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calcific aortic stenosis

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https://www.readbyqxmd.com/read/27931555/risk-factor-profile-of-calcific-aortic-stenosis
#1
I Sathyamurthy, Shaji Alex, K Kirubakaran, G Sengottuvelu, K N Srinivasan
BACKGROUND: Calcific aortic stenosis and coronary artery disease share common risk factors. In some of the previous studies statins have been used to retard the progression of aortic stenosis, but the results were inconsistent. METHODS: One hundred and ten patients of CAS above the age of 40 years have undergone clinical, biochemical and echocardiographic evaluation. Coronary angiograms were done in 66% of them. RESULTS: Male to female ratio was 2:1...
November 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27930358/histological-findings-and-predictors-of-cerebral-debris-from-transcatheter-aortic-valve-replacement-the-alster-experience
#2
Tobias Schmidt, Ozan Akdag, Peter Wohlmuth, Thomas Thielsen, Dimitry Schewel, Jury Schewel, Hannes Alessandrini, Felix Kreidel, Ralf Bader, Maria Romero, Elena Ladich, Renu Virmani, Ulrich Schäfer, Karl-Heinz Kuck, Christian Frerker
BACKGROUND: Histopathological analyses of debris captured by a cerebral protection system during transcatheter aortic valve replacement have been reported, but the origin of the captured debris was not determined and risk factors were not defined. METHODS AND RESULTS: Embolic debris was analyzed from 322 filters used in a dual-cerebral-filter protection system implemented during transcatheter aortic valve replacement for 161 patients (mean age 81 years, 82 male [51%], logistic EuroSCORE 19% [interquartile range 12-31%])...
November 10, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27911025/effect-of-balloon-expandable-transcatheter-aortic-valve-replacement-positioning-a-patient-specific-numerical-model
#3
Matteo Bianchi, Gil Marom, Ram P Ghosh, Harold A Fernandez, James R Taylor, Marvin J Slepian, Danny Bluestein
Transcatheter aortic valve replacement (TAVR) has emerged as a life-saving and effective alternative to surgical valve replacement in high-risk, elderly patients with severe calcific aortic stenosis. Despite its early promise, certain limitations and adverse events, such as suboptimal placement and valve migration, have been reported. In the present study, it was aimed to evaluate the effect of various TAVR deployment locations on the procedural outcome by assessing the risk for valve migration. The deployment of a balloon-expandable Edwards SAPIEN valve was simulated via finite element analysis in a patient-specific calcified aortic root, which was reconstructed from CT scans of a retrospective case of valve migration...
December 2016: Artificial Organs
https://www.readbyqxmd.com/read/27887725/a-calcified-polymeric-valve-for-valve-in-valve-applications
#4
Ahmad Falahatpisheh, Daisuke Morisawa, Taraz T Toosky, Arash Kheradvar
The prevalence of aortic valve stenosis (AS) is increasing in the aging society. More recently, novel treatments and devices for AS, especially transcatheter aortic valve replacement (TAVR) have significantly changed the therapeutic approach to this disease. Research and development related to TAVR require testing these devices in the calcified heart valves that closely mimic a native calcific valve. However, no animal model of AS has yet been available. Alternatively, animals with normal aortic valve that are currently used for TAVR experiments do not closely replicate the aortic valve pathology required for proper testing of these devices...
November 16, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27881062/antihypertensive-treatments-in-patients-affected-by-aortic-valve-stenosis
#5
Paolo Poggio, Gianluca Folesani, Giuseppe M Raffa, Paola Songia, Vincenzo Valenti, Veronika Myasoedova, Alessandro Parolari
Systemic hypertension and aortic valve stenosis (AVS) are both age-related diseases. Severe aortic stenosis affects ≈2% to 5% of adults age > 65 years. Systemic hypertension (HTN) is a frequent comorbidity in patients with AVS and is coexistent for a longer period of time before AVS is treated. Essential systemic hypertension, per se, plays an important role in the creation of lesions on the aortic side of the valve, the region of higher exposure to tension stress. The subsequent endothelial defect represents the principal site of inflammatory process and oxidative stress, leading to aortic sclerosis and calcification...
November 23, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27879282/sex-related-discordance-between-aortic-valve-calcification-and-hemodynamic-severity-of-aortic-stenosis-is-valvular-fibrosis-the-explanation
#6
Louis Simard, Nancy Côté, François Dagenais, Patrick Mathieu, Christian Couture, Sylvain Trahan, Yohan Bossé, Siamak Mohammadi, Sylvain Pagé, Philippe Joubert, Marie-Annick Clavel
RATIONALE: Calcific aortic stenosis (AS) is characterized by calcium deposition in valve leaflets. However, women present lower aortic valve calcification (AVC) loads than men for the same AS hemodynamic severity. OBJECTIVE: We thus aimed to assess sex-differences in aortic valve fibro-calcific remodelling. METHODS AND RESULTS: One hundred and twenty-five patients underwent Doppler-echocardiography and multidetector-computed-tomography within 3 months prior to aortic valve replacement...
November 22, 2016: Circulation Research
https://www.readbyqxmd.com/read/27866029/understanding-the-structural-features-of-symptomatic-calcific-aortic-valve-stenosis-a-broad-spectrum-clinico-pathologic-study-in-236-consecutive-surgical-cases
#7
Daniela Galli, Roberta Manuguerra, Rodolfo Monaco, Laura Manotti, Matteo Goldoni, Gabriella Becchi, Cecilia Carubbi, Giulia Vignali, Nicola Cucurachi, Tiziano Gherli, Francesco Nicolini, Roberto Lorusso, Marco Vitale, Domenico Corradi
BACKGROUND: With age, aortic valve cusps undergo varying degrees of sclerosis which, sometimes, can progress to calcific aortic valve stenosis (AVS). To perform a retrospective clinico-pathologic investigation in patients with calcific AVS. METHODS: We characterized and graded the structural remodeling in 236 aortic valves (200 tricuspid and 36 bicuspid) from patients with calcific AVS (148 males; average 72years); possible relationships between general/clinical/echocardiographic characteristics and the histopathologic changes were explored...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27844188/correlation-and-predictive-value-of-aortic-root-calcification-markers-with-coronary-artery-calcification-and-obstructive-coronary-artery-disease
#8
Christian Tesche, Carlo N De Cecco, Andrew Stubenrauch, Brian E Jacobs, Akos Varga-Szemes, Sheldon E Litwin, B Devon Ball, Moritz Baquet, David Jochheim, Ullrich Ebersberger, Richard R Bayer, Ellen Hoffmann, Daniel H Steinberg, U Joseph Schoepf
OBJECTIVE: To evaluate the correlation between aortic root calcification (ARC) markers and coronary artery calcification (CAC) derived from coronary artery calcium scoring (CACS) and their ability to predict obstructive coronary artery disease (CAD). METHODS: We retrospectively analyzed 189 patients (47% male, age 60.3 ± 11.1 years) with an intermediate probability of CAD who underwent clinically indicated CACS and coronary CT angiography (CCTA). ARC markers [aortic root calcium score (ARCS) and volume (ARCV)] were calculated and compared to CAC markers: coronary artery calcium score (CACS), volume (CACV), and mass (CACM)...
November 14, 2016: La Radiologia Medica
https://www.readbyqxmd.com/read/27815266/role-for-galectin-3-in-calcific-aortic-valve-stenosis
#9
J Rafael Sádaba, Ernesto Martínez-Martínez, Vanessa Arrieta, Virginia Álvarez, Amaya Fernández-Celis, Jaime Ibarrola, Amaia Melero, Patrick Rossignol, Victoria Cachofeiro, Natalia López-Andrés
BACKGROUND: Aortic stenosis (AS) is a chronic inflammatory disease, and calcification plays an important role in the progression of the disease. Galectin-3 (Gal-3) is a proinflammatory molecule involved in vascular osteogenesis in atherosclerosis. Therefore, we hypothesized that Gal-3 could mediate valve calcification in AS. METHODS AND RESULTS: Blood samples and aortic valves (AVs) from 77 patients undergoing AV replacement were analyzed. As controls, noncalcified human AVs were obtained at autopsy (n=11)...
November 4, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27785133/application-of-the-cardiocel-bovine-pericardial-patch-a-preliminary-report
#10
Michał Sobieraj, Edyta Cudak, Wojciech Mrówczyński, Tomasz K Nałęcz, Przemysław Westerski, Michał Wojtalik
INTRODUCTION: Animal pericardial patches are widely used in adult and pediatric cardiac surgery. A search is ongoing for a new material with optimal surgical properties that will reduce intraoperative bleeding and the occurrence of restenosis, calcification, and pseudoaneurysms in long-term observation. One product of interest is the CardioCel bovine pericardial patch. AIM: Evaluation of the short-term results of CardioCel bovine pericardial patch implantation during pediatric cardiac surgery...
September 2016: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/27761705/emerging-therapeutic-options-for-lowering-of-lipoprotein-a-implications-for-prevention-of-cardiovascular-disease
#11
Michael B Boffa
PURPOSE OF REVIEW: Elevated plasma concentrations of lipoprotein(a) (Lp(a)) are an independent and causal risk factor for cardiovascular diseases including coronary artery disease, ischemic stroke, and calcific aortic valve stenosis. This review summarizes the rationale for Lp(a) lowering and surveys relevant clinical trial data using a variety of agents capable of lowering Lp(a). RECENT FINDINGS: Contemporary guidelines and recommendations outline populations of patients who should be screened for elevated Lp(a) and who might benefit from Lp(a) lowering...
December 2016: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/27752169/-control-study-of-total-percutaneous-access-with-preclose-technique-versus-open-femoral-artery-exposure-for-endovascular-aneurysm-repair
#12
J J Jiang, H K Qing, X M Zhang, X M Zhang, W Li, C Y Shen, Q L Li, Y Jiao
OBJECTIVE: To compare total percutaneous access using preclose technique with femoral artery cut-down in endovascular aneurysm repair (EVAR) and assess the safety and feasibility of preclose technique. METHODS: In the study, 81 cases undergoing EVAR from Dec. 2011 to Nov. 2014 in Peking University People's Hospital were retrospectively reviewed. Preoperative CT angiography (CTA) showed presence of infrarenal abdominal aortic aneurysm or descending aortic aneurysm in all the cases...
October 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/27751324/tavi-for-aortic-regurgitation-india-s-first-case-with-corevalve-evolut-r
#13
A B Gopalamurugan, K Murali, B Jyotsana, A Jacob, V V Bashi
Transcatheter Aortic Valve Implantation (TAVI) is a well-described treatment for symptomatic calcific severe aortic stenosis. However, TAVI technology is being increasingly used around the world to treat selected cases of severe aortic regurgitation (AR). One of the main limitations of using TAVI technology for AR is the lack of calcification, which is common in such cases. This makes anchoring of a TAVI prosthesis to the aortic annulus difficult and risks displacement or embolization. However, with the availability of recapturable and repositionable TAVI technologies, these limitations have been overcome to a large extent...
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27738476/a-rare-complication-of-spinal-cord-ischemia-following-endovascular-aneurysm-repair-of-an-infrarenal-abdominal-aortic-aneurysm-with-arteriosclerosis-obliterans-report-of-a-case
#14
Koichi Morisaki, Takuya Matsumoto, Yutaka Matsubara, Kentaro Inoue, Yukihiko Aoyagi, Daisuke Matsuda, Shinichi Tanaka, Jun Okadome, Yoshihiko Maehara
We herein report a case of a rare complication of spinal cord ischemia (SCI) following endovascular aneurysm repair (EVAR). Computed tomography showed stenosis and calcification of bilateral iliac arteries and a saccular aneurysm of the terminal aorta. Paraplegia occurred soon after balloon angioplasty of iliac arteries and EVAR. Cerebrospinal fluid drainage was not performed because the patient was on dual antiplatelet drugs. The patient was treated with intravenous methylpredonisolone and naloxone; however, this did not improve his paraplegia...
2016: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/27733431/optimization-and-reproducibility-of-aortic-valve-18f-fluoride-positron-emission-tomography-in-patients-with-aortic-stenosis
#15
Tania A Pawade, Timothy R G Cartlidge, William S A Jenkins, Philip D Adamson, Phillip Robson, Christophe Lucatelli, Edwin J R Van Beek, Bernard Prendergast, Alan R Denison, Laura Forsyth, James H F Rudd, Zahi A Fayad, Alison Fletcher, Sharon Tuck, David E Newby, Marc R Dweck
BACKGROUND: 18F-Fluoride positron emission tomography (PET) and computed tomography (CT) can measure disease activity and progression in aortic stenosis. Our objectives were to optimize the methodology, analysis, and scan-rescan reproducibility of aortic valve 18F-fluoride PET-CT imaging. METHODS AND RESULTS: Fifteen patients with aortic stenosis underwent repeated 18F-fluoride PET-CT. We compared nongated PET and noncontrast CT, with a modified approach that incorporated contrast CT and ECG-gated PET...
October 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27716559/patients-with-calcific-aortic-stenosis-exhibit-systemic-molecular-evidence-of-ischemia-enhanced-coagulation-oxidative-stress-and-impaired-cholesterol-transport
#16
Laura Mourino-Alvarez, Montserrat Baldan-Martin, Laura Gonzalez-Calero, Carlos Martinez-Laborde, Tamara Sastre-Oliva, Rafael Moreno-Luna, Luis F Lopez-Almodovar, Pedro L Sanchez, Francisco Fernandez-Aviles, Fernando Vivanco, Luis R Padial, Finn Akerstrom, Gloria Alvarez-Llamas, Fernando de la Cuesta, María G Barderas
BACKGROUND: The most common valve diseases are calcific aortic stenosis (AS) and aortic regurgitation (AR). The former is characterized by thickening of valve leaflets followed by progressive calcification, which produces progressive aortic valve (AV) narrowing, increased pressure afterload on the left ventricle (LV) and subsequent LV hypertrophy. On the other hand, AR is due to malcoaptation of the valve leaflets with resultant diastolic reflux of blood from aorta back to the LV producing volume and pressure overload and progressive LV dilatation...
September 26, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27697308/calcific-aortic-stenosis-and-its-correlation-with-a-novel-inflammatory-marker-the-lymphocyte-monocyte-ratio
#17
Tolga Han Efe, Kadriye Gayretli Yayla, Cagri Yayla, Ahmet Goktug Ertem, Tolga Cimen, Hilal Erken Pamukcu, Murat Bilgin, Mehmet Erat, Mehmet Dogan, Ekrem Yeter
INTRODUCTION: Calcific aortic valve disease, a chronic progressive disorder, is the leading cause of valve replacement among elderly patients. The lymphocyte/monocyte ratio has been recently put forward as an inflammatory marker of relevance in several cancers as well as in cardiovascular disease. This study aims to assess the correlation between severity of calcific aortic stenosis and the lymphocyte/monocyte ratio. METHODS: The study retrospectively included 178 patients with a diagnosis of calcific aortic stenosis and 139 age- and gender-matched controls...
September 30, 2016: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/27685946/calcific-aortic-valve-disease-is-associated-with-layer-specific-alterations-in-collagen-architecture
#18
Heather N Hutson, Taylor Marohl, Matthew Anderson, Kevin Eliceiri, Paul Campagnola, Kristyn S Masters
Disorganization of the valve extracellular matrix (ECM) is a hallmark of calcific aortic valve disease (CAVD). However, while microarchitectural features of the ECM can strongly influence the biological and mechanical behavior of tissues, little is known about the ECM microarchitecture in CAVD. In this work, we apply advanced imaging techniques to quantify spatially heterogeneous changes in collagen microarchitecture in CAVD. Human aortic valves were obtained from individuals between 50 and 75 years old with no evidence of valvular disease (healthy) and individuals who underwent valve replacement surgery due to severe stenosis (diseased)...
2016: PloS One
https://www.readbyqxmd.com/read/27677645/a-unique-case-of-double-orifice-aortic-valve-comprehensive-assessment-by-2-3-dimensional-and-color-doppler-echocardiography
#19
James E Stirrup, Peter J Cowburn, Dimitrios Pousios, Sunil K Ohri, Benoy N Shah
Transesophageal echocardiography (TEE) is a powerful imaging tool for the comprehensive assessment of valvular structure and function. TEE may be of added benefit when anatomy is difficult to delineate accurately by transthoracic echocardiography. In this article, we present 2-, 3-dimensional, and color Doppler TEE images from a male patient with aortic stenosis. A highly unusual and complex pattern of valvular calcification created a functionally "double-orifice" valve. Such an abnormality may have implications for the accuracy of continuous-wave Doppler echocardiography, which assumes a single orifice valve in native aortic valves...
September 2016: Echocardiography
https://www.readbyqxmd.com/read/27665230/antisense-oligonucleotides-targeting-apolipoprotein-a-in-people-with-raised-lipoprotein-a-two-randomised-double-blind-placebo-controlled-dose-ranging-trials
#20
Nicholas J Viney, Julian C van Capelleveen, Richard S Geary, Shuting Xia, Joseph A Tami, Rosie Z Yu, Santica M Marcovina, Steven G Hughes, Mark J Graham, Rosanne M Crooke, Stanley T Crooke, Joseph L Witztum, Erik S Stroes, Sotirios Tsimikas
BACKGROUND: Elevated lipoprotein(a) (Lp[a]) is a highly prevalent (around 20% of people) genetic risk factor for cardiovascular disease and calcific aortic valve stenosis, but no approved specific therapy exists to substantially lower Lp(a) concentrations. We aimed to assess the efficacy, safety, and tolerability of two unique antisense oligonucleotides designed to lower Lp(a) concentrations. METHODS: We did two randomised, double-blind, placebo-controlled trials...
November 5, 2016: Lancet
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