Endoscopy 2019; 51(04): S33-S34
DOI: 10.1055/s-0039-1681268
ESGE Days 2019 oral presentations
Friday, April 5, 2019 11:00 – 13:00: Colon: resection South Hall 2B
Georg Thieme Verlag KG Stuttgart · New York

3D POLYPECTOMY: RANDOMISED COMPARISON TO 2D POLYPECTOMY IN AN EX-VIVO MODEL

S Gmeiner
1   II. Medizinische Klinik und Poliklinik, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
,
S von Delius
2   Medizinische Klinik II, RoMed Klinikum Rosenheim, Rosenheim, Germany
,
M Abdelhafez
1   II. Medizinische Klinik und Poliklinik, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
,
N Kohn
3   Forschungsgruppe für Minimal-Invasive Interdisziplinäre Therapeutische Intervention (MITI), Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
,
S Reiser
3   Forschungsgruppe für Minimal-Invasive Interdisziplinäre Therapeutische Intervention (MITI), Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
,
J Wießner
1   II. Medizinische Klinik und Poliklinik, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
,
H Feußner
3   Forschungsgruppe für Minimal-Invasive Interdisziplinäre Therapeutische Intervention (MITI), Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
,
D Wilhelm
3   Forschungsgruppe für Minimal-Invasive Interdisziplinäre Therapeutische Intervention (MITI), Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
› Author Affiliations
Further Information

Publication History

Publication Date:
18 March 2019 (online)

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    Aims:

    Three-dimensional (3D) visualisation has been established for laparoscopy, but not for endoluminal flexible endoscopy. In the actual study we investigated the effects of 3D imaging on endoluminal endoscopic procedures.

    Methods:

    The study was conducted as an experimental endoscopic study in an ex-vivo porcine stomach model. Artificial polyps were created by band ligation. For endoluminal polypectomy a commercially available 3D laparoscope from Storz was inserted in a specially designed tube with additional working channels for endoscopic instruments.

    The task was to perform six polypectomies with two-dimensional (2D) and 3D visualisation with an electric endoscopic snare in a prospective randomized cross-over manner. Participants consisted of ten experts (group 1) and ten novices (group 2).

    Duration and completeness were assessed. Before and after each visualisation method the participants had to answer questionnaires and perform tests to evaluate their concentration level and strain.

    Results:

    3D visualisation allowed for significantly faster polypectomy (3D vs. 2D: mean 27 s vs. 36 s; p = 0.029) and led to a significantly higher frequency of complete polypectomy (3D vs. 2D: 106/120, 88% vs. 81/120, 68%; p < 0.01) in both groups.

    Regarding overall workload, the NASA-Task-Load-Index showed similar figures for 3D and 2D. According to the participants, 3D enabled significantly better depth perception than 2D.

    We noticed blurring at close distance for 3D and a tendency to cause higher eye strain.

    Finally, most of the participants favoured the 3D visualisation.

    Conclusions:

    3D imaging may facilitate endoscopic procedures by improving speed and completeness. We did not find increased mental workload and most of our participants preferred the 3D method. The difficulties concerning blurring at close distance could be alleviated by technological progress. Therefore, the development of a flexible 3D endoscope seems promising.


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