ObjectiveTo summarize the prevention and treatment of iatrogenic medial collateral ligament (MCL) injuries in total knee arthroplasty (TKA).MethodsThe relevant literature about iatrogenic MCL injuries in TKA was summarized, and the symptoms, causes, preventions, and treatments were analyzed.ResultsPreventions on the iatrogenic MCL injuries in TKA is significantly promoted. With the occurrence of MCL injuries, the femoral avulsion can be fixed with the screw and washer or the suture anchors; the tibial avulsion can be treated with the suture anchors fixation, bone staples fixation, or conservative treatment; the mid-substance laceration can be repaired directly; the autologous quadriceps tendon, semitendinosus tendon, or artificial ligament can be used for the patients with poor tissue conditions or obvious residual gap between the ligament ends; the use of implant with greater constraint can be the last alternative method.ConclusionNo consensus has been reached to the management of iatrogenic MCL injuries in TKA. Different solutions and strategies can be integrated and adopted flexibly by surgeons according to the specific situation.
Objective The intercellular adhesion (ica) gene of Staphylococcus epidermidis (SE) is a key factor to bacterial aggregation, to analysis the genotype of iatrogenic SE and to explore the effect of iatrogenic SE ica operon on theformation of bacterial biofilm on the surface of polyvinyl chloride (PVC). Methods Fifty-six cl inical isolates of iatrogenic SEwere selected, and PCR and gene sequencing were used to detect the genes related with bacterial biofilm formation. The genes contained 16S rRNA, autolysin (atlE), fibrinogen binding protein (fbe), and icaADB. The bacteria suspension of 1 × 105 cfu/mL iatrogenic SE was prepared; according to the test results of target genes, the PVC material and the genotype of icaADB+, atlE+, fbe+ strains were co-cultivated as the ica positive group; the PVC material and the genotype of icaADB-, atlE+, fbe+ strains were co-cultivated as the ica negative group. The thickness of biofilm and bacterial community quantity unit area on PVC materials were measured by confocal laser scanning microscope, and the surface structure of biofilm formation was observed by scanning electron microscope (SEM) at 6, 12, 18, 24, and 30 hours. Results The positive rate of 16S rRNA of iatrogenic SE strains was 100% (56/56). The genotype of icaADB+, atlE+, and fbe+ strains accounted for 57.1% (32/56). The genotype of icaADB-, atlE+, and fbe+ strains accounted for 37.5% (21/56). The sequencing results showed that the product sequences of 16S rRNA, atlE, fbe, and icaADB were consistent with those in GenBank. With time, no significant bacterial biofilm formed on the surface of PVC in ica operon negative group. But in ica operon positive group, the number of bacterial community was gradually increased, and the volume of bacterial biofilms was gradually increased on the surface of PVC. At 24 hours, mature bacterial biofilm structure formed, and at 30 hours, the volume of bacterial biofilms was tending towards stabil ity. The thickness of biofilm (F=6 714.395, P=0.000) and the bacterial community quantity unit area on PVC materials (F=435.985, P=0.000) in ica operon positive groupwere significantly higher than those in ica operon negative group. Conclusion Iatrogenic SE can be divided into 2 types ofica operon negative and ica operon positive bacteria. The iatrogenic SE ica operon can strengthen bacterium biofilm formation capabil ity on PVC materials, bacterium community quantity, and thickness of biofilm, it plays an important role in bacterium biofilm formation on PVC materials.
目的 探讨腹腔镜下修补医源性结肠穿孔的可行性和手术技巧。方法 回顾性分析我院2007年 10月至2009年12月期间腹腔镜下修补医源性结肠穿孔手术6例患者的临床资料，其中诊断性肠镜检查结肠穿孔2例，治疗性肠镜结肠穿孔4例。结果 6例患者均顺利完成腹腔镜下手术, 无中转开腹。3例患者全腹腔镜下完成结肠穿孔修补，2例因破口较大在腹腔镜辅助下完成结肠穿孔修补，1例乙状结肠癌患者肠镜检查结肠穿孔后同时行腹腔镜下乙状结肠癌根治手术，术后未发生吻合口漏、残余感染等并发症。结论 腹腔镜下修补医源性结肠穿孔安全、可靠，临床效果肯定。
31 cases of iatrogenic cholangic injury reported. 28 cases followed from 9 months to 6 years. iatrogenic cholangic injury is not an uncommon occurence main cases are inregular procedures, and carelessness in this group, only 9 cases were found intraoperatively. The main manifestations after injury were aggravating jaundice and/or bilious peritonitis. Symptoms, signs, B-type ultrsound and sometimes ERCP were used for diagnosis. Once the injury ascertained ends are the best treatment, an alternative Roux-Y Cholangiojejunostomy was also commonly used. In this group, 4 cases received the first methos and all with good results; 23 patients treated by the second methos, 17 were uneventful, 4 experienced more or less abdomenal pain, 2 suffered difinite repeated cholangitis and another 1 died.
Object To evaluate the significance of double common bile duct （DCBD） in hepatobiliary surgery. Metheds The data of diagnosis and treatment of two patients with DCBD in our hospital between Jul. to Dec. 2010 were analyzed retrospective， and the related literatures were reviewed. Results The right hepatic bile duct of DCBD due to mistaking it for cystic duct in 1 case was accidental injuried during laparoscopic cholecystectomy. Another example，the DCBD was confirmed by intraoperative exploration and choledochoscopic examination， at the same time with chole-dochal cyst， anomalous pancreaticobiliary ductal junction （APBDJ）， primary hepatolithus， and choledocholith， and then operation was performed. Two cases were typeⅤb of DCBD. A total of 32 English literatures were reviewed. Since the beginning of 1932 English literature had reported 100 cases of DCBD. The type Ⅱand typeⅢwere the most common type of DCBD， and the typeⅤonly 10 cases. There were 27 cases of DCBD in twenty-five Chinese articles from 1994 to 2012. The typeⅤwas the most common type of DCBD. The accessory common bile duct （ACBD） opening in the duod-enum， gastric， and pancreatic duct were the most common. The common complications included stone， APBDJ， choled-ochal cyst， tumor etc. Conclusions DCBD is a very rare anatomic variation of extrahepatic bile duct， often accompanied by calculus of bile duct and common bile duct cyst， APBDJ， and other biliary anatomy abnormality， and potentially carci-nogenic potential. The existence of DCBD may increase the risk of iatrogenic bile duct injury and complexity of biliary operation. In view of this， this abnormality of extrahepatic duct should be paid with close attention during operation.
ObjectiveTo investigate the natural outcome of spontaneous closure of iatrogenic atrial septal defect (IASD) in patients with atrial fibrillation after transseptal catheterization and the influencing factors affecting its healing.MethodsA total of 122 patients who underwent percutaneous left atrial appendage occlusion in West China Hospital, Sichuan University from September 2014 to February 2018 were selected for observation and follow-up. General information of the patients was collected. Each patient underwent transthoracic echocardiography and transesophageal echocardiography before the surgery or 45 days, 3 months, 6 months and 1 year after the surgery, observing the atrioventricular size, cardiac function and atrial septal defect size. The natural outcome of IASD and influencing factors and prognosis of IASD were analyzed.ResultsThe healing rate increased gradually with the follow-up time; the median healing time was 180 days [95% confidence interval (169.5, 190.5) days]. The difference in the effect on IASD healing rate between the gender and atrial fibrillation type was not significant (P>0.05); being older than 70 years old was the influence factor for the IASD healing rate (P<0.05). There was no statistically difference in right heart size and systolic and diastolic function between the unhealed group (n=18) and the healed group (n=63) after a 1-year follow-up (P>0.05), but the left ventricular size was bigger in the unhealed group than that in the healed group (P<0.05). The follow-up time points had a significant effect on the size of the left atrium, and the left atrium in the healing group after 1 year follow-up was significantly smaller than before. There was no significant difference among the different follow-up time points and no interaction between grouping and follow-up time (P>0.05). ConclusionsWith the extension of follow-up time, the healing rate increases gradually. Larger left atrium and ventricular size and the age over 70 may be related to the healing of IASD.