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https://www.readbyqxmd.com/read/29036717/evaluation-of-occupational-radiation-dose-in-transcatheter-aortic-valve-implantation
#1
Anette Aarsnes, Gry Dahle, Erik Fosse, Kjell Arne Rein, Lars Aaberge, Anne Catrine T Martinsen
Occupational doses during fluoroscopy in interventional procedures vary largely (Kim et al. (Occupational radiation doses to operators performing cardiac catheterization procedures. Health Phys. 2008;94:211-227)). In transcatheter aortic valve implantation, the operators' positions and use of radiation shielding are particularly related to the entry choice on the patient's heart. This study evaluates how occupational doses depend on operator positioning during transfemoral and transaortal access. Occupational dosimetric readings were collected with electronic dosemeters on two cardiothoracic surgeons and one cardiologist during 31 procedures...
September 23, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29033504/procedural-characteristics-and-outcomes-of-transcatheter-aortic-valve-implantation-a-single-center-experience-of-the-first-100-inoperable-or-high-surgical-risk-patients-with-severe-aortic-stenosis
#2
Ying-Hwa Chen, Hsiao-Huang Chang, Po-Lin Chen, Zen-Chung Weng, I-Ming Chen, Hsin-Bang Leu, Chun-Yang Huang, Su-Man Lin, Mei-Han Wu
BACKGROUND: This is the first study of a Taiwanese population reporting transcatheter aortic valve implantation (TAVI) outcomes of the first 100 cases from a single center offering two different transcatheter heart valve technologies via six types of approaches. We herein report the 30-day and one-year outcomes in our first 100 TAVI patients at Taipei Veterans General Hospital. METHODS: From May 2010 to April 2016, 100 consecutive patients with severe aortic stenosis (AS) who were considered unsuitable or at high risk for surgical aortic valve replacement underwent TAVI...
July 2017: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/29032762/a-review-of-evolutionary-and-cyclical-changes-in-the-surgical-approach-to-aortic-valve-disease
#3
Marco Piciche, Guglielmo Actis Dato, Roberto Lorusso, Francesco Musumeci
INTRODUCTION: Aortic valve surgery is no exception to the general rule that history is a cycle in many fields. This manuscript aims to assist readers in transitioning from past to present and on into the future within the field of aortic valve surgery. METHODS: The existing literature has been examined, including old and modern articles published on pubmed, old articles non visible on pubmed, old and recent books on the history of medicine, looking for similarities and repetitions in techniques and surgical approaches to the aortic valve in the past and the current times...
October 9, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/29031706/early-outcomes-with-rapid-deployment-vs-stented-biological-valves-a-propensity-match-analysis
#4
Anthony Nguyen, Louis-Mathieu Stevens, Denis Bouchard, Philippe Demers, Louis P Perrault, Michel Carrier
Rapid-deployment valves could potentially reduce cross-clamping time and cardiopulmonary bypass time in complex combined procedures and facilitate minimally invasive surgery. This propensity-matched study compared clinical and echographic outcomes between patients undergoing rapid-deployment aortic valve replacement (RDAVR) compared with stented biological aortic valve replacement (SAVR), with or without concomitant procedures. Between 2012 and 2015, 61 consecutive patients (age 70 ± 7 years, European System for Cardiac Operative Risk Evaluation [EuroSCORE] II 2...
September 8, 2017: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29031049/heart-valve-scaffold-fabrication-bioinspired-control-of-macro-scale-morphology-mechanics-and-micro-structure
#5
Antonio D'Amore, Samuel K Luketich, Giuseppe M Raffa, Salim Olia, Giorgio Menallo, Antonino Mazzola, Flavio D'Accardi, Tamir Grunberg, Xinzhu Gu, Michele Pilato, Marina V Kameneva, Vinay Badhwar, William R Wagner
Valvular heart disease is currently treated with mechanical valves, which benefit from longevity, but are burdened by chronic anticoagulation therapy, or with bioprosthetic valves, which have reduced thromboembolic risk, but limited durability. Tissue engineered heart valves have been proposed to resolve these issues by implanting a scaffold that is replaced by endogenous growth, leaving autologous, functional leaflets that would putatively eliminate the need for anticoagulation and avoid calcification. Despite the diversity in fabrication strategies and encouraging results in large animal models, control over engineered valve structure-function remains at best partial...
October 6, 2017: Biomaterials
https://www.readbyqxmd.com/read/29029949/mitral-valve-replacement-using-carpentier-edwards-pericardial-bioprosthesis-in-patients-with-rheumatic-heart-disease-aged-below-40-years-17-year-results
#6
Ujjwal Kumar Chowdhury, Adil Rizvi, Rajeev Narang, Sandeep Seth, Mani Kalaivani, Suruchi Hasija, Lakshmi Kumari
BACKGROUND: This study was designed to evaluate patients aged less than 40 years implanted with tissue heart valves with respect to survival, thromboembolism, structural degeneration and quality of life. METHODS: Between January, 2000 and December, 2016, 132 patients (51 males) with rheumatic heart disease underwent mitral valve replacement using Carpentier-Edwards, perimount, pericardial bioprostheses. The patients' ages ranged between 12 and 39 years (mean±SD 30...
August 1, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29029140/structural-valve-deterioration-in-the-mitroflow-biological-heart-valve-prosthesis
#7
Issa Farah Issa, Steen Hvitfeldt Poulsen, Farhad Waziri, Christian Torp Pedersen, Per Hostrup Nielsen, Lars Riber, Jordi S Dahl, Peter Søgaard, Martin Agge Nørgaard, Jacob Eifer Møller
OBJECTIVES: Concern has been raised regarding the long-term durability of the Mitroflow biological heart valve prosthesis. Our aim was to assess the incidence of structural valve degeneration (SVD) for the Mitroflow bioprosthesis in a nationwide study in Denmark including all patients alive in Denmark who had received a Mitroflow aortic bioprosthesis since 2000. METHODS: Patients alive in Denmark with a Mitroflow bioprosthesis implanted since January 2000 were invited to participate in a nationwide cross-sectional study with a predefined definition of SVD...
September 28, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29027526/-investigation-of-the-structure-of-a-functionally-intact-xenopericardial-bioconduit-after-long-term-implantation
#8
R A Mukhamadiyarov, N V Rutkovskaya, I V Milto, O D Sidopova, Yu А Kudryavtseva, L S Barbarash
AIM: to investigate the cellular composition of a functionally intact xenopericardial valve in a recipient with acquired mitral defect after long-term implantation. MATERIAL AND METHODS: A Uniline bioconduit (BC) ('Neocor', Kemerovo) removed from the heart in the mitral position at 7.2 years after implantation was investigated. Heart valve leaflets were fixed in a buffered 4% paraformaldehyde solution and imbedded in paraffin or epoxy resin. Slices made from the paraffin samples were stained with hematoxylin and eosin or underwent immunohistochemical (IHC) examination for typing endothelial cells, smooth muscle cells, macrophages, fibroblasts, and T and B lymphocytes...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/29020347/transcatheter-aortic-valve-implantation-in-lower-risk-patients-what-is-the-perspective
#9
Giuseppe Tarantini, Luca Nai Fovino, Bernard J Gersh
In the last decade, transcatheter aortic valve implantation (TAVI), a disruptive technology, has revolutionized the therapy of symptomatic severe aortic stenosis, and current guidelines state that the recommendations for TAVI and surgical aortic valve replacement (SAVR) are equivalent in patients at high-risk. Increased operator experience, technical advances in the new generation of transcatheter heart valves (THV) and excellent TAVI results in recently published randomized controlled trials have led to the expansion of TAVI indication as an alternative to SAVR in intermediate-risk subjects, given appropriate patient selection...
August 24, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29017776/early-outcomes-of-percutaneous-pulmonary-valve-implantation-using-the-edwards-sapien-xt-transcatheter-heart-valve-system
#10
Nikolaus A Haas, Ronald Giacomo Carere, Oliver Kretschmar, Eric Horlick, Josep Rodés-Cabau, Daniël de Wolf, Marc Gewillig, Michael Mullen, Anja Lehner, Cornelia Deutsch, Peter Bramlage, Peter Ewert
BACKGROUND: Patients with congenital or acquired heart defects affecting the pulmonary valve and right ventricular outflow tract (RVOT) commonly require multiple surgical interventions, resulting in significant morbidity. A less invasive alternative is percutaneous pulmonary valve implantation (PPVI). Though studies have previously reported the safety and efficacy of the early generation transcatheter heart valves (THVs), data on more recent devices are severely lacking. METHODS AND RESULTS: We performed a multinational, multicentre, retrospective, observational registry analysis of patients who underwent PPVI using the Edwards SAPIEN XT THV...
October 6, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29017461/feasibility-and-safety-of-early-discharge-after-transfemoral-transcatheter-aortic-valve-implantation-rationale-and-design-of-the-fast-tavi-registry
#11
Marco Barbanti, Jan Baan, Mark S Spence, Fortunato Iacovelli, Gian Luca Martinelli, Francesco Saia, Alessandro Santo Bortone, Frank van der Kley, Douglas F Muir, Cameron G Densem, Marije Vis, Martijn S van Mourik, Lenka Seilerova, Claudia M Lüske, Peter Bramlage, Corrado Tamburino
BACKGROUND: There is an increasing trend towards shorter hospital stays after transcatheter aortic valve implantation (TAVI), in particular for patients undergoing the procedure via transfemoral (TF) access. Preliminary data suggest that there exists a population of patients that can be discharged safely very early after TF-TAVI. However, current evidence is limited to few retrospective studies, encompassing relatively small sample sizes. METHODS: The Feasibility And Safety of early discharge after Transfemoral TAVI (FAST-TAVI) registry is a prospective observational registry that will be conducted at 10 sites across Italy, the Netherlands and the UK...
October 10, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29016813/epicardial-left-atrial-appendage-atriclip-occlusion-reduces-the-incidence-of-stroke-in-patients-with-atrial-fibrillation-undergoing-cardiac-surgery
#12
Etem Caliskan, Ayhan Sahin, Murat Yilmaz, Burkhardt Seifert, Ricarda Hinzpeter, Hatem Alkadhi, James L Cox, Tomas Holubec, Diana Reser, Volkmar Falk, Jürg Grünenfelder, Michele Genoni, Francesco Maisano, Sacha P Salzberg, Maximilian Y Emmert
Aims: Left atrial appendage (LAA) occlusion has emerged as an interesting alternative to oral anticoagulation (OAC) for stroke prevention in patients with atrial fibrillation (AF). We report the safety, efficacy, and durability of concomitant device-enabled epicardial LAA occlusion during open-heart surgery. In addition to long-term follow-up, we evaluate the impact on stroke risk in this selected population. Methods and results: A total of 291 AtriClip devices were deployed epicardially in patients (mean CHA2DS2-VASc-Score: 3...
July 18, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28982563/the-international-multicenter-trivalve%C3%A2-registry-which-patients-are-undergoing-transcatheter-tricuspid-repair
#13
Maurizio Taramasso, Rebecca T Hahn, Hannes Alessandrini, Azeem Latib, Adrian Attinger-Toller, Daniel Braun, Eric Brochet, Kim A Connelly, Paolo Denti, Florian Deuschl, Andrea Englmaier, Neil Fam, Christian Frerker, Joerg Hausleiter, Jean-Michel Juliard, Ryan Kaple, Felix Kreidel, Karl Heinz Kuck, Shingo Kuwata, Marco Ancona, Margarita Malasa, Tamim Nazif, Georg Nickenig, Fabian Nietlispach, Alberto Pozzoli, Ulrich Schäfer, Joachim Schofer, Robert Schueler, Gilbert Tang, Alec Vahanian, John G Webb, Ermela Yzeiraj, Francesco Maisano, Martin B Leon
OBJECTIVES: This study sought to develop a large, international registry to evaluate the diffusion of these approaches and investigate patient characteristics and initial clinical results. BACKGROUND: Several transcatheter tricuspid valve therapies are emerging as therapeutic options for patients with severe symptomatic tricuspid regurgitation (TR), generally a high-risk surgical population. METHODS: The TriValve (Transcatheter Tricuspid Valve Therapies) registry included 106 high-risk patients (76 ± 9 years of age; 60...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28982562/prosthetic-mitral-surgical-valve-in-transcatheter-aortic-valve-replacement%C3%A2-recipients-a-multicenter-analysis
#14
Ignacio J Amat-Santos, Carlos Cortés, Luis Nombela Franco, Antonio J Muñoz-García, Jose Suárez De Lezo, Enrique Gutiérrez-Ibañes, Vicenç Serra, Mariano Larman, Raúl Moreno, Jose M De La Torre Hernandez, Rishi Puri, Pilar Jimenez-Quevedo, José M Hernández García, Juan H Alonso-Briales, Bruno García, Dae-Hyun Lee, Paol Rojas, Teresa Sevilla, Renier Goncalves, Silvio Vera, Itziar Gómez, Josep Rodés-Cabau, José A San Román
OBJECTIVES: The aim of this study was to determine the prognosis and specific complications of patients with prosthetic mitral valves (PMVs) undergoing transcatheter aortic valve replacement (TAVR). BACKGROUND: TAVR is performed relatively often in patients with PMVs, but specific risks are not well described. METHODS: A multicenter analysis was conducted, including patients with severe symptomatic aortic stenosis who underwent TAVR at 10 centers...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28982556/early-outcomes-of-percutaneous-transvenous-transseptal-transcatheter-valve-implantation-in-failed-bioprosthetic-mitral-valves-ring-annuloplasty-and%C3%A2-severe-mitral-annular-calcification
#15
Mackram F Eleid, Brian K Whisenant, Allison K Cabalka, Mathew R Williams, Mohammed Nejjari, David Attias, Neil Fam, Nicholas Amoroso, Thomas A Foley, Peter M Pollak, Oluseun O Alli, Sorin V Pislaru, Sameh M Said, Joseph A Dearani, Charanjit S Rihal
OBJECTIVES: The aim of this study was to examine 1-year outcomes of transseptal balloon-expandable transcatheter heart valve implantation in failed mitral bioprosthesis, ring annuloplasty, and mitral annular calcification (MAC). BACKGROUND: Immediate outcomes following transseptal mitral valve implantation in failed bioprostheses are favorable, but data on subsequent outcomes are lacking. METHODS: Percutaneous transseptal implantation of balloon-expandable transcatheter heart valves was performed in 87 patients with degenerated mitral bioprostheses (valve in valve [VIV]) (n = 60), previous ring annuloplasty (valve in ring) (n = 15), and severe MAC (valve in MAC) (n = 12)...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28977505/beating-heart-mitral-valve-repair-with-neochordae-implantation-real-time-monitoring-of-haemodynamic-recovery
#16
Andrea Colli, Eleonora Bizzotto, Demetrio Pittarello, Gino Gerosa
Transapical off-pump mitral valve repair with neochord implantation has been approved for patients presenting with severe mitral regurgitation due to leaflet prolapse or flail. The procedure is performed under real-time 2D and 3D transoesophageal echocardiography for both implantation and neochordae tension adjustment allowing real-time monitoring of haemodynamic recovery.
July 13, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28974668/acute-severe-mitral-stenosis-immediately-after-transcatheter-aortic-valve-implantation
#17
Johann Auer, Michael Grund, Rudolf Puschmann, Robert Berent
An 86-year-old female patient was referred for treatment of symptomatic severe aortic stenosis. The heart team decided to perform transfemoral transcatheter aortic valve implantation. A 25 mm transcatheter aortic valve was implanted, but the valve migrated low into the left ventricular outflow tract. The subsequent removal and replacement procedures are described.
October 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28973520/longitudinal-hemodynamics-of-transcatheter-and-surgical-aortic-valves-in-the-partner-trial
#18
Pamela S Douglas, Martin B Leon, Michael J Mack, Lars G Svensson, John G Webb, Rebecca T Hahn, Philippe Pibarot, Neil J Weissman, D Craig Miller, Samir Kapadia, Howard C Herrmann, Susheel K Kodali, Raj R Makkar, Vinod H Thourani, Stamatios Lerakis, Ashley M Lowry, Jeevanantham Rajeswaran, Matthew T Finn, Maria C Alu, Craig R Smith, Eugene H Blackstone
Importance: Use of transcatheter aortic valve replacement (TAVR) for severe aortic stenosis is growing rapidly. However, to our knowledge, the durability of these prostheses is incompletely defined. Objective: To determine the midterm hemodynamic performance of balloon-expandable transcatheter heart valves. Design, Setting, and Participants: In this study, we analyzed core laboratory-generated data from echocardiograms of all patients enrolled in the Placement of Aortic Transcatheter Valves (PARTNER) 1 Trial with successful TAVR or surgical AVR (SAVR) obtained preimplantation and at 7 days, 1 and 6 months, and 1, 2, 3, 4, and 5 years postimplantation...
September 27, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28971093/antimicrobial-peptides-in-biomedical-device-manufacturing
#19
REVIEW
Martijn Riool, Anna de Breij, Jan W Drijfhout, Peter H Nibbering, Sebastian A J Zaat
Over the past decades the use of medical devices, such as catheters, artificial heart valves, prosthetic joints, and other implants, has grown significantly. Despite continuous improvements in device design, surgical procedures, and wound care, biomaterial-associated infections (BAI) are still a major problem in modern medicine. Conventional antibiotic treatment often fails due to the low levels of antibiotic at the site of infection. The presence of biofilms on the biomaterial and/or the multidrug-resistant phenotype of the bacteria further impair the efficacy of antibiotic treatment...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28966286/transcatheter-aortic-valve-implantation-improves-cardiac-sympathetic-nerve-activity-on-123-i-metaiodobenzylguanidine-myocardial-scintigraphy-in-severe-aortic-valve-stenosis
#20
Mitsuo Sobajima, Hiroshi Ueno, Hiroshi Onoda, Hiroyuki Kuwahara, Shuhei Tanaka, Ryuichi Ushijima, Nobuyuki Fukuda, Shigeki Yokoyama, Saori Nagura, Toshio Doi, Akio Yamashita, Kazuaki Fukahara, Hisakatsu Ito, Koichiro Kinugawa
BACKGROUND: There is a consensus that overactivation of the cardiac sympathetic nervous system (CSN) proportionately increases the severity of heart failure and is accompanied by worse prognosis. Because it is unknown whether patients with aortic valve stenosis (AS) have similar CSN activation, we investigated the effect of transcatheter aortic valve implantation (TAVI).Methods and Results:We enrolled 31 consecutive patients with AS treated by TAVI. (123)I-metaiodobenzylguanidine (MIBG) myocardial scintigraphy was performed at baseline and at 2 weeks after TAVI...
September 29, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
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