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https://www.readbyqxmd.com/read/28430904/catheter-based-tricuspid-valve-replacement-first-experimental-data-of-a-newly-designed-bileaflet-stent-graft-prosthesis%C3%A2
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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...
February 25, 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
#11
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
#12
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...
February 16, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28180975/-management-of-lymphatic-fistulas-in-the-groin-from-a-surgeon-s-perspective
#13
B Juntermanns, A E Cyrek, J Bernheim, J N Hoffmann
BACKGROUND: The postoperative occurrence of lymph fistulas in the groin is a complication that should be taken seriously. These fistulas cause an increase in morbidity and can support local and ascending infections. The treatment of this complication ranges from conservative procedures, such as compression dressings and bed rest to operative treatment with detection of the fistulas and ligation, negative pressure wound therapy (NPWT) or even muscle flaps. This review provides an overview of current therapeutic modalities...
February 8, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28180096/the-frozen-elephant-trunk-technique-european-association-for-cardio-thoracic-surgery-position-and-bologna-experience
#14
REVIEW
Luca Di Marco, Antonio Pantaleo, Alessandro Leone, Giacomo Murana, Roberto Di Bartolomeo, Davide Pacini
Complex lesions of the thoracic aorta are traditionally treated in 2 surgical steps with the elephant trunk technique. A relatively new approach is the frozen elephant trunk (FET) technique, which potentially allows combined lesions of the thoracic aorta to be treated in a 1-stage procedure combining endovascular treatment with conventional surgery using a hybrid prosthesis. These are very complex and time-consuming operations, and good results can be obtained only if appropriate strategies for myocardial, cerebral, and visceral protection are adopted...
February 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28167299/1-25-oh-2d3-and-calcipotriol-its-hypocalcemic-analog-exert-a-long-lasting-anti-inflammatory-and-anti-proliferative-effect-in-synoviocytes-cultured-from-patients-with-rheumatoid-arthritis-and-osteoarthritis
#15
Johanna A Huhtakangas, Johanna Veijola, Sanna Turunen, Anna Karjalainen, Maarit Valkealahti, Tomi Nousiainen, Susanna Yli-Luukko, Olli Vuolteenaho, Petri Lehenkari
OBJECTIVES: We investigated the effects of 1,25-dihydroxy vitamin D3 (1,25(OH)2D3), i.e. biologically active vitamin D and calcipotriol, a vitamin D analog, on growth and secretion of inflammatory mediators in synovial stromal cells (SSC) of patients with rheumatoid arthritis (RA) or osteoarthritis (OA). METHODS: Synovial stromal cells (SSC) isolated during knee prosthesis surgery from four patients with RA and four with OA were exposed to 1,25(OH)2D3 or calcipotriol with or without stimulation of cells with IL-1β or TNF-α...
February 3, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28118180/transcatheter-treatment-of-complex-malfunction-of-tricuspid-valve-prosthesis
#16
Giuseppe Santoro, Giancarlo Scognamiglio, Maria T Palladino, Heba T Mahmoud, Maria G Russo
A 45-year-old man with Ebstein anomaly of the tricuspid valve, previously submitted for tricuspid valve replacement and plication of the atrialized part of the right ventricle, was referred because of signs of increased systemic venous pressure and low output symptoms. Clinical picture was due to severe prosthetic valve stenosis and significant paravalvular regurgitation across an aneurismal dilatation of the atrialized right ventricle. A combined transcatheter approach by Melody valve implantation and Amplatzer Vascular Plug occlusion of the paravalvular leak completely relieved the hemodynamic and clinical findings...
January 23, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28073571/early-clinical-outcomes-of-a-novel-self-expanding-transapical-transcatheter-aortic-valve-bioprosthesis
#17
Michael W A Chu, Rodrigo Bagur, Katie L Losenno, Philip M Jones, Pantelis Diamantouros, Patrick Teefy, Jill J Gelinas, Bob Kiaii
OBJECTIVE: Coronary obstruction remains a challenging complication of transcatheter aortic valve replacement; however, a new self-expanding transapical prosthesis may reduce this risk. The purpose of this study was to evaluate the early 1-year outcomes of patients with low coronary heights who received the Acurate TA bioprosthesis (Symetis, Ecublens, Switzerland). METHODS: Between May 2014 and April 2015, 30 consecutive patients (aged 85 ± 6 years, 63% were female, Society of Thoracic Surgeons score 8...
December 15, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28067197/comparison-of-procedural-and-clinical-outcomes-with-evolut-r-versus-medtronic-corevalve-a-swiss-tavi-registry-analysis
#18
Stephane Noble, Stefan Stortecky, Dik Heg, David Tuller, Raban Jeger, Stefan Toggweiler, Enrico Ferrari, Fabian Nietlispach, Maurizio Taramasso, Francesco Maisano, Jürg Grünenfelder, Peter Jüni, Christoph Huber, Thierry Carrel, Stephan Windecker, Peter Wenaweser, Marco Roffi
AIMS: Data on procedural and clinical outcomes after transcatheter aortic valve implantation (TAVI) with the new generation self-expanding Medtronic Evolut-R prosthesis in comparison with its predecessor, the Medtronic CoreValve, are scarce. METHODS AND RESULTS: In a nationwide, prospective, multi-center cohort study outcomes of consecutive transfemoral TAVI patients treated with the new- generation Medtronic Evolut-R (September 2014 - February 2016) and the Medtronic CoreValve (February 2011 - February 2016) were investigated...
January 10, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28054901/libman-sacks-endocarditis-with-unusual-large-size-vegetation-involving-the-mitral-valve
#19
Amjad Bani Hani, Mahmoud Abu-Abeeleh, Murad M Al Kharabsheh, Lubaba Qabba'ah
Antiphospholipid syndrome (APS) is an autoimmune hypercoagulable disorder characterized by thrombophilia, vascular thrombosis, and recurrent abortions associated with persistent antiphospholipid antibodies. APS may exist in its primary form, or more commonly is found to be associated with variety of rheumatic disorders, such as systemic lupus erythematosus. Cardiac involvement is not an uncommon complication in primary antiphospholipid patients. Libman-Sacks lesions are typically small, sessile, and wart-like, varying in size from 1-4 mm...
December 21, 2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/28049004/microcirculatory-assessment-of-arterial-below-knee-stumps-near-infrared-spectroscopy-vs-transcutaneous-oxygen-tension-a-preliminary-study-in-prosthesis-users
#20
Davy Laroche, José-Luis Barnay, Bastien Tourlonias, Cyril Orta, Christine Obert, Jean-Marie Casillas
OBJECTIVES: To examine metrological properties of near-infrared spectroscopy (NIRS) vs. transcutaneous oxygen tension (TcPO2) for microcirculatory assessment of vascular transtibial stumps at the stabilized period of prosthesis fitting, as a preliminary step before exploring its ability to predict stump healing, considering the previously identified limits of TcPO2 (borderline area between 15 and 35 mmHg). DESIGN: Prospective single-centre observational study. SETTING: University-based rehabilitation center...
December 31, 2016: Archives of Physical Medicine and Rehabilitation
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