Telescopic technique associated with mucosectomy: a simple and safe anastomosis in pancreaticoduodenectomy

Pancreatic fistula remains a common problem and a main cause of morbidity and mortality after pancreaticoduodenectomy (PD). We have developed a safe and simple method of pancreaticojejunostomy in 33 patients, in whom approximately 3 cm of jejunal mucosa was cut to improve the adhesion between the loop and pancreatic parenchyma after end-to-end invagination. Furthermore, we have performed a purse-string procedure on 21 patients to secure the jejunum to the intussuscepted pancreatic stump instead of continuous running fashion with double needles of 5-0 monofilament synthetic absorbable sutures. This procedure was proved to be much more expeditious, and only 2 of 33 patients had pancreatic leakages. Therefore, the telescopic technique associated with mucosectomy is an acceptable and safe surgery for pancreaticojejunal anastomosis.     

捆绑式胰管对黏膜吻合术

目的 研究一种与捆绑式胰肠吻合术和捆绑式胰胃吻合术互补的术式--捆绑式胰管对黏膜吻合术的可行性.方法 (1)动物实验:对6只成年新西兰兔行胃肠造瘘术,两个造瘘口分别用导尿管、硅胶管、输液器管作为支撑管连接,导管两端分别置入胃腔与肠腔内,造瘘口荷包缝合,胃壁与肠壁浆膜层拉拢缝合周定.观察胃肠造瘘口处渗漏及愈合情况,显微镜下观察胃黏膜与空肠黏膜愈合情况.(2)临床实践:对7例患者施行捆绑式胰管对黏膜吻合术.手术方法包括:胰端的准备、肠侧的准备、胰断端与空肠对合固定的准备、吻合的实施、最后施行胰断端与空肠的对合固定.术后定期检测腹腔内引流管和血淀粉酶以及各种并发症的情况.胰漏按来源不同分为胰腺实质漏(胰创面漏)和吻合口漏两种.结果 动物实验结果显示愈合良好.临床全部病例均未出现吻合口漏,但有2例腹腔内引流液淀粉酶出现一过性增高,引流量均未超过50 ml/d,未影响患者康复,属于胰腺实质漏(胰腺创面漏).结论 捆绑式胰管对黏膜吻合术是一种简单安全的吻合方法,给外科医生提供了一种新的选择,以便在面对不同的患者时,能够灵活采用不同的方法去取得最理想的治疗效果.

Abstract：

Objective To study the feasibility of binding pancreatic duct to mucosa anastomosis (BDM)-a complementary procedure to both binding pancreaticojejunostomy and binding pancreaticogastrostomy. Methods (1) Animal experimental study: gastrostomy and jejunostomy were performed on six adult New Zealand rabbits. The gastrostomy and jejunostomy shared a same stent (rubber urethral catheter, silicone tube or plastic infusion tube). Both ends of the stent were placed in gastric and enteric cavity. Purse-string suture was performed around the stent before the jejunum and the stomach were brought together for fixation by few stitches. And to observe whether the purse-string suture around a plastic tube,rubber tube or silicon tube inserted into jejunum and/or stomach can prevent leaking out of the jejunal or gastric content to cause peritonitis. (2)Clinically 7 patients were performed with BDM anastomosis. The procedure was consisted of five steps: preparation of the pancreatic stump; preparation of the jejunum;preparation of the fixing sutures between the pancreatic stump and the jejunum; implementation of the anastomosis; lastly, fixation of the jejunum beside the pancreas stump. Post-operative periodic examination of the blood amylase and the amylase in the abdominal drainage. Pancreatic fistula was classified in to two categories: parenchymal fistula (pancreatic cut surface fistula) and anastomotic leakage. Results Animal experiment did not show any leakage around the plastic tube or silicon tube inserted into jejunum and(or) stomach. There was no anastomotic leak in all the patients. There was transient increase of amylase in two cases, but the volume of drainage did not exceed 50 ml/d and the recovery of the patients was not affected.Conclusions BDM is a simple, safe and easy procedure to perform. It provides to the surgeons with a new option in different situations to achieve the most ideal surgical result.     

生物降解吻合环在腹腔镜右半结肠切除术中的应用

目的探讨生物降解吻合环在腹腔镜右半结肠切除术中的应用价值。方法将生物降解吻合环应用于40例腹腔镜右半结肠切除术中,其中手术的消化道重建使用腹腔外吻合环回结肠端端吻合法。结果所有患者手术均获成功,术后未发生吻合口瘘、吻合口出血和狭窄。吻合环均在四周内排出体外。术后半年肠镜检查,2例发生吻合口炎症,半年后随访消失。结论在腹腔镜右半结肠切除术中使用生物降解吻合环具有简便、快捷、安全的优点,可在临床上推广使用。     

以磁吻合技术:迎接微创外科新未来

磁性压迫吻合技术(magnetic compression anastomosis,MCA)是利用永磁材料制成的吻合装置间的引力压迫脏器壁层造成局部缺血坏死而使管腔再通的非手术治疗方法.在血管介入技术的基础上利用磁性吻合技术可以实现腔内动、静脉吻合,显著缩短吻合时间,减少组织器官缺血损伤.MCA在临床上还可用于实现空腔...     

Comparison of the FreeHand® robotic camera holder with human assistants during endoscopic extraperitoneal radical prostatectomy

Study Type – Therapy (case series) Level of Evidence 4 What’s known on the subject? and What does the study add? The use of robotic arms for instrument and camera manipulation has been proposed for more than a decade. The current study provides a direct comparison of robotic camera movement to the conventional human camera holding assistance in real operative room setting.

OBJECTIVE

? To assess, in a prospective randomized study, the efficiency of the FreeHand® (Prosurgics Ltd, Bracknell, UK) compared to manual camera control during the performance of endoscopic extraperitoneal radical prostatectomy (EERPE).

PATIENTS AND METHODS

? Three surgeons performed 50 EERPE for localized prostate cancer. In group A (n= 25), procedures were performed with manual control of the camera by the assistant, whereas group B (n= 25) patients were treated with the assistance of the FreeHand® robotic device. ? The EERPE procedure was divided into several steps. ? Total operation duration, time for each surgical step, number of camera movements, number of movement errors, number of times the lens was cleaned, blood loss and margin status were compared.

RESULTS

? No statistically significant difference was observed in terms of patient age, preoperative prostate‐specific antigen level, Gleason score, positive cores and prostate volume. ? The average operation duration required for the performance of each step did not differ significantly between the two groups. ? Significant differences in favour of the FreeHand® camera holder were observed in case of horizontal and zooming camera movement, camera cleaning and camera errors. ? Vertical camera movements were performed significantly faster by the human assistant compared to the robotic camera holder. ? The average total operation duration was similar for both groups. ? Positive surgical margins were detected in one patient in each group (4% of the patients).

CONCLUSIONS

? A comparison of the FreeHand® robotic camera holder with human camera control during EERPE showed a similar time requirement for the performance of each step of the procedure. ? The robotic system provided accurate and fast movements of the camera without compromising the outcome of the procedure.     

Cuffed anastomosis for above-knee femoropopliteal bypass with a stretch expanded polytetrafluoroethylene graft

PURPOSE: To evaluate the patency and limb-salvage rates associated with cuffed anastomosis in above-knee femoropopliteal (FP) bypasses using prosthetic grafts. METHODS: Between January 1997 and December 2005, 96 patients (99 limbs) underwent above-knee FP bypass grafting for peripheral vascular disease, with disabling claudication in 81%. All grafts were 6-mm, thin-walled, ringed, expanded polytetrafluoroethylene (ePTFE) stretch grafts anastomosed to the above-knee segment of the popliteal artery in an end-to-side fashion, with a protruding area created around the anastomotic toe and an angle of less than 30 degrees between the graft and the artery. Postoperatively, graft patency was monitored by several objective methods. Patency and limb-salvage rates were calculated by actuarial methods and Kaplan-Meier analysis. RESULTS: The mean follow-up period was 40.4 months; 15 patients were lost to follow-up. The 1-, 3-, and 5-year primary graft patency rates were 94.5%, 88.2%, and 85.7%, respectively. The 1-, 3-, and 5-year secondary patency rates were 95.6%, 94.1%, and 90.8%. The 1-, 3-, and 5-year limb-salvage rates were 98.9%, 97.3%, and 97.3%. There were three graft infections. CONCLUSION: The use of a cuffed anastomosis in FP bypass with an ePTFE stretch prosthesis appears to increase graft patency rates.     

Modification of the Bentall operation using the proximal double sewing technique without excision of leaflets

We present a report on reinforcement of the proximal anastomosis during the Bentall operation. The aortic wall was excised with a 5-mm remnant, and aortic valve leaflets were preserved. Interrupted horizontal mattress sutures (2-0 Polyestel) reinforced with pledgets were placed. The composite graft was placed at the intraannular position inside of the preserved leaflets. The aortic valve leaflets were then pasted to the sewing cuff with fibrin glue. A running suture with 4-0 monofilament was placed between the remnant of the aortic wall and the peripheral side of the sewing cuff wrapped with native aortic valve leaflets.     

股前外侧（肌）皮瓣交腿修复胫前大面积软组织缺损

目的寻求一种对胫前区大片软组织缺损修复的手术新方法,降低截肢率.方法对10例胫前严重的开放性损伤伴大面积软组织缺损病例,采用股前外侧(肌)皮瓣交腿血管吻合移植方法,移植皮瓣12×8～28×15cm2,随访6个月-5年.结果除2例,皮瓣边缘部分坏死外,其余8例皆一期愈合,外形、功能满意.结论交腿皮瓣移植术可降低某些小腿严重开放性创伤的伤残率.     

胃癌切除胃肠袢Roux—en—Y瓣式吻合术183例临床观察

目的 胃肠短袢Roux-en-Y瓣式吻合术的抗反流效果,探讨Roux淤积综合征的防治方法。方法 随访986年10月至1997年6月胃癌切除胃空肠短袢Roux-en-Y瓣式吻合术183例,通过症状调查,按改良Visick标准评级,有症状借助消化道钡餐、胃镜并活检、B超、CT检查排除吻合口狭窄、残胃溃疡和肿瘤复发后,确定短袢Roux-en-Y瓣式吻合术的抗反流效果及Roux淤积综合征的发病率。结果 172例（94．0％）获随访结果,5例不满2年因肿瘤复发死亡,3例术后胃瘫,2例因粘连性肠梗阻接受粘连松解术,2例因腹膜广泛种植转移癌致肠梗阻。可进行改良Visick评级165例,Ⅲ、Ⅳ级12例皆为肿瘤复发,未发现有明显症状的反流性胃炎,无倾倒综合症和Roux淤积综合征。结论 扩大胃的切除范围,同时缩短Roux袢的长度,可防治Roux淤积综合征,对空肠空肠吻合口进行抗反渡加工,短袢Roux-en-Y吻合抗反流效果满意。     

Comparison of argon-laser welded and sutured repair of inferior vena cava in a canine model

BACKGROUND AND OBJECTIVE: Advantages of laser-welded microarterial anastomoses have been reported. However, whether laser repair of large veins is advantageous is not yet known. Argon-laser welding of inferior vena cava was therefore compared with conventional-sutured repair. STUDY DESIGN/MATERIALS AND METHODS: Twenty-four adult mongrel dogs were used. Twelve inferior vena cavas were repaired using an argon laser and the rest using continuous sutures. Specimens were removed at 2, 8, 16, and 24 weeks after repair. Technical characteristics, cavographical findings, and results of histopathological study using light and transmission electron microscopy were compared. RESULTS: Procedure time did not significantly differ between the two groups. The sutured repair sites were narrower than those repaired by laser immediately after and at 2 and 24 weeks. Histologically, laser welding resulted from denaturation of collagen and mild healing occurred simultaneously with the disappearance of denatured collagen. By contrast, there was strong fibrotic reaction at sutured repair sites. CONCLUSIONS: These findings suggest that argon-laser repair of large veins is superior to continuous suturing.