Why is Crohn disease more likely to cause intestinal obstruction than ulcerative colitis?

Crohn disease is located in the small intestine

Crohn disease is exacerbated by certain foods, such as spicy foods

Crohn disease causes granulomas to form in the submucosal layers

Crohn disease causes abdominal pain and watery diarrhea

Answer and Explanation

The Correct Answer is C

A. While Crohn disease can affect any part of the gastrointestinal tract, it often affects the small intestine, particularly the ileum. However, the location alone does not explain the increased risk of obstruction.

B. Certain foods, such as spicy foods, may exacerbate symptoms of Crohn disease, but this is not the primary reason it causes intestinal obstruction.

C. Crohn disease causes inflammation that can lead to the formation of granulomas, particularly in the submucosal layers. These granulomas contribute to fibrosis and narrowing of the bowel, which can lead to intestinal obstruction. This is a key feature of Crohn disease that makes it more likely to cause obstruction compared to ulcerative colitis.

D. Abdominal pain and watery diarrhea are common symptoms of both Crohn disease and ulcerative colitis, but they are not directly related to the increased risk of obstruction in Crohn disease.

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Correct Answer is C

Explanation

A. Cystine stones are rare and occur due to a genetic disorder called cystinuria. They are not the most common type of renal calculi.

B. Uric acid stones are also relatively common, especially in individuals with gout or those with high levels of uric acid in the urine. However, calcium oxalate is more common.

C. Calcium oxalate is the most common type of renal calculi, accounting for about 70-80% of kidney stones. These stones form when calcium combines with oxalate in the urine.

D. Struvite stones are associated with urinary tract infections caused by urease-producing bacteria. They are less common than calcium oxalate stones.

A. Dehydration B. Sedentary lifestyle C. Drinking 32 ounces of milk per day D. Running 5 miles

Correct Answer is A

Explanation

A. Dehydration is a major risk factor for renal calculi (kidney stones). When there is insufficient fluid intake, urine becomes concentrated, allowing substances like calcium, oxalate, and uric acid to crystallize and form stones.

B. A sedentary lifestyle can contribute to weight gain and other health issues, but it is not directly linked to the formation of kidney stones.

C. Drinking 32 ounces of milk per day is not a significant risk factor for kidney stones. In fact, moderate calcium intake from food can help prevent certain types of stones. Excessive calcium intake from supplements, however, can increase the risk.

D. Running 5 miles does not directly increase the risk of kidney stones. Regular physical activity, in general, helps promote overall health and hydration, which can reduce the risk of stone formation.

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Why is Crohn disease more likely to cause intestinal obstruction than ulcerative colitis?

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Naxlex Comprehensive Predictor Exams

The most common component of renal calculi is:

Correct Answer is C

Explanation

Which of the following increases the risk for renal calculi?

Correct Answer is A

Explanation

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