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Aortic stent

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https://www.readbyqxmd.com/read/28935349/spinal-ischemia-in-thoracic-aortic-procedures-impact-of-radiculomedullary-artery-distribution
#1
Fabian A Kari, Karin Wittmann, Sonja Krause, Babak Saravi, Luisa Puttfarcken, Katharina Förster, Bartosz Rylski, Sven Maier, Ulrich Göbel, Matthias Siepe, Martin Czerny, Friedhelm Beyersdorf
BACKGROUND: The aim of this study was to assess the influence of thoracic anterior radiculomedullary artery (tARMA) distribution on spinal cord perfusion in a thoracic aortic surgical model. METHODS: Twenty-six pigs (34 ± 3 kg; study group, n = 20; sham group, n = 6) underwent ligation of the left subclavian artery and thoracic segmental arteries. End points were spinal cord perfusion pressure (SCPP), regional spinal cord blood flow (SCBF), and neurologic outcome with an observation time of 3 hours...
September 18, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28935328/valve-in-valve-transcatheter-aortic-valve-implantation-a-novel-approach-to-treat-paravalvular-leak
#2
Pranav Loyalka, Kelsey B Montgomery, Tom C Nguyen, Richard W Smalling, Melissa Howe, Keshava Rajagopal
Enlarging or "cracking" a surgical stented bioprosthetic valve during valve-in-valve transcatheter aortic valve implantation (TAVI) increases orifice area, reducing transvalvular energy losses. We demonstrate that TAVI with valve cracking can be used to treat paravalvular leak (PVL) while providing optimal aortic valve physiology. A 61-year-old woman with a history of aortic valve replacement with a stented bioprosthesis presented with heart failure. Transthoracic echocardiography revealed severe prosthetic aortic valve stenosis with PVL and severe regurgitation...
October 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28934888/influence-of-iliac-stenotic-lesions-on-blood-flow-patterns-near-a-covered-endovascular-reconstruction-of-the-aortic-bifurcation-cerab-stent-configuration
#3
Erik Groot Jebbink, Stefan Engelhard, Guillaume Lajoinie, Jean-Paul P M de Vries, Michel Versluis, Michel M P J Reijnen
PURPOSE: To investigate the effect of distal stenotic lesions on flow patterns near a covered endovascular reconstruction of the aortic bifurcation (CERAB) configuration used in the treatment of aortoiliac occlusive disease. METHOD: Laser particle image velocimetry measurements were performed using in vitro models of the aortic bifurcation with and without a CERAB configuration in place. A hemodynamically nonsignificant stenosis (ΔP: 9 mm Hg), a hemodynamically significant (ΔP: 26 mm Hg) stenosis, and a total occlusion were simulated in the left iliac arteries...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28928619/percutaneous-management-of-complex-acquired-aortic-coarctation-in-an-adult-with-tetralogy-of-fallot-and-pulmonary-atresia
#4
Michael D Seckeler, Emily Lawson, Brent J Barber, Scott E Klewer
We present the case of a female adult with complex cyanotic congenital heart disease who had long-standing thoracic aortic obstruction due to scarring from earlier surgical procedures. She was symptomatic but felt to be too high risk for surgical intervention. With careful planning, she was able to undergo successful stenting of her aorta with subsequent clinical improvement. This case highlights some of the complexities of caring for adults with congenital heart disease and the importance of a thorough understanding of their anatomy and physiology and prior interventions before undertaking interventions...
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28928615/stenting-of-right-ventricular-outflow-tract-in-tetralogy-of-fallot-with-subarterial-ventricular-septal-defect-a-word-of-caution
#5
Jonathan Lee, Sivakumar Sivalingam, Mazeni Alwi
We report a case of Tetralogy of Fallot with severe cyanosis who underwent a successful right ventricular outflow tract stenting. Follow-up echocardiography revealed moderate aortic regurgitation due to the impingement of the stent on the aortic valve. The patient underwent successful surgical correction at which time the stent was removed completely with a resolution of the aortic regurgitation.
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28927570/endovascular-salvage-of-ruptured-taaa-following-stent-graft-distraction-after-tevar-for-type-b-aortic-dissection
#6
Baolei Guo, Weiguo Fu
No abstract text is available yet for this article.
September 16, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28925336/commentary-new-tools-on-the-horizon-to-assess-the-accuracy-of-aortic-stent-graft-deployment
#7
Frederico Bastos Gonçalves, Hence J M Verhagen
No abstract text is available yet for this article.
October 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28922970/use-of-synchrotron-radiation-to-accurately-assess-cross-sectional-area-reduction-of-the-aortic-branch-ostia-caused-by-suprarenal-stent-wires
#8
Zhonghua Sun, Curtise K C Ng
PURPOSE: To compare in vivo the use of synchrotron radiation to computed tomography angiography (CTA) for the measurement of cross-sectional area (CSA) reduction of the aortic branch ostia caused by suprarenal stent-graft wires. METHODS: This study was performed with a Zenith stent-graft placed in a phantom of the human aorta to simulate treatment of abdominal aortic aneurysm. Synchrotron radiation scans were performed using beam energies between 40 and 100 keV and spatial resolution of 19...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28920634/outcomes-analysis-of-stent-graft-repair-for-thoracic-aorta-emergencies
#9
Mourad Boufi, Florent Vernet, Bianca Dona, Olivier Hartung, Anderson D Loundou, Martine Haccoun, Marc Leone, Yves S Alimi
BACKGROUND: This study aimed to identify patient, pathology and procedure-related factors affecting perioperative and mid-term mortality of thoracic aorta emergencies. METHODS: Between 2007 and 2014, patients treated emergently with thoracic stent-graft were retrospectively reviewed. Variables analyzed were: age, renal insufficiency, shock, cardiac arrest, transfer status, pathology, debranching procedures, operation duration, vascular access and European System for Cardiac Operative Risk Evaluation (EuroSCORE)...
December 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28914135/hemodynamic-and-anatomic-predictors-of-renovisceral-stent-graft-occlusion-following-chimney-endovascular-repair-of-juxtarenal-aortic-aneurysms
#10
Rosamaria Tricarico, Yong He, Liza Laquian, Salvatore T Scali, Roger Tran-Son-Tay, Adam W Beck, Scott A Berceli
PURPOSE: To identify anatomic and hemodynamic changes associated with impending visceral chimney stent-graft occlusion after endovascular aneurysm repair (EVAR) with the chimney technique (chEVAR). METHODS: A retrospective evaluation was performed of computed tomography scans from 41 patients who underwent juxtarenal chEVAR from 2008 to 2012 to identify stent-grafts demonstrating conformational changes following initial placement. Six subjects (mean age 74 years; 3 men) were selected for detailed reconstruction and computational hemodynamic analysis; 4 had at least 1 occluded chimney stent-graft...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28903623/endovascular-stenting-of-mid-aortic-syndrome-due-to-takayasu-arteritis
#11
Ali Dogan, Kenan Sever, Emrah Ozdemir, Denyan Mansuroglu, Nuri Kurtoglu
Introduction-patients: Takayasu arteritis may involve various parts of the aorta and its major branches. It leads to occlusive or aneurysmal disease of the vessel. It can be treated either with surgery or percutaneous intervention. We report a successful endovascular treatment of stenosis of the descending thoracic and abdominal aorta in a 19-year-old female. Methods-results-conclusions: Self-expandable nitinol stent was deployed and adequate opening of the aorta was obtained in this patient. Long-term durability of endovascular approach is a matter of debate...
September 13, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28902826/-treatment-of-type-ib-endoleak-after-endoprosthetic-repair-of-infrarenal-aneurysm
#12
A A Karpenko, P V Ignatenko, I V Popova
The article deals with a case report regarding successful surgical management of late type IB endoleak caused by dislocation of the leg of the stent graft, occurring three years after endoprosthetic repair of an aneurysm of the aortic infrarenal portion with the COOK stent graft, aneurysmectomy with prosthetic repair of the right common femoral artery using the linear vascular graft Intergard 8Ч20. The patient underwent surgical treatment: endoprosthetic repair of the iliac branch ZSLE-24-90-90 ZT of the Zenith Spiral AAA stent graft...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28902822/assessing-the-effect-of-endoprosthetic-repair-of-the-thoracic-portion-on-aortic-remodelling-after-surgical-correction-for-debakey-type-i-dissection
#13
V V Bazylev, M G Shmatkov, D A Zakharov, Z A Morozov
OBJECTIVE: The purpose of the study was to evaluate the influence of endoprosthetic repair of the aortic thoracic portion on remodelling of the descending aorta in patients after the surgical stage of correction for DeBakey type I aortic dissection. PATIENTS AND METHODS: The authors retrospectively analysed a group of 12 patients (9 men and 3 women) subjected to endoprosthetic repair of the aortic thoracic portion after previously performed surgical correction of the ascending aorta and its braches...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28895447/early-experience-with-endovascular-aneurysm-sealing-in-combination-with-parallel-grafts-for-the-treatment-of-complex-abdominal-aneurysms-the-ascend-registry
#14
Matt Thompson, Marwan Youssef, Rudolf Jacob, Sebastian Zerwes, Michel Reijnen, Piotr Szopinski, Patrick Berg, Grzegorz Oszkinis, Andrew Holden
PURPOSE: To report the results of the ASCEND Registry of cases involving endovascular aneurysm sealing (EVAS) in combination with chimney grafts (chEVAS) for the treatment of para- and juxtarenal aortic aneurysms (AAA). METHODS: A retrospective, multicenter registry established in 8 vascular centers between 2013 and 2016 recorded the treatment results and follow-up of chEVAS procedures for nonruptured AAAs; data were analyzed using standardized outcome measures...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28893709/novel-application-of-branched-endograft-for-preservation-of-pelvic-circulation
#15
Roy Miler, Jeanwan Kang, Patrick Sowa, Matthew Eagleton, F Ezequiel Parodi
INTRODUCTION/OBJECTIVES: Endovascular repair of a proximal anastomotic pseudoaneurysm of an end-to-side aortobifemoral bypass (ABF) can lead to pelvic ischemia. We present a novel application of branched aortic endograft to repair such pseudoaneurysm while preserving flow into the ABF and native aortoiliac system. METHODS: A 71 year old male with history of aortoiliac occlusive disease resulting in lifestyle limiting claudication was treated with an aortobifemoral bypass in 1999...
September 8, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28893706/hypertension-acute-stent-thrombosis-and-paraplegia-6-months-after-tevar-for-blunt-thoracic-aortic-injury-in-a-22-year-old-patient
#16
O Martinelli, F Faccenna, A Malaj, J Jabbour, S Venosi, R Gattuso, B Gossetti, L Irace
TEVAR is a less invasive option for managing traumatic injuries of the descending aorta in polytraumatized patients. Concerns arise when treating young patients with TEVAR. A 22-year old male was admitted to the Emergency Department following a high-impact road traffic collision. Whole body CT scan documented multiple injuries, including rupture of descending thoracic aorta just below the isthmus. There was no evidence of paraplegia or stroke. We decided to treat him in an endovascular fashion with a Zenith Cook (Cook Incorporated, Bloomington, IN) endograft...
September 8, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28893704/late-complication-after-thoracic-endovascular-aortic-repair-what-is-a-role-of-an-open-surgical-conversion
#17
Lazar Davidovic, Milos Sladojevic, Igor Koncar, Miroslav Markovic, Tulga Ulus, Nikola Ilic, Marko Dragas, Vladimir Cvetic, Zoran Rancic
BACKGROUND: We would like to evaluate causes of Thoracic Endovascular Aortic Repair (TEVAR) failure and conversion to open surgery (COS) in high volume vascular center for open surgery, with low volume TEVAR procedures. METHODS: A total of 8 patients (6 males, mean aged 55.14 years) underwent COS after TEVAR. The indications for conversion to open surgery, intraoperative strategy, as well as early postoperative and mid follow-up results were analyzed. RESULTS: The indications for COS were persistent proximal type I endoleak with progressive aneurysm enlargement in two patients, endoleak type III in one patient, progressive aneurysm enlargement with no endoleak in one patient, stent graft migration in two patients, secondary aorto-esophageal fistula in one patient, secondary aorto-esophageal and aorto-bronchial fistula in one patient, as well as distal progression of the aneurysmal disease in 2 patient...
September 8, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28893490/partial-renal-coverage-in-endovascular-aneurysm-repair-causes-unfavorable-renal-flow-patterns-in-an-infrarenal-aneurysm-model
#18
Lennart van de Velde, Esmé J Donselaar, Erik Groot Jebbink, Johannes T Boersen, Guillaume P R Lajoinie, Jean-Paul P M de Vries, Clark J Zeebregts, Michel Versluis, Michel M P J Reijnen
OBJECTIVE: To achieve an optimal sealing zone during endovascular aneurysm repair, the intended positioning of the proximal end of the endograft fabric should be as close as possible to the most caudal edge of the renal arteries. Some endografts exhibit a small offset between the radiopaque markers and the proximal fabric edge. Unintended partial renal artery coverage may thus occur. This study investigated the consequences of partial coverage on renal flow patterns and wall shear stress (WSS)...
September 8, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28891375/results-of-afx-unibody-stent-graft-implantation-in-patients-with-tasc-d-aortoiliac-lesions-and-coexistent-abdominal-aortic-aneurysms
#19
Pasqualino Sirignano, Wassim Mansour, Laura Capoccia, Chiara Pranteda, Nunzio Montelione, Francesco Speziale
PURPOSE: To describe results of AFX unibody stent-graft treatment for TransAtlantic Inter-Society Consensus (TASC) D aortoiliac occlusive disease (AIOD) with coexistent abdominal aortic aneurysm (AAA). METHODS: A retrospective analysis was conducted of 21 consecutive patients (mean age 73.6±6.4 years; 17 men) with TASC D AIOD plus AAA (diameter >3.5 cm) treated electively using the AFX stent-graft. Common iliac artery (CIA) and external iliac artery (EIA) stenosis or occlusion was reported...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28891190/is-multiple-overlapping-uncovered-stents-technique-suitable-for-aortic-aneurysm-repair
#20
Siang Lin Yeow, Hwa Liang Leo
A computational fluid dynamic model to assess the impact of flow-diverter device on intra-aneurysmal flow in complex aortic aneurysm from the viewpoint of hemodynamics is presented. The aim of this study is to investigate the hemodynamic effects of an endovascular flow-diverter technique using multiple overlapping uncovered stents (MOUS) in the treatment of complex aortic aneurysm involving side branch. The placement of porous barrier such as MOUS across the aneurysm alters the blood flow pattern in the aneurysm sac...
September 11, 2017: Artificial Organs
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