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Dacron graft

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https://www.readbyqxmd.com/read/29310555/mechanical-circulatory-support-for-the-failing-fontan-conversion-to-assisted-single-ventricle-circulation-preliminary-observations
#1
Syed M Peer, Kristopher B Deatrick, Thomas J Johnson, Jonathan W Haft, Francis D Pagani, Richard G Ohye, Edward L Bove, Alvaro Rojas-Peña, Ming-Sing Si
BACKGROUND: Mechanical circulatory support (MCS) of a failing Fontan circulation remains challenging. We hypothesized that MCS can be provided by converting the Fontan circulation into a mechanically assisted single ventricle parallel circulation (MASVC). METHODS: A porcine model of functionally univentricular circulation was created under cardiopulmonary bypass (CPB) by performing an atrial septectomy, tricuspid valvectomy, and interrupting antegrade pulmonary blood flow...
January 2018: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29290476/feasibility-study-of-a-novel-thoraco-abdominal-aortic-hybrid-device-spider-graft-in-a-translational-pig-model
#2
REVIEW
Eike S Debus, Tilo Kölbel, Anna Duprée, Günter Daum, Harleen L Sandhu, Daniel Manzoni, Sabine H Wipper
BACKGROUND: The hybrid SPIDER-graft consists of a proximal descending aortic stent graft and a conventional six branched Dacron graft for open abdominal aortic repair. Technical feasibility with regard to avoiding thoracotomy and extracorporeal circulation (ECC) during thoraco-abdominal aortic hybrid repair and peri-procedural safety of this novel device are unknown. MATERIAL AND METHODS: This was a feasibility and safety study in domestic pigs (75-85 kg). The abdominal aorta including iliac bifurcation, left renal artery, and visceral arteries were exposed via retroperitoneal access...
December 28, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29259580/rapid-in-vitro-quantification-of-s-aureus-biofilms-on-vascular-graft-surfaces
#3
Monika Herten, Theodosios Bisdas, Dennis Knaack, Karsten Becker, Nani Osada, Giovanni B Torsello, Evgeny A Idelevich
Objectives: Increasing resistance of microorganisms and particularly tolerance of bacterial biofilms against antibiotics require the need for alternative antimicrobial substances. S. aureus is the most frequent pathogen causing vascular graft infections. In order to evaluate the antimicrobial efficacy, quantification of the bacterial biofilms is necessary. Aim of the present study was the validation of an in vitro model for quantification of bacterial biofilm on vascular graft surfaces using three different assays...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29234610/a-new-root-strengthening-technique-for-acute-aortic-dissection-with-a-weakened-aortic-root-the-neo-adventitia-technique
#4
Ji Yong Kim, In Ha Kim, Woon Heo, Ho-Ki Min, Do Kyun Kang, Youn-Ho Hwang, Hee Jae Jun
Background: Dissection flaps in acute type A aortic dissection typically extend into the root, most frequently into the non-coronary sinus (NCS). The weakened root can be susceptible not only to surgical trauma, but also to future dilatation because of its thinner layers. Herein, we describe a new technique that we named the "neo-adventitia" technique to strengthen the weakened aortic root. Methods: From 2012 to 2016, 27 patients with acute type A aortic dissection underwent supracommissural graft replacement using our neo-adventitia technique...
December 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29234609/outcomes-of-open-repair-of-mycotic-aortic-aneurysms-with-in-situ-replacement
#5
Hyo-Hyun Kim, Do Jung Kim, Hyun-Chel Joo
Background: Mycotic aortic aneurysms are rare and life-threatening. Unfortunately, no established guidelines exist for the treatment of patients with mycotic aortic aneurysms. The purpose of this study was to evaluate the midterm outcomes of the open repair of mycotic thoracic and thoracoabdominal aneurysms and suggest a therapeutic strategy. Methods: From 2006 to 2016, 19 patients underwent open repair for an aortic aneurysm. All infected tissue was extensively debrided and covered with soft tissue...
December 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29232299/the-axillary-intra-aortic-balloon-pump-as-a-bridge-to-recovery-allows-early-ambulation-in-long-term-use-case-series-and-literature-review
#6
Nnamdi Nwaejike, Andre Y Son, Chetan B Patel, Jacob N Schroder, Carmelo A Milano, Mani A Daneshmand
We evaluated the feasibility, tolerability, and efficacy of a strategy for transaxillary artery intra-aortic balloon pump placement for extended mechanical circulatory support of patients with postcardiotomy shock as a bridge to recovery. Patients requiring prolonged intra-aortic balloon pump support for postcardiotomy heart failure were identified. Intra-aortic balloon pump was tunneled through a 6-mm Dacron graft anastomosed to the right axillary artery. The intra-aortic balloon pump catheter is advanced under fluoroscopic guidance into the descending thoracic aorta...
November 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29197751/dacron-graft-as-replacement-to-dissected-aorta-a-three-dimensional-fluid-structure-interaction-analysis
#7
R Jayendiran, B M Nour, A Ruimi
Aortic dissection (AD) is a serious medical condition characterized by a tear in the intima, the inner layer of the aortic walls. In such occurrence, blood is being diverted to the media (middle) layer and may result in patient death if not quickly attended. In the case where the diseased portion of the aorta needs to be replaced, one common surgical technique is to use a graft made of Dacron, a synthetic fabric. We investigate the response of a composite human aortic segment-Dacron graft structure subjected to blood flow using the three-dimensional fluid-structure-interaction (FSI) capability in Abaqus...
November 26, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29197602/continuous-flow-perfused-cadaver-model-for-endovascular-training-research-and-development
#8
Amrita Sarkar, Richa Kalsi, Joseph D Ayers, Charles B Drucker, Vaidehi Kaushal, William Sutton, Robert S Crawford
BACKGROUND: Endovascular simulation employing computer, animal, and static models are common and useful adjuncts for teaching endovascular procedures and developing novel, complex endovascular techniques. Unfortunately, these models lack realistic haptic feedback and thus do not faithfully replicate many of the technical challenges associated with clinical endovascular procedures (e.g., arterial calcification, rigidity, and stenosis). We sought to develop a realistic and reproducible perfused cadaver model for endovascular training, device development and research...
November 29, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29162367/arterial-reconstructions-for-chronic-lower-extremity-ischemia-in-preadolescent-and-adolescent-children
#9
Jonathan L Eliason, Dawn M Coleman, Adam Gumushian, James C Stanley
OBJECTIVE: Chronic lower extremity ischemia in pediatric patients is uncommon. The intent of this study was to better define the arterial reconstructive options and their long-term durability in preadolescent and adolescent children having clinically relevant arterial occlusions affecting the lower extremity. METHODS: The medical records of 33 consecutive pediatric patients who underwent lower extremity revascularization for chronic ischemia at the University of Michigan from 1974 to 2016 were reviewed...
November 18, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29161440/novel-arch-fenestrated-stent-graft-for-acute-stanford-type-a-aortic-dissection-with-open-antegrade-implantation
#10
Qing Zhou, Yunxing Xue, Hailong Cao, Jun Pan, Qiang Wang, Fudong Fan, Dongjin Wang
OBJECTIVES: The best surgical strategy for acute Stanford Type A aortic dissection (aTAAD) involving the arch remains controversial. Here, we report on the satisfactory results following aTAAD repair using a novel arch fenestrated stent graft. METHODS: From December 2014 to December 2015, 42 aTAAD patients (27 male and 15 female) underwent ascending aorta replacement and fenestrated stent graft implantation. The fenestrated stent graft was implanted into the true lumen of the aortic arch and proximal descending aorta, with the fenestration opening located at the ostia of 3 head vessels in the arch...
November 17, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29160630/synthetic-grafts-in-the-treatment-of-ruptured-anterior-cruciate-ligament-of-the-knee-joint
#11
REVIEW
Wojciech Satora, Aleksandra Królikowska, Andrzej Czamara, Paweł Reichert
The anterior cruciate ligament (ACL) is cited as the most frequently injured ligament in the knee. The standard treatment of ACL injury remains ligament reconstruction followed by a postoperative physiotherapeutic procedure. During the reconstruction, the torn ligament can be replaced with an autograft or an allograft. A synthetic ligament is also one of the available graft options. Synthetic grafts in ruptured ACL treatment have been used as scaffolds, stents, or prostheses. The story of using synthetic materials in ACL deficient knee treatment started in the beginning of the 20th century with the usage of silk and silver fibers...
January 2017: Polimery W Medycynie
https://www.readbyqxmd.com/read/29153821/custom-made-e-vita-graft-for-frozen-elephant-trunk-with-arch-first-technique
#12
Luca Bertoglio, Alessandro Castiglioni, Alessandro Grandi, Tommaso Cambiaghi, Alessandro Verzini, Roberto Chiesa
A novel custom-made E-Vita Open prosthesis (JOTEC GmbH, Hechingen, Germany) has been designed with 2 additional side branches. The first one, the reperfusion branch, allows distal aortic perfusion after the collar anastomosis of a frozen elephant trunk repair has been performed. The second one, the debranching branch, permits reimplantation of any configuration of supraaortic debranching to the dacron graft. This modified graft provides two main advantages: first, combined with prior carotid-subclavian bypass and bilateral axillary perfusion, it allows continuous bihemispheric antegrade perfusion and arch-first technique under mild hypothermia (32°C); second, it grants distal aortic reperfusion after distal anastomosis completion performed under moderate hypothermia (28°C)...
December 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29076377/investigating-the-performance-of-four-specific-types-of-material-grafts-and-their-effects-on-hemodynamic-patterns-as-well-as-on-von-mises-stresses-in-a-grafted-three-layer-aortic-model-using-fluid-structure-interaction-analysis
#13
Shahrokh Rahmani, Amin Jarrahi, Mahdi Navidbakhsh, Mansour Alizadeh
One of the important parts of the cardiac system is aorta which is the fundamental channel and supply of oxygenated blood in the body. Diseases of the aorta represent critical cardiovascular bleakness and mortality around the world. This study aims at investigation of hemodynamic parameters in a two-dimensional axisymmetric model of three-layer grafted aorta using fluid-structure interaction (FSI). It assumes that a damaged part of aorta, which may happen as a result of some diseases like aneurysm, dissection and post-stenotic dilatation, is replaced with a biomaterial graft...
October 27, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/29071389/-graft-aneurysms-as-long-term-complication-of-polyester-prostheses-and-their-management-brief-review-based-on-a%C3%A2-systematic-review-of-the-literature
#14
REVIEW
U Barth, K Wasseroth, F Meyer
INTRODUCTION: A material-associated true aneurysm after previous use of a vascular prosthesis for arterial reconstruction mostly in peripheral arterial occlusion disease (PAOD) is considered a rare but serious complication. AIM AND METHOD: The aim of the compact brief review was to describe the rare finding of a true aneurysm of a prosthesis and its diagnosis-specific care including a representative scientific case report, based on selected topic-related references from the medical literature as well as the specific experiences obtained from the successful clinical management in single cases...
October 25, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/29049702/aortic-root-and-hemiarch-replacement-in-a-patient-with-loeys-dietz-and-hypoplastic-left-heart-syndromes
#15
Eltayeb Mohamed Ahmed, Alexandru Ciprian Visan, Graham Stuart, Serban Stoica
A 15-year-old patient with hypoplastic left heart syndrome underwent 3-stage palliation by the age of 3 years. He was later diagnosed with Loeys-Dietz syndrome. On follow-up imaging, the neoaorta was dilated at 50 mm in diameter. He underwent aortic root replacement with a composite valve conduit and hemiarch replacement, using a boat-shaped Dacron graft. The uncertainty of how univentricular circulation would tolerate long bypass time steered us away from a total arch replacement. His postoperative recovery was uneventful...
October 11, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29034043/suture-line-dehiscence-after-endovascular-aneurysm-repair-in-a-patient-with-marfan-syndrome
#16
Hirofumi Kasahara, Norimasa Haijima, Takashi Hachiya
A 68-year-old man with Marfan syndrome developed de-novo leakage after endovascular aneurysm repair of a Dacron graft. Findings at subsequent reoperation suggested that the rebound force on the endograft generated by marked longitudinal deformation in the Dacron graft may have placed stress on the suture line, leading to partial dehiscence. The Dacron graft seemed to provide a stable proximal landing zone. However, the strong tendency of some endograft devices to return to their original shape may apply stress that affected weakened regions of the native aorta...
June 25, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/28962499/valve-sparing-aortic-root-replacement-in-a-bicuspid-aortic-valve-with-papillary-fibroelastoma
#17
Stoyan Kondov, Fabian Alexander Kari, Martin Czerny, Matthias Siepe
We present our surgical strategy in a patient with a bicuspid aortic valve Type I (R/N), aortic root aneurysm and papillary fibroelastoma on the aortic valve's cusp. He underwent valve-sparing aortic root replacement (David V Procedure); we also removed the papillary fibroelastoma from the fused right- and non-coronary cusp. In this case, we used a 34-mm straight Dacron graft for root replacement and an aortic annulus downsized to 30 mm. We use Hegar dilatators for the intraoperative measurement of the aortic annulus...
October 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28955701/sequential-hybrid-repair-of-aorta-and-bilateral-common-iliac-arteries-secondary-to-chronic-aortic-dissection-with-extensive-aneurysmal-degeneration-in-a-marfan-patient
#18
Carlos A Hinojosa, Javier E Anaya-Ayala, Hugo Laparra-Escareno, Rene Lizola, Adriana Torres-Machorro
Marfan syndrome is a connective tissue disorder associated with aortic dissection, aneurysmal degeneration and rupture. These cardiovascular complications represent the main cause of mortality, therefore repair is indicated. We present a 35-year-old woman who experienced acute onset of chest pain. Her imaging revealed a chronic DeBakey type I dissection with aortic root dilation and descending thoracic aneurysmal degeneration. She underwent a Bentall procedure and endovascular exclusion of the descending thoracic aortic aneurysm...
September 2017: Vascular Specialist International
https://www.readbyqxmd.com/read/28932749/vascular-tissue-engineering-effects-of-integrating-collagen-into-a-pcl-based-nanofiber-material
#19
Ulf Bertram, Dominik Steiner, Benjamin Poppitz, Dirk Dippold, Katrin Köhn, Justus P Beier, Rainer Detsch, Aldo R Boccaccini, Dirk W Schubert, Raymund E Horch, Andreas Arkudas
The engineering of vascular grafts is a growing field in regenerative medicine. Although numerous attempts have been made, the current vascular grafts made of polyurethane (PU), Dacron®, or Teflon® still display unsatisfying results. Electrospinning of biopolymers and native proteins has been in the focus of research to imitate the extracellular matrix (ECM) of vessels to produce a small caliber, off-the-shelf tissue engineered vascular graft (TEVG) as a substitute for poorly performing PU, Dacron, or Teflon prostheses...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28928918/arterial-thoracic-outlet-syndrome-secondary-to-hypertrophy-of-the-anterior-scalene-muscle
#20
Erion Qaja, Sara Honari, Robert Rhee
Thoracic outlet syndrome (TOS) was first introduced in literature by Peet et al. in 1956. Since then is has been studied extensively and subcategorized into at least four closely related syndrome. Neurogenic TOS due to the compression of brachial plexus, arterial TOS in cases of compression of the subclavian artery, venous TOS in cases of compression of the subclavian vein, and non-specific type of TOS. Neurogenic TOS is by far the most common consisting of 95% of the cases, followed by venous and lastly arterial...
August 2017: Journal of Surgical Case Reports
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