三种不同胰肠吻合术可靠性比较的实验研究

目的观察3种不同胰肠吻合术的愈合过程,比较其吻合口的可靠性。方法按吻合术式的不同,将54只实验家猪分为3组：套入式胰肠端端吻合组(套入组)、捆绑式胰肠吻合组(捆绑组)和“墨池”式胰肠吻合组(“墨池”组),分别于术中、术后5 d、术后10 d测定吻合口爆破压和离断力,吻合口周围组织做病理检查。结果(1)爆破压：套入组术中、术后5 d、术后10 d分别为(67±8)、(96±11)、(131±9)mm Hg(1 mm Hg=0．133 kPa);捆绑组分别为(140±8)、(179±10)、(269±13)mm Hg;“墨池”组分别为(102±10)、(171±18)、(254±24)mm Hg。捆绑组和“墨池”组较套人组在术中及术后5、10 d的爆破压均有明显增加(P<0．01);捆绑组较“墨池”组术中爆破压高(P<0．05),但在术后5、10 d捆绑组爆破压与“墨池”组比较差异无统计学意义。(2)离断力：套入组术中及术后5、10 d分别为(4．6±0．6)、(5．8±0．5)、(7．1±0．6)N;捆绑组分别为(4．5±0．4)、(6．6±0．4)、(10．0±0．6)N;“墨池”组分别为(4．6±0．3)、(6．5±0．4)、(9．1±0．9)N;3组两两比较术中离断力基本相同;术后5、10 d时捆绑组和“墨池”组基本相同,均明显高于套入组(P<0．01)。(3)组织病理学：捆绑、“墨池”组在术后10 d时吻合口均已基本由结缔组织修复,胰腺残端断面已基本由黏膜上皮覆盖。而套入组则由肉芽组织不完全修复,胰腺残端断面尚无上皮再生。结论捆绑式胰肠吻合口愈合强度高、速度快。“墨池”式胰肠吻合口愈合速度也较快,但抗离断力方面不如捆绑式。套入式吻合口可靠性在3种胰肠吻合术式中最差,具有较大的胰漏风险。     

黑斑息肉综合征错构瘤β-catenin、p53、增殖细胞核抗原表达及临床意义

目的　研究黑斑息肉综合征 (PJS)错构瘤中 β catenin、p5 3、PCNA表达及在发病和癌变中的意义。　方法　 18例PJS 2 9枚错构瘤 ,9例结肠癌 ,10例直肠癌和 10例正常大肠粘膜组织石蜡包埋切片 ,经免疫组织化学LSAB法染色 ,显微镜下观察阳性蛋白表达情况。　结果　正常组织 (N)中β catenin阳性染色主要位于细胞膜 ,未见细胞核染色 ;黑斑息肉组 (Ⅰ ) β catenin异质性表达为 4 1 3 %( 12 / 2 9) ,大肠癌组 (Ⅱ )为 73 7% ( 14 / 19) ,部分细胞核染色阳性 ,细胞质中有 β catenin颗粒状聚集 ,3组间差异均有显著意义 (Ⅰ组与Ⅱ组 χ2 =4 82 5 ,P <0 0 5 )。N组中p5 3表达全部阴性 ,Ⅰ组p5 3阳性率为 2 4 1% ( 7/ 2 9) ,Ⅱ组为 5 7 9% ( 11/ 19) ,3组间差异均有显著意义 (Ⅰ组与Ⅱ组 χ2 =5 5 81,P <0 0 5 )。Ⅰ组、Ⅱ组PCNA指数 (PI)无明显差异 ,但均显著高于N组 (Ⅰ与N组z=- 3 96;Ⅱ与N组z=- 3 3 0 ,P <0 0 5 ) ,3组PI分别为 4 4 5 7± 2 1 15 ,3 2 96± 18 88和 10 5 6± 7 5 1。PCNA阳性细胞主要位于错构瘤腺管下 1/ 3。　结论　错构瘤中多因素作用使细胞增殖活性显著增高。p5 3及 β catenin在错构瘤 腺瘤 腺癌形成过程的早期发挥了作用 ,但可能与在结肠直肠癌中作用机理不同     

后盆腔次全切除术治疗女性低位直肠癌273例

目的探讨在女性低位直肠癌患者中行后盆腔清除术时兼行保肛手术的可能性。方法自 195 4年 1月至 1999年 12月共收治女性直肠癌 10 2 7例 ,其中 718例为低位直肠癌 ,能行根治性切除者 5 70例 ,占 79 4% ,行后盆腔清除术者 2 73例占 47 9%。按不同时期分二组 ,Ⅰ组 195 4～ 1989年 ,低位直肠癌 36 6例 ,行后盆腔清除术者 2 0 6例 ,占 5 6 3% ,其中 2 2例行后盆腔清除低位前切除 (后盆腔次全切除 ,简称次全切除组 ) ,占 10 7%。Ⅱ组 1990～ 1999年 ,低位直肠癌 2 0 4例 ,行后盆腔清除术 6 7例 ,占 32 8% ,其中 2 6例行次全切除 ,占 38 8%。二组病例在病理学类型、组织学分类和病理分期上均无差异。结果总手术死亡率 3 3% ,二组之间无差异 ,分别为 3 4%和 3 0 %。 48例行清扫保肛手术者发生吻合口漏 4例 (8 3% ) ,均发生于Ⅰ组 ,故Ⅰ组吻合口漏发生率高达 18 2 %。全组术后局部复发 13例 ,占 4 8% ,其中Ⅰ组复发 9例 (4 4% ) ,Ⅱ组 4例 (6 0 % ) ,P >0 0 5。 13例均复发于盆腔 ,无吻合口复发。Ⅰ组 5年生存率 (5 3 2± 1 9) % ,Ⅱ组 (6 7 3± 1 6 ) % ,P <0 0 5。结论女性低位直肠癌患者在行后盆腔清除时 ,对合适的病例兼行保肛手术不但可行 ,而且不会增加局部复发率。Ⅱ组 5年生存率的提高则是我们     

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目的　探讨高脂血症性重症急性胰腺炎 (HL SAP)的规范化治疗方案。方法　将 2 0 0 0～ 2 0 0 3年 32例重症急性胰腺炎病人 ,分为重症胰腺炎组 (SAP ,2 2例 )和暴发性胰腺炎组 (FSAP ,10例 )。除常规治疗措施外 ,均加用“五联疗法”[血液净化 (血脂吸附与血液滤过 )、降血脂药物、低分子量肝素、胰岛素、全腹皮硝外敷 ]。测定血液净化前 (PF)、结束 (AFE)和发病后 7d(AF7)的甘油三酯、促炎及抗炎细胞因子和APACHEⅡ评分 ,且评估预后。结果　血液净化结束和发病后 7d ,31例病人血清甘油三酯和TNFα及APACHEⅡ评分较血液净化前显著降低 ,P <0 0 5 ;而IL 10浓度在血滤结束时显著升高 (P <0 0 0 1) ,发病后 7d则显著降低 (P <0 0 5 )。SAP组和FSAP组的第一次手术的时间、手术次数分别为 (5 5 8± 4 2 6 )dvs(12 2± 6 6 )d(P =0 0 2 ) ;(1 33± 0 5 )次vs(3 5± 1 2 )次 (P =0 0 0 37)。SAP组和FSAP组的非手术治愈率、假性囊肿吸收率及住院天数和存活率分别为10 0 % (2 2 / 2 2 )vs 11 1% (1/ 9) ;77 3% (17/ 2 2 )vs 11 1% (1/ 9) ;(5 4 2± 35 9)dvs(99 1± 4 9 5 )d(P =0 0 0 8) ;10 0 % (2 2 / 2 2 )vs 6 6 7% (6 / 9) (P =0 0 0 4 4 )。SAP组假性囊肿吸收时间 (135 1± 137 5 )d。结论     

罗比卡因颈丛阻滞的临床观察

本文观察使用 0 2 %罗比卡因行一针法颈丛阻滞 ,并与0 375 %布比卡因比较 ,探讨低浓度罗比卡因用于颈丛阻滞的可行性。资料与方法一般资料　ＡＳＡⅠ～Ⅱ级 ,30例甲状腺腺瘤患者 ,随机分为两组。Ⅰ组罗比卡因 (ｎ =15 ) ,男 4例 ,女 11例 ,年龄32 6± 8 6 7岁 ,体重 5 9 3± 7 5 4ｋｇ ;Ⅱ组布比卡因 (ｎ =15 ) ,男 5例 ,女 10例 ,年龄 34 2± 7 5 3岁 ,体重 5 7 2± 8 31ｋｇ。麻醉方法　采用一点法颈丛阻滞 ,在Ｃ4 横突部位穿刺 ,患侧阻滞深、浅丛 ,对侧阻滞浅丛。Ⅰ组用 0 2 %罗比卡因 ,Ⅱ组用 0 375 %布比卡因 ,深丛注药 4ｍｌ,双…     

可降解壳聚糖血管外周支持与静脉移植物早期结构的变化

目的　探讨可降解壳聚糖血管外周支持 (CES)对静脉移植物 (VG)早期结构变化的影响 ,为临床提高VG通畅率提供新的治疗方法。　方法　将兔右颈内静脉端 端吻合于同侧颈总动脉建立静脉移植模型 ,以有无CES干预分为支架组与无支架组 (每组 2 4只兔 )。术后 1、2、4周分别切除移植静脉 ,计算机图像分析系统测量和计算内膜、中膜厚度和面积 ,免疫组织化学法检测增殖细胞核抗原 (PCNA)指数观察平滑肌细胞增殖程度。　结果　CES在术后 2周开始降解。支架组VG ,术后 1～ 2周内膜、中膜的厚度和面积、PCNA指数在术后 1周轻度增加 ,1～ 2周维持稳定 ,术后 2周分别为(2 6 3± 3 7) μm、(2 6 0± 1 9) μm、(0 5 6± 0 0 8)mm2 、(0 34± 0 0 5 )mm2 与 (11 5± 2 1) % ,明显低于无支架组的 (5 6 4± 9 4 ) μm、(47 6± 4 9) μm、(1 17± 0 0 8)mm2 、(1 2 0± 0 4 3)mm2 与 (36 6± 2 9) % (P <0 0 1) ;术后 4周虽然又增加 ,分别为 (31 7± 1 6 ) μm、(31 7± 1 6 ) μm、(0 72± 0 12 )mm2 、(0 4 2± 0 0 6 )mm2 与 (13 4± 1 2 ) % ,但仍低于无支架组的 (76 8± 8 0 ) μm、(5 7 4± 9 5 ) μm、(1 2 7± 0 17)mm2 、(1 2 7± 0 0 9)mm2 与 (16 8± 2 2 ) % (P <0 0 5 )。结论　CES     

非体外循环下行双向格林手术(附58例报道)

目的　总结非体外循环下行双向格林手术的体会。方法　 2 0 0 0年 5月至 2 0 0 1年 9月 ,在非体外循环下行双向格林手术 5 8例。年龄 (3 5 4± 1 5 9)岁 ,体重 (13 6± 4 0 )kg。上腔静脉与右心耳插管临时转流 ,自上腔静脉入右房处横断上腔静脉 ,缝闭近心端 ,应用可吸收线端侧吻合远心端与右肺动脉 ,前壁用自体心包片加宽。结果　全组无手术死亡 ,术后并发乳糜胸 4例 ,一过性昏迷 1例。腔静脉阻断 (48± 15 )min ,术前氧饱和度 0 75± 0 0 9,肺动脉压 (12 8± 2 3)mmHg(1mmHg=0 133kPa) ;术毕氧饱和度 0 93± 0 0 5 ,肺动脉压 (16 5± 2 9)mmHg,胸腔及心包引流液 (145± 10 3)ml,呼吸机辅助 (13± 7)h ,住院 (10± 5 )d。结论　非体外循环下行双向格林手术是一种安全、可靠的术式。对于难以解剖根治或一期生理矫治的肺血少的复杂先天性心脏病 ,该术式是一种良好的手术方法。     

胰头癌内引流术式选择与术后生活质量比较分析

目的　探讨胰头癌内引流术式选择对术后生活质量的影响。方法　对 10年中经病理或临床证实的 179例引流术治疗的胰头癌病人临床资料进行比较分析。以手术死亡率、术后胆管炎发生率和生存期作为判断标准。结果　手术死亡率 8 9% ,胆肠吻合术组 (9 0 % )和胆肠加胃肠吻合术组 (9 8% )显著低于外引流术组 (16 7% ;P <0 0 5 ) ;而术后复发性黄疸和胆管炎发生率胆肠吻合术组 (30 6 % )和胆肠加胃肠吻合术组 (15 6 % )亦显著低于外引流术组 (5 8 3% ;P <0 0 5或P <0 0 1) ;术后生存期胆肠吻合术组 (9 0 8± 1 2 1个月 )和胆肠吻合加胃空肠吻合术组 (9 78± 1 2 6个月 )显著长于外引流术组 (7 6 2± 1 0 7个月 ) (P <0 0 5或P <0 0 1)。未行胃肠吻合术各组术后十二指肠梗阻发生率在 32 7%以上。结论　胰头癌内引流术式应尽量选择胆肠吻合内引流加胃肠吻合术 ,预防性胃空肠吻合术并不增加手术死亡率 ,可明显延长病人生存期。     

吸入一氧化氮在双向腔肺动脉吻合术后的应用

目的　评价吸入一氧化氮 (NO)对双向腔肺动脉吻合 (BCPS)术后肺血流灌注不足病儿的作用。方法　 2 0例病儿吸入NO 2 5～ 15 0百万分之一体积 (ppm) ,定时记录各项血流动力学和呼吸功能指标 ,定期监测二氧化氮 (NO2 )、高铁血红蛋白 (MetHb)含量。结果　吸入NO后 ,中心静脉压从( 2 1 4±4 8)mmHg( 1mmHg =0 133kPa)降至 ( 15 3± 5 9)mmHg,跨肺压从 ( 16 2± 5 3)mmHg降至( 8 8± 4 2 )mmHg ,肺泡 -动脉氧分压差从 ( 391 7± 15 1 9)mmHg降至 ( 2 94 0± 312 5 )mmHg ,呼吸指数从 11 3± 5 3降至 6 8± 3 0 (P <0 0 1) ;动脉血氧饱和度从 0 78± 0 14升至 0 84± 0 9,动脉血氧分压与吸入氧浓度之比从 ( 6 7 0± 30 1)mmHg升至 ( 88 8± 2 6 1)mmHg(P <0 0 1)。吸入NO期间 ,NO2 和MetHb含量分别为 ( 0 1± 0 2 )ppm和 ( 1 2± 0 4) %,均在安全范围内。结论　一氧化氮作为一种选择性肺血管扩张剂 ,用于双向腔肺动脉吻合术后肺血管阻力暂时性增高的病儿 ,可改善其肺血流灌注和氧合功能 ,无明显毒副作用。     

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目的　探讨继发性腹膜炎 (SP)急诊手术围手术期液体正平衡与APACHEⅡ评分的关系。方法　根据APACHEⅡ评分 ,将 4 5 5例SP连续病例分为轻症 (<8分 )、重症 (8～ 19分 )和危重病例 (≥ 2 0分 )三组 ,比较三组病例术前、术日和术后第 1日的液体正平衡量。结果　轻症、重症和危重病例术前的液体正平衡量分别为(10 2 4 6 0± 4 0 2 5 7)mL、(2 2 5 8 5 8± 84 4 6 9)mL和 (3392 6 7± 983 31)mL(P <0 0 1) ;术日液体正平衡量分别为 (2 0 0 1 4 0± 716 6 4 )mL、(394 8 2 5± 10 2 4 0 4 )mL和 (5 6 4 1 6 7± 12 4 3 87)mL(P <0 0 1) ;术后第 1日液体正平衡量分别为 (814 5 8± 5 4 7 2 8)mL、(110 9 11± 6 6 7 5 1)mL和 (14 84 78± 72 1 0 4 )mL(P <0 0 1)。结论　无论是术前、术日或术后第 1日 ,SP病例的液体正平衡量与其APACHEⅡ评分正相关。可根据APACHEⅡ评分估测SP病例的液体正平衡量 ,指导其围手术期的液体治疗。     

A new technique of polypropylene mesh-reinforced pancreaticojejunostomy

Anastomotic leakage of pancreaticojejunostomy is a common problem and a significant cause of morbidity and mortality after pancreatic resection. An appropriate technique to minimize pancreatic leakage is very important. Recently we have performed a safe and simple mesh-reinforced pancreaticojejunostomy, by which a strip of polypropylene mesh is wrapped around the pancreatic stump in order to secure the end-to-end pancreaticojejunal anastomosis. No leakage developed in all 10 patients who received this procedure.     

Comparison of anastomotic suturing techniques in the rat esophagus.

BACKGROUND: Long-gap esophageal atresia continues to be a challenging pediatric thoracic surgical problem. Despite the use of various tension relieving procedures, the esophageal anastomosis is often performed under considerable tension. Excessive tension can cause anastomotic sutures to pull through the esophageal tissue, with resultant early esophageal anastomotic dehiscence. To test the hypothesis that interrupted horizontal mattress sutures would withstand the forces of tension better than interrupted simple sutures, an experimental study of rat esophageal anastomoses was done. METHODS: Twenty rats were killed and their esophagi were excised. The esophagi were divided in the mid portion and end-to-end anastomoses were done using interrupted 6-0 polypropylene sutures. Ten rats had anastomoses done with interrupted simple sutures and ten had interrupted horizontal mattress suturing. Anastomotic breaking strength was tested in a tensiometer. RESULTS: Anastomotic breaking strength was 3.22+/-0.56 N for the interrupted simple sutured anastomoses and 3.51+/-0.61 N for the interrupted horizontal mattress group (p=0.30). The difference was not significant. CONCLUSIONS: In this animal study interrupted simple and horizontal mattress suturing withstood the disruptive forces of anastomotic tension equally well.     

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.     

Modified Technique of Pancreaticojejunal Anastomosis with Invagination Following Pancreaticoduodenectomy: A Cohort Study

BACKGROUND: Leakage from pancreatic anastomoses remains the single most important morbidity after pancreaticoduodenectomy and contributes to prolonged hospitalization and mortality. This observational cohort study reported the surgical outcome of a modified invagination technique of pancreaticojejunostomy after pancreaticoduodenectomy. METHODS: Between December 2001 and December 2007, a total of 52 consecutive patients underwent elective pancreaticoduodenectomy for benign or malignant pathologies of the pancreas or the periampullary region in a tertiary referral center. All patients underwent our modified invagination technique of pancreaticojejunostomy regardless of the characteristics of the pancreatic stump. Data were collected prospectively. RESULTS: The mean hospital stay was 12.6 +/- 3.2 days. The incidence of overall surgical complications was 9.6%. No patient developed pancreatic fistula. One patient (1.9%) died of respiratory failure on postoperative day 7. CONCLUSIONS: We reported our pancreaticojejunostomy anastomosis technique with a pancreatic fistula rate of 0% and low intra-abdominal complication rate. The favorable results of this technique warrant further investigation in large prospective cohort studies and prospective randomized controlled studies.     

改良套人式胰肠端端吻合对胰十二指肠切除术后胰瘘的影响

目的探讨改良套入式胰肠端端吻合对胰十二指肠切除术后胰瘘的影响。方法回顾性分析2001年1月至2011年1月山东省肿瘤医院施行396例胰十二指肠切除术患者的临床资料。根据吻合方式分为2组：改良组235例,经典组161例。两组患者均由同一术者带领的医疗小组完成手术,消化道重建以Child吻合为基本术式。改良组采用改良套入式胰肠端端吻合,经典组采用经典套入式胰肠端端吻合,两组患者在术中及术后的处理均相同。比较两组患者术中出血量、手术时间、术后胰瘘和住院时间。计量资料采用t检验,计数资料采用∥检验,胰瘘的分析采用Fisher确切概率法。结果改良组和经典组患者术中平均出血量、平均手术时间、平均住院时间分别为（383±56）ml、（7．2±1．0）h、（21±3）d和（3814-39）ml、（7．0±0．5）h、（22±5）d,两组比较,差异无统计学意义（t=0．388,1．680,一1．835,P〉0．05）。396例患者均无手术死亡发生,胰瘘总发生率为7．6％（30／396）。改良组患者术后无一例胰瘘发生,经典组患者术后发生胰瘘30例（胰肠吻合口瘘4例、单纯性胰瘘26例）,两组比较,差异有统计学意义（P〈0．05）。经典组中发生胰瘘的患者通过保持引流通畅、使用生长抑素及胃肠外营养等保守治疗后痊愈。结论改良套入式胰肠端端吻合能显著降低胰十二指肠切除术后胰瘘的发生率。     

Superiority of end-to-end versus telescoped bronchial anastomosis in single lung transplantation for pulmonary emphysema

OBJECTIVE: To assess the influence of surgical technique (telescoped versus end-to-end anastomosis) on the incidence of bronchial anastomotic complications in patients who underwent single lung transplantation for pulmonary emphysema. METHODS: Seventy-six adult recipients of single lung transplants for pulmonary emphysema were evaluated for the presence of 3 types of major bronchial anastomotic complications: ischemia, dehiscence, and severe stenosis. Surgical technique, clinical course, and mortality were reviewed retrospectively. RESULTS: The 3 major complications were observed in 11 (34%; ischemia), 8 (25%; dehiscence), and 11 (34%; severe stenosis) of 32 telescoped bronchial anastomoses. In contrast, ischemia, dehiscence, and severe stenosis occurred in only 4 (9%), 1 (2%), and 2 (5%) of 44 end-to-end anastomoses (P =.0087, P =.0034, and P =.0012, respectively). The relative risk of ischemia, dehiscence, and severe stenosis in telescoped anastomoses was 2.1, 2.5, and 2.5, respectively, compared with end-to-end anastomoses. Five (13%) telescoped anastomoses required stent placement as compared with only 2 (5%) end-to-end anastomoses (P =.1244). Early postoperative pneumonia was more common in the telescoped anastomosis group (56%) than in the end-to-end group (32%; P =.0380). There was a trend toward shorter survival in the telescoped anastomosis group (mean survival 1045 +/- 145 days) as compared with the end-to-end group (mean survival 1289 +/- 156 days), but these differences did not achieve statistical significance (P =.2410). CONCLUSIONS: In patients who underwent single lung transplantation for pulmonary emphysema, telescoped anastomoses were associated with a higher incidence of bronchial anastomotic complications than end-to-end anastomoses.     

Improved healing of extraperitoneal intestinal anastomoses in the early phase when surrounded by omentum

BACKGROUND: The extra-anatomical position of a cervical oesophagogastrostomy is a reason for impaired anastomotic healing, but transposition of the omentum that is covered with mesothelial cells may be a way to improve that. METHOD: This hypothesis was tested in a rat model. An end-to-end jejuno-jejunostomy was placed subcutaneously in group I (n = 29), subcutaneously surrounded by omentum in group II (n = 29) and intra-abdominally surrounded by omentum in group III (n = 20). After 3, 7 or 14 days, the rats were sacrificed and bursting pressure (BP) of the anastomosis or jejunum was measured and the hydroxyproline (HP) level was determined. RESULTS: In group I 5/29, in group II 2/29 and in group III 0/20 rats died following anastomotic leakage (nonsignificant) and were excluded from other measurements. BP was decreased after 3 days in group I (60+/-9 mm Hg) compared with group II (101+/-8 mm Hg) and group III (107+/-11 mm Hg) (p = 0.002). After 7 days, BP in groups I (122+/-10 mm Hg) and II (132+/-10 mm Hg) were lower as compared with group III (230+/-8 mm Hg) (p<0.001). Differences in HP levels were not statistically significant between the groups after 3, 7 and 14 days. CONCLUSION: The healing of intestinal anastomoses in an extraperitoneal position is improved in the early phase only when surrounded by omentum.     

Conventional versus binding pancreaticojejunostomy after pancreaticoduodenectomy: a prospective randomized trial

OBJECTIVE: This study compared the postoperative pancreatic anastomosis leakage rate of a new binding technique with the conventional technique of pancreaticojejunostomy after pancreaticoduodenectomy. SUMMARY BACKGROUND DATA: Leakage from pancreatic anastomoses remains the single most important morbidity after pancreaticoduodenectomy and contributes to prolonged hospitalization and mortality. The reported incidence after conventional pancreaticojejunostomy ranged from 10% to 29%. We previously reported a new binding pancreaticojejunostomy technique with a leakage of 0%. METHODS: We conducted a prospective randomized study on 217 patients who underwent pancreaticoduodenectomy for benign and malignant diseases of the pancreatic head and the periampullary region comparing the 2 techniques of pancreaticojejunostomy. RESULTS: Of the 111 patients randomized to the conventional group, pancreaticojejunostomy leakage occurred in 8 patients, while no patient in the 106 patients randomized to the binding group developed leakage (chi test, P = 0.014). The overall postoperative complications developed in 41 patients (36.9%) in the conventional group compared with 26 patients (24.5%) in the binding group (chi test, P = 0.048). Seven patients (6.3%) died in the perioperative period in the conventional group compared with 3 patients (2.8%) in the binding group (chi test, P = 0.37). The postoperative hospital stay (mean +/- SD) for the conventional group was 22.4 +/- 10.9 days, which was significantly longer than the binding group (18.4 +/- 4.7 days) (Mann-Whitney U test, P < 0.001). CONCLUSIONS: Binding pancreaticojejunostomy after panceaticoduodenectomy significantly decreased postoperative complication and pancreaticojejunostomy leakage rates and shortened hospital stay when compared with conventional pancreaticojejunostomy.     

Low dose ASA (4 mg/kg) peroperatively does not prevent in vivo platelet accumulation at microarterial anastomotic sites. An experimental study in the rabbit

Twenty microarterial end-to-end anastomoses were performed on the central arteries of the ears in 12 rabbits divided into two groups: Group A (10 anastomoses) served as control and Group B (10 anastomoses) was treated with 4 mg ASA per kg b.w. given as a single intraaortical dose 5 min prior to infusion of 32P-labelled platelets. Two hours later blood-flow was reestablished after end-to-end anastomoses. Anastomotic bleeding-times, qualitative and quantitative differences in platelet accumulation and patency were registered. In addition, platelet aggregability and thromboxane production were studied in 3 rabbits. The bleeding-times (median and quartiles) in group A were 3(+0)-2 min and in group B 3(+2)-0 min. In vivo accumulation of 32P-labelled platelets was somewhat increased initially (p less than 0.05) in the ASA group. Poor patency was registered in two vessels, one in each group, all other vessels having good patency. Aspirin peroperatively in low doses (4 mg/kg) did not markedly affect bleeding-times or patency rates in microarterial anastomoses, but platelet accumulation in vivo was initially increased. The radioactivity values decreased with time in all aspirin cases but only in 50% of the control group vessels, suggesting efficient platelet disaggregation/fibrinolysis. This might favour the view that PGI2 production in the endothelium recovers more rapidly than the pro-aggregatory mechanisms affected by ASA. ASA-treatment led to almost complete inhibition of thromboxane production for at least four hours, but, despite this, a moderate decrease in platelet aggregability occurred only when collagen was used as stimulant.