[Analysis of the efficacy of an endotherapy rob-assistant system in the treatment of gastrointestinal polyps in beagle dogs].

Objective: To evaluate the efficacy of the endotherapy rob-assistant (ERA) system in treating gastrointestinal polyps in beagle dogs. Methods: Sixteen beagle dogs, aged 10-20 months and weighing 8-15 kg, were enrolled. They were randomly divided into an experimental group (ERA-assisted, n=8) and a control group (assisted by an instrument nurse, n=8) using a random number table. Artificial polyps were created in the gastric antrum, gastric body, gastric fundus, and colon using high-frequency electrocoagulation marking. Endoscopic mucosal biopsy and endoscopic mucosal resection were then performed. Procedural success rate, operation time, and complications were compared between the groups. Wound healing was assessed two weeks postoperatively. Results: All the artificial polyp models were successfully established, success rate: 100% (16/16). All procedures were completed without intraoperative complications, and postoperative wound healing was favorable. Compared with the control group, the experimental group showed no statistically significant difference in EMR operation time[M (Q1, Q3)] [344 (330, 388) vs 372 (330, 422) s, P>0.05]. Both the instrument transfer time [upper endoscopy: 9 (8, 9) vs 10 (8, 13) s; colonoscopy: 8 (8, 9) vs 11 (10, 13) s, all P<0.05] and the biopsy operation time [upper endoscopy: 67 (53, 79) vs 79 (73, 87) s; colonoscopy: 64 (51, 72) vs 77 (71, 81) s, all P<0.05] were significantly shorter in the experimental group, compared to the control group. Furthermore, the incidence of risky maneuvers was significantly lower than that of the control group [43% (100/233) vs 0, P<0.05]. Conclusion: The ERA system is safe and effective for treating gastrointestinal polyps in beagle dogs.