ATI RN
ATI Pathophysiology Exam 2
1. Which of the following describes the etiology of a cerebrovascular accident (CVA)?
- A. A blow to the head from a hard object
- B. Lack of blood flow to part of the brain
- C. Excessive exercise, such as running
- D. A ruptured artery in the heart
Correct answer: B
Rationale: The correct answer is B. A cerebrovascular accident (CVA), or stroke, is often caused by a lack of blood flow to part of the brain. This leads to damage in the brain tissue due to the deprived oxygen and nutrients. Choices A, C, and D are incorrect. A blow to the head from a hard object can cause a traumatic brain injury but is not the etiology of a CVA. Excessive exercise like running does not typically lead to a stroke. A ruptured artery in the heart may result in a heart attack, not a cerebrovascular accident.
2. What is a common trigger for acute bronchospasm in asthma?
- A. Infection
- B. Allergic reaction
- C. Excessive exercise
- D. High altitude
Correct answer: B
Rationale: An allergic reaction is a common trigger for acute bronchospasm in asthma patients. When individuals with asthma come in contact with allergens like pollen, dust mites, or pet dander, it can lead to an allergic reaction that triggers bronchospasm. Infections, excessive exercise, and high altitudes can exacerbate asthma symptoms, but they are not the most common trigger for acute bronchospasm in asthma patients.
3. Which of the following women is at highest risk for the development of endometrial cancer?
- A. A 50-year-old postmenopausal woman with a history of high-risk human papillomavirus
- B. A 45-year-old woman who is obese and has a menstrual pattern consisting of periods of amenorrhea and infrequent periods
- C. A 40-year-old woman who is overweight and has hypertension
- D. A 55-year-old woman who smokes
Correct answer: B
Rationale: The correct answer is a 45-year-old woman who is obese and has a menstrual pattern consisting of periods of amenorrhea and infrequent periods. Obesity and prolonged exposure to estrogen unopposed by progesterone due to infrequent ovulation are significant risk factors for endometrial cancer. Choices A, C, and D do not directly correlate with the increased risk of endometrial cancer. Postmenopausal status alone (Choice A), overweight with hypertension (Choice C), and smoking (Choice D) are not the primary risk factors for endometrial cancer.
4. Which of the following clinical findings in a 51-year-old woman is consistent with Graves disease?
- A. Thin hair, exophthalmos, hyperreflexia, and pretibial edema.
- B. Thin hair, exophthalmos, weight gain, and constipation.
- C. Thick hair, bradycardia, weight loss, and dry skin.
- D. Thick hair, bradycardia, weight gain, and constipation.
Correct answer: A
Rationale: The clinical findings of thin hair, exophthalmos (bulging eyes), hyperreflexia, and pretibial edema are classic manifestations of Graves disease, an autoimmune condition that results in hyperthyroidism. Choice B is incorrect because weight gain and constipation are more indicative of hypothyroidism, not hyperthyroidism seen in Graves disease. Choice C is incorrect as the symptoms described are more characteristic of hypothyroidism, not hyperthyroidism. Choice D is also incorrect as the symptoms listed are not consistent with Graves disease but rather suggest hypothyroidism.
5. An imbalance of which of the following hormones could lead to increased calcium levels in the blood?
- A. Parathyroid hormone
- B. Antidiuretic hormone
- C. Calcitonin
- D. Melatonin
Correct answer: A
Rationale: The correct answer is Parathyroid hormone (Choice A). Parathyroid hormone plays a key role in regulating calcium levels in the blood. When there is an imbalance in parathyroid hormone secretion, it can lead to increased calcium levels in the blood. Antidiuretic hormone (Choice B) is involved in regulating water balance, not calcium levels. Calcitonin (Choice C) helps lower blood calcium levels and is unlikely to cause an increase. Melatonin (Choice D) regulates sleep-wake cycles and does not have a direct effect on calcium levels in the blood.
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