Acute colonic pseudo-obstruction: a possible role for the colocolonic reflex

Area of Science:

• Gastroenterology
• Autonomic Neuroscience

Background:

• Acute colonic pseudo-obstruction is a clinical condition mimicking bowel obstruction without a mechanical blockage.
• The underlying pathophysiology, particularly the role of the autonomic nervous system, remains incompletely understood since its initial description.

Observation:

• Three distinct cases of acute colonic pseudo-obstruction were analyzed: classic Ogilvie's syndrome (malignant invasion), clonidine administration, and post-epidural anesthesia herniorrhaphy.
• Classic Ogilvie's syndrome is historically linked to malignant invasion of prevertebral ganglia.

Findings:

• The colocolonic reflex, previously observed in animal models, is proposed as a potential mechanism contributing to acute colonic pseudo-obstruction.
• This reflex may play a role in pseudo-obstruction irrespective of the initial trigger, including malignant invasion, drug effects, or surgical anesthesia.

Implications:

• Differentiating true Ogilvie's syndrome from other causes of acute colonic pseudo-obstruction is crucial for appropriate patient management.
• Understanding the colocolonic reflex could lead to novel therapeutic strategies for managing acute colonic pseudo-obstruction.