Endoscopic submucosal dissection (ESD) is a technically difficult and time-consuming procedure. Several water-jet knives have been developed to address this issue. The aim of this study was to develop a new ESD method using continuous low-pressure water injection at 1-2 atmosphere with a tip-injected electric knife while dissection simultaneous cutting, dissection, electrocoagulation, and hemostasis, which was so called as water-injecting ESD (W-ESD) to treat early gastric cancer and compare the efficacy and safety with conventional methods.
Study Type
OBSERVATIONAL
Enrollment
548
Shanghai East Hospital
Shanghai, Shanghai Municipality, China
Total procedure time
Average time to complete endoscopic resection
Time frame: Immediately after surgery
Circumferential incision time
Average time for APC labeling of the lesion margin during circumferential incision
Time frame: Immediately after surgery
Dissection time
Average time to complete endoscopic dissection
Time frame: Immediately after surgery
Dissection speed
Average speed of endoscopic dissection
Time frame: Immediately after surgery
Completeness of en bloc resection
Number of patients with complete lesion resection / Total number of subjects
Time frame: Immediately after surgery
Adverse event rate
The proportion of adverse events occurring in subjects following surgery (though not necessarily causally related to treatment), encompassing perforation complications, myomere injuries, intraoperative blood loss, thermocoagulation forceps replacements, delayed bleeding, and delayed perforation.
Time frame: Immediately after surgery and one month post-surgery
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