Feasibility, safety, and diagnostic yield of the Extra Wide Angle View (EWAVE) colonoscope for the detection of colorectal lesions

Maxime E. S. Bronzwaer; Evelien Dekker; Vincens Weingart; Stefan Groth; Mathieu Pioche; Jérôme Rivory; Torsten Beyna; Horst Neuhaus; Thierry Ponchon; Hans Allescher; Paul Fockens; Thomas Rösch

doi:10.1055/s-0043-120666

Endoscopy, Inhaltsverzeichnis

Endoscopy 2018; 50(01): 63-68
DOI: 10.1055/s-0043-120666

Innovations and brief communications

Feasibility, safety, and diagnostic yield of the Extra Wide Angle View (EWAVE) colonoscope for the detection of colorectal lesions

Authors

Maxime E. S. Bronzwaer

¹Department of Gastroenterology and Hepatology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
Evelien Dekker

¹Department of Gastroenterology and Hepatology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands

²Department of Endoscopy, Bergman Inwendige Zorg Amsterdam (IZA), Amsterdam, The Netherlands
Vincens Weingart

³Medical Department, Klinikum Garmisch-Partenkirchen, Ludwig-Maximilians University, Garmisch-Partenkirchen, Germany
Stefan Groth

⁴Department of Interdisciplinary Endoscopy, University Hospital Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany
Mathieu Pioche

⁵Department of Endoscopy and Gastroenterology, Hôpital Edouard Herriot, University of Lyon, Lyon, France
Jérôme Rivory

⁵Department of Endoscopy and Gastroenterology, Hôpital Edouard Herriot, University of Lyon, Lyon, France
Torsten Beyna

⁶Department of Gastroenterology and Hepatology, Evangelischen Krankenhaus Düsseldorf, Düsseldorf, Germany
Horst Neuhaus

⁶Department of Gastroenterology and Hepatology, Evangelischen Krankenhaus Düsseldorf, Düsseldorf, Germany
Thierry Ponchon

⁵Department of Endoscopy and Gastroenterology, Hôpital Edouard Herriot, University of Lyon, Lyon, France
Hans Allescher

³Medical Department, Klinikum Garmisch-Partenkirchen, Ludwig-Maximilians University, Garmisch-Partenkirchen, Germany
Paul Fockens

¹Department of Gastroenterology and Hepatology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands

²Department of Endoscopy, Bergman Inwendige Zorg Amsterdam (IZA), Amsterdam, The Netherlands
Thomas Rösch

⁴Department of Interdisciplinary Endoscopy, University Hospital Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany

Abstract

Background and study aims The adenoma detection rate (ADR) of conventional colonoscopy can still be improved. We conducted a prospective multicenter cohort study to assess the feasibility, safety, and diagnostic yield of the Extra Wide Angle View (EWAVE) colonoscope, which offers a 235° view obtained from a forward-viewing and two lateral backward-viewing lenses incorporated into one image.

Patients and methods The study was performed between November 2015 and June 2016. EWAVE colonoscopy was performed in patients with an increased risk of colorectal cancer by experienced and EWAVE-trained endoscopists (≥ 500 colonoscopies, ≥ 10 with the EWAVE system).

Results A total of 193 patients underwent EWAVE colonoscopy. The cecal intubation rate was 97.4 %. EWAVE colonoscopy had a polyp detection rate (PDR) of 61.1 % (118 /193), ADR of 39.9 % (77 /193), and advanced ADR of 13.5 % (26 /193). No adverse events occurred.

Conclusions EWAVE colonoscopy is feasible and safe. The ADR appears comparable to those achieved with conventional colonoscopes in similar patient populations. To further elucidate the additional benefits of wide-angle-view colonoscopes, randomized trials would be required.

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Referenzen

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