A Predictive Model for Inadequate Bowel Preparation

A Predictive Model for Inadequate Bowel Preparation: Development and Validation With a Randomized Controlled Trial

We aimed to develop a predictive model of inadequate bowel preparation and to further validate it by a randomized controlled trial.

Inclusion Criteria:

• Patients aged 18-75 years undergoing colonoscopy

Exclusion Criteria:

• known or suspected bowel obstruction, stricture or perforation
• compromised swallowing reflex or mental status
• severe chronic renal failure(creatinine clearance < 30 ml/min)
• severe congestive heart failure (New York Heart Association class III or IV)
• uncontrolled hypertension (systolic blood pressure > 170 mm Hg, diastolic blood pressure > 100 mm Hg)
• dehydration
• disturbance of electrolytes
• pregnancy or lactation
• hemodynamically unstable
• unable to give informed consent