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Digestive Diseases and Sciences

, Volume 62, Issue 9, pp 2489–2497 | Cite as

Comparison of 4-L Polyethylene Glycol and 2-L Polyethylene Glycol Plus Ascorbic Acid in Patients with Inactive Ulcerative Colitis

  • Eun Soo Kim
  • Kyeong Ok Kim
  • Byung Ik Jang
  • Eun Young Kim
  • Yoo Jin Lee
  • Hyun Seok Lee
  • Seong Woo Jeon
  • Hyun Jin Kim
  • Sung Kook KimEmail author
  • On behalf of Crohn’s and Colitis Association in Daegu-Gyeongbuk (CCAiD)
Original Article

Abstract

Background

Although colonoscopy preparation may cause symptom flares in patients with ulcerative colitis (UC), little is known about the standard preparation regimen in this population.

Aim

We aimed to compare 4L polyethylene glycol (4L-PEG) with 2L polyethylene glycol plus ascorbic acid (2L-PEG-Asc) in quiescent UC patients.

Methods

Patients with inactive UC undergoing colonoscopy for surveillance or checkup of mucosal healing were prospectively enrolled at 5 tertiary hospitals. They were randomly assigned to 4L-PEG and 2L-PEG-Asc groups. The Boston Bowel Preparation Scale (BBPS) was used for the preparation quality. Symptoms were assessed using the Simple Clinical Colitis Activity Index (SCCAI) before colonoscopy, at 1 and 4 weeks after the procedure.

Results

Overall, 109 patients were included in the study (4L-PEG group 53, 2L-PEG-Asc group 56, the mean age at diagnosis 42.25 years, male 77). The quality of preparation was comparable between the groups (BBPS ≥ 6, 96.2 vs. 92.9%, p = 0.679). Although 26 patients (23.8%) had increased SCCAI scores within 4 weeks after colonoscopy, resulting in a medication dose-up or add-on in 3 patients (2.7%), the rise in scores was not different between the groups. No serious adverse events during preparation were observed in either group. However, the 2L-PEG-Asc group was more likely to be willing to repeat the preparation with the same agent than the 4L-PEG group (82.1 vs. 64.2%, respectively, p = 0.034).

Conclusion

PEG-based regimens with different volumes are equally effective and safe in inactive UC patients. 2L-PEG-Asc is more acceptable in this population as indicated by the willingness for further usage.

Keywords

Ulcerative colitis Colonoscopy Preparation Polyethylene glycol 

Notes

Acknowledgment

This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2015R1D1A1A02062168).

Compliance with ethical standards

Conflict of interest

None.

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Eun Soo Kim
    • 1
  • Kyeong Ok Kim
    • 2
  • Byung Ik Jang
    • 2
  • Eun Young Kim
    • 3
  • Yoo Jin Lee
    • 4
  • Hyun Seok Lee
    • 1
  • Seong Woo Jeon
    • 1
  • Hyun Jin Kim
    • 5
  • Sung Kook Kim
    • 1
    Email author
  • On behalf of Crohn’s and Colitis Association in Daegu-Gyeongbuk (CCAiD)
  1. 1.Division of Gastroenterology and Hepatology, Department of Internal MedicineKyungpook National University School of MedicineDaeguKorea
  2. 2.Division of Gastroenterology and Hepatology, Department of Internal MedicineYeungnam University College of MedicineDaeguKorea
  3. 3.Division of Gastroenterology and Hepatology, Department of Internal MedicineCatholic University of Daegu School of MedicineDaeguKorea
  4. 4.Division of Gastroenterology, Department of Internal MedicineKeimyung University School of MedicineDaeguKorea
  5. 5.Division of Gastroenterology, Department of Internal MedicineGyeongsang National University School of MedicineChangwonKorea

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