ATI RN
Final Exam Pathophysiology
1. A female patient is concerned about the side effects of oral contraceptives. What should the nurse explain as a common side effect?
- A. Increased energy levels
- B. Decreased libido
- C. Weight gain
- D. Hair loss
Correct answer: C
Rationale: The correct answer is C: Weight gain. Weight gain is a common side effect of oral contraceptives due to hormonal changes. It is essential for healthcare providers to inform patients about this possibility to manage expectations. Choice A, increased energy levels, is not a common side effect of oral contraceptives. Choice B, decreased libido, can be a side effect for some individuals but is not as common as weight gain. Choice D, hair loss, is not typically associated with oral contraceptives. Therefore, it is important for the nurse to address the patient's concerns by discussing the more prevalent side effects like weight gain.
2. When reviewing the purpose/action of neurotransmitters as they interact with different receptors, the nursing instructor gives an example using acetylcholine. When acetylcholine is released at the sinoatrial node in the right atrium of the heart, it is:
- A. positively charged.
- B. inhibitory.
- C. overstimulated.
- D. dormant.
Correct answer: B
Rationale: Acetylcholine acts as an inhibitory neurotransmitter at the sinoatrial node. It slows down the heart rate by decreasing the firing rate of the sinoatrial node, which serves as the heart's natural pacemaker. Neurotransmitters do not have a charge, so choice A is incorrect. Choice C is wrong as overstimulation is not a characteristic of acetylcholine at the sinoatrial node. Choice D is also incorrect because acetylcholine actively influences heart rate regulation when released at the sinoatrial node.
3. 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.
4. 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.
5. 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.
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