What is the primary difference between paralytic ileus and Ogilvie syndrome?

• A. Paralytic ileus involves only the colon
• B. Ogilvie syndrome involves the small intestine only
• C. Paralytic ileus involves both the small intestine and colon
• D. There is no difference between the two

Answer: (C)

The primary difference between paralytic ileus and Ogilvie syndrome lies in the areas of the gastrointestinal tract they affect. Paralytic ileus is a condition characterized by a general failure of peristalsis in the gastrointestinal tract, which can involve both the small intestine and the colon. It is often the result of surgery, inflammation, medications, or other factors that inhibit motility throughout the digestive system.

In contrast, Ogilvie syndrome, also known as acute colonic pseudo-obstruction, specifically affects the colon and presents with symptoms similar to intestinal obstruction without any mechanical blockage. The colonic motility is severely impaired, leading to colonic dilation, but the small intestine remains functional.

Recognizing this distinction is crucial for diagnosis and management. In paralytic ileus, the treatment typically focuses on the underlying cause and supportive care, while in Ogilvie syndrome, interventions may include decompression or medications to stimulate colonic motility. Understanding that paralytic ileus can affect both parts of the gastrointestinal tract is key to identifying it accurately and distinguishing it from Ogilvie syndrome.