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Coupled Responses of Sewol,Twin Barges and Slings During salvage

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China Ocean Engineering 2018年第2期32卷 226-235页

作者： YAO Zong WANG Wei-ping JIANG Yan CHEN Shi-hai Shanghai salvage Company Shanghai 200090China

Korean Sewol is successfully lifted up with the strand jack system based on twin barges. During the salvage operation, two barges and Sewol encounter offshore environmental conditions of wave, current and wind. It is inevitable that the relative motions among the three bodies are coupled with the sling tensions, which may cause big dynamic loads for the lifting system. During the project engineering phase and the site operation, it is necessary to build up a simulation model that can precisely generate the coupled responses in order to define a suitable weather window and monitor risks for the salvage operation. A special method for calculating multibody coupled responses is introduced into Sewol salvage project. Each body’s hydrodynamic force and moment in multibody configuration is calculated in the way that one body is treated as freely moving in space, while other bodies are set as fixed *** hydrodynamic force and moment are then applied into a numerical simulation model with some calibration coefficients being inserted. These coefficients are calibrated with the model test results. The simulation model built up this way can predict coupled responses with the similar accuracy as the model test and full scale measurement,and particularly generate multibody shielding effects. Site measured responses and the responses only resulted from from the simulation keep project management simultaneously to judge risks of each salvage stage, which are important for success of Sewol salvage.

关键词： salvage lifting barge coupled response numerical simulation model test site measurement

Comparison of cell salvage with one and two suction devices during cesarean section in patients with placenta previa and/or accrete: a randomized controlled trial

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Chinese Medical Journal 2020年第6期133卷 638-643页

作者： Hong Chen Hua Tan Pei-Xin Luo Yi-Fang Shen Chang-Cheng Lyu Xiao-Wei Qian Xin-Zhong Chen Department of Anesthesia Women's HospitalZhejiang University School of MedicineHangzhouZhejiang 310006China Department of Clinical Laboratory Women's HospitalZhejiang University School of MedicineHangzhouZhejiang 310006China

Background:Cell salvage has recently been recommended for obstetric use in cases with a high risk of massive hemorrhage during cesarean section(CS).However,limited data are available to support the use of one suction device to collect lost *** study aimed to investigate the volume of red blood cells(RBCs)salvaged and the components of amniotic fluid(AF)in blood salvaged by one suction device or two devices during CS in patients with placenta previa and/or ***:Thirty patients with placenta previa and/or accrete undergoing elective CS in the Women's Hospital of Zhejiang University School of Medicine were recruited for the present study from November 1,2017 to December 1,*** patients were randomly assigned to one of the two groups according to an Excel-generated random number sheet:Group 1(w=15),in which only one suction device was used to aspirate all blood and AF,and Group 2(w=15),in which a second suction device was mainly used to aspirate AF before the delivery of the *** samples of blood per patient(pre-wash,post-wash,and post-filtration)were collected to measure AF *** salvaged RBC volumes were *** data of pre-wash,post-wash,and postfiltration samples were analyzed by using one-way analysis of variance with Tukey5s test for multiple comparisons,or Kruskal-Wallis test with Dunn test for multiple *** of continuous data between Group 1 and Group 2 were conducted using Student's t test or Mann-Whitney U ***:The salvaged RBC volume was significantly higher in Group 1 than that in Group 2(401.6±77.2 mL vs.330.1土53.3 mL,?=4.175,P<0.001).In both groups,squamous cells,lamellar bodies,and fat were significantly reduced by washing(all P<0.001)and squamous cells were further reduced by filtering(P<0.001).Squamous cells were found in six post-filtration samples(three from each group).Lamellar bodies and fat were completely removed by ***-like growth factor binding protein

关键词： Cell salvage Blood transfusion Placenta previa Placenta accrete Cesarean section

Intra-operative cell salvage for cesarean delivery:a retrospective study using propensity score matched analysis

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Chinese Medical Journal 2020年第2期133卷 183-189页

作者： Xi Wu Shang-Long Yao Jing Wu Cheng-Ying Li Lei-Ming Xia Department of Anesthesiology Institute of Anesthesiology and Critical Care MedicineUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430022China

Background:Obstetric hemorrhage is a major cause of maternal death during cesarean *** objective of this retrospective observational study was to evaluate the efficacy and safety of intra-operative cell salvage(IOCS)in cesarean ***:We included a total of 361 patients diagnosed with central placenta previa who underwent cesarean section from May 2016 to December *** this study,196 patients received autologous transfusion using IOCS(IOCS group)and 165 patients accepted allogeneic blood transfusion(ABT group).Propensity score matched analysis was performed to balance differences in the baseline variables between the IOCS group and ABT *** in the IOCS group were matched 1:1 to patients in the ABT ***:After propensity score matching,137 pairs of cases between the two groups were successfully matched and no significant differences in baseline characteristics were found between the IOCS group and ABT *** in the IOCS group were associated with significantly shorter length of hospital stay,compared with ABT group(8.9±4.1 days vs.10.3±5.2 days,t=2.506,P=0.013).The postoperative length of hospital stay was 5.3±1.4 days for patients in the IOCS group and 6.6±3.6 days for those in the ABT group(t=4.056,P<0.001).The post-operative hemoglobin level in the IOCS group and ABT group was 101.3±15.4 and 96.3±16.6 g/L,respectively,which were significantly different(t=2.615,P=0.009).Allogeneic red blood cell transfusion was significantly lower at 0 unit(range:0–11.5 units)in the IOCS group when compared with 2 units(range:1–20 units)in the ABT group(P<0.001).Conclusions:This retrospective observational study using propensity score matched analysis suggested that IOCS was associated with shorter length of postoperative hospital stay and higher post-operative hemoglobin levels during cesarean delivery.

关键词： Allogeneic Blood salvage Cesarean section Hemorrhage

Penile prosthesis implant in the special populations:diabetics,neurogenic conditions,fibrotic cases,concurrent urinary continence surgery,and salvage implants

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Asian Journal of Andrology 2020年第1期22卷 39-44页

作者： Eric Chung AndroUrology Centre BrisbaneQLD 4000Australia University of Queensland Princess Alexandra HospitalBrisbaneQLD 4000Australia Macquarie University Hospital SydneyNSW 2109Australia

Penile prosthesis implant(PPI)remains an effective and safe treatment option for men with erectile dysfunction(ED).However,PPI surgery can be associated with a higher risk of complications in certain *** article provides a critical review of relevant publications pertaining to PPI in men with diabetes,significant corporal fibrosis,spinal cord injury,concurrent continence surgery,and complex salvage *** discussion of each category of special populations includes a brief review of the surgical challenges and a practical action-based set of *** specific patient populations posed considerable challenges in PPI surgery,strict pre-and postoperative management coupled with safe surgical practice is a prerequisite to achieving excellent clinical outcomes and high patient satisfaction rate.

关键词： continence surgery diabetes erectile dysfunction penile prosthesis implant Peyronie’s disease priapism salvage surgery spinal cord injury

Wave Motion Compensation Scheme and Its Model Tests for the salvage of An Ancient Sunken Boat

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China Ocean Engineering 2006年第4期20卷 635-643页

作者：叶家玮陈远明王冬姣刘月琴宋鑫黄元田 Department of Naval Architecture and Ocean Engineering South China University of Technology

The application of the vertical hoisting jack and wave motion compensation techniques to the salvage of an ancient sunken boat is introduced. The boat is wooden, loaded with cultural relics. It has been immersed at the bottom of the South China Sea for more than 800 years. In order to protect the structure of the boat and the cultural relics inside to the largest extent, an open caisson is used to hold the sunken beat and the silts around before they are raised from the seabed all together as a whole. In the paper, first, the seakeeping model test of the system of the salvage barge and the open caisson is done to determine some important wave response parameters. And then a further experimental study of the ap- plication of the vertical hoisting jack and wave motion compensation scheme to the salvage of the sunken boat is carried out. In the model tests, the techniques of the integrative mechanic-electronic-hydraulic control, wave motion forecast and wave motion compensation are used to minimize the heave motion of the open caisson. The results of the model tests show that the heave motion of the open caisson can be reduced effectively by the use of the present method.

关键词： model test salvage wave motion compensation

Photodynamic therapy as salvage therapy for residual microscopic cancer after ultra-low anterior resection: A case report

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World Journal of Clinical Cases 2019年第6期7卷 798-804页

作者： Si-Qi Zhang Kui-Jie Liu Hong-Liang Yao San-Lin Lei Zhen-Dong Lei Wen-Jun Yi Li Xiong Hua Zhao Department of General Surgery the Second Xiangya HospitalCentral South University

BACKGROUND The rate of positive resection margins(R1) in patients with low rectal cancer is substantial. Recommended remedies such as extended resection or chemoradiotherapy have their own serious drawbacks. It has been reported that photodynamic therapy(PDT) as a remedial treatment for esophageal *** cancer and esophageal cancer has many similarities,however,PDT as a salvage therapy for rectal cancer is *** SUMMARY Here,we describe a 56-year-old man who was admitted to the hospital due to a 6-mo history of hemafecia,which had been aggravated for 1 mo. Colonoscopy revealed a 3 × 4 cm ulcerated mass in the rectum 4 cm from the *** pathological examination showed villous adenoma,moderate-tohigh-grade dysplasia,good differentiation,and invasion of the mucosal *** patient had R1 after ultra-low anterior resection,but he refused extended resection and experienced severe liver function impairment after 3 cycles of chemotherapy. Ultimately,the patient underwent PDT to remove R1. After five years of follow-up,there was no liver function impairment,recurrence,metastasis,sexual dysfunction,or abnormal defecation *** This is the first case worldwide in which R1 of rectal cancer were successfully treated by PDT.

关键词： Low rectal cancer Photodynamic therapy Positive microscopic distal margin salvage therapy Removal Residual microscopic cancer Case report

Conversion therapy and suitable timing for subsequent salvage surgery for initially unresectable hepatocellular carcinoma: What is new?

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World Journal of Clinical Cases 2018年第9期6卷 259-273页

作者： Ze-Feng Zhang Yu-Jun Luo Quan Lu Shi-Xue Dai Wei-Hong Sha Department of Gastroenterology and Hepatology Guangdong Geriatrics Institute Guangdong General Hospital Guangdong Academy of Medical Sciences

AIM To review the conversion therapy for initially unre-sectable hepatocellular carcinoma(HCC) patients and the suitable timing for subsequent salvage surgery. METHODS A Pub Med search was undertaken from 1987 to 2017 to identify articles using the keywords including "unresectable" "hepatocellular carcinoma", "hepate-ctomy", "conversion therapy", "resection", "salvage surgery" and "downstaging". Additional studies were investigated through a manual search of the references from the articles. The exclusion criteria were duplicates, case reports, case series, videos, contents unrelated to the topic, comments, and editorial essays. The main and widely used conversion therapies and the suitable timing for subsequent salvage surgery were discussed in detail. Two members of our group independently performed the literature search and data extraction. RESULTS Liver volume measurements [future liver remnant(FLR)/total liver volume or residual liver volume/bodyweight ratio] and function tests(scoring systems and liver stiffness) were often performed in order to justify whether patients were suitable candidates for surgery. Successful conversion therapy was usually defined as downstaging the tumor, increasing FLR and providing subsequent salvage surgery, without increasing com-plications, morbidity or mortality. The requirementsfor performing salvage surgery after transcatheter arterial chemoembolization were the achievement of a partial remission in radiology, the disappearance of the portal vein thrombosis, and the lack of extrahepatic metastasis. Patients with a standardized FLR(sF LR) > 20% were good candidates for surgery after portal vein embolization, while other predictive parameters like growth rate, kinetic growth rate were treated as an effective supplementary. There was probably not enough evidence to provide a standard operation time after associating liver partition and portal vein ligation for staged hepatectomy or yttrium-90 microsphere radioembolization. The i

关键词： Unresectable Hepatocellular carcinoma Hepatectomy Conversion therapy salvage surgery Downstaging

Intraoperative cell salvage with autologous transfusion in liver transplantation

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World Journal of Gastrointestinal Surgery 2019年第1期11卷 11-18页

作者： Marcelo A Pinto Marcio F Chedid Leo Sekine Andre P Schmidt Rodrigo P Capra Carolina Prediger Jo?o E Prediger Tomaz JM Grezzana-Filho Cleber RP Kruel Division of Gastrointestinal Surgery and Liver Transplantation Hospital de Clínicas de Porto Alegre Medical School of UFRGS Division of Hematology Hospital de Clínicas de Porto Alegre Medical School of UFRGS Division of Anesthesia and Perioperative Medicine Hospital de Clínicas de Porto Alegre Medical School of UFRGS

Liver transplant(LT) is the primary treatment for patients with end-stage liver disease. About 25000 LTs are performed annually in the world. The potential for intraoperative bleeding is quite variable. However, massive bleeding is common and requires blood transfusion. Allogeneic blood transfusion has an immunosuppressive effect and an impact on recipient survival, in addition to the risk of transmission of viral infections and transfusion errors, among *** to prevent excessive bleeding or to use autologous blood have been proposed to minimize the negative effects of allogeneic blood *** reinfusion of autologous blood is possible through previous selfdonation or blood collected during the operation. However, LT does not normally allow autologous transfusion by prior self-donation. Hence, using autologous blood collected intraoperatively is the most feasible option. The use of intraoperative blood salvage autotransfusion(IBSA) minimizes the perioperative use of allogeneic blood, preventing negative transfusion effects without negatively impacting other clinical outcomes. The use of IBSA in patients with cancer is still a matter of debate due to the theoretical risk of reinfusion of tumor cells. However, studies have demonstrated the safety of IBSA in several surgical procedures, including LT for hepatocellular carcinoma. Considering the literature available to date, we can state that IBSA should be routinely used in LT, both in patients with cancer and in patients with benign diseases.

关键词： Liver transplantation Cell saver Hepatocellular carcinoma Blood transfusion Cell salvage

Idiopathic sudden sensorineural hearing loss:Effectiveness of salvage treatment with low-dose intratympanic dexamethasone

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Journal of Otology 2021年第1期16卷 6-11页

作者： Pedro Salvador Francisco Moreira da Silva Rui Fonseca Department of Otorhinolaryngology Hospital Senhora da OliveiraGuimaraesPortugal

Objectives:To evaluate hearing outcome of salvage treatment with intratympanic steroids(ITS)in idiopathic sudden sensorineural hearing loss(ISSNHL)refractory to initial systemic steroid(SS)*** and methods:A retrospective medical chart review was conducted on 54 consecutive patients with ISSNHL refractory to *** treatment with a low dose intratympanic dexamethasone(4 mg/ml)was offered after one week of primary *** were divided into two groups:25 patients accepted ITS(treatment group)and 29 patients did not undergo additional treatment(control group).A pure tone average(PTA)gain of at least 10 dB was considered hearing ***:Hearing improvement rate was higher in ITS group compared to control group(40%vs.13.8%,p=0.035).A mean PTA improvement of 8.6±9.8 dB was observed in the ITS group and,whereas the control group had an average hearing gain of 0.7±2 dB(p<0.001).Audiometric analysis revealed a significant hearing gain in ITS group at all tested frequencies compared to control group(p<0.05).Analysis of the selected variables,identified intratympanic steroid treatment as the only independent prognostic factor for hearing improvement(OR=4.2,95%CI:1.1e15.7;p=0.04).Conclusion:Intratympanic low dose dexamethasone is effective in patients with incomplete hearing recovery after primary systemic steroid treatment.

关键词： Intratympanic Steroids salvage Sudden sensorineural hearing loss Idiopathic