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