World J Meta-Anal. Dec 28, 2020; 8(6): 462-471 Published online Dec 28, 2020. doi: 10.13105/wjma.v8.i6.462
Split-dose vs same-day bowel preparation for afternoon colonoscopies: A meta-analysis of randomized controlled trials
Nasim Parsa, Eric A Grisham, Courtney J Cockerell, Michelle L Matteson-Kome, Ramakrishna V Bysani, Sami Samiullah, Douglas L Nguyen, Veysel Tahan, Yezaz A Ghouri, Srinivas R Puli, Matthew L Bechtold
Nasim Parsa, Eric A Grisham, Courtney J Cockerell, Michelle L Matteson-Kome, Ramakrishna V Bysani, Sami Samiullah, Veysel Tahan, Yezaz A Ghouri, Matthew L Bechtold, Division of Gastroenterology and Hepatology, Department of Medicine, University of Missouri - Columbia, Columbia, MO 65212, United States
Douglas L Nguyen, Division of Gastroenterology, Heart of the Rockies Regional Medical Center, Colorado Springs, CO 80907, United States
Srinivas R Puli, Division of Gastroenterology, University of Illinois - Peoria, Peoria, IL 61604, United States
Author contributions: Parsa N, Cockerell CJ, and Bechtold ML designed the meta-analysis; Parsa N, Grisham EA, Cockerell CJ, and Bysani RV acquired the data; Matteson-Kome ML, Samiullah S, Nguyen DL, and Bechtold ML analyzed and interpreted the data; Parsa N, Grisham EA, Cockerell CJ, and Bysani RV drafted the manuscript; Samiullah S, Nguyen DL, Tahan V, Ghouri YA, Puli SR, and Bechtold ML critically revised the manuscript; and Matteson-Kome ML, Nguyen DL, Puli SR, and Bechtold ML provided statistical expertise.
Conflict-of-interest statement: The authors have no conflicts of interest for this manuscript.
PRISMA 2009 Checklist statement: The authors adhered to the PRISMA guidelines.
Corresponding author: Matthew L Bechtold, AGAF, FACG, FACP, FASGE, MD, Attending Doctor, Professor, Division of Gastroenterology and Hepatology, Department of Medicine, University of Missouri - Columbia, 5 Hospital Drive, Columbia, MO 65212, United States. bechtoldm@health.missouri.edu
Received: July 15, 2020 Peer-review started: July 15, 2020 First decision: November 2, 2020 Revised: November 11, 2020 Accepted: November 21, 2020 Article in press: November 21, 2020 Published online: December 28, 2020 Processing time: 166 Days and 4.5 Hours
ARTICLE HIGHLIGHTS
Research background
Bowel preparation for afternoon colonoscopies is important for screening for colorectal cancer.
Research motivation
Bowel preparation for afternoon colonoscopies is controversial. Examining the best approach would be beneficial for patients and those performing colonoscopies.
Research objectives
This meta-analysis examines the use of same-day preparation (SaD) or split-dose preparation (SpD) for afternoon colonoscopies.
Research methods
An extensive literature search was conducted using multiple databases. Only randomized controlled trials in adults that compared SaD to SpD with Ottawa bowel preparation score (OBPS) were included. Odds ratio or mean difference was used to analyze outcomes.
Research results
No differences were observed for satisfactory bowel preparation based on OBPS among participants receiving SaD vs SpD overall (P = 0.07), when the two groups received the same preparation formula (polyethylene glycol, PEG) (P = 0.46), and when the two groups received the same formula and volume (4 L PEG) (P = 0.64).
Research conclusions
In patients undergoing afternoon colonoscopies, SpD is comparable with SaD in terms of satisfactory bowel preparations.
Research perspectives
Patients and proceduralists may be confident in using either SaD or SpD for afternoon colonoscopies.
