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artificial aortic valve

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https://www.readbyqxmd.com/read/27863908/role-of-echocardiography-for-catheter-based-management-of-valvular-heart-disease
#1
REVIEW
Takahiro Shiota
Catheter-based treatment of valvular heart disease, such as transvalvular aortic valve replacement (TAVR) or mitral clip procedure, has been increasingly accepted as a treatment choice for the past several years. Such new treatment options have been changing the management of patients with valvular heart disease drastically while socio-economic factors regarding their application need to be taken into consideration. The use of echocardiography, including transesophageal echocardiography (TEE), for such catheter-based treatments is essential for the success of the procedures...
November 15, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27642739/-an-unexpected-cause-of-dyspnea-and-degradation-of-performance
#2
Peter Seizer, Michaela Rockenstiehl, Suzanne Fateh-Moghadam, Susanne Haen, Ferruh Artunc, Martin R Müller, Azadeh Ebrahimi, Reimer Riessen, Meinrad Gawaz, Falko Fend, Michael Haap
HISTORY AND ADMISSION FINDINGS: A 55-year old man suffers from progressive, distinctive dyspnoea and physical weakness since 5 days. Due to ST-segment changes in the ECG and a positive troponin-test, the primary care physician initiates an hospitalization. INVESTIGATIONS: After admission, the laboratory tests confirm the elevated troponin-values, and show additionally elevated pro-brain-natriuric-peptide-values. The coronary angiography presents a highly reduced left ventricular function, an aortic insufficiency III° and a coronary heart disease...
September 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27625084/comparison-of-the-outcomes-of-modified-artificial-chordae-technique-for-mitral-regurgitation-through-right-minithoracotomy-or-median-sternotomy
#3
Zhao-Lei Jiang, Xiao-Yuan Feng, Nan Ma, Jia-Quan Zhu, Li Zhang, Fang-Bao Ding, Chun-Rong Bao, Ju Mei
BACKGROUND: Right minithoracotomy (RM) has been proven to be a safe and effective approach for mitral valve surgery, but the differences of artificial chordae technique between RM and median sternotomy (MS) were seldom reported. Here, we compared the outcomes of modified artificial chordae technique for mitral regurgitation (MR) through RM or MS approaches. METHODS: One hundred and eighteen consecutive adult patients who received mitral valve repair with artificial chordae and annuloplasty for MR through RM (n = 58) or MS (n = 60) from January 2006 to January 2015 were analyzed...
2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27333215/improved-transcatheter-aortic-valve-implantation-for-aortic-regurgitation-using-a-snare-loop-assisted-device-the-first-preclinical-experience
#4
Xiang Chen, Ben Zhang, Yufeng Zhu, Hongwen Tan, Xianxian Zhao, Yongwen Qin, Junbo Ge
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is an effective percutaneous treatment for high-risk patients with severe symptomatic aortic stenosis. However, TAVI is rendered less effective in patients with noncalcified aortic valve disease because noncalcified aortic valves lack an anchor site for the implanted stent, causing the stent to relocate to an unexpected position. In this study, we developed an improved TAVI with a snare loop-assisted device, and evaluated the feasibility and safety of this strategy in noncalcified aortic valve disease...
August 2016: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27328925/-early-experiences-with-the-sorin-perceval-s-arteficial-biological-valve
#5
László Csepregi, Gábor Bari, Miklós Bitay, Zoltán Hegedűs, Sándor Varga, Gábor Iglói, Antal Szabó-B, István Hartyánszky, Gábor Bogáts
OBJECTIVES: We examined the Sorin Perceval S artificial biological valve implantation techniques, and present the initial experiences in our unit. METHODS: In the last 1.5 years, 27 patients had been implanted with Sorin Perceval S biological arteficial valve due to aortic valve disease. The device was mainly used in high-risk patients, in reoperative circumstances, in cases of calcified aortic root, and in elderly patients. RESULTS: The valve implantation time, aortic cross clamp time is shorter, but the risk of the operation cannot be eliminated entirely, because of the high risk patients' severe comorbidities...
June 2016: Magyar Sebészet
https://www.readbyqxmd.com/read/27256439/-clinical-treatment-of-infective-endocarditis-with-vegetations-in-pregnant-women-and-the-outcomes-of-gestation
#6
L Chu, J Zhang, Y N Li, X Meng, Y Y Liu
OBJECTIVE: To investigate the clinical treatment of infective endocarditis with vegetations in pregnant women and the outcomes of the gestation. METHODS: Nine cases of pregnant women diagnosed as infective endocarditis with vegetations in Beijing Anzhen Hospital, Capital Medical University from January 2001 to October 2015 were enrolled in retrospective analysis. Consultations were held by doctors from department of obstetrics, anesthesiology, cardiology, cardial surgery and extracorporeal circulation to decide the individualized treatment plan for the 9 cases of pregnant women after admissions...
May 25, 2016: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/27187768/is-transcatheter-aortic-valve-implantation-of-living-tissue-engineered-valves-feasible-an-in-vitro-evaluation-utilizing-a-decellularized-and-reseeded-biohybrid-valve
#7
Fabian Koenig, Jang-Sun Lee, Bassil Akra, Trixi Hollweck, Erich Wintermantel, Christian Hagl, Nikolaus Thierfelder
Transcatheter aortic valve implantation (TAVI) is a fast-growing, exciting field of invasive therapy. During the last years many innovations significantly improved this technique. However, the prostheses are still associated with drawbacks. The aim of this study was to create cell-seeded biohybrid aortic valves (BAVs) as an ideal implant by combination of assets of biological and artificial materials. Furthermore, the influence of TAVI procedure on tissue-engineered BAV was investigated. BAV (n=6) were designed with decellularized homograft cusps and polyurethane walls...
August 2016: Artificial Organs
https://www.readbyqxmd.com/read/27154327/mental-health-status-of-patients-with-mechanical-aortic-valves-with-ventricular-assist-devices-and-after-heart-transplantation
#8
Claudia Heilmann, Josefine Kaps, Armin Hartmann, Wolfgang Zeh, Anna Lena Anjarwalla, Friedhelm Beyersdorf, Matthias Siepe, Andreas Joos
OBJECTIVES: Mental health is a complex construct, in which emotional aspects and quality of life are central. It has been assessed in patients after heart transplantation (HTX) and occasionally in those with ventricular assist devices (VADs). However, there are no studies that compare patients with primary HTX with those with HTX ending VAD support. Evidence for patients with mechanical aortic valve replacement is also limited. We compared mental outcome for these four groups for the first time...
August 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27106920/modified-transiliac-artery-approach-for-transcatheter-aortic-valve-implantation
#9
Hiroto Kitahara, Akihiro Yoshitake, Kazuma Okamoto, Kentaro Hayashida, Keiichi Fukuda, Hideyuki Shimizu
We present a safe and effective method of transcatheter aortic valve implantation using an artificial graft anastomosed to the common iliac artery. A 10-mm woven polyethylene terephthalate graft is anastomosed to the common iliac artery. A guide wire and an expandable sheath are inserted through the graft, and bleeding from the puncture site is controlled by three tourniquets circled around the graft. Using this technique, we can bring the graft outside of the retroperitoneal space, allowing easy manipulation of the guide-wire and sheath, unimpeded by the constraints of the deep and narrow retroperitoneal space...
April 22, 2016: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/27017778/-early-detection-of-iliac-artery-rupture-by-sudden-steep-reduction-of-regional-saturation-of-oxygen-at-the-ipsilateral-foot-during-transcatheter-aortic-valve-implantation-a-case-report
#10
Shun Saito, Hisanari Ishii
An 80-year-old woman with severe aortic stenosis was planned to undergo transcatheter aortic valve implantation (TAVI) under general anesthesia. Due to severe stenosis of the femoral arteries, the left iliac artery was cut down and a 16 F Edwards SAPIEN Expandable Sheath (eSheath : Edwards Lifesciences, Irvine, CA) was inserted into the artery smoothly. After balloon aortic valvuloplasty (BAV), an artificial valve was tried to deploy but stuck in the middle of eSheath. Suddenly regional saturation of oxygen (rSO2) at the ipsilateral foot decreased steeply without other significant hemodynamic instabilities...
February 2016: Masui. the Japanese Journal of Anesthesiology
https://www.readbyqxmd.com/read/26913684/aortic-valve-calcium-score-for-paravalvular-aortic-insufficiency-avcs-ii-study-in-transapical-aortic-valve-implantation
#11
Martin Haensig, Lukas Lehmkuhl, Axel Linke, Philipp Kiefer, Chirojit Mukherjee, Gerhard Schuler, Matthias Gutberlet, Friedrich-Wilhelm Mohr, David Holzhey
BACKGROUND: Transapical aortic valve implantation (TAAVI) has evolved into a routine procedure for select high-risk patients. The aim was to study the impact of native aortic valve calcification on paravalvular leaks in cardiac contrast-enhanced computed tomography (CT). METHODS: The degree and distribution of valve calcification were quantified using an Aortic Valve Calcium Score (AVCS) for each cusp separately (3mensio Valves). To reduce an artificial increase of the AVCS due to the presence of contrast material, we used thresholds for density [mean aortic density + 2*SD] and volume [0, 3, 5, 25, and 50 mm3] of calcification...
2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/26888572/native-valve-disease-in-patients-with-non-valvular-atrial-fibrillation-on-warfarin-or-rivaroxaban
#12
Günter Breithardt, Helmut Baumgartner, Scott D Berkowitz, Anne S Hellkamp, Jonathan P Piccini, Yuliya Lokhnygina, Jonathan L Halperin, Daniel E Singer, Graeme J Hankey, Werner Hacke, Richard C Becker, Christopher C Nessel, Kenneth W Mahaffey, Robert M Califf, Keith A A Fox, Manesh R Patel
OBJECTIVE: To compare the characteristics and outcomes of patients with atrial fibrillation (AF) and aortic stenosis (AS) with patients with AF with mitral regurgitation (MR) or aortic regurgitation (AR) and patients without significant valve disease (no SVD). METHODS: Using Rivaroxaban Once-Daily, Oral, Direct Factor Xa Inhibition Compared With Vitamin K Antagonism for Prevention of Stroke and Embolism Trial in Atrial Fibrillation (ROCKET AF) data, we analysed efficacy and safety outcomes, adjusting hazard ratios (HRs) for potential confounders using Cox regression analysis...
July 1, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/26792931/hypertrophic-obstructive-cardiomyopathy-the-mitral-valve-could-be-the-key
#13
Filip Dulguerov, Cecilia Marcacci, Clara Alexandrescu, K M John Chan, Gilles D Dreyfus
OBJECTIVES: As we strongly believe that treating the mitral valve abnormalities is a key feature of hypertrophic obstructive cardiomyopathy (HOCM), we have systematically corrected both the anterior and posterior leaflet (PL) size and geometry. We have analysed our immediate results and at mid-term follow-up. METHODS: From March 2010 until June 2015, 16 patients with HOCM underwent surgical correction of obstruction. The mean age was 51 years old (range, 32-72 years)...
July 2016: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/26702274/artificial-aortic-valve-dysfunction-due-to-pannus-and-thrombus-different-methods-of-cardiac-surgical-management
#14
Stanisław Ostrowski, Anna Marcinkiewicz, Anna Kośmider, Andrzej Walczak, Radosław Zwoliński, Ryszard Jaszewski
INTRODUCTION: Approximately 60 000 prosthetic valves are implanted annually in the USA. The risk of prosthesis dysfunction ranges from 0.1% to 4% per year. Prosthesis valve dysfunction is usually caused by a thrombus obstructing the prosthetic discs. However, 10% of prosthetic valves are dysfunctional due to pannus formation, and 12% of prostheses are damaged by both fibrinous and thrombotic components. The authors present two patients with dysfunctional aortic prostheses who were referred for cardiac surgery...
September 2015: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/26678683/mechanical-versus-biological-aortic-valve-replacement-strategies
#15
REVIEW
D Reineke, F Gisler, L Englberger, T Carrel
Aortic valve replacement (AVR) is the most frequently performed procedure in valve surgery. The controversy about the optimal choice of the prosthetic valve is as old as the technique itself. Currently there is no perfect valve substitute available. The main challenge is to choose between mechanical and biological prosthetic valves. Biological valves include pericardial (bovine, porcine or equine) and native porcine bioprostheses designed in stented, stentless and sutureless versions. Homografts and pulmonary autografts are reserved for special indications and will not be discussed in detail in this review...
2016: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/26489666/aortic-root-morphology-a-paradigm-for-successful-reconstruction
#16
Denis A Berdajs
Aortic root (AoR) components provide synchronous and precise 3D deformation of the aortic root during the cardiac cycle in order to ensure closure and opening of the three leaflets over a lifetime. Any deviation from the natural 3D morphology, such as with AoR annulus dilatation, enlarged sinuses and/or dilatation of the sinotubular junction, as in the case of ascending aortic dilatation, may result in disruption of the natural AoR function. Surgical treatment of AoR pathology has two modalities: the replacement of the aortic valve by artificial prosthesis or by preservation of the three leaflets and reconstruction of the aortic root components...
January 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/26469252/-surgery-for-infective-endocarditis-involving-valve-annulus
#17
Kazuyuki Daitoku, Kaoru Hattori, Wakako Fukuda, Masahito Minakawa, Ikuo Fukuda
Surgical treatment for isolated infective endocarditis( IE) has been improving over the last 2 decades. However, surgery for complicated IE such as disruption of paravalvular structure remains a challenge. The aim of this retrospective study is to evaluate our surgical results for IE with paravalvular structural disruption. From January 2002 to March 2015, we performed cardiac surgery for 68 patients who suffered from IE. Thirteen patients had paravalvular abscess and fistula. Valve disruptions were seen in aortic valve in 10 patients [2 fistulas from right coronary cuspid to right atrium or ventricle, 3 abscess formation from right coronary cuspid to interventricular septum, 1 abscess formation from left coronary cuspid to anterior mitral leaflet, 1 left ventricle to right atrium communication from non-coronary cuspid (NCC), 2 abscess formation under NCC and 1 circular annulas infection]...
November 2015: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/26329705/-extracardiac-aorto-right-atrial-fistula-after-aortic-valve-replacement
#18
Kazuhisa Matsumoto, Goichi Yotsumoto, Hiroyuki Yamamoto, Yosuke Hisashi, Koji Tao, Kosuke Mukaihara, Yoshiya Shigehisa, Tomoyuki Matsuba, Yukinori Moriyama, Yutaka Imoto
The development of a fistula between the aorta and the right atrium is a relatively rare but well-documented complication after cardiac surgery and proximal aortic dissection, and has a high mortality rate if it is not diagnosed adequately and surgically treated without delay. We report a rare case of extracardiac aorta-right atrial fistula. An 86-year-old woman underwent aortic valve replacement via median sternotomy. Two weeks after surgery, the upper median skin incision reopened, which exposed the sternum and revealed purulent discharge inside the wound...
August 2015: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/26321265/midterm-outcome-of-mitral-valve-repair-with-artificial-chordae-for-only-posterior-leaflet-disease-comparison-with-the-resectional-technique-in-a-single-institute
#19
Hideaki Takai, Hiroaki Tanabe, Tsuyoshi Yamabe, Kenichi Sasaki, Hisayoshi Suma
OBJECTIVE: We compared the midterm results of mitral valve repair with and without leaflet resection, and revealed the effectiveness of this technique, even for in the posterior leaflet alone. PATIENTS: From August 2002 to March 2014, a total of 306 mitral valve repairs were carried out at our hospital. Of these patients, 50 cases did not undergo leaflet resection (Artificial Chordae; Group A) and 56 cases underwent leaflet resection (Resectional; Group R). There were no significant differences in the preoperative profiles...
2016: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/26295833/in-vitro-model-of-a-fibrosa-layer-of-a-heart-valve
#20
Soumen Jana, Amir Lerman, Robert D Simari
The fibrosa layer of a cardiac aortic valve is composed mostly of a dense network of type I collagen fibers oriented in circumferential direction. This main layer bears the tensile load and responds to the high stress on a leaflet. The inner fibrosa layer is also the site of pathophysiologic changes that result in valvular dysfunction, including stenosis and regurgitation. In vitro studies of these changes are limited by the absence of a substrate that mimics the circumferentially oriented structure of the fibrosa layer...
September 16, 2015: ACS Applied Materials & Interfaces
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