ATI RN
ATI Pathophysiology Exam 3
1. Which of the following is a clinical manifestation of hyperthyroidism?
- A. Tachycardia
- B. Constipation
- C. Weight gain
- D. Fatigue
Correct answer: A
Rationale: The correct answer is A: Tachycardia. Tachycardia, which is an increased heart rate, is a classic clinical manifestation of hyperthyroidism. In hyperthyroidism, there is an excess production of thyroid hormones, leading to an increased metabolic rate. This increased metabolism can cause symptoms such as a rapid heart rate. Choices B, C, and D are incorrect because constipation, weight gain, and fatigue are more commonly associated with hypothyroidism, where there is a deficiency of thyroid hormones leading to a slower metabolic rate.
2. Which of the following is a common cause of secondary hypertension?
- A. Primary aldosteronism
- B. Essential hypertension
- C. White coat hypertension
- D. Prehypertension
Correct answer: A
Rationale: Primary aldosteronism is a common cause of secondary hypertension. In primary aldosteronism, there is an overproduction of aldosterone from the adrenal glands, leading to increased sodium retention and potassium excretion, ultimately resulting in high blood pressure. Essential hypertension (Choice B) is the most common type of hypertension, but it is considered primary hypertension, not secondary. White coat hypertension (Choice C) refers to elevated blood pressure readings in a clinical setting due to anxiety but not in daily life. Prehypertension (Choice D) is a condition where blood pressure levels are elevated but not high enough to be classified as hypertension.
3. Which information would indicate more teaching is needed regarding hypersensitivity reactions? Type _______ hypersensitivity reactions involve an antibody response.
- A. I
- B. II
- C. III
- D. IV
Correct answer: D
Rationale: The correct answer is D: Type IV hypersensitivity reactions involve cell-mediated immunity, not an antibody response. This question tests knowledge of hypersensitivity reactions and their classification. Type I hypersensitivity reactions involve IgE antibodies, Type II involves IgG or IgM antibodies, and Type III involves immune complex deposition. Type IV hypersensitivity reactions are delayed and involve T cells, not antibodies. Therefore, if a person believes that Type IV hypersensitivity reactions involve an antibody response, more teaching is required.
4. A patient is being administered chemotherapeutic agents for the treatment of cancer. Which of the following blood cells will be stimulated by the colony-stimulating factors in response to the effects of the chemotherapy?
- A. White blood cells
- B. Red blood cells
- C. Phagocytes
- D. Myocardial cells
Correct answer: A
Rationale: The correct answer is White blood cells. Colony-stimulating factors stimulate the production of white blood cells in response to the effects of chemotherapy, as it can lead to myelosuppression. Red blood cells are not directly stimulated by colony-stimulating factors. Phagocytes are a type of white blood cell involved in immune responses, but they are not specifically stimulated by colony-stimulating factors. Myocardial cells are cardiac muscle cells and are not directly involved in the response to chemotherapy-induced myelosuppression.
5. In a 70-year-old man with a history of chronic obstructive pulmonary disease (COPD) reporting increasing shortness of breath, wheezing, and cough, which finding would indicate a potential exacerbation of his COPD?
- A. Increased wheezing
- B. Decreased respiratory rate
- C. Improved exercise tolerance
- D. Decreased sputum production
Correct answer: A
Rationale: The correct answer is A: Increased wheezing. In COPD exacerbations, there is a worsening of symptoms such as increased wheezing due to airway inflammation and narrowing. Choices B, C, and D are incorrect. Decreased respiratory rate would not be expected in COPD exacerbation as it is usually a compensatory mechanism to maintain oxygenation. Improved exercise tolerance is not a typical finding in exacerbations but rather a sign of improvement. Decreased sputum production is also not indicative of exacerbation, as exacerbations are often associated with increased sputum production.
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