When fiber is not enough: current thinking on constipation management.

Area of Science:

• Gastroenterology
• Digestive Health

Background:

• Constipation is a prevalent gastrointestinal disorder.
• Many patients do not respond to basic interventions like increased fiber and fluid intake.
• Primary constipation, without a clear cause, is common and presents in distinct patterns.

Purpose of the Study:

• To summarize current understanding of constipation etiology, pathology, and classification.
• To present a stepwise approach for evaluating and managing chronic constipation.
• To outline treatment strategies based on constipation subtypes.

Main Methods:

• Review of current understanding of constipation.
• Classification of primary constipation into three patterns: constipation-predominant irritable bowel syndrome, slow transit constipation, and pelvic floor dysfunction.
• Stepwise evaluation including history, physical examination, and laboratory studies.

Main Results:

• Dyssynergic defecation (pelvic floor dysfunction) often responds to biofeedback and pelvic muscle re-education.
• Constipation-predominant irritable bowel syndrome management involves diet, fiber, and self-care education.
• Slow transit constipation may benefit from fiber and activity, often requiring laxative therapy (bulk and osmotic agents first-line, stimulants for PRN use).

Conclusions:

• Effective constipation management requires identifying the underlying pattern.
• Treatment should be tailored to specific constipation types for optimal outcomes.
• A systematic approach to evaluation and management improves patient care for chronic constipation.