Abstract: Application of omental flap technique in laparoscopic pancreaticoduodenectomy        MENG Si-jia*, LI Shao-dong, MOU yi-ping, et al.*Bengbu Medical College,Bengbu 233030, China
Corresponding author：MOU Yi-ping，E-mail：yipingmou@126.com
Abstract    Objective    To investigate the clinical efficacy of performing the omental flap technique during laparoscopic pancreaticoduodenectomy (LPD). Methods    The clinical data of 298 patients who performed LPD in the Gastroenteropancreatic Surgery Department of Zhejiang Provincial People's Hospital between May 2015 and January 2021 were collected and analyzed retrospectively. The patients were divided into the omental group (171 cases) and control group (127 cases) based on the application of the omental flap technique or not. And the perioperative outcomes were compared between these two groups, moreover, univariate and multivariate analysis on delayed postoperative hemorrhage(POPH) was performed to conclude. Results    The overall postoperative complication rate(28.1% vs. 44.1%) and severe complications (Clavien-Dindo≥Ⅲ,7.6% vs.15.7%) were much lower in the omental group than that of the control group (P<0.05). B and C grade pancreatic leakage［8 cases(4.7%)vs.18 cases(14.0%)］ and delayed POPH［9 cases(5.3%)vs.16 cases(12.6%)］ in the omental group than that of the control group (P<0.05). Univariate analysis revealed that benign or malignant pathology, pancreatic texture, the diameter of pancreatic duct, and omental flap technique increased the risk of POPH. Furthermore, multivariate analysis indicated that the application of omental flap technique played as an independent protective factor of delayed POPH (P<0.05). Conclusion    The omental flap technique can reduce the overall complication rate after LPD, especially for the serious complications. And it may be a protective factor for delayed POPH.

Key words: omental flap, laparoscopic pancreaticoduodenectomy, pancreatic fistula, hemorrhage

摘要： 目的    总结腹腔镜胰十二指肠切除术（LPD）中应用网膜垫技术的临床疗效。方法    回顾性分析2015年5月至2021年1月浙江省人民医院胃肠胰腺外科行LPD 298例病人临床资料。根据是否使用网膜垫技术分为网膜垫组（171例）和对照组（127例），比较两组术后主要并发症发生率，并对术后迟发性出血进行单因素及多因素分析。结果    网膜垫组术后总体并发症发生率（28.1% vs. 44.1%），术后严重并发症（Clavien-Dindo分级≥Ⅲ级，7.6% vs. 15.7%）发生率均低于对照组（P＜0.05）。且网膜垫组并发B、C级胰漏8例（4.7%），术后迟发性出血9例（5.3%），均显著低于对照组的18例（14.0%）、16例（12.6%）（P＜0.05）。单因素分析显示疾病良恶性、胰腺质地、胰管直径和网膜垫技术与LPD术后迟发性出血的发生相关。多因素分析提示，应用网膜垫技术是LPD术后迟发性出血的独立因素（P＜0.05）。结论    网膜垫技术可降低LPD术后总并发症发生率，尤其降低术后严重并发症发生，可能是LPD术后迟发性出血的保护因素。

关键词: 大网膜, 腹腔镜胰十二指肠切除术, 胰漏, 出血