Evidence map›Paper›PMID 34765848›Full record

ArticleVideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy2021

The use of the cap and underwater technique as an aid in endoscopic diagnosis and treatment of upper gastrointestinal bleeding: case series.

Fernando Lander Mota, Deborah Marques Centeno, Fernando J S de Oliveira, Eduardo M A Pereira, Sarah Madeira Jacinto, Pedro H A F Cardoso, Savério T N Armellini, Marco Aurélio D'Assuncao

Open access · goldAbstract read
In one paragraph

Article in VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.3field-weighted citation impact, top 40% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. [Emerging Diagnostic Techniques and Therapies for Upper Gastrointestinal Bleeding].The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi · 2025
    Review
  2. The use of water immersion technique during device-assisted (single-balloon) enteroscopy to treat actively bleeding jejunal Dieulafoy's lesion.VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy · 2022
    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

8 authors at 1 institution in 1 country.

Fernando Lander MotaDepartment of Digestive Endoscopy, Hospital Sírio-Libanês, São Paulo, Brazil.
Deborah Marques CentenoDepartment of Digestive Endoscopy, Hospital Sírio-Libanês, São Paulo, Brazil.
Fernando J S de OliveiraDepartment of Digestive Endoscopy, Hospital Sírio-Libanês, São Paulo, Brazil.
Eduardo M A PereiraDepartment of Digestive Endoscopy, Hospital Sírio-Libanês, São Paulo, Brazil.
Sarah Madeira JacintoDepartment of Digestive Endoscopy, Hospital Sírio-Libanês, São Paulo, Brazil.
Pedro H A F CardosoDepartment of Digestive Endoscopy, Hospital Sírio-Libanês, São Paulo, Brazil.
Savério T N ArmelliniDepartment of Digestive Endoscopy, Hospital Sírio-Libanês, São Paulo, Brazil.
Marco Aurélio D'AssuncaoDepartment of Digestive Endoscopy, Hospital Sírio-Libanês, São Paulo, Brazil.
Hospital Sírio-Libanês · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsUpper GI bleeding (UGIB) is a medical emergency associated with elevated mortality and significant costs to the health care system. EGD is currently the method of choice for the diagnosis and management of these conditions. However, the location of bleeding lesions and technical difficulties in achieving endoscope stability may challenge even the most experienced endoscopists. Herein, we demonstrate the use of the cap and underwater technique as a helpful aid in these situations.

methodsWe present a case series of 4 patients with acute UGIB who underwent EGD with suboptimal endoscopic visualization or technical difficulties in identifying the source of bleeding. A transparent plastic cap was attached to the distal tip of the gastroscope, and the water immersion technique (underwater) was used for endoscopic re-evaluation of the bleeding site.

resultsThree patients presented with duodenal bleeding, and 1 was diagnosed with diffuse bleeding from the esophagus. The clear and accurate identification of the source of bleeding and effective hemostasis were possible after cap and underwater technique evaluation in all patients.

conclusionThe use of the cap and underwater technique is a simple, safe, and low-cost strategy that improves the identification and control of UGIB in locations with poor visibility and technical challenges during endoscopic evaluation.

Indexed as

UGIB, upper GI bleeding

Identifiers

PMID34765848
PMCPMC8573699
OpenAlexW3197032152

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.