A Predictive Model for Inadequate Bowel Preparation

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