A nurse is providing dietary teaching to a patient with ulcerative colitis. Which of the following instructions should the nurse include?
Include high-fat foods to maintain weight
Eat three large meals a day to ensure adequate nutrition
Increase intake of dairy products to boost calcium levels.
Consume a low-fiber diet to minimize bowel irritation
The Correct Answer is D
A. Include high-fat foods to maintain weight. High-fat foods can worsen symptoms in ulcerative colitis by increasing bowel irritation and causing malabsorption. A balanced diet that is low in fat is usually recommended.
B. Eat three large meals a day to ensure adequate nutrition. Large meals can increase digestive workload and exacerbate symptoms. Smaller, more frequent meals are generally better tolerated.
C. Increase intake of dairy products to boost calcium levels. Many patients with ulcerative colitis are lactose intolerant or sensitive to dairy, which can worsen symptoms. Calcium can be obtained from other sources if needed.
D. Consume a low-fiber diet to minimize bowel irritation. A low-fiber diet can reduce mechanical irritation in the bowel, which is beneficial during flare-ups of ulcerative colitis.
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Explanation
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Correct Answer is B
Explanation
A. The glomerular filtration rate decreases because there is a reduction of blood flow to the kidneys. Reduced blood flow to the kidneys, or renal hypoperfusion, decreases the glomerular filtration rate (GFR) because less blood is being filtered through the kidneys. This can occur in conditions such as shock, severe dehydration, or heart failure, but it is not the primary mechanism in acute tubular necrosis (ATN).
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C. The glomerular filtration rate decreases because inflammatory cells invade the already damaged kidneys. While inflammation may be present, it is not the primary cause of decreased GFR in acute tubular necrosis; reduced blood flow and tubular cell injury are more direct causes.
D. The glomerular filtration rate decreases because there is obstruction leading to the filtration system backing up and eventually shutting the kidneys down. Obstruction is not typically a characteristic of acute tubular necrosis; ATN is usually caused by ischemic or toxic injury, not physical obstruction.