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https://www.readbyqxmd.com/read/28549964/a-strange-collection-after-surgery-for-an-aneurysm-of-the-popliteal-artery
#1
Gian Franco Veraldi, Luca Mezzetto, Roberta La Mendola, Paolo Criscenti, Marco Macrì, Albino Eccher
The popliteal fossa is the site of several diseases that may be similar in the clinical setting but very different in aetiology, treatment and prognosis. The contemporary presentation of more than one of these conditions is a rare though potentially fatal combination that may lead to a delay in the diagnosis and therapeutic approach. In this report we describe the case of a patient that presented at our Vascular Department for persistent pain and severe swelling of the right popliteal fossa eight months after the surgical treatment of a symptomatic popliteal aneurysm by mean of a dacron prosthetic graft...
May 23, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28549961/preliminary-results-of-aorfix-tm-stent-graft-to-treat-infrarenal-abdominal-aortic-aneurysms-with-severe-proximal-aortic-neck-angulation
#2
Pietro Volpe, Mafalda Massara, Antonino Alberti, Santo Marino, Alberto Volpe, Daniela Mazzaccaro, Silvia Stegher, Giovanni Nano
BACKGROUND: We report a preliminary experience about endovascular aortic repair (EVAR) of infrarenal abdominal aneurysm (iAAA) with severe proximal aortic neck angulation using the Aorfix(TM) stent graft. METHODS: Data of consecutive patients with iAAA with severe proximal neck angulation submitted to endovascular repair between September 2012 and December 2014 in two Italian centres of Vascular and Endovascular Surgery were retrospectively reviewed and outcomes analyzed using the software JMP 5...
May 23, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28549885/the-radial-approach-to-the-wrist-with-styloidectomy-a-cadaver-study
#3
F-A Lecoq, A Sébilo, P Bellemère
The radial approach to the wrist is already used in several surgical techniques such as radial styloidectomy and Zaidemberg's vascularized radial graft. The aim of our work was to describe the surgical anatomy of that approach and to determine the acceptable limits of radial oblique styloidectomy that does not damage the anterior and posterior radiocarpal ligaments. This radial approach was performed on 11 cadaver specimens. The superficial branches of the radial nerve and the antebrachial cephalic vein were carefully located in the superficial plane...
May 23, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28549712/assessment-of-competence-in-evar-procedures-a-novel-rating-scale-developed-by-the-delphi-technique
#4
M Strøm, L Lönn, B Bech, T V Schroeder, L Konge
OBJECTIVE/BACKGROUND: To develop a procedure specific global rating scale for assessment of operator competence in endovascular aortic repair (EVAR). METHODS: A Delphi approach was used to achieve expert consensus. A panel of 32 international experts (median 300 EVAR procedures, range 200-3000) from vascular surgery (n = 21) and radiology (n = 11) was established. The first Delphi round was based on a review of endovascular skills assessment papers, stent graft instructions for use, and structured interviews...
May 23, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28549521/techniques-of-parenchyma-sparing-hepatectomy-for-the-treatment-of-tumors-involving-the-hepatocaval-confluence-a%C3%A2-reliable-way-to-assure-an-adequate-future-liver-remnant-volume
#5
Lucio Urbani, Piero Colombatto, Riccardo Balestri, Gabriella Licitra, Chiara Leoni, Francesco Forfori, Gianluca Masi, Piero Boraschi, Maura Castagna, Piero Buccianti
BACKGROUND: Parenchyma-sparing hepatectomy techniques allow a lesser volume resection (<3 adjacent segments) for tumors involving the hepatic veins at the hepatocaval confluence, assuring adequate volume of the future liver remnant. We report the ability to perform parenchyma-sparing hepatectomy as planned from the preoperative imaging and the type of vascular intervention used to preserve hepatic outflow. METHODS: We analyzed 60 consecutive parenchyma-sparing hepatectomies in 54 patients for 7 primary and 53 metastatic tumors (48 colorectal), located in segments I, VII, VIII, or IVa and involving the hepatocaval confluence...
May 24, 2017: Surgery
https://www.readbyqxmd.com/read/28549358/-complication-analysis-in-lisfranc-fracture-dislocation
#6
R J García-Renedo, A Carranza-Bencano, R Leal-Gómez, F Cámara-Arrigunaga
OBJECTIVE: To value the complications and sequels for patients with Lisfrancs fracture-luxation (FLL). MATERIAL AND METHODS: A transverse ambispective study of cohorts was realized of 83 patients by diagnosis of Lisfrancs fracture-luxation. There was in use a protocol of withdrawal of information with variables related to the injury, clinical, therapeutic parameters, complications and scales of clinical valuation. RESULTS: 66 patients (79...
November 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28549011/use-of-elderly-donors-in-liver-transplantation-a-paired-match-analysis-at-a-single-center
#7
Davide Ghinolfi, Quirino Lai, Daniele Pezzati, Paolo De Simone, Erion Rreka, Franco Filipponi
OBJECTIVE: To evaluate the use of elderly donors in liver transplantation (LT) and identify risk factors associated with a worse outcome. SUMMARY BACKGROUND DATA: Use of livers from very old donors could expand the donor pool but is not universally implemented. METHODS: This is a retrospective, single-center medical record review. From January 2001 to December 2014, 1354 LTs were performed. After exclusion of donors <18 years, ABO-incompatible LT, re-LT and UNOS 1 status patients, LT recipients were stratified into 2 groups based on donor age: 18-69 (n=692) vs...
May 25, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28547835/application-of-omentum-as-an-in-vivo-bioreactor-for-regeneration-of-decellularized-human-internal-mammary-artery
#8
Reza Khorramirouz, Maryam Kameli, Sahar Eftekharzadeh, Abdol-Mohammad Kajbafzadeh
This study investigates the extent of cell seeding as well as lumen patency in acellular Internal mammary artery (IMA) scaffolds that have been re-cellularized by omentum as a natural bioreactor. Sixteen Virgin female Wistar rats were selected for implantation of acellular scaffold in omentum. Following laparotomy omentum was retracted to the outside of the abdomen and the more vascularized portion of it was selected for the experiment. The scaffold was wrapped by omentum and placed between two layers of rectus muscles that have been previously dissected...
May 25, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28546042/occluded-superficial-femoral-artery-used-for-emergency-reconstruction-a-consecutive-case-series-about-the-proper-conduit-technique
#9
M S Marsman, A Kh Jahrome, F L Moll, G G Koning
INTRODUCTION: Deep wound infections in the groin region can result in an acute or life threatening condition. Especially when there is no suitable vein available because of many reasons (e.g. previous surgery, small vessel diameter). Synthetic prosthesis sometimes are not 'first-choice-technique' because of contamination or infection. It was ad hoc hypothesized in an acute setting that a segment of an occluded Superficial Femoral Artery (SFA) could be used as a conduit in combination with eversion technique, known from carotid surgery...
May 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28545821/surgical-management-of-severe-ischaemic-mitral-regurgitation
#10
Yong Zhang, Dongxu Wang, Yu Liu, Dengshun Tao, Yan Jin, Hui Jiang, Zengwei Wang, Huishan Wang
BACKGROUND: Coronary artery bypass graft surgery (CABG) with mitral valve surgery is undisputed in severe ischaemic mitral regurgitation (IMR) treatment, but the controversy is whether mitral valve replacement (MVR) or mitral valvuloplasty (MVP) should be used. METHODS: Data was collected from 130 cases of severe IMR patients who underwent CABG and MVP or MVR from June 2010 to June 2015 to compare the short-term efficacy of CABG with MVP or MVR in the treatment of severe IMR patients...
May 9, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28544815/fabrication-of-viable-and-functional-pre-vascularized-modular-bone-tissues-by-coculturing-mscs-and-huvecs-on-microcarriers-in-spinner-flasks
#11
Songjie Zhang, Min Zhou, Zhaoyang Ye, Yan Zhou, Wen-Song Tan
BACKGROUND AND AIM: Slow vascularization often impedes the viability and function of engineered bone replacements. Prevascularization is a promising way to solve this problem. In this study, a new process was developed by integrating microcarrier culture and coculture to fabricate pre-vascularized bone microtissues with mesenchymal stem cells (MSCs) and human umbilical vein endotheli-al cells (HUVECs). METHODOLOGY: Initially, coculture medium and cell ratio between MSCs and HUVECs were optimized in tissue culture plates concerning cell proliferation, osteogenesis and angiogenesis...
May 24, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28543392/mechanical-analysis-of-the-vascularized-fibular-graft-prosthetic-composite-vfgpc-for-internal-hemipelvectomy-reconstruction
#12
Jonathan Morris, Rui Yang, Michael Roth, Jonathan Gill, Richard Gorlick, Yungtai Lo, Bang H Hoang, Evan Garfein, David S Geller
INTRODUCTION: The vascularized fibular graft prosthetic composite (VFGPC) is used for reconstruction after internal hemipelvectomy. The purpose of this study was to create a mathematical model that calculates the mechanical effects of the vascularized fibular graft on the VFGPC. METHODS: The effects of the VFG positioning were calculated based on three-dimensional static analyzes to determine the direction, magnitude, and distribution of the forces through the prosthesis and VFG...
May 22, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28542429/the-unsuitability-of-implantable-doppler-probes-for-the-early-detection-of-renal-vascular-complications-a-porcine-model-for-prevention-of-renal-transplant-loss
#13
Chris Amdisen, Bente Jespersen, Ulla Møldrup, Anna K Keller
BACKGROUND: Vascular occlusion is a rare, but serious complication after kidney transplantation often resulting in graft loss. We therefore aimed to develop an experimental porcine model for stepwise reduction of the renal venous blood flow and to compare an implantable Doppler probe and microdialysis for fast detection of vascular occlusion. METHODS: In 20 pigs, implantable Doppler probes were placed on the renal artery and vein and a microdialysis catheter was placed in the renal cortex...
2017: PloS One
https://www.readbyqxmd.com/read/28542133/protein-disulfide-isomerase-mediated-apoptosis-and-proliferation-of-vascular-smooth-muscle-cells-induced-by-mechanical-stress-and-advanced-glycosylation-end-products-result-in-diabetic-mouse-vein-graft-atherosclerosis
#14
Suning Ping, Shuying Liu, Yuhuan Zhou, Ziqing Li, Yuhuang Li, Kefeng Liu, Adham Sa Bardeesi, Linli Wang, Jingbo Chen, Lie Deng, Jingjing Wang, Hong Wang, Dadi Chen, Zhengyu Zhang, Puyi Sheng, Chaohong Li
Protein disulfide isomerase (PDI) involves cell survival and death. Whether PDI mediates mechanical stretch stress (SS) and/or advanced glycosylation end products (AGEs) -triggered simultaneous increases in proliferation and apoptosis of vascular smooth muscle cells (VSMCs) is unknown. Here, we hypothesized that different expression levels of PDI trigger completely opposite cell fates among the different VSMC subtypes. Mouse veins were grafted into carotid arteries of non-diabetic and diabetic mice for 8 weeks; the grafted veins underwent simultaneous increases in proliferation and apoptosis, which triggered vein graft arterializations in non-diabetic or atherosclerosis in diabetic mice...
May 25, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28541093/vascular-graft-infection-a-new-model-for-treatment-management
#15
Stefanie Deinhardt-Emmer, Verena Hoerr, Bettina Löffler
No abstract text is available yet for this article.
May 25, 2017: Future Microbiology
https://www.readbyqxmd.com/read/28540725/a-bio-inspired-3d-multilayered-shape-memory-scaffold-with-a-hierarchically-changeable-micropatterned-surface-for-efficient-vascularization
#16
Dian Liu, Tao Xiang, Tao Gong, Tian Tian, Xian Liu, Shaobing Zhou
How to achieve three-dimensional (3D) cell alignment and subsequent prompt tissue regeneration remains a great challenge. Here, inspired by the interior 3D architecture of native arteries, we develop a new 3D multilayered shape memory vascular scaffold with a hierarchically changeable micropatterned surface for vascularization. The shape memory function renders the implantation of the scaffold safe and convenient via minimally invasive surgery. By co-culturing endothelial cells (ECs) and vascular smooth muscle cells (VSMCs) on the 3D multilayered structure, the inner monolayer, which has a square micropatterned surface, can promote EC adhesion and migration, resulting in rapid endothelialization; the outer multilayers, which have rectangular micropatterned surfaces, can induce a circumferential alignment of VSMCs...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28540322/targeting-wnt-%C3%AE-catenin-activated-cells-with-dominant-negative-n-cadherin-to-reduce-neointima-formation
#17
Sarah Hulin-Curtis, Helen Williams, Kerry S Wadey, Graciela B Sala-Newby, Sarah J George
Approximately 50% of coronary artery bypass grafts using the autologous saphenous vein fail within 10 years due to intimal thickening. This study examined whether a gene therapy approach that selectively kills Wnt/β-catenin/T cell factor (TCF) activated vascular smooth muscle cells (VSMCs) using dominant-negative N-cadherin (dn-N-cadherin) reduced intimal thickening. Cultured human VSMCs infected with an adenovirus (Ad) encoding dn-N-cadherin via the TCF promoter (Ad-TOP-dn-N-cadherin) specifically expressed dn-N-cadherin in response to activation of the Wnt/β-catenin/TCF pathway...
June 16, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28540144/spondylitis-transmitted-from-infected-aortic-grafts-a-review
#18
REVIEW
Panayiotis D Megaloikonomos, Thekla Antoniadou, Leonidas Dimopoulos, Marcos Liontos, Vasilios Igoumenou, Georgios N Panagopoulos, Efthymia Giannitsioti, Andreas Lazaris, Andreas F Mavrogenis
Graft infection following aortic aneurysms repair is an uncommon but devastating complication; its incidence ranges from <1% to 6% (mean 4%), with an associated perioperative and overall mortality of 12% and 17.5-20%, respectively. The most common causative organisms are Staphylococcus aureus and Escherichia coli; causative bacteria typically arise from the skin or gastrointestinal tract. The pathogenetic mechanisms of aortic graft infections are mainly breaks in sterile technique during its implantation, superinfection during bacteremia from a variety of sources, severe intraperitoneal or retroperitoneal inflammation, inoculation of bacteria during postoperative percutaneous interventions to manage various types of endoleaks, and external injury of the vascular graft...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28539296/-establishment-of-a-rabbit-model-of-small-diameter-vascular-graft-replacement
#19
Jia-Qing Zhang, Kun-Tang Chen, Fu-Wei Zhang, Shao-Bin Li, Yuan-Zhou Wu, Jing Feng, Wu-Jun Wang, Yu-Sheng Yan
OBJECTIVE: To establish an rabbit model that mimics the hemodynamics of the bypass graft after coronary artery bypass surgery. METHODS: Sixteen New Zealand rabbits were randomly divided into two groups for abdominal aortic artery replacement using a 3-cm-long ePTFE graft with an inner diameter 4 mm through an incision at 1/3 from the middle to the lower part of the abdomen (group A) or in the lower abdomen (group B). The general conditions of the rabbits, operative time, number of collateral vessels that needed to be ligated, rate of massive intraoperative bleeding, fluctuation of vascular anastomosis after surgery, patency rate of the graft on day 7 after the operation were compared between the two groups...
May 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28539044/the-effect-of-resveratrol-on-modulation-of-endothelial-cells-and-macrophages-for-rapid-vascular-regeneration-from-electrospun-poly-%C3%AE%C2%B5-caprolactone-scaffolds
#20
Zhihong Wang, Yifan Wu, Jianing Wang, Chuangnian Zhang, Hongyu Yan, Meifeng Zhu, Kai Wang, Chen Li, Qingbo Xu, Deling Kong
Rapid endothelialization is one key factor that determines the success of small diameter vascular grafts as an artery substitute in the treatment of cardiovascular disease. Aimed to facilitate vascular regeneration, we developed a vascular scaffold loaded with resveratrol, which is a natural compound extracted from plants and showed multifaceted effects in cardiovascular protection. The tubular poly (ε-caprolactone) (PCL) scaffold was prepared by electrospinning with resveratrol in the PCL solution. In vitro assay demonstrated that resveratrol could be released from the scaffolds in a sustained and controlled manner...
May 25, 2017: ACS Applied Materials & Interfaces
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