关键词: 肠息肉, 机械切除, 高频电切除, 临床效果

Abstract:

Objective To compare the clinical effects of mechanical resection and high-frequency electrocautery resection in patients with 6-15 mm sessile colorectal polyps. Methods A total of 120 patients with 6-15 mm sessile colorectal polyps treated at our hospital from January 2023 to December 2024 were randomly assigned (random number table) to either a mechanical resection group using the cold snare technique or a high-frequency electrocautery resection group using the hot snare technique (n=60 each). Surgical outcomes, perioperative recovery metrics, serum gastrointestinal function markers, and complication rates were compared between groups. Results The mechanical resection group achieved a significantly higher cecal intubation rate and a significantly lower proportion of cumulative submucosal injury than the high-frequency electrocautery group (both P<0.05). The proportions of polyp recovery and polyp en bloc resection, and the total resection rate were comparable between the two groups ( all P>0.05).Operative time, time to first postoperative flatus, length of hospital stay, time to first postoperative bowel movement, and intraoperative blood loss were significantly lower in the mechanical resection group (all P<0.05). There was no significant difference in preoperative gastrointestinal function between groups (P>0.05). At postoperative day 3, serum levels of intestinal fatty acid-binding protein (I-FABP), vasoactive intestinal peptide (VIP), and diamine oxidase (DAO) were significantly lower in the mechanical resection group than in the high-frequency electrocautery group (all P<0.05). The overall incidence of complications was significantly lower with mechanical resection (P<0.05). Conclusion Both mechanical resection (cold snare) and high-frequency electrocautery resection (hot snare) provide effective treatment for 6-15 mm sessile colorectal polyps. However, mechanical resection demonstrates overall superiority in procedural performance, tissue safety, recovery, and complication profile, and may be recommended as the first-line technique for this population.

Key words: rectal polyp, mechanical cold snare polypectomy, high-frequency electrosurgical hot snare polypectomy, clinical effects