Colorectal physiological tests: use or abuse of technology?

Area of Science:

• Gastroenterology and Colorectal Surgery
• Diagnostic Medicine
• Physiological Testing

Background:

• Functional defecation disorders present diagnostic challenges.
• Traditional methods like history and physical examination have limitations in identifying underlying causes.
• Accurate diagnosis is crucial for effective treatment of these conditions.

Purpose of the Study:

• To evaluate the diagnostic utility of various colorectal physiological tests.
• To compare the diagnostic yield of physiological testing with routine clinical assessment.
• To determine the value of these tests across different defecation disorder subtypes.

Main Methods:

• A prospective study involving 308 consecutive patients with functional defecation disorders.
• Patients underwent routine history and physical examination.
• Physiological tests included colonic transit study, manometry, cinedefecography, and electromyography.

Main Results:

• Physiological tests increased definitive diagnoses from 8% to 75% for constipation, 11% to 66% for incontinence, and 23% to 42% for rectal pain.
• Specific diagnoses identified included paradoxical puborectalis contraction, colonic inertia, rectocele, intussusception, and neuropathy.
• Treatable conditions were identified in 67% of constipation and 55% of incontinence patients.

Conclusions:

• Colorectal physiological tests are highly valuable for diagnosing constipation and incontinence.
• These tests offer limited diagnostic benefit for patients with chronic intractable rectal pain.
• Further refinement of diagnostic approaches is needed for refractory rectal pain.