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https://www.readbyqxmd.com/read/28543392/mechanical-analysis-of-the-vascularized-fibular-graft-prosthetic-composite-vfgpc-for-internal-hemipelvectomy-reconstruction
#1
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/28536830/transcatheter-aortic-valve-implantation-in-patients-on-corticosteroid-therapy
#2
Ryosuke Higuchi, Tetsuya Tobaru, Kenichi Hagiya, Mike Saji, Keitaro Mahara, Itaru Takamisawa, Jun Shimizu, Shuichiro Takanashi, Morimasa Takayama
Transcatheter aortic valve implantation (TAVI) is recommended for patients who are inoperable or at high risk for surgical aortic valve replacement (SAVR). Corticosteroid therapy is considered to be a risk factor for SAVR, but there is a paucity of information about TAVI in patients taking corticosteroids. The aim of this study is to elucidate the outcome of TAVI in patients on chronic corticosteroid therapy, compared with SAVR. We retrospectively analyzed patients on corticosteroid therapy who underwent TAVI (n = 21) or SAVR (n = 30) for severe aortic stenosis in Sakakibara Heart Institute...
May 23, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28496017/comparison-of-the-incidence-of-complications-and-secondary-surgical-interventions-necessary-in-patients-with-chronic-lower-limb-ischemia-treated-by-both-open-and-endovascular-surgeries
#3
Dariusz Janczak, Maciej Malinowski, Wojciech Bąkowski, Katarzyna Krakowska, Karol Marschollek, Paweł Marschollek, Mariusz Chabowski
BACKGROUND: Peripheral arterial disease (PAD) affects 3%-10% of the population before the age of 70 years and 15%-20% after that age.The aim of the study was to compare the incidence of complications and secondary interventions in patients who underwent each type of treatment. METHODS: We analyzed 734 medical records of the Department of Surgery at the 4th Military Teaching Hospital in Wroclaw, In total, 394 were operated on with open surgery; an endarterectomy (59...
May 11, 2017: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28494781/preparation-and-characterization-of-small-diameter-decellularized-scaffolds-for-vascular-tissue-engineering-in-an-animal-model
#4
Shuangyue Xu, Fangna Lu, Lianna Cheng, Chenglin Li, Xu Zhou, Yuan Wu, Hongxing Chen, Kaichuang Zhang, Lumin Wang, Junjie Xia, Guoliang Yan, Zhongquan Qi
BACKGROUND: The development of a suitable extracellular matrix (ECM) scaffold is the first step in vascular tissue engineering (VTE). Synthetic vascular grafts are available as an alternative to autologous vessels in large-diameter arteries (>8 mm) and medium-diameter arteries (6-8 mm). In small-diameter vessels (<6 mm), synthetic vascular grafts are of limited use due to poor patency rates. Compared with a vascular prosthesis, natural tissue ECM has valuable advantages. Despite considerable progress in recent years, identifying an optimal protocol to create a scaffold for use in small-diameter (<6 mm) fully natural tissue-engineered vascular grafts (TEVG), remains elusive...
May 11, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28486657/minimal-access-surgery-for-mitral-valve-endocarditis
#5
Cristina Barbero, Giovanni Marchetto, Davide Ricci, Samuel Mancuso, Massimo Boffini, Enrico Cecchi, Francesco Giuseppe De Rosa, Mauro Rinaldi
OBJECTIVES: Minimal access mitral valve surgery (MVS) has already proved to be feasible and effective with low perioperative mortality and excellent long-term outcomes. However, experience in more complex valve diseases such as infective endocarditis (IE) still remains limited. The aim of this retrospective study was to evaluate early and long-term results of minimal access MVS for IE. METHODS: Data were entered into a dedicated database. Analysis was performed retrospectively for the 8-year period between January 2007 and April 2015...
May 8, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28484830/insights-on-mid-term-tavr-performance-3-year-clinical-and-echocardiographic-results-from-the-corevalve-advance-study
#6
Sabine Bleiziffer, Johan Bosmans, Stephen Brecker, Ulrich Gerckens, Peter Wenaweser, Corrado Tamburino, Axel Linke
BACKGROUND: Extensive evidence relating to transcatheter aortic valve replacement (TAVR) has accumulated in recent years, but mid-term outcomes are less reported. We investigated 996 patients after implantation of the CoreValve prosthesis for severe aortic stenosis in a real-world setting. OBJECTIVE: To report clinical and echocardiographic 3-year results from the ADVANCE study. METHODS: ADVANCE is a prospective, multicenter, fully monitored, nonrandomized clinical study...
May 8, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28458822/an-original-technique-of-venous-autoplasty-after-duodenopancreatectomy-for-tumors-involving-the-infrarenal-inferior-vena-cava
#7
Bertrand Le Roy, Emmanuel Buc, Constance Hordonneau, Julie Veziant, Denis Pezet, Johan Gagnière
Tumor involvement of the inferior vena cava (IVC) by hepatobiliary, pancreatic or duodenal malignancies can compromise adequate resection. However, radical resection with negative histological margins remains the only chance of cure. Various techniques are used for venous reconstruction, using a prosthetic graft interposition in most of the cases. However, in case of associated digestive resections, such as pancreaticoduodenectomy, postoperative complications can be responsible for prosthesis infection and related vascular complications...
February 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28457382/case-report-aortic-valve-replacement-after-jarvik-2000-left-ventricular-assist-device-implantation-in-long-time-survivor-with-severe-aortic-valve-regurgitation
#8
A Dokollari, M Cameli, C G Sassi, G Davoli, S Scolletta, C Ricci, P Lucatelli, S Mondillo, M Maccherini
BACKGROUND: There are limited clinical records in the literature regarding aortic valve replacement in left ventricular assist device (L-VAD) patients. Previously we had two cases of severe aortic valve regurgitation in patients with L-VAD support treated with Corvalve prosthesis insertion and Amplatzer closure procedure. Both patients died a few days after the procedure from complications not related to the procedure itself. PATIENT HISTORY: The patient was a male with previous coronary artery bypass graft surgery in 2001 that was complicated with postischemic dilated cardiomyopathy with severe heart failure (ejection fraction [EF], 20%)...
May 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28430904/catheter-based-tricuspid-valve-replacement-first-experimental-data-of-a-newly-designed-bileaflet-stent-graft-prosthesis%C3%A2
#9
Henning F Lausberg, Rafal Gryszkiewicz, Maximilian Kuetting, Moritz Baumgaertner, Marcos Centola, Hans-Peter Wendel, Martina Nowak-Machen, David Schibilsky, Tobias Kruger, Christian Schlensak
OBJECTIVES: Moderate or severe degree tricuspid valve regurgitation (TVR) is associated with high rates of morbidity and mortality. Surgical correction as the only therapeutic option offers unsatisfactory results. Recently, several interventional procedures have been introduced clinically in a limited cohort. We present our initial experiments with an innovative interventional valved stent graft for treatment of TVR. METHODS: A newly designed porcine pericardium-covered nitinol stent graft with a lateral bicuspid valve was adapted to size in a cadaver study...
April 18, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28418361/-intraoperative-formation-of-the-valved-conduit-in-aortic-root-surgery
#10
Yu V Belov, A V Lysenko, R N Komarov, A V Stonogin
AIM: To present an experience of intraoperative manufacture of the valved conduit in aortic root surgery in the Department of Cardiac Surgery of Sechenov First Moscow State Medical University. MATERIAL AND METHODS: In our department aortic valve and ascending aortic replacement using intraoperatively manufactured valved conduit was performed in 11 patients for the period 2012-2016. Technical aspects, choice of vascular prosthesis size and type of fixation to achieve optimal hemodynamics and adequate impermeability of stitches are described...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28351227/early-dynamic-positron-emission-tomography-pet-computed-tomography-and-pet-angiography-for-endoleak-detection-after-abdominal-endovascular-aneurysm-repair
#11
Robert Drescher, Falk Gühne, Martin Freesmeyer
PURPOSE: To propose a positron emission tomography (PET)/computed tomography (CT) protocol including early-dynamic and late-phase acquisitions to evaluate graft patency and aneurysm diameter, detect endoleaks, and rule out graft or vessel wall inflammation after endovascular aneurysm repair (EVAR) in one examination without intravenous contrast medium. TECHNIQUE: Early-dynamic PET/CT of the endovascular prosthesis is performed for 180 seconds immediately after intravenous injection of F-18-fluorodeoxyglucose...
March 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28351207/the-effect-of-cognitive-impairment-on-prosthesis-use-in-older-adults-who-underwent-amputation-due-to-vascular-related-etiology-a-systematic-review-of-the-literature
#12
Daniel Joseph Lee, Matthew C Costello
BACKGROUND: Older adults with amputations secondary to vascular etiologies may additionally present with cognitive impairment. Cognition plays an important role in the adoption of a prosthetic limb, although the degree and type of impact are debated. Previous literature reviews have not been directed at the specific population of older adults who underwent vascular-related lower limb amputation. OBJECTIVES: First, to assess extant literature for relationships between cognitive function and prosthesis-related outcomes in older adults who underwent lower limb amputation for vascular-related etiologies...
March 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28337637/in-vivo-paracoccidioides-sp-biofilm-on-vascular-prosthesis
#13
Maria Emilia Cattana, Maria Fernanda Tracogna, Isabel Marques, Florencia Rojas, Mariana Fernández, María de Los Ángeles Sosa, Javier Mussin, Gustavo Giusiano
Paracoccidioidomycosis is an endemic mycosis caused by Paracoccidioides species limited to Latin America arising with the chronic form in 90% of cases. The capacity of microorganisms to form biofilms is considered of great importance medical since can contribute to the persistence and to the chronic state of the diseases. The ability of Paracoccidioides to form biofilm has been demonstrated in vitro. In our study, for the first time we have observed this capability in vivo on a vascular prosthesis using scanning electron microscope showing a dense network of Paracoccidioides yeasts covered by an extracellular matrix...
March 23, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28283218/long-term-performance-evaluation-of-small-diameter-vascular-grafts-based-on-polyvinyl-alcohol-hydrogel-and-dextran-and-mscs-based-therapies-using-the-ovine-pre-clinical-animal-model
#14
Nuno Alexandre, Irina Amorim, Ana Rita Caseiro, Tiago Pereira, Rui Alvites, Alexandra Rêma, Ana Gonçalves, Guilherme Valadares, Elísio Costa, Alice Santos-Silva, Miguel Rodrigues, Maria Ascensão Lopes, André Almeida, José Domingos Santos, Ana Colette Maurício, Ana Lúcia Luís
The functional and structural performance of a 5cm synthetic small diameter vascular graft (SDVG) produced by the copolymerization of polyvinyl alcohol hydrogel with low molecular weight dextran (PVA/Dx graft) associated to mesenchymal stem cells (MSCs)-based therapies and anticoagulant treatment with heparin, clopidogrel and warfarin was tested using the ovine model during the healing period of 24 weeks. The results were compared to the ones obtained with standard expanded polyetetrafluoroethylene grafts (ePTFE graft)...
March 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28251599/an-iliac-arterial-pseudoaneurysm-diagnosed-40%C3%A2-years-after-suffering-blunt-trauma
#15
Atsushi Guntani, Eisuke Kawakubo, Shinsuke Mii
BACKGROUND: A chronic iliac arterial pseudoaneurysm caused by blunt trauma is very rare. CASE PRESENTATION: The patient had gunshot wound in the right thigh and blunt trauma 40 years earlier. An abdominal computed tomography revealed the presence of a right iliac arterial pseudoaneurysm, and we successfully treated the pseudoaneurysm by resection and in situ reconstruction with a bifurcated vascular prosthesis. CONCLUSIONS: We herein present a rare case of a pseudoaneurysm of the right iliac artery diagnosed decades after blunt trauma...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28248406/trans-catheter-aortic-valve-implantation-contemporary-practice-and-the-future
#16
Omar Aldalati, Philip MacCarthy, Rafał Dworakowski
With increasing life expectancy, the epidemic of valvular heart disease, especially aortic stenosis (AS), is becoming more prevalent. Transcatheter aortic valve implantation (TAVI) has emerged as an alternative therapy for patients with significant aortic valve disease. It offers a less invasive procedure in comparison to surgical aortic valve replacement (sAVR) and an attractive substitute from the patient's perspective. The evidence for TAVI in inoperable and high risk surgical patients is now established and in the intermediate risk group has been accumulating rapidly and is looking favourable for TAVI...
March 1, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28243018/surgical-outcomes-of-porcine-acellular-dermis-graft-in-anophthalmic-socket-comparison-with-oral-mucosa-graft
#17
COMPARATIVE STUDY
Livia Teo, Young Jun Woo, Dong Kyu Kim, Chang Yeom Kim, Jin Sook Yoon
PURPOSE: We describe our experience with the Permacol graft in anophthalmic socket reconstruction, and compare it to the autologous buccal mucosal graft, emphasizing the postoperative vascularization and contraction of each graft. METHODS: This was a retrospective comparative study. We measured the time necessary for the graft surface to be completely vascularized, as well as the fornix depth of the conjunctival sac in anophthalmic patients. RESULTS: Ten patients underwent Permacol graft reconstruction, with 44 undergoing buccal mucosal graft reconstruction...
February 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28238108/enhanced-vascular-biocompatibility-of-decellularized-xeno-allogeneic-matrices-in-a-rodent-model
#18
M van Steenberghe, T Schubert, Y Guiot, C Bouzin, X Bollen, P Gianello
Glutaraldehyde preservation is the gold standard for cardiovascular biological prosthesis. However, secondary calcifications and the absence of tissue growth remain major limitations. Our study assessed in vitro and in vivo the biocompatibility of human (fascia lata, pericardium) and porcine tissues (pericardium, peritoneum) treated with a physicochemical procedure for decellularization and non-conventional pathogens inactivation. Biopsies were performed before and after treatment to assess decellularization (HE/Dapi staining/DNA quantification/MHC I/alpha gal immunostaining) and mechanical integrity...
June 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28224036/clinical-results-of-biologic-prosthesis-a-systematic-review-and-meta-analysis-of-comparative-studies
#19
REVIEW
Chumpon Wilasrusmee, Boonying Siribumrungwong, Suthas Horsirimanont, Napaphat Poprom, Jakrapan Jirasiritham, Ammarin Thakkinstian
BACKGROUND: Biologic prosthesis (BP) has been reported as a safe alternative to polytetrafluoroethylene (PTFE) in vascular reconstruction. However, efficacy of BP remains controversial. We, therefore, conducted a systematic review to summarize previous available evidences comparing the BP and PTFE in terms of clinical outcomes. MATERIALS AND METHODS: A literature search of the MEDLINE and Scopus was performed to identify comparative studies reporting outcomes of BP, PTFE, and/or autologous veins graft (VG) in vascular access for hemodialysis or femoropopliteal bypass...
March 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28215460/early-experience-with-lateral-lumbar-total-disc-replacement-utility-complications-and-revision-strategies
#20
Gregory M Malham, Rhiannon M Parker
Lumbar total disc replacement (TDR) is an alternative to interbody fusion for the treatment of symptomatic degenerative disc disease. Traditionally, lumbar TDR is performed via an anterior retroperitoneal approach with regional risks of vascular and visceral injury. The direct lateral retroperitoneal, transpsoas approach avoids mobilisation of the great vessels and preserves the anterior longitudinal ligament, thereby maintaining physiological limits on motion. This study aimed to (i) report one site's early experience with lateral lumbar TDR and (ii) provide case examples illustrating the utility, complications and revision strategies of the XL-TDR device...
May 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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