Conclusion
ulcer
ADVERSE EVENTS, ULCER
In conclusion, this multicentre, randomized, single-blind trial emphasizes the effectiveness, convenience, and safety of our novel protective gel when applied over wounds following oesophageal ESD. It could be applied to cover more than 90% of the ulcer area within approximately three minutes. More importantly, no severe relative adverse events were reported during the 1-month follow-up. Therefore, we recommend using this protective gel as a prophylactic intervention to promote ulcer healing and protect the ulcer bed after oesophageal ESD.