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Paolo Bianchi, Filippo Scalise, Andrea Mortara, Guido Lanzillo, Giuseppe Scardina, Santi Trimarchi, Gianfranco Parati, Valerio Tolva
The aim of this report is to describe the imaging and successful treatment of an acute shrinkage of the Ovation Abdominal Stent Graft System. The Ovation Prime system utilizes a polymer-filled sealing ring that is cast in situ at the margin of the aneurysm; however, the residual endograft inner volume after ring filling may reduce volume and graft flow. Nevertheless, there are no reports about severe complications using the Ovation Prime system. A 75-year-old male presented to our hospital for acute lower limb ischemia...
February 2017: Aorta (Stamford, Conn.)
Marcus R Kret, Kenneth Tran, Jason T Lee
BACKGROUND: Implications of aortic neck dilatation following endovascular aneurysm repair (EVAR) are unclear. Previous studies are limited to comparisons of individual, early generation devices. We compared aortic neck dilatation among contemporary stent grafts. METHODS: We reviewed preoperative and postoperative computed tomographic angiograms for EVARs performed from 2008-2014. Images were analyzed using 3-dimensional centerline reconstructions. Aortic neck diameter was measured in orthogonal planes at and 10 mm below the lowest renal artery...
August 2017: Annals of Vascular Surgery
Gianmarco de Donato, Francesco Setacci, Luciano Bresadola, Patrizio Castelli, Roberto Chiesa, Nicola Mangialardi, Giovanni Nano, Carlo Setacci
PURPOSE: To compare the use of the Ovation stent-graft according to the ≥7-mm neck length specified by the original instructions for use (IFU) vs those treated off-label (OL) for necks <7 mm long. METHODS: A multicenter retrospective registry (TriVascular Ovation Italian Study) database of all patients who underwent endovascular aneurysm repair with the Ovation endograft at 13 centers in Italy was interrogated to identify patients with a minimum computed tomography (CT) follow-up of 24 months, retrieving records on 89 patients (mean age 76...
April 1, 2017: Journal of Endovascular Therapy
Y Law, Y C Chan, S Wk Cheng
INTRODUCTION: The use of a proximal Palmaz stent is a well-recognised technique to treat proximal endoleak in endovascular aortic repair. This study aimed to report the effectiveness and safety of an intra-operative Palmaz stent for immediate type 1a endoleak in Hong Kong patients. METHODS: This case series was conducted at a tertiary hospital in Hong Kong. In a cohort of 494 patients who underwent infrarenal endovascular aortic repair from July 1999 to September 2015, 12 (2...
December 2016: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
Benjamin Valente-Acosta, Manuel Alfonso Baños-González, Marco Antonio Peña-Duque, Marco Antonio Martínez-Ríos, Leslie Quintanar-Trejo, Gad Aptilon-Duque, Mirthala Flores-García, David Cruz-Robles, Guillermo Cardoso-Saldaña, Aurora de la Peña-Díaz
Background. Thrombin has been implicated as a key molecule in atherosclerotic progression. Clinical evidence shows that thrombin generation is enhanced in atherosclerosis, but its role as a risk factor for coronary atherosclerotic burden has not been proven in coronary artery disease (CAD) stable patients. Objectives. To evaluate the association between TAT levels and homocysteine levels and the presence of coronary artery disease diagnosed by coronary angiography in patients with stable CAD. Methods and Results...
2016: Cardiology Research and Practice
Efstratios Georgakarakos, George Trellopoulos, Nikolaos Kontopodis, Dimitrios Tsetis, Chris V Ioannoub
No abstract text is available yet for this article.
June 2016: Journal of Cardiovascular Surgery
Nicolas Aristokleous, Nikolaos G Kontopodis, Konstantinos Tzirakis, Christos V Ioannou, Yannis Papaharilaou
The current study aims to computationally evaluate the hemodynamic impact of a novel sealing mechanism employed by a recently developed endograft (Ovation TriVascular Stent-Graft System) for endovascular aneurysm repair. The exploitation of two inflatable O-rings to achieve sealing may be advantageous in terms of accommodating challenging anatomies, but comes at a price of a marked inflow stenosis. Here, four representative patient cases of inflow stenosis ranging from 30 to 80 % were analyzed. Lumen surface models were constructed from 1 month post-operative computed tomography images and then used to numerically compute the complex endograft flow field...
October 2016: Medical & Biological Engineering & Computing
Ender Oner, Korhan Erkanli, Ibrahim Faruk Akturk, Unal Aydin, Okan Akinci, Aydin Yildirim
Posttraumatic infrarenal aortic pseudoaneurysms are rare and potentially lethal lesions. We report the case of a 32-year-old man presenting with infrarenal aortic pseudoaneurysm eight months after being stabbed in the back and right flank. His pseudoaneurysm was close to the iliac bifurcation, so we decided to deploy a bifurcated endovascular graft stent, the TriVascular Ovation endovascular stent. Imaging one month after the procedure revealed no endoleak and slight shrinkage of the pseudoaneurysm.
2015: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
O Tautu, S Chirila, M Dorobantu
OBJECTIVE: To evaluate arterial stiffness in young patients from a very high CV risk country presented with a first acute ST-elevated myocardial infarction and to analyse association between increased arterial stiffness and the severity of coronary artery disease. DESIGN AND METHOD: Consecutive patients with age less than 45 years admitted in our department for a first acute STEMI between January 2013 - January 2014 were enrolled in the study after signing a written informed consent...
June 2015: Journal of Hypertension
C V Ioannou, N Kontopodis, E Kehagias, A Papaioannou, A Kafetzakis, G Papadopoulos, D Pantidis, D Tsetis
OBJECTIVE: To present our experience with the Ovation Abdominal Stent Graft System (TriVascular Inc., Santa Rosa, CA) during endovascular aneurysm repair (EVAR) and compare results according to the type of anaesthesia. METHODS: We conducted a single-centre retrospective study including patients who underwent EVAR using the Ovation endograft between May 2011 and July 2014. Outcome was evaluated regarding pre-, peri- and immediate postoperative and follow-up measures...
July 2015: British Journal of Radiology
Elias Kehagias, Nikolaos Kontopodis, Dimitrios Tsetis, Christos V Ioannou
Endovascular aneurysm repair has become the preferred method to treat abdominal aortic aneurysms (AAAs). The Ovation TriVascular Stent-Graft system introduces a unique concept of separation of the metal (stent) and fabric (graft) portion of the endograft's main body to facilitate delivery through ultra-low profile 14F devices. In the setting of a narrow distal aneurysmal lumen, usually due to the presence of thrombus, deployment of this endograft may be complicated by folding and collapse of the (unsupported by a stent) aortic body or limbs, making catheterization and ballooning impossible...
July 2015: Annals of Vascular Surgery
Anna Maria Ierardi, Dimitrios Tsetis, Christos Ioannou, Domenico Laganà, Chiara Floridi, Mario Petrillo, Antonio Pinto, Gabriele Piffaretti, Gianpaolo Carrafiello
PURPOSE: This study evaluated 2 years of follow-up of the Ovation Abdominal Stent Graft System (TriVascular Inc., Santa Rosa, CA, USA) for endovascular repair (EVAR) of abdominal aortic aneurysms (AAAs). MATERIALS AND METHODS: This retrospective multicentre study included 36 patients (median age, 73.6 year) with AAAs (mean diameter, 5.65 cm) treated with the Ovation stent graft and followed up for at least 2 years. Safety and effectiveness of the Ovation stent graft were evaluated...
June 2015: La Radiologia Medica
Z Krajcer
Endovascular aneurysm repair (EVAR) techniques and technologies have rapidly advanced over the last two decades. The basic premise of EVAR is to durably exclude flow from the aneurysmal sac without exerting untoward effects on the non-diseased anatomy by using minimally invasive surgical techniques. However, these fundamental components have not yet been perfected with traditional stent grafts and remain important areas for further EVAR refinement. Latest-generation stent grafts are in development to accommodate these therapeutic goals...
June 2015: Journal of Cardiovascular Surgery
E Alexanderson, M M Martínez-Aguilar, L E Juárez-Orozco, A Jordán-Ríos, S Maury-Ordaz, E Magaña-Bailon, A Meave
No abstract text is available yet for this article.
October 2014: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
E Georgakarakos, G Trellopoulos, N Kontopodis, D Tsetis, C V Ioannou
No abstract text is available yet for this article.
March 20, 2014: Journal of Cardiovascular Surgery
Giovanni Nano, Daniela Mazzaccaro, Silvia Stegher, Maria Teresa Occhiuto, Giovanni Malacrida, Domenico G Tealdi, Antonino Alberti, Pietro Volpe
OBJECTIVE: We describe our initial experience with the use of the TriVascular Ovation endograft system for the treatment of abdominal aortic aneurysms (AAA). METHODS: We retrospectively reviewed data from patients treated for AAA using the Ovation endograft at two institutions from January 2011 to September 2012. Main outcomes included primary success, survival, complications, and device-related events. The mean follow-up period was 10 months (range 1-22 months)...
March 12, 2014: Journal of Cardiothoracic Surgery
George S Georgiadis, Dimitrios Charalampidis, Efstratios I Georgakarakos, George A Antoniou, George Trellopoulos, Theodosia Vogiatzaki, Miltos K Lazarides
Advances in abdominal aortic aneurysm (AAA) endograft device technology have contributed to improved outcomes and durability of endovascular aortic aneurysm repair (EVAR), even in complex infrarenal aortic anatomies. However, stent graft failure secondary to endoleaks, migration, endotension and sac enlargement are persistent problems that can result in aneurysm rupture following EVAR.A symptomatic infrarenal AAA (4mm proximal neck) was treated initially with an Ovation Prime™ device (TriVascular, Inc., Santa Rosa, CA) in an off-label fashion, leading to type Ia endoleak moderately reduced by additional proximal neck ballooning...
February 2014: International Journal of Artificial Organs
Gianpaolo Carrafiello, Annamaria Ierardi, Gabriele Piffaretti, Nicola Rivolta, Chiara Floridi, Adel Aswad, Francesco Della Valle, C V Ioannou, Claudio Gentilini, Dimitrious Tsetis, Patrizio Castelli, Renzo Dionigi
PURPOSE OF THE STUDY: To evaluate the mid-term safety and effectiveness of a novel stent graft for treatment of abdominal aortic aneurysm (AAA). METHODS: Thirty-three patients with AAA (20 males and 13 females; mean age: 71.3 y) were treated with the Ovation™ Abdominal Stent Graft System (TriVascular, Inc., Santa Rosa, CA, USA). Indications for endovascular aneurysm repair: AAA ≥ 5.5 cm, neck ≥ 7 mm, angulation ≤ 60° and with an inner wall diameter of no less than 16 mm and no greater than 30 mm; the presence of neck calcification and thrombosis is not much of a problem in this device because aortic seal is achieved with 2 polymer-filled sealing rings and the fixation by means of a suprarenal stent with 8 pairs of anchors...
2013: International Journal of Surgery
G de Donato, F Setacci, P Sirignano, G Galzerano, M P Borrelli, L di Marzo, C Setacci
When Juan Parodi implanted an endograft in a human body for the first time on September 7, 1990 in Buenos Aires, Argentina, the delivery system of the handmade device was primitive, extremely rigid, and had a bulky profile of 27 French (F). Since then, stent-graft technology has evolved rapidly, limitations of earlier-generation devices have been overtaken, and endovascular aneurysm repair (EVAR) eligibility has increased enormously. Nevertheless (still) challenging aortoiliac anatomy such as short and complex proximal aortic neck seal zones and narrow access vessels are responsible for EVAR ineligibility in up to 50% of cases...
February 2014: Journal of Cardiovascular Surgery
Alexander Massmann, Ferdinand Serracino-Inglott, Arno Buecker
PURPOSE: To report the first experience using the chimney technique in combination with the latest-generation low-profile stent-graft to seal abdominal aortic aneurysms having a very short neck (proximal sealing zone) and difficult access due to very small iliac vessels. MATERIALS AND METHODS: Use of an ultra low-profile 14F delivery aortic stent-graft system (Ovation; Trivascular, Santa Rosa, CA) with chimneys to the lowermost renal arteries in two patients who were not anatomically suitable for endovascular aortic aneurysm repair (EVAR) and too frail for open surgery...
April 2014: Cardiovascular and Interventional Radiology
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