Nokea
Prolonged exposure to high concentrations of supplemental oxygen over several days can cause which pathophysiological effect?
- A. Reduced cardiac output
- B. Disrupted surfactant production
- C. Hyperactivity of alveoli
- D. Increased oxygen carrying capacity
Correct Answer: B
Rationale: Corrected Rationale: Prolonged exposure to high oxygen concentrations can disrupt the production of surfactant in the lungs, leading to atelectasis and other lung complications. Surfactant is essential for maintaining lung compliance and preventing alveolar collapse. Reduced cardiac output (Choice A) is not directly associated with prolonged oxygen exposure. Hyperactivity of alveoli (Choice C) is not a recognized consequence of high oxygen levels. Increased oxygen carrying capacity (Choice D) is not a pathophysiological effect of prolonged high oxygen exposure.
You may also like to solve these questions
A client with a urinary tract infection (UTI) is prescribed ciprofloxacin. What client teaching is essential?
- A. Increase fluid intake to prevent crystalluria.
- B. Take the medication with meals to prevent GI upset.
- C. Avoid sunlight exposure while taking the medication.
- D. Report any changes in the color of urine.
Correct Answer: A
Rationale: The correct answer is to increase fluid intake to prevent crystalluria, a potential side effect of ciprofloxacin. Crystalluria is the formation of crystals in the urine, which can be reduced by maintaining adequate hydration. Choice B is incorrect because ciprofloxacin can be taken with or without food. Choice C is incorrect as avoiding sunlight exposure is more relevant for medications that cause photosensitivity, not typically a concern with ciprofloxacin. Choice D is less essential than choice A because while reporting changes in urine color is important, preventing crystalluria through adequate fluid intake is a higher priority.
A client with Alzheimer's disease is becoming increasingly confused. What action should the nurse take first?
- A. Reorient the client to time and place.
- B. Monitor the client's vital signs.
- C. Provide the client with calming activities to reduce confusion.
- D. Consult with the healthcare provider about adjusting the client's medication.
Correct Answer: B
Rationale: The correct action for the nurse to take first when a client with Alzheimer's disease is becoming increasingly confused is to monitor the client's vital signs (Choice B). Increased confusion in Alzheimer's disease patients may indicate underlying issues like infection, dehydration, or medication side effects. Monitoring vital signs is crucial in identifying any potential causes of the confusion. Choices A, C, and D are not the priority in this situation. Reorienting the client to time and place (Choice A) can be helpful but is not the first priority. Providing calming activities (Choice C) and consulting with the healthcare provider about medication adjustments (Choice D) may be necessary but should come after assessing the client's vital signs to rule out immediate physical causes of confusion.
What pathophysiological events occur sequentially in the development of atherosclerosis?
- A. Foam cells release growth factors.
- B. Smooth muscle grows over fatty streaks creating fibrous plaques.
- C. Macrophages consume low-density lipoprotein (LDL) and create foam cells.
- D. Arterial endothelium injury causes inflammation.
Correct Answer: D
Rationale: The correct sequence of pathophysiological events in the development of atherosclerosis starts with arterial endothelium injury causing inflammation. This inflammation triggers the formation of foam cells by macrophages consuming low-density lipoprotein (LDL). Subsequently, smooth muscle grows over fatty streaks, creating fibrous plaques. Therefore, option D is the correct answer. Choices A, B, and C are incorrect because they do not reflect the accurate chronological order of events in the pathogenesis of atherosclerosis.
A client with heart failure is receiving furosemide. What assessment finding indicates the medication is effective?
- A. Increased urine output and weight loss.
- B. Increased heart rate and blood pressure.
- C. Decreased edema and improved peripheral pulses.
- D. Decreased shortness of breath and clear lung sounds.
Correct Answer: C
Rationale: The correct answer is C: 'Decreased edema and improved peripheral pulses.' In a client with heart failure, furosemide is a diuretic that helps reduce fluid overload. Therefore, a decrease in edema (swelling due to fluid retention) and improved peripheral pulses (indicating better circulation) are signs that the medication is effective. Choices A, B, and D are incorrect. Increased urine output and weight loss (Choice A) may indicate the diuretic effect of furosemide but do not specifically reflect its effectiveness in heart failure. Increased heart rate and blood pressure (Choice B) are not desired effects of furosemide and may suggest adverse reactions. Decreased shortness of breath and clear lung sounds (Choice D) are related to improved respiratory status and may not directly reflect the effectiveness of furosemide in addressing fluid overload.
A nurse is caring for a 73-year-old male client with Alzheimer's disease. Which action should the nurse take to enhance the client's nutritional intake?
- A. Encourage the client to eat large meals in one sitting.
- B. Offer the client frequent snacks of foods he enjoys.
- C. Provide the client with foods high in fiber to improve digestion.
- D. Discourage eating late at night to prevent weight gain.
Correct Answer: B
Rationale: Offering frequent snacks of foods the client enjoys is the most appropriate action to enhance the nutritional intake of a client with Alzheimer's disease. This approach helps to ensure that the client receives an adequate amount of nutrients throughout the day, especially when larger meals might be challenging for individuals with Alzheimer's. Encouraging large meals in one sitting (Choice A) may overwhelm the client and lead to decreased food intake. While foods high in fiber (Choice C) are beneficial for digestion, the primary focus should be on providing foods the client enjoys to increase intake. Discouraging eating late at night (Choice D) is not directly related to enhancing nutritional intake in this scenario.