A Randomized Prospective Trial Comparing Low-volume Bowel Preparation Methods

• Study design: endoscopist-blinded, prospective, randomized controlled trial
• Subjects

• Entry criteria: Male or female patients, aged between18 and 80 years undergoing elective outpatient colonoscopy were eligible for the study.
• Exclusion criteria:

patients who had chronic kidney disease, severe heart failure(New York Heart Association [NYHA] class III or IV), uncontrolled hypertension (systolic pressure ≥170 mm Hg, diastolic pressure ≥100 mm Hg), severe constipation, any bowel resection, significant gastroparesis, or suspected bowel obstruction or perforation.

• Sampling design: Consecutive recruitment of consenting patients
• Variables Predictor

• group 1 (SPMC 2) received one sachet of SPMC at 7 p.m the evening before colonoscopy and another sachet of SPMC at 5 hours before procedure
• group 2 (PEG-Asc) received 1 L solution of PEG-Asc at 7 p.m the evening before colonoscopy and another 1 L solution of PEG-Asc at 5 hours before procedure;
• Primary Outcome: Quality of bowel preparation (Boston Bowel Preparation Scale, Aronchick scale, bubble score)
• Secondary Outcome: Tolerability, palatability

Inclusion criteria

• Male or female patients, aged between18 and 80 years undergoing elective outpatient colonoscopy were eligible for the study

Exclusion criteria

• patients who had chronic kidney disease, severe heart failure(New York Heart Association [NYHA] class III or IV), uncontrolled hypertension (systolic pressure ≥170 mm Hg, diastolic pressure ≥100 mm Hg), severe constipation, any bowel resection, significant gastroparesis, or suspected bowel obstruction or perforation.