Evidence map›Paper›PMID 34475741›Full record

ArticleAnnals of gastroenterology

Comparison of left versus right lateral starting position on colonoscopy: a systematic review and meta-analysis of randomized controlled trials.

Daryl Ramai, Jameel Singh, Olivia W Brooks, Mohamed Barakat, Babu P Mohan, Saurabh Chandan, Shahab R Khan, Banreet Dhindsa, Amaninder Dhaliwal, Andrew Ofosu and 1 more

Registry-linked trialOpen access · diamondAbstract read
In one paragraph

Article in Annals of gastroenterology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07517848 (Comparison of the Left-Lateral Horizontal and Supine Positions for Colonoscopy Intervention), which is not on this map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 29% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07517848 nacompletednot on this map

Comparison of the Left-Lateral Horizontal and Supine Positions for Colonoscopy Intervention: A Randomized Controlled Study

TypeinterventionalSponsorManisa Celal Bayar UniversityRan2021 to 2024Enrolled198ConditionsColorectal Disorders, Colorectal Neoplasms, Colorectal Polyp, Colo-rectal CancerArmsColonoscopy after bowel cleansing
3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.

  1. Pooled it
  2. The Effects of Positioning During Colonoscopy on Efficacy and Post-procedure Comfort.The Turkish journal of gastroenterology : the official journal of Turkish Society of Gastroenterology · 2025
    Trial
  3. Patient Position in Operative Endoscopy.Journal of clinical medicine · 2023
    Review
  4. Authors' reply.Annals of gastroenterology
    Article
  5. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 1 institution in 1 country.

Daryl RamaiDepartment of Internal Medicine, The Brooklyn Hospital Center, Brooklyn, New York (Daryl Ramai, Olivia W. Brooks).
Jameel SinghDepartment of Internal Medicine, Mather Hospital, Port Jefferson, New York (Jameel Singh).
Olivia W BrooksDepartment of Internal Medicine, The Brooklyn Hospital Center, Brooklyn, New York (Daryl Ramai, Olivia W. Brooks).
Mohamed BarakatDivision of Gastroenterology, The Brooklyn Hospital Center, Brooklyn, New York (Mohamed Barakat).
Babu P MohanDivision of Gastroenterology and Hepatology, University of Utah School of Medicine, Salt Lake City, Utah (Babu P. Mohan, Douglas G. Adler).
Saurabh ChandanDivision of Gastroenterology and Hepatology, CHI Health Creighton University Medical Center, Omaha, Nebraska (Saurabh Chandan).
Shahab R KhanDivision of Gastroenterology, Rush University Medical Center, Chicago, Illinois (Shahab R. Khan).
Banreet DhindsaGastroenterology and Hepatology, University of Nebraska Medical Center, Omaha, Nebraska (Banreet Dhindsa).
Amaninder DhaliwalDivision of Gastroenterology, Moffitt Cancer Center, University of South Florida, Tampa, Florida (Amaninder Dhaliwal).
Andrew OfosuDivision of Gastroenterology, Stanford University, Stanford, California (Andrew Ofosu), USA.
Douglas G AdlerDivision of Gastroenterology and Hepatology, University of Utah School of Medicine, Salt Lake City, Utah (Babu P. Mohan, Douglas G. Adler).
Brooklyn Hospital Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundModifying patient position during colonoscopy has been proposed as a simple and inexpensive technique to increase luminal distention and improve navigation through the large bowel. The left lateral (LL) decubitus starting position is commonly used during colonoscopy. However, reports indicate that other starting positions may offer additional benefit. We aimed to determine if the right lateral (RL) starting position compared to the standard LL starting position could improve outcomes in colonoscopy.

methodsWe searched PubMed, Medline, and EMBASE through June 2020 to identify studies comparing RL and LL starting positions during colonoscopy. The primary outcomes included mean cecal insertion time and cecal intubation rate, and adverse events were assessed by pooling data using a random-effects model expressed in terms of odds ratio (OR), mean difference, and 95% confidence interval (CI).

resultsWe identified 5 randomized controlled trials, including 809 participants, that compared LL vs. RL colonoscopy. The pooled OR for cecal intubation rate was 1.3 (95%CI 0.8-2.3; P=0.3). The mean difference in mean cecal insertion time was 0.08 (95%CI -0.09 to 0.26; P=0.4). Heterogeneity between studies was low (

conclusionThe RL starting position for colonoscopy was comparable to the LL and offered no additional benefit in terms of cecal intubation time, intubation rate, or patient discomfort.

Indexed as

cecal intubationcolonoscopyleft lateralRight lateralstarting position

Identifiers

PMID34475741
PMCPMC8375655
OpenAlexW3169479201

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.