Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled Trial

Background and Aims. Simethicone (SIM), as an antifoaming agent, has been shown to improve bowel preparation during colonoscopy. However, the optimal timing of SIM addition remained undetermined. We aimed to investigate the optimal timing of SIM addition to polyethylene glycol (PEG) to improve bowel...

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Main Authors: Zhen-wen Wu, Sheng-gang Zhan, Mei-feng Yang, Yi-teng Meng, Feng Xiong, Cheng Wei, Ying-xue Li, Ding-guo Zhang, Zheng-lei Xu, Ben-hua Wu, Rui-yue Shi, Jun Yao, Li-sheng Wang, De-feng Li
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:Canadian Journal of Gastroenterology and Hepatology
Online Access:http://dx.doi.org/10.1155/2021/4032285
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author Zhen-wen Wu
Sheng-gang Zhan
Mei-feng Yang
Yi-teng Meng
Feng Xiong
Cheng Wei
Ying-xue Li
Ding-guo Zhang
Zheng-lei Xu
Ben-hua Wu
Rui-yue Shi
Jun Yao
Li-sheng Wang
De-feng Li
author_facet Zhen-wen Wu
Sheng-gang Zhan
Mei-feng Yang
Yi-teng Meng
Feng Xiong
Cheng Wei
Ying-xue Li
Ding-guo Zhang
Zheng-lei Xu
Ben-hua Wu
Rui-yue Shi
Jun Yao
Li-sheng Wang
De-feng Li
author_sort Zhen-wen Wu
collection DOAJ
description Background and Aims. Simethicone (SIM), as an antifoaming agent, has been shown to improve bowel preparation during colonoscopy. However, the optimal timing of SIM addition remained undetermined. We aimed to investigate the optimal timing of SIM addition to polyethylene glycol (PEG) to improve bowel preparation. Methods. Eligible patients were randomly assigned to two groups: the SIM evening group (SIM addition to PEG in the evening of the day prior to colonoscopy) and the SIM morning group (SIM addition to PEG in the morning of colonoscopy). The primary outcome was Bubble Scale (BS). The secondary outcomes were Boston Bowel Preparation Scale (BBPS) and adenoma detection rate (ADR). Results. A total of 419 patients were enrolled in this study. The baseline characteristics of the patients were similar in both groups. No significant differences were observed in terms of BS (8.76 ± 0.90 vs. 8.65 ± 1.16, P = 0.81), ADR (34.1% vs. 30.8%, P = 0.47), Boston Bowel Preparation Scale (BBPS) (8.59 ± 0.94 vs. 8.45 ± 1.00, P = 0.15), and withdrawal time (8.22 ± 2.04 vs. 8.01 ± 2.51, P = 0.094) between the two groups. Moreover, safety and compliance were similar in both groups. However, the SIM evening group was associated with shorter cecal intubation time (3.80 ± 1.81 vs. 4.42 ± 2.03, P < 0.001), higher BS (2.95 ± 0.26 vs. 2.88 ± 0.38, P = 0.04) in the right colon, and diminutive ADR (62.5% vs. 38.6%, P = 0.022) in the right colon, when compared to the SIM evening group. Conclusions. The SIM addition to PEG in the evening of the day prior to colonoscopy can shorten cecal intubation time and improve BS scores and diminutive ADR of the right colon compared with the SIM addition to PEG in the morning of colonoscopy in bowel preparation.
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spelling doaj-art-9c1d5c8ca8be4eb99f1aee5dd9f460082025-02-03T01:25:24ZengWileyCanadian Journal of Gastroenterology and Hepatology2291-27972021-01-01202110.1155/2021/4032285Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled TrialZhen-wen Wu0Sheng-gang Zhan1Mei-feng Yang2Yi-teng Meng3Feng Xiong4Cheng Wei5Ying-xue Li6Ding-guo Zhang7Zheng-lei Xu8Ben-hua Wu9Rui-yue Shi10Jun Yao11Li-sheng Wang12De-feng Li13Department of GastroenterologyDepartment of GastroenterologyDepartment of HematologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyDepartment of GastroenterologyBackground and Aims. Simethicone (SIM), as an antifoaming agent, has been shown to improve bowel preparation during colonoscopy. However, the optimal timing of SIM addition remained undetermined. We aimed to investigate the optimal timing of SIM addition to polyethylene glycol (PEG) to improve bowel preparation. Methods. Eligible patients were randomly assigned to two groups: the SIM evening group (SIM addition to PEG in the evening of the day prior to colonoscopy) and the SIM morning group (SIM addition to PEG in the morning of colonoscopy). The primary outcome was Bubble Scale (BS). The secondary outcomes were Boston Bowel Preparation Scale (BBPS) and adenoma detection rate (ADR). Results. A total of 419 patients were enrolled in this study. The baseline characteristics of the patients were similar in both groups. No significant differences were observed in terms of BS (8.76 ± 0.90 vs. 8.65 ± 1.16, P = 0.81), ADR (34.1% vs. 30.8%, P = 0.47), Boston Bowel Preparation Scale (BBPS) (8.59 ± 0.94 vs. 8.45 ± 1.00, P = 0.15), and withdrawal time (8.22 ± 2.04 vs. 8.01 ± 2.51, P = 0.094) between the two groups. Moreover, safety and compliance were similar in both groups. However, the SIM evening group was associated with shorter cecal intubation time (3.80 ± 1.81 vs. 4.42 ± 2.03, P < 0.001), higher BS (2.95 ± 0.26 vs. 2.88 ± 0.38, P = 0.04) in the right colon, and diminutive ADR (62.5% vs. 38.6%, P = 0.022) in the right colon, when compared to the SIM evening group. Conclusions. The SIM addition to PEG in the evening of the day prior to colonoscopy can shorten cecal intubation time and improve BS scores and diminutive ADR of the right colon compared with the SIM addition to PEG in the morning of colonoscopy in bowel preparation.http://dx.doi.org/10.1155/2021/4032285
spellingShingle Zhen-wen Wu
Sheng-gang Zhan
Mei-feng Yang
Yi-teng Meng
Feng Xiong
Cheng Wei
Ying-xue Li
Ding-guo Zhang
Zheng-lei Xu
Ben-hua Wu
Rui-yue Shi
Jun Yao
Li-sheng Wang
De-feng Li
Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled Trial
Canadian Journal of Gastroenterology and Hepatology
title Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled Trial
title_full Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled Trial
title_fullStr Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled Trial
title_full_unstemmed Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled Trial
title_short Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled Trial
title_sort optimal timing of simethicone supplement for bowel preparation a prospective randomized controlled trial
url http://dx.doi.org/10.1155/2021/4032285
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