胰十二指肠切除术后胃排空障碍的诊疗进展

目的总结胰十二指肠切除术(PD)后胃排空障碍诊疗的现状与进展。方法检索近年来国内外有关PD后胃排空障碍的相关研究文献并进行综述。结果目前胃排空障碍的病因及发病机制尚未完全阐明,与手术创伤、患者高龄、合并糖尿病、伴有其他腹部并发症等多种高危因素有关。保留幽门PD并不增加术后胃排空障碍的风险,而幽门环切除、结肠前吻合、Braun吻合、微创手术对降低其发生是有利的。胃排空障碍的治疗目前国内外仍无明显进展,但绝大多数患者可通过对症保守治疗获得痊愈。结论 PD后胃排空障碍应以预防为主,围术期应用术后加速康复策略可能是目前临床解决术后胃排空障碍的关键所在,但需进一步研究。     

加速康复外科理念在胰十二指肠切除术围手术期的应用

目的 观察加速康复外科（enhanced recovery after surgery,ERAS）措施在胰十二指肠切除术围手术期应用的效果,总结在ERAS指导下的围手术期多模式镇痛、营养干预、呼吸道管理、血栓预防等护理措施对患者术后康复的影响。方法 回顾性分析温州医科大学附属第一医院2019年5月到2020年7月肝胆外科收治的48例行胰十二指肠切除术患者的临床资料。其中围手术期采用传统管理模式21例（传统组）,采用加速康复外科管理模式27例（ERAS组）,护理上传统组采用普外科常规护理方法,ERAS组患者实施护患共享决策健康教育、围手术期营养管理、多模式镇痛、制定呼吸功能锻炼及早期活动计划等护理方法,比较两组患者术后恢复和并发症情况。结果 ERAS组相比传统组术后首次排便时间[（3.3±1.4）d vs（6.3±2.4）d,P＜0.05]、胃管拔除时间[（4.3±1.2）d vs（10.6±4.9）d,P＜0.05]、第一次肠内营养时间[（3.8±1.0）d vs（10.0±4.7）d,P＜0.05]更早,术后发热时间[（4.5±2.2）d vs（7.9±4.8）d,P＜0.05]、术后使用抗生素时间[（10.6±3.3）d vs（20.0±6.6）d,P＜0.05]、住院时间[（18.4±2.0）d vs（31.1±3.7）d,P＜0.05]更短,住院费用更低[（9.57±1.47）万元 vs（15.12±2.83）万元,P＜0.05]。ERAS组术后肺部感染发生率[7.4%（2/27）vs 33.3%（7/21）,P＜0.05]和深静脉血栓发生率[3.7%（1/27）vs 23.8%（5/21）,P＜0.05]更低,差异均具有统计学意义。结论 加速康复外科措施应用于胰十二指肠切除术围手术期管理显著缩短了患者住院时间,减少了医疗费用,降低了术后并发症（肺部感染、深静脉血栓、胃排空障碍）的发生率,实施过程中不断优化围手术期营养管理、疼痛管理、呼吸功能锻炼、深静脉血栓预防等护理措施,并促进了护患关系和谐。     

胰十二指肠切除术的技术改进

目的 探讨改进胰十二指肠切除术,预防术后并发症,提高手术疗效的方法。方法 采用保留幽门、胰管空肠粘膜吻合＋胰肠遮盖套入式吻合、胰管支撑外流充分切除胰钩突的术式,并观察其疗效。结果 全组未发生胰瘘及胰断面出血。保留幽门胰十二批肠切除术（ＰＰＰＤ）者有１例术后发生胃潴留,其余胃排空正常。结论 ＰＰＰＤ只要操作得当,可避免术后胃潴留。胰肠遮盖套入式吻合操作简便,可防止术后胰瘘、胰断面出血等并发症。     

Preservation of the pylorus during pancreaticoduodenectomy —Evolution and current indications

The Whipple procedure has been improved by preservation of afunctioning pylorus. A functioning pylorus is important because marginal ulceration is avoided and, compared to the standard Whipple procedure with hemigastrectomy, more patients can gain weight postoperatively. The most common indications for this procedure are severe complication of chronic pancreatitis and periampullary tumors. In patients with pancreatic adenocarcinoma, the pylorus-preserving variety results in equal or better survival rates than those of the standard Whipple procedure with hemigastrectomy. Surgery alone is not sufficient to improve survival rates in patients with adenocarcinoma of the pancreas. Improved imaging modalities are required to diagnose the disease earlier. The most likely combination of treatment to prolong survival time is a combination of resection for cure in a patient with an early diagnosis plus an aggressive adjuvant chemoradiotherapy protocol. This protocol is most likely to be completed if a patient has preserved endocrine, exocrine, and digestive ability. A radical (R1) pylorus-preserving Whipple procedure would have the following advantages to result in the best survival rates — the patients can gain weight and thereby withstand the chemoradiotherapy protocol while, at the same time, the weakest aspect of the radical resection is addressed, i.e., the retroperitoneal margin of the pancreatic head.     

十二指肠肿瘤的诊断及手术方法的探讨--附12例临床分析

手术治疗十二指肠肿瘤患者 12例 ,术前分别行B超、螺旋CT、钡剂造影、内镜检查 ;术中行常规冷冻病理切片检查 ;确诊良性肿瘤 8例 ,恶性 4例。除降部 3例恶性肿瘤行传统胰十二指肠切除术外 ,其余病例行十二指肠节段性切除。结果 :B超、钡剂造影、螺旋CT、内镜检出率分别为 5 / 7、81 8% ( 9/ 11)、8/ 9及 83 3 % ( 10 / 12 ) ;十二指肠节段切除手术平均时间 2 5h ( 1 5～ 4h) ,胰十二指肠切除术平均 5 5h( 4 5～ 6 5h)。所有病例术后恢复良好 ,无手术并发症出现。平均住院时间 18d( 12～ 2 3d)。随访时间 3 0 ( 3～ 48)个月 ,无肿瘤复发。回顾分析结果显示 ,螺旋CT在诊断十二指肠肿瘤方面具有优势 ,十二指肠降段及水平段良性或低度恶性肿瘤行十二指肠节段切除安全简便 ,切实可行     

Superior mesenteric artery first approach versus standard pancreaticoduodenectomy:a systematic review and meta-analysis

BACKGROUND: The superior mesenteric artery (SMA) first approach was proposed recently as a new modification of the standard pancreaticoduodenectomy. Increasing evidence showed that a periadventiceal dissection of the SMA with early transection of the inflow during pancreaticoduodenec-tomy associates better early perioperative results, and setup the scene for long-term oncological benefits. The objectives of the current study are to compare the operative results and long-term oncological outcomes of SMA first approach pan-creaticoduodenectomy (SMA-PD) with standard pancreatico-duodenectomy (S-PD).DATA SOURCES: Electronic search of the PubMed/MEDLINE, EMBASE, Web of Science and Cochrane Library was performed until July 2015. We considered randomized controlled trials (RCTs) and non-randomized comparative studies (NRCSs) comparing SMA-PD with S-PD to be eligible if they included patients with periampullary cancers.RESULTS: A total of one RCT and thirteen NRCSs met the in-clusion criteria, involving 640 patients with SMA-PD and 514 patients with S-PD. The SMA-PD was associated with less in-traoperative bleeding, less blood transfusions and higher rate of associated venous resections. The pancreatic fistula and delayed gastric emptying had a significantly lower rate in the SMA-PD group. There were no differences between the two approaches regarding overall complications, major complica-tion rates and in-hospital mortality. There was no difference regarding R0 resection rate, and one-, two- or three-year over-all survival. The SMA-PD was associated with a lower local, hepatic and extrahepatic metastatic rate.CONCLUSIONS: The SMA-PD is associated with better perioperative outcomes, such as blood loss, transfusion re-quirements, pancreatic fistula, and delayed gastric emptying. Although the one-, two- or three-year overall survival rate is not superior, the SMA-PD has a lower local and metastatic re-currence rate.     

Paraaortic dissection in “total mesopancreas excision” and “mesopancreas-first resection” pancreaticoduodenectomies for pancreatic cancer: Useless,optional, or necessary?A systematic review

The mesopancreas does not have well-defined boundaries but is continuous and connected through its components with the paraaortic area. The mesopancreatic resection margin has been indicated as the primary site for R1 resection after PD in pancreatic head cancer and total mesopancreas excision has been proposed to achieve adequate retropancreatic margin clearance and to minimize the likelihood of R1 resection. However, the anatomy of the mesopancreas requires extended dissection of the paraaortic area to maximize posterior clearance. The artery-first surgical approach has been developed to increase local radicality at the mesopancreatic resection margin. During PD, the artery-first approach begins with dissection of the connective tissues around the SMA. However, the concept of the mesopancreas as a boundless structure that includes circumferential tissues around the SMA, SMV, and paraaortic tissue highlights the need to shift from artery-first PD to mesopancreas-first PD to reduce the risk of R1 resection. From this perspective the “artery-first” approach, which allows for the avoidance of R2 resection risk, should be integrated into the “mesopancreas-first” approach to improve the R0 resection rate.In total mesopancreas excision and mesopancreas-first pancreaticoduodenectomies, the inclusion of the paraaortic area and circumferential area around the SMA in the resection field is necessary to control the tumour spread along the mesopancreatic resection margin rather than to control or stage the spread in the nodal basin.