Abstract
Background and aims
Conventional endoscopic submucosal dissection (C-ESD) is a technically demanding procedure with prolonged procedure times and higher risk of adverse events. To overcome the procedural difficulty of ESD, several traction-assisted techniques (T-ESD) have been developed to improve visualization of the submucosa in hopes to facilitate safe and effective dissection. The aim of this study was to conduct a meta-analysis that compares short-term outcomes (30-day) of T-ESD to C-ESD.
Methods
Clinical studies published up to April 2020 comparing the efficacy and safety of T-ESD and C-ESD were identified using electronic bibliographic searches. Both randomized controlled trials and observational studies were included. Outcomes of interests were procedure time, rates of en bloc and R0 resection, and rates of adverse events. Fixed effect and random effect model were used to calculate pooled mean difference for continuous variables and risk differences (RDs) for categorical variables.
Results
Twenty-three studies with 2574 patients were included in this meta-analysis, with a total of 2582 lesions (1292 T-ESD and 1290 C-ESD). Pooled estimates of T-ESD showed shorter procedure times (weighted mean difference = −20.35 min, 95% CI −27.51 to −13.19, p < 0.001), higher R0 resection rates (RD 0.04, 95% CI 0.01–0.06, p = 0.004) and lower perforation rates (RD −0.03, 95% CI −0.04 to −0.01, p = < 0.0001). No significant differences were seen in en bloc rates and bleeding risk between the two groups.
Conclusions
Traction-assisted ESD results in shorter procedure time, improved R0 resection rates and lower risk of perforation as compared to conventional ESD.
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Abbreviations
- OR:
-
Odds ratio
- ESD:
-
Endoscopic submucosal dissection
- GI:
-
Gastrointestinal
- EMR:
-
Endoscopic mucosal resection
- T-ESD:
-
Traction-assisted endoscopic submucosal dissection
- C-ESD:
-
Conventional endoscopic submucosal dissection
- PRISMA:
-
Preferred reporting items for systematic reviews and meta-analyses
- RCTs:
-
Randomized controlled trials
- NOS:
-
Newcastle–Ottawa quality assessment scale
- CIs:
-
Confidence intervals
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Saowanee Ngamruengphong is a consultant for Boston Scientific. Chawin Lopimpisuth, Malorie Simons, Venkata S. Akshintala, Klaorat Prasongdee and Julie Nanavati have no conflicts of interest or financial ties to disclose.
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Lopimpisuth, C., Simons, M., Akshintala, V.S. et al. Traction-assisted endoscopic submucosal dissection reduces procedure time and risk of serious adverse events: a systematic review and meta-analysis. Surg Endosc 36, 1775–1788 (2022). https://doi.org/10.1007/s00464-021-08452-8
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DOI: https://doi.org/10.1007/s00464-021-08452-8