Idiopathic Slow Transit Constipation: Pathophysiology, Diagnosis, and Management

Area of Science:

• Gastroenterology
• Colorectal Surgery
• Physiology

Background:

• Slow transit constipation (STC) affects 2-4% of the population, causing significant psychosocial stress and high healthcare costs.
• STC is characterized by colonic dysmotility, a neuromuscular disorder.
• It is the least prevalent but most refractory chronic constipation phenotype.

Purpose of the Study:

• To provide an overview of the pathophysiology, diagnosis, and management of STC.
• To highlight the challenges in diagnosing STC and differentiating it from other constipation types.
• To review the effectiveness of various therapeutic options for STC.

Main Methods:

• Review of existing literature on STC pathophysiology, diagnosis, and treatment.
• Discussion of diagnostic criteria including colonic transit time assessment.
• Analysis of management strategies ranging from lifestyle modifications to surgical interventions.

Main Results:

• STC pathophysiology involves reduced colonic contractions, delayed emptying, and altered neurotransmitter levels.
• Diagnosis requires ruling out other constipation types and assessing colonic transit time.
• Prokinetics are a mainstay for refractory cases, with surgery offering an option for medically intractable STC.

Conclusions:

• STC is a challenging condition with a significant disease burden.
• A structured diagnostic and management approach is crucial for clinicians.
• While various therapies exist, their effectiveness varies, and surgical intervention may be necessary for refractory cases.