Which statement correctly identifies the two types of bowel obstruction?

Which statement correctly identifies the two types of bowel obstruction?

• A. Dynamic bowel obstruction and Adynamic bowel obstruction
• B. Dynamic obstruction and Mechanical obstruction
• C. Mechanical and Functional
• D. Obstructive and Non-obstructive

Answer: (A)

The main idea is to think about bowel obstructions in terms of how the bowel is moving. A dynamic obstruction refers to an obstruction where peristalsis is still actively working against a blockage or barrier, so there is ongoing movement attempts and often crampy pain as contents push against the obstruction. An adynamic obstruction, also called paralytic ileus, is when peristalsis is reduced or absent, so there’s little to no movement despite there being some blockage risk, leading to diffuse distension and lack of progressive movement. This pairing—dynamic and adynamic—highlights the two ends of the spectrum: active motility with a blockage versus impaired motility with stagnation. The other options mix terms that don’t consistently reflect this motility-based split (for example, pairing dynamic with mechanical or using a broad mechanical/functional split that doesn’t emphasize the motility status).

The main idea is to think about bowel obstructions in terms of how the bowel is moving. A dynamic obstruction refers to an obstruction where peristalsis is still actively working against a blockage or barrier, so there is ongoing movement attempts and often crampy pain as contents push against the obstruction. An adynamic obstruction, also called paralytic ileus, is when peristalsis is reduced or absent, so there’s little to no movement despite there being some blockage risk, leading to diffuse distension and lack of progressive movement.

This pairing—dynamic and adynamic—highlights the two ends of the spectrum: active motility with a blockage versus impaired motility with stagnation. The other options mix terms that don’t consistently reflect this motility-based split (for example, pairing dynamic with mechanical or using a broad mechanical/functional split that doesn’t emphasize the motility status).