The client was admitted to the medical-surgical unit 24 hours ago with a diagnosis of an acute exacerbation of ulcerative colitis. What is the most appropriate intervention for the nurse to implement?

Ulcerative colitis is a chronic inflammatory bowel disease characterized by continuous mucosal inflammation of the colon, leading to symptoms such as diarrhea, abdominal cramping, rectal bleeding, and urgency. During an acute exacerbation, the intestinal lining is highly inflamed and sensitive, requiring bowel rest to reduce stimulation and allow healing. Nursing management focuses on reducing inflammation, maintaining fluid and electrolyte balance, and preventing further irritation of the colon. Dietary and activity modifications are important during the acute phase. A. Maintaining nothing by mouth (NPO) status is the most appropriate intervention during an acute exacerbation of Ulcerative colitis because it reduces bowel stimulation and allows the inflamed colon to rest. This decreases peristalsis, minimizes abdominal pain, and helps control severe symptoms such as diarrhea and bleeding. In moderate to severe flares, bowel rest is often necessary before gradually advancing diet. B. A low-residue diet is not appropriate during the acute phase of an exacerbation because it still requires intestinal activity and can irritate the inflamed bowel. While it may be used during remission or recovery phases of Ulcerative colitis, introducing food too early during a flare may worsen symptoms and increase stool frequency and discomfort. C. Administering antacids orally is not a priority intervention for ulcerative colitis because the primary issue is colonic inflammation, not gastric acid production. Antacids do not address the underlying inflammatory process or symptoms such as diarrhea and rectal bleeding seen in Ulcerative colitis. Treatment typically focuses on anti-inflammatory agents rather than acid suppression. D. Assessing vital signs daily is insufficient for a client with an acute exacerbation because close and frequent monitoring is required to detect complications such as dehydration, bleeding, or infection. In Ulcerative colitis, vital signs should be assessed more frequently than once daily to identify early signs of deterioration, especially tachycardia or hypotension from fluid loss.