ATI RN
Pathophysiology Practice Questions
1. A patient presents with a sudden onset of severe chest pain radiating to his back. His blood pressure is significantly higher in the right arm than in the left arm. Which of the following conditions is most likely?
- A. Acute myocardial infarction
- B. Pulmonary embolism
- C. Aortic dissection
- D. Pericarditis
Correct answer: C
Rationale: The correct answer is C, aortic dissection. Aortic dissection is characterized by sudden, severe chest pain that can radiate to the back. The discrepancy in blood pressure between the arms (higher in the right arm) is known as a 'pulse deficit' and is a classic finding in aortic dissection. This condition involves a tear in the inner layer of the aorta, leading to the abnormal flow of blood within the aortic wall. Acute myocardial infarction (choice A) presents with chest pain but typically does not cause discrepancies in blood pressure between arms. Pulmonary embolism (choice B) usually presents with chest pain and difficulty breathing but does not cause unequal blood pressures in the arms. Pericarditis (choice D) can cause chest pain exacerbated by breathing or lying down, but it does not typically lead to differences in blood pressure between arms.
2. A 70-year-old client presents with weakness and sensory loss in the right hand and foot. The client also exhibits speech difficulties. Which condition is the client most likely experiencing?
- A. Transient ischemic attack (TIA)
- B. Brain tumor
- C. Cerebral infarction
- D. Multiple sclerosis
Correct answer: C
Rationale: The correct answer is C: Cerebral infarction (stroke). In this case, the client's symptoms of weakness and sensory loss in the right hand and foot, along with speech difficulties, are indicative of a stroke. These symptoms are commonly seen in individuals experiencing a cerebral infarction, where a blockage in blood flow to the brain leads to neurological deficits. Choices A, B, and D are less likely as transient ischemic attacks (TIAs) typically have temporary symptoms with no permanent damage, brain tumors may present with a different set of symptoms depending on their location, and multiple sclerosis usually presents with a relapsing-remitting pattern of neurological symptoms rather than sudden onset unilateral deficits.
3. What causes atherosclerotic plaques to form in the body?
- A. Poor dietary habits
- B. Administration of statin medication
- C. Interruption of blood flow to the brain
- D. Injury to the endothelium of the coronary arteries
Correct answer: D
Rationale: Atherosclerotic plaques form in the body due to injury to the endothelium of the coronary arteries. When the endothelium is damaged, it triggers an inflammatory response that leads to the accumulation of fats, cholesterol, and other substances, forming plaques. These plaques can narrow the arteries, reducing blood flow and potentially leading to serious complications like heart attacks or strokes. Poor dietary habits (choice A) can contribute to the development of atherosclerosis by promoting the buildup of plaque-forming substances in the blood, but the direct cause is the injury to the endothelium. Administration of statin medication (choice B) is actually a treatment for high cholesterol and aims to reduce the risk of plaque formation. Interruption of blood flow to the brain (choice C) is more related to conditions like ischemic stroke rather than the primary cause of atherosclerotic plaque formation.
4. When educating a patient starting on oral contraceptives, what should the nurse include in the teaching plan regarding potential side effects?
- A. Weight gain, mood changes, and nausea
- B. Increased appetite, insomnia, and fatigue
- C. Breast tenderness, headaches, and dizziness
- D. Fatigue, hair loss, and joint pain
Correct answer: A
Rationale: The correct answer is A: Weight gain, mood changes, and nausea are common side effects of oral contraceptives. Weight gain may occur due to fluid retention or changes in metabolism. Mood changes can be caused by hormonal fluctuations. Nausea is a common side effect that usually improves after a few months of use. Choices B, C, and D are incorrect because they do not reflect common side effects associated with oral contraceptives. Increased appetite, insomnia, breast tenderness, headaches, dizziness, fatigue, hair loss, and joint pain are not typically reported side effects of oral contraceptives.
5. A patient is starting on medroxyprogesterone acetate (Provera) for endometriosis. What should the nurse include in the patient teaching?
- A. Take the medication with food to prevent nausea.
- B. Take the medication at the same time each day to maintain consistent hormone levels.
- C. Avoid prolonged sun exposure while taking this medication.
- D. Discontinue the medication if side effects occur.
Correct answer: B
Rationale: The correct answer is B. Patients starting on medroxyprogesterone acetate (Provera) for endometriosis should be instructed to take the medication at the same time each day to maintain consistent hormone levels and effectiveness. Choice A is incorrect because medroxyprogesterone acetate can be taken with or without food. Choice C is unrelated to the medication and not a specific concern with its use. Choice D is incorrect as patients should not discontinue the medication without consulting their healthcare provider, even if side effects occur.
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