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https://www.readbyqxmd.com/read/28712577/bacterial-adherence-to-graft-tissues-in-static-and-flow-conditions
#1
Tiago Rafael Veloso, Jorien Claes, Soetkin Van Kerckhoven, Bartosz Ditkowski, Luis G Hurtado-Aguilar, Stefan Jockenhoevel, Petra Mela, Ramadan Jashari, Marc Gewillig, Marc F Hoylaerts, Bart Meyns, Ruth Heying
BACKGROUND: Various conduits and stent-mounted valves are used as pulmonary valve graft tissues for right ventricular outflow tract reconstruction with good hemodynamic results. Valve replacement carries an increased risk of infective endocarditis (IE). Recent observations have increased awareness of the risk of IE after transcatheter implantation of a stent-mounted bovine jugular vein valve. This study focused on the susceptibility of graft tissue surfaces to bacterial adherence as a potential risk factor for subsequent IE...
June 16, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28710578/four-dimensional-flow-mri-of-stented-versus-stentless-aortic-valve-bioprostheses
#2
Floortje van Kesteren, Laurens W Wollersheim, Jan Baan, Aart J Nederveen, Abdullah Kaya, S Matthijs Boekholdt, Bas A de Mol, Pim van Ooij, R Nils Planken
OBJECTIVES: To evaluate aortic velocity, wall shear stress (WSS) and viscous energy loss (EL) of stented and stentless bioprostheses using 4D flow MRI 1 year after surgical aortic valve replacement. METHODS: For this cross-sectional study 28 patients with stented (n = 14) or stentless (n = 14) bioprosthesis underwent non-contrast-enhanced 4D-flow MRI at 1.5 T. Analyses included a comparison of velocity, WSS and EL in the ascending aorta during peak systole for both spatially averaged values and a comparison of local differences using per-voxel analysis...
July 14, 2017: European Radiology
https://www.readbyqxmd.com/read/28705072/short-and-long-term-results-after-endovascular-management-of-vascular-complications-during-transfemoral-aortic-valve-implantation
#3
Thomas Heger, Stefanie Strauß, Erwin Blessing, Martin Andrassy, Christian Erbel, Oliver J Müller, Emmanuel Chorianopoulos, Sven Pleger, Florian Leuschner, Grigorios Korosoglou, Raffi Bekeredjian, Hugo A Katus, Britta Vogel
Background Vascular injury and access site complications in the contemporary setting of transcatheter aortic valve implantation (TAVI) are known to be associated with increased mortality and morbidity. The aim of our study was to analyse the feasibility and safety of percutaneous treatment of such vascular complications using a stent graft. Methods Between January 2010 and April 2013, 36 TAVI patients developed severe access site complications and underwent subsequent interventional treatment with a covered stent...
July 14, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28705054/radiofrequency-perforation-of-the-pulmonary-valve-an-efficient-low-cost-solution
#4
Stephen C Brown, Bjorn Cools, Derize Boshoff, Ruth Heying, Benedicte Eyskens, Marc Gewillig
Objective The aim of the study was to assess the feasibility of using commonly available catheterization laboratory equipment for radiofrequency perforation of the pulmonary valve in patients with pulmonary atresia and intact ventricular septum. Methods The system (off-label use for all items) is made up of a co-axial telescopic arrangement consisting of a 0.014" PT 2 ™ coronary guidewire, for insulation inside a 2.7-F microcatheter which has an inner lumen of 0.021". The microcatheter was passed via a standard 4-F right coronary catheter to just below the atretic pulmonary valve...
July 14, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28698423/-early-structural-valve-deterioration-of-trifecta-biological-prosthesis-report-of-a-case
#5
Atsushi Tamura, Takamichi Yoshizaki, Sho Kusadokoro
Trifecta valve is a 3rd-generation, stented bioprosthesis which is made from one bovine pericardial sheet. A 77-years-old male patient had undergone combine aortic valve replacement (AVR) using a 23-mm Trifecta valve and ascending aorta replacement for severe aortic valve regurgitation and ascending aorta aneurysm. The postoperative period was uneventful. However, he presented with dyspnea on effort and severe aortic valve regurgitation 31 months after operation. Re-do AVR with a new bioprosthetic valve was performed via 2nd sternotomy...
July 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28691909/fracturing-mechanics-before-valve-in-valve-therapy-of-small-aortic-bioprosthetic-heart-valves
#6
Peter Johansen, Henrik Engholt, Mariann Tang, Rasmus F Nybo, Per D Rasmussen, Jens Erik Nielsen-Kudsk
AIMS: Patients with degraded bioprosthetic heart valves (BHV) who are not candidates for valve replacement may benefit from transcatheter valve-in-valve (VIV) therapy. However, at smaller sized surgical BHV the resultant orifice may become too narrow. To overcome this, the valve frame can be fractured by a high-pressure balloon prior to VIV. However, knowledge on fracture pressures and mechanics are prerequisites. The aim of this study is to identify the fracture pressures needed in BHV, and to describe the fracture mechanics...
July 11, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28683504/initial-experience-with-the-transapical-access-for-tevar
#7
Andreas H Mahnken, Marc Irqsusi, Walter Hundt, Rainer G Moosdorf
Background The endovascular approach has become a mainstay in the treatment of aortic aneurysms. While the transfemoral approach is most commonly used, it is often inaccessible due to a vascular pathology, such as occlusion, tortuosity or heavy calcifications. The transapical access provides an alternative approach. The goal of this study is to report the feasibility of the transapical approach for total endovascular repair of thoracic aortic aneurysms (TEVAR). Methods Three patients with thoracic aortic aneurysms with inaccessible femoral arteries underwent TEVAR via the transapical approach...
August 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28673810/repeated-mechanical-thrombectomy-in-the-same-intracranial-artery-segment
#8
Herbert Tejada Meza, Maria Rosario Barrena Caballo, Santiago Guelbenzu Morte, Roberto Martínez García, Javier Marta Moreno
We report a patient with an important scenario that may arise in the management of an acute ischemic stroke: the need for a repeated mechanical thrombectomy in the same intracranial artery segment. The patient had a history of atrial fibrillation and a mechanical mitral valve replacement. In her first stroke, she had an occlusion of the proximal segment of the right middle cerebral artery; 58 days later, she presented with an occlusion in the same segment of that cerebral artery. In both instances, the thrombus was extracted by a stent retriever with good clinical and radiographic results...
June 30, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28667405/utilizing-hybrid-techniques-to-maximize-clinical-outcomes-in-congenital-heart-disease
#9
REVIEW
David W Bearl, Gregory A Fleming
PURPOSE OF REVIEW: The past couple of decades have brought tremendous advances to the field of pediatric and adult congenital cardiology. Recent collaborations between interventional cardiologists and cardiac surgeons have sparked novel innovative hybrid procedures that provide potentially safer, faster, and less invasive alternatives to the management of many diseases. This paper will review the most recent advances in hybrid interventions in the field of pediatric and adult congenital cardiology...
August 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28651809/interventional-cardiology-what-s-new
#10
REVIEW
Brian A Scansen
Interventional cardiology in veterinary medicine continues to expand beyond the standard 3 procedures of patent ductus arteriosus occlusion, balloon pulmonary valvuloplasty, and transvenous pacing. Opportunities for fellowship training; advances in equipment, including high-resolution digital fluoroscopy, real-time 3-dimensional transesophageal echocardiography, fusion imaging, and rotational angiography; ultrasound-guided access and vascular closure devices; and refinement of techniques, including cutting and high-pressure ballooning, intracardiac and intravascular stent implantation, septal defect occlusion, transcatheter valve implantation, and hybrid approaches, are likely to transform the field over the next decade...
June 23, 2017: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/28633269/stenting-and-reimplanting-disconnected-pulmonary-artery-in-tetralogy-of-fallot
#11
Harikrishnan K N Kurup, Giedrius Baliulis, Marcus P Haw, Joseph J Vettukattil
Tetralogy of Fallot with absent pulmonary valve syndrome (TOF/APV) is a rare congenital malformation. Although pulmonary artery (PA) anomalies have been observed in TOF, its association with disconnected PA is extremely rare. We report successful stenting of the disconnected left PA in a 3-year-old boy with TOF/APV followed by surgical reimplantation. The significance of this transcatheter intervention for guidance during surgery and the importance of visualizing a ductal stump on angiography as an indicator of disconnected PA are discussed...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28626545/case-of-acute-st-segment-elevation-myocardial-infarction-in-infective-endocarditis-management-with-intra-coronary-stenting
#12
Ghulam Murtaza, Zia Ur Rahman, Puja Sitwala, Vatsal Ladia, Bhavesh Barad, Kais Albalbissi, Timir K Paul, Vijay Ramu
Embolic events from infective endocarditis can cause acute coronary syndrome. Mortality rate is high and optimal management might be different from those chosen in setting of classic atherosclerotic coronary artery disease. We present a case of 56-year-old male who had received 5 weeks of antibiotics for aortic valve endocarditis and developed acute ST segment elevation myocardial infarction in hospital settings. Interestingly, patient had recent left heart catheterization that was normal. This was recognized as embolic event from sterile vegetation...
June 7, 2017: Clinics and Practice
https://www.readbyqxmd.com/read/28622944/effect-of-ascending-aortic-dimension-on-acute-procedural-success-following-self-expanding-transcatheter-aortic-valve-replacement-a-multicenter-retrospective-analysis
#13
Yoshio Maeno, Sung-Han Yoon, Yigal Abramowitz, Yusuke Watanabe, Hasan Jilaihawi, Mao-Shin Lin, Jason Chan, Rahul Sharma, Hideyuki Kawashima, Sharjeel Israr, Hiroyuki Kawamori, Masaki Miyasaka, Tanya Rami, Yoshio Kazuno, Geeteshwar Mangat, Mohammad Kashif, Tarun Chakravarty, Hsien-Li Kao, Michael Kang-Yin Lee, Mamoo Nakamura, Ken Kozuma, Wen Cheng, Raj R Makkar
AIMS: Self-expanding (SE) valves are characterized with long stent frame design and the radial force of the device exists both in the inflow and outflow level. Therefore, we hypothesized that device success of SE-valves may be influenced by ascending aortic dimensions (AAD). The aim of this study was to determine the influence of AAD on acute device success rates following SE transcatheter aortic valve replacement (TAVR). METHODS & RESULTS: In 4 centers in the United States and Asia, 214 consecutive patients underwent SE-TAVR...
June 3, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28621639/outcome-of-the-double-j-stent-placement-in-pediatric-kidney-transplant-a-single-center-experience
#14
Hakan Sözen, Onur Özen, Kibriya Fidan, Oğuz Söylemezoğlu, Aydın Dalgıç
OBJECTIVES: Double J stent placement at kidney transplant may reduce stenosis or leakage complication rates. However, placement may also increase risk for early urinary tract infection (ie, < 3 mo after transplant). In children, the usefulness of double J stent placement is not well defined. MATERIALS AND METHODS: We analyzed retrospective data from children who received transplants at the Gazi University Transplantation Center and Pediatric Nephrology (Ankara, Turkey) for outcomes related to double J stents...
June 16, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28605548/early-and-mid-term-aortic-remodelling-after-the-frozen-elephant-trunk-technique-for-retrograde-type-a-acute-aortic-dissection-using-the-new-japanese-j-graft-open-stent-graft
#15
Yoshitaka Yamane, Naomichi Uchida, Shingo Mochizuki, Tomokuni Furukawa, Kazunori Yamada
OBJECTIVES: We previously performed the frozen elephant trunk (FET) technique for acute type A aortic dissection to try to improve the long-term prognosis. In this study, we report the mid-term results of the FET technique for treating retrograde type A acute aortic dissection using a new device, the J Graft open stent graft (JOSG). METHODS: Between January 2008 and December 2015, 24 patients (mean age: 59.3 ± 13.9 years) underwent total arch replacement with the FET technique using the JOSG for retrograde type A acute aortic dissection...
June 9, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28600328/multicenter-experience-evaluating-transcatheter-pulmonary-valve-replacement-in-bovine-jugular-vein-contegra-right-ventricle-to-pulmonary-artery-conduits
#16
Brian H Morray, Doff B McElhinney, Younes Boudjemline, Marc Gewillig, Dennis W Kim, Elena K Grant, Martin L Bocks, Mary H Martin, Aimee K Armstrong, Darren Berman, Saar Danon, Mark Hoyer, Jeffrey W Delaney, Henri Justino, Athar M Qureshi, Jeffery J Meadows, Thomas K Jones
BACKGROUND: Follow-up of transcatheter pulmonary valve replacement (TPVR) with the Melody valve has demonstrated good short-term and long-term outcomes, but there are no published studies focused on valve performance in the Contegra bovine jugular vein conduit. METHODS AND RESULTS: This is a retrospective, multicenter study of the short- and intermediate-term outcomes of Melody TPVR within the Contegra conduit in the right ventricle to pulmonary artery position...
June 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28583682/outcome-of-stent-graft-implantation-for-treatment-of-access-site-bleeding-after-transfemoral-transcatheter-aortic-valve-replacement
#17
Adi Segal, Moshe Y Flugelman, Nader Khader, Ronen Rubinshtein, Idit Lavi, Ron Karmeli, Ayman Jubran, Avinoam Shiran, Ronen Jaffe
Vascular complications are common after transcatheter aortic valve replacement (TAVR) and are associated with increased morbidity and mortality. Stent graft implantation enables percutaneous treatment of access site bleeding; however, the efficacy and durability and of this approach are unknown. We studied the immediate outcome of stent graft implantation for control of access site bleeding and the need for repeat vascular interventions after stenting, in a cohort of consecutive patients with severe symptomatic aortic stenosis who underwent transfemoral TAVR...
August 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28583512/comprehensive-management-of-congenital-choanal-atresia
#18
Pierre Brihaye, Isabelle Delpierre, Andrée De Villé, Anne-Britt Johansson, Dominique Biarent, Anne-Laure Mansbach
OBJECTIVES: To present results of a one-stage minimally invasive surgical procedure for congenital choanal atresia (CCA). Seven outcome measures were applied. MATERIALS AND METHODS: Retrospective study conducted between 1999 and 2015. The same endonasal endoscopic approach with multiflaps and no stenting was used on 36 children. The flaps were attached with fibrine glue. There were 50% unilateral and 50% bilateral cases, 70% primary and 30% secondary surgery. The mean age at primary surgery for bilateral atresia was 10 days and for unilateral atresia 4 years...
July 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28580611/isolated-pulmonary-regurgitation-causes-decreased-right-ventricular-longitudinal-function-and-compensatory-increased-septal%C3%A2-pumping-in-a-porcine-model
#19
Sascha Kopic, Sigurdur S Stephensen, Einar Heiberg, Håkan Arheden, Philipp Bonhoeffer, Mads Ersbøll, Niels Vejlstrup, Lars Søndergaard, Marcus Carlsson
AIM: Longitudinal ventricular contraction is a parameter of cardiac performance with predictive power. Right ventricular longitudinal function is impaired in patients with free pulmonary regurgitation (PR) following corrective surgery for Tetralogy of Fallot (TOF). It remains unclear whether this is a consequence of the surgical repair, or whether it is inherent to PR. The aim of this study was to assess the relationship between longitudinal, lateral and septal pumping in a porcine model of isolated PR...
June 5, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28570525/full-root-aortic-valve-replacement-by-stentless-aortic-xenografts-in-patients-with-small-aortic-roots
#20
Reza Tavakoli, Peiman Jamshidi, Max Gassmann
In patients with small aortic roots who need an aortic valve replacement with biological valve substitutes, the implantation of the stented pericardial valve might not meet the functional needs. The implantation of a too-small stented pericardial valve, leading to an effective orifice area indexed to a body surface area less than 0.85 cm(2)/m(2), is regarded as prosthesis-patient mismatch (PPM). A PPM negatively affects the regression of left ventricular hypertrophy and thus the normalization of left ventricular function and the alleviation of symptoms...
May 21, 2017: Journal of Visualized Experiments: JoVE
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