Volume 37, Issue 7 pp. 1290-1297
Original Article - Gastroenterology (Clinical)

Optimal candidates for early colonoscopy in the management of acute lower gastrointestinal bleeding

Masachika Saino

Masachika Saino

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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Taiki Aoyama

Corresponding Author

Taiki Aoyama

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

Correspondence

Dr Taiki Aoyama, Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, 2-1-1 Kabeminami, Asakita-ku, Hiroshima 731-0293, Japan.

Email: [email protected]

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Masahiro Yamane

Masahiro Yamane

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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Satoshi Masuda

Satoshi Masuda

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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Risa Nomura

Risa Nomura

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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Kenjiro Shigita

Kenjiro Shigita

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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Naoki Asayama

Naoki Asayama

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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Akira Fukumoto

Akira Fukumoto

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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Shinichi Mukai

Shinichi Mukai

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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Shinji Nagata

Shinji Nagata

Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan

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First published: 25 March 2022

Declaration of conflict of interest: The authors have no conflict of interest to disclose.

Ethical approval: This study was approved by the Institutional Review Board of the Hiroshima City Asa Citizens Hospital on March 29, 2021 (IRB no. 03-1-4), which waived the requirement for informed consent given the retrospective nature of the study.

Financial support: This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.

Abstract

Background and Aim

Early colonoscopy has not shown any advantages over elective colonoscopy in reducing the risk of early rebleeding (≤ 30 days) after acute lower gastrointestinal bleeding (ALGIB). Considering the heterogeneity among patients with ALGIB, we sought to evaluate appropriate candidates for early colonoscopy.

Methods

A total of 592 patients with ALGIB were enrolled, and the clinical outcomes of early colonoscopy were investigated. Thereafter, the participants were divided into two groups: the recent bleeding group (n = 445), with hematochezia 0–6 h before hospital arrival, and non-recent bleeding group (n = 147). The clinical outcomes yielded by early colonoscopy were assessed in each group.

Results

The multivariate analysis including the entire population revealed that early colonoscopy (< 24 h) did not reduce the risk of early rebleeding (adjusted odds ratio [AOR], 0.88; 95% confidence interval [CI], 0.55–1.39). However, in the subgroup analysis, early colonoscopy independently reduced the risk of early rebleeding in the recent bleeding group (AOR, 0.56; 95% CI, 0.33–0.94). Moreover, a reduction in the need for radiological or surgical intervention (AOR, 0.34), transfusion (AOR, 0.62), and prolonged hospitalization (AOR, 0.42), as well as improvement in diagnostic yield (AOR, 1.78) and endoscopic treatment rates (AOR, 1.66), were observed. Early colonoscopy did not improve the outcomes of the non-recent bleeding group.

Conclusions

Early colonoscopy is not required for all patients with ALGIB. However, it may be suitable for those with hematochezia 0–6 h before hospital arrival, as it reduces early rebleeding and improves clinical outcomes.

Data availability statement

The datasets used and/or analyzed during the current study are available from the corresponding author upon reasonable request.

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