing the muscles. Choice C is incorrect as tamsulosin is not primarily used for reducing blood pressure. Choice D is also incorrect as tamsulosin does not promote increased hair growth.
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