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Table 1 Multi-loop traction device-assisted ESD versus conventional ESD in the ex vivo pilot study

From: Multi-loop traction device facilitates gastric endoscopic submucosal dissection: ex vivo pilot study and an inaugural clinical experience

Submucosal dissection speed (mm2/min); median (IQR) M-ESD C-ESD p value
Overall (n = 24) 141.5 (60.9–177.6) 35.5 (20.8–52.3) < 0.05
Experts only (n = 12) 168.8 (150.5–280.6) 48.0 (31.1–83.6) < 0.05
Trainees only (n = 12) 60.2 (56.2–73.0) 23.8(20.4–42.0) < 0.05
ESD procedure outcomes M-ESD (n = 12) C-ESD (n = 12) p value
Rate of en bloc resection (%) 100 (12/12) 100 (12/12)
Rate of R0 resection (%) 100 (12/12) 100 (12/12)
Rate of accidental complications (perforation) during ESD (%) 0 (0–6) 0 (0–6)
Overall procedure time (min); median (IQR) 24.0 (17–40) 30.0 (19.8–48.8) 0.56
Local injection time (min); median (IQR) 3.5 (3–5) 3.5 (2.8–8.3) 0.91
Perimeter incision time (min); median (IQR) 7.5(3.8–16.5) 6.0 (3.8–7.3) 0.52
MLTD attachment time (min); median (IQR) 2.5 (2–3)
Submucosal dissection time (min); median (IQR) 7.5 (3–11.3) 20.0 (10.5–27) < 0.05
MLTD retrieving time (min); median (IQR) 1.0 (1–1)
Total local injection volume (mL); median (IQR) 22.5 (16.5–29) 24.0 (18–34.8) 0.58
Specimen area (mm2); median (IQR) 854.1 (559.3–1003.2) 637.8 (559.3–847.8) 0.27
Number of additional local injections; median (IQR) 0 (0–0) 0 (0–0.3) 0.68
  1. C-ESD, conventional ESD; ESD, Endoscopic submucosal dissection; M-ESD, Multi-loop traction device-assisted ESD; MLTD, multi-loop traction device; IQR, interquartile range