BACKGROUND: Transenteral (TE) administration of a bowel cleanser prior to colonoscopy avoids the discomfort associated with drinking a large volume of unpalatable cleanser. AIM: To explore patient comfort, preference for future colonoscopy, the efficacy and adverse events associated with TE bowel preparation. METHODS: Bowel preparation is traditionally practised using polyethylene glycol (PEG) + ascorbic acid (ASC), which was the treatment used in the control group (peroral group; PO group). In the study group (TE group), PEG + ASC were administered directly to the third portion of the duodenum through a scope immediately after completing upper gastrointestinal endoscopy. RESULTS: A higher proportion of subjects in the TE group graded their degree of comfort as very or rather comfortable (28.4 % in the PO group, 65.1 % in the TE group; p = 0.000) and had greater preference for future colonoscopy (69.6 % in the PO group, 82.5 % in the TE group; p = 0.030), compared with the PO group. The TE group had non-inferiority in efficacy compared with the PO group (non-inferiority margin -15 %; lower limit of 95 % confidence interval for difference between success rates -6.4 %, when using the Aronchick Scale, and -7.1 % when using the Ottawa Scale). Nausea or vomiting were more prevalent during preparation in the PO group (46.1 vs. 17.5 %; p = 0.000), and dizziness was more common in the TE group (0 vs. 12.6 %; p = 0.000). CONCLUSIONS: TE preparation was found to be more comfortable than the traditional peroral method and not inferior in efficacy. The adverse events rate was acceptable.
RCT Entities:
BACKGROUND: Transenteral (TE) administration of a bowel cleanser prior to colonoscopy avoids the discomfort associated with drinking a large volume of unpalatable cleanser. AIM: To explore patient comfort, preference for future colonoscopy, the efficacy and adverse events associated with TE bowel preparation. METHODS: Bowel preparation is traditionally practised using polyethylene glycol (PEG) + ascorbic acid (ASC), which was the treatment used in the control group (peroral group; PO group). In the study group (TE group), PEG + ASC were administered directly to the third portion of the duodenum through a scope immediately after completing upper gastrointestinal endoscopy. RESULTS: A higher proportion of subjects in the TE group graded their degree of comfort as very or rather comfortable (28.4 % in the PO group, 65.1 % in the TE group; p = 0.000) and had greater preference for future colonoscopy (69.6 % in the PO group, 82.5 % in the TE group; p = 0.030), compared with the PO group. The TE group had non-inferiority in efficacy compared with the PO group (non-inferiority margin -15 %; lower limit of 95 % confidence interval for difference between success rates -6.4 %, when using the Aronchick Scale, and -7.1 % when using the Ottawa Scale). Nausea or vomiting were more prevalent during preparation in the PO group (46.1 vs. 17.5 %; p = 0.000), and dizziness was more common in the TE group (0 vs. 12.6 %; p = 0.000). CONCLUSIONS: TE preparation was found to be more comfortable than the traditional peroral method and not inferior in efficacy. The adverse events rate was acceptable.
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