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Related Experiment Video

Updated: May 10, 2026

E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy

E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy

Published on: August 1, 2019

Optimal and safe bowel preparation for colonoscopy.

¹Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea.

Clinical Endoscopy

|June 15, 2013

Summary

A low-fiber diet the day before colonoscopy improves bowel preparation. Split-dose polyethylene glycol is recommended for morning procedures, while alternatives exist for afternoon colonoscopies.

Area of Science:

Gastroenterology
Endoscopy

Background:

Adequate bowel preparation is crucial for effective colonoscopy.
Patient adherence and preparation methods significantly impact colon cleansing quality.

Purpose of the Study:

To review general and patient-specific considerations for optimal bowel preparation before colonoscopy.
To evaluate the efficacy of different bowel preparation strategies and agents.

Main Methods:

Literature review of studies on bowel preparation for colonoscopy.
Analysis of dietary modifications, timing of administration, and specific agents.

Main Results:

A low-fiber diet is an independent predictor of adequate bowel preparation.
Routine enemas or prokinetics do not improve cleansing beyond oral preparation.

Keywords:

Ascorbic acid Colonoscopy Magnesium Polyethylene glycols Preparation

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Split-dose 4L polyethylene glycol is recommended for morning colonoscopies.

Alternatives include 2L polyethylene glycol with ascorbic acid or 2L sodium picosulphate with magnesium citrate.

Polyethylene glycol-based preparations are generally preferred over oral sodium phosphate due to safety.

Conclusions:

Dietary modifications and optimized timing are key to effective bowel preparation.
Polyethylene glycol-based regimens offer a safe and effective option for colonoscopy preparation.