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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Bacteria are not typically detected by a guaiac stool test. Bacterial infections may be diagnosed with a stool culture or other microbiological tests.
B. The guaiac stool test is used to detect hidden (occult) blood in the stool, which can be a sign of gastrointestinal bleeding, such as from ulcers, polyps, or cancer.
C. Steatorrhea refers to the presence of excess fat in the stool, which can be detected by other tests, such as fecal fat analysis, not a guaiac test.
D. Parasites are usually detected through stool microscopy or stool ova and parasite (O&P) tests, not a guaiac test.
Correct Answer is A
Explanation
A. Arterial blood gas (ABG) analysis is the most accurate method for distinguishing between hypoxemia (low oxygen levels in the blood) and hypercapnia (elevated carbon dioxide levels). ABG testing measures both the partial pressure of oxygen (PaO2) and carbon dioxide (PaCO2), providing a clear distinction between the two conditions.
B. While observing for signs and symptoms is useful, it is not specific enough to distinguish between hypoxemia and hypercapnia, as both conditions may present with similar symptoms like shortness of breath or confusion.
C. Measuring oxygen saturation with a pulse oximeter can detect hypoxemia but does not provide information about carbon dioxide levels, so it cannot distinguish between hypoxemia and hypercapnia.
D. Pulmonary function testing assesses lung volumes and airflow but does not directly measure oxygen or carbon dioxide levels, making it less effective for distinguishing between hypoxemia and hypercapnia.
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