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Jun Omori,Osamu Goto,Kazutoshi Higuchi,Takamitsu Umeda,Naohiko Akimoto,Masahiro Suzuki,Kumiko Kirita,Eriko Koizumi,Hiroto Noda,Teppei Akimoto,Mitsuru Kaise,Katsuhiko Iwakiri 대한소화기내시경학회 2020 Clinical Endoscopy Vol.53 No.3
Background/Aims: Three-dimensional (3D) flexible endoscopy, a new imaging modality that provides a stereoscopic view, canfacilitate endoscopic hand suturing (EHS), a novel intraluminal suturing technique. This ex-vivo pilot study evaluated the usefulnessof 3D endoscopy in EHS. Methods: Four endoscopists (two certified, two non-certified) performed EHS in six sessions on a soft resin pad. Each sessioninvolved five stitches, under alternating 3D and two-dimensional (2D) conditions. Suturing time (sec/session), changes in suturingtime, and accuracy of suturing were compared between 2D and 3D conditions. Results: The mean suturing time was shorter in 3D than in 2D (9.8±3.4 min/session vs. 11.2±5.1 min/session) conditions and EHSwas completed faster in 3D conditions, particularly by non-certified endoscopists. The suturing speed increased as the 3D sessionsprogressed. Error rates (failure to grasp the needle, failure to thread the needle, and puncture retrial) in the 3D condition were lowerthan those in the 2D condition, whereas there was no apparent difference in deviation distance. Conclusions: 3D endoscopy may contribute to increasing the speed and accuracy of EHS in a short time period. Stereoscopicviewing during 3D endoscopy may help in efficient skill acquisition for EHS, particularly among novice endoscopists.