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https://www.readbyqxmd.com/read/28538766/heyde-s-syndrome-and-transcatheter-aortic-valve-implantation
#1
Conrado Pedroso Balbo, Luciana Paula Seabra, Victor Gualda Galoro, Guido Caputi, José Honório Palma, Ênio Buffolo
No abstract text is available yet for this article.
April 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28538272/transareolar-video-assisted-approach-to-the-atrial-septal-defect-and-tricuspid-valve
#2
Tadashi Kitamura, Shinzo Torii, Tetsuya Horai, Koichi Sughimoto, Kensuke Kobayashi, Yusuke Irisawa, Hidenori Hayashi, Takuya Matsushiro, Yurie Miyata, Yuta Tsuchida, Kagami Miyaji
Minimally invasive atrial septal defect closure and tricuspid annuloplasty in female patients are normally performed through a right submammary anterior minithoracotomy approach. However, when the aortic root is located higher, the direction of aortic cannulation becomes not ideal through the submammary incision. In such cases, transareolar approach is useful. Through this approach, aortic cannulation and tricuspid operation can be performed with endoscopic assistance, and ASD closure can be performed under direct vision...
May 19, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28538179/hand2-target-gene-regulatory-networks-control-atrioventricular-canal-and-cardiac-valve-development
#3
Frédéric Laurent, Ausra Girdziusaite, Julie Gamart, Iros Barozzi, Marco Osterwalder, Jennifer A Akiyama, Joy Lincoln, Javier Lopez-Rios, Axel Visel, Aimée Zuniga, Rolf Zeller
The HAND2 transcriptional regulator controls cardiac development, and we uncover additional essential functions in the endothelial to mesenchymal transition (EMT) underlying cardiac cushion development in the atrioventricular canal (AVC). In Hand2-deficient mouse embryos, the EMT underlying AVC cardiac cushion formation is disrupted, and we combined ChIP-seq of embryonic hearts with transcriptome analysis of wild-type and mutants AVCs to identify the functionally relevant HAND2 target genes. The HAND2 target gene regulatory network (GRN) includes most genes with known functions in EMT processes and AVC cardiac cushion formation...
May 23, 2017: Cell Reports
https://www.readbyqxmd.com/read/28535202/clinical-implications-of-hypothermic-ventricular-fibrillation-versus-beating-heart-technique-during-cardiopulmonary-bypass-for-pulmonary-valve-replacement-in-patients-with-repaired-tetralogy-of-fallot
#4
Ji-Hyun Lee, Ji-Eun Lee, Jungho Shin, In-Kyung Song, Hee-Soo Kim, Chong-Sung Kim, Woong-Han Kim, Jin-Tae Kim
OBJECTIVES: This study aimed to compare the effects of hypothermic ventricular fibrillation and beating-heart techniques during cardiopulmonary bypass (CPB) on postoperative outcomes after simple pulmonary valve replacement in patients with repaired tetralogy of Fallot (TOF). METHODS: We retrospectively reviewed the data of 47 patients with repaired tetralogy of Fallot at a single institution, who received pulmonary valve replacement under the ventricular fibrillation or beating-heart technique without cardioplegic cardiac arrest during CPB between January 2005 and April 2015...
May 23, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28535198/transcatheter-aortic-valve-implantation-for-recurrent-valsalva-sinus-re-dissection-and-severe-aortic-regurgitation-shortly-after-surgery-for-type-a-aortic-dissection
#5
Elena Caporali, Giovanni Pedrazzini, Stefanos Demertzis, Enrico Ferrari
Delayed aortic regurgitation following Valsalva sinus re-dissection is a well-known complication that can occur at any time after surgery for type-A aortic dissection without root replacement. We describe a case of acute type-A dissection in an 81-year-old lady successfully treated with aortic valve resuspension and ascending aorta replacement with a 28-mm vascular graft. A month later, the patient was readmitted for worsening heart failure and a transthoracic echocardiogram showed severe aortic regurgitation secondary to non-coronary Valsalva sinus re-dissection and non-coronary aortic valve leaflet prolapse also confirmed at computed tomography scan...
May 23, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28535185/fifteen-years-experience-with-the-use-of-artificial-chords-for-valve-reconstruction-in-children%C3%A2
#6
Jolanda Kluin, Vladimir Sojak, David R Koolbergen, Rody Boon, Regina Bökenkamp, Mark G Hazekamp
OBJECTIVES: To retrospectively review our experience with artificial chords in mitral and tricuspid reconstructive surgery in children. METHODS: All consecutive paediatric (<18 years) patients who underwent mitral or tricuspid valve reconstruction with the use of artificial chords in our centre in the past 15 years were retrospectively analysed. RESULTS: Thirty-nine patients (age 3 days to 17 years) underwent reconstruction of the mitral ( n  = 27) or tricuspid ( n  = 12) valve using artificial chords...
May 23, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28534646/pulmonary-rhabdomyosarcoma-associated-with-check-valve-mechanism
#7
Udit Chaddha, Jeffrey A Hagen, Bassam Yaghmour
No abstract text is available yet for this article.
May 23, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28534558/-proposing-a-physiological-model-for-emergency-department-operating-principles-classification-of-overcrowding-and-guidelines-for-redesign
#8
M Herrera Carranza, F Aguado Correa, N Padilla Garrido, F López Camacho
The operation of Emergency Departments (ED) is determined by demand, their own organizational structures and the connection to other medical care levels. When these elements are not simultaneous, it hinders patient flow and decreases capacity, making it necessary to employ a systemic approach to the chain of emergency care as a single operational entity. With this theoretical orientation, we suggest a conceptual model similar to the physiological cardiac output, in which the preload is the demand, the contractile or flow pump is the organizational structure, the afterload is the hospital, the pre-ED valve is primary care and outpatient emergencies, and the post-ED valve is the diagnostic support services and the specialist consultants...
April 30, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28534460/flail-anterior-tricuspid-valve-leaflet-in-a-neonate-association-with-maternal-antiphospholipid-syndrome
#9
Adrian J Tarca, Luke Eckersley, Darshan Kothari
This brief report describes a case of flail anterior tricuspid valve leaflet in a neonate associated with maternal antiphospholipid syndrome. Fetal echocardiography at 27 weeks of gestation showed competent atrioventricular valves with biventricular echogenic chordae. Fetal distress was noted at delivery, and echocardiography showed a flail anterior leaflet of the tricuspid valve with severe regurgitation. Possible causation and implications of maternal antiphospholipid syndrome are discussed.
May 23, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28534400/opto-valleytronic-spin-injection-in-monolayer-mos2-few-layer-graphene-hybrid-spin-valves
#10
Yunqiu Kelly Luo, Jinsong Xu, Tiancong Zhu, Guanzhong Wu, Elizabeth Joan McCormick, Wenbo Zhan, Mahesh R Neupane, Roland K Kawakami
Two dimensional (2D) materials provide a unique platform for spintronics and valleytronics due to the ability to combine vastly different functionalities into one vertically-stacked heterostructure, where the strengths of each of the constituent materials can compensate for the weaknesses of the others. Graphene has been demonstrated to be an exceptional material for spin transport at room temperature, however it lacks a coupling of the spin and optical degrees of freedom. In contrast, spin/valley polarization can be efficiently generated in monolayer transition metal dichalcogenides (TMD) such as MoS2 via absorption of circularly-polarized photons, but lateral spin or valley transport has not been realized at room temperature...
May 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28533839/-epidemiology-of-the-relationship-between-atrial-fibrillation-and-heart-failure
#11
Yassine Ragbaoui, Chafia Chehbouni, Ayoub El Hammiri, Rachida Habbal
Atrial fibrillation and heart failure are diseases which often coexist aggravating prognosis and constituting a major public health problem. The aim of this study was to assess the prevalence of atrial fibrillation in patients with chronic heart failure and to determine the clinical profile of this group of patients. We conducted a retrospective descriptive study based on the registry of heart failure of the Department of Cardiology at the University Hospital Centre from June 2006 to March 2015. All patients over 18 years of age with chronic heart failure associated with atrial fibrillation were included in the study...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28533581/bicuspid-aortic-valve-an-unusual-cause-of-aneurysm-of-left-coronary-sinus-of-valsalva
#12
Euden Bhutia, Dinesh Kumar, Binoy Shankar, Shakti Pad Das, Sunil Kishore
Bicuspid aortic valve is traditionally considered an innocuous congenital anomaly. Due to a better and widespread availability of non-invasive imaging techniques, it has come to the fore that 30% of these cases develop complications, viz., valve abnormality (aortic regurgitation and stenosis), and aneurysm of aortic root and ascending aorta. Sinus of Valsalva aneurysm is an uncommon complication of bicuspid aortic valve and more so those arising from the left coronary sinus are the rarest. These complications generally occur in the third or fourth decade of life...
May 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28533099/surgical-aortic-valve-replacement-following-early-sapien-xt-valve-failure-a-first
#13
Tanveer Ahmad, Prakash Ludhani, Ronen Gurvitch, John Goldblatt, James Tatoulis
BACKGROUND: Early degeneration of prosthetic aortic valve in transcatheter aortic valve replacement (TAVR) is a rare complication. METHOD: We report the case of a 75-year-old woman who presented with severe calcific stenosis of Edwards SAPIEN-XT valve implanted only four years previously. She is a Jehovah's Witness and has background of Sjogren's syndrome with secondary cryoglobulinaemic vasculitis. She was not a suitable candidate for valve-in-valve TAVR in view of early prosthetic valve failure by calcification...
May 9, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28532987/hints-of-lyme-disseminated-borreliosis-involving-the-mitral-and-tricuspid-valves
#14
Ankit Maheshwari, Robert J Bache
No abstract text is available yet for this article.
May 19, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28532979/percutaneous-pulmonary-melody-valve-implantation-through-the-transhepatic-route-in-an-8-year-old-patient
#15
Félix Coserria-Sánchez, Álvaro Iglesias-López, Manuel Villa Gil-Ortega, Antonio Moruno-Tirado, Francisco García-Angleu, José L Zunzunegui-Martínez
No abstract text is available yet for this article.
May 19, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28532900/combinatorial-screening-of-3d-biomaterial-properties-that-promote-myofibrogenesis-for-mesenchymal-stromal-cell-based-heart-valve-tissue-engineering
#16
Jenna Usprech, David A Romero, Cristina H Amon, Craig A Simmons
The physical and chemical properties of a biomaterial integrate with soluble cues in the cell microenvironment to direct cell fate and function. Predictable biomaterial-based control of integrated cell responses has been investigated with two-dimensional (2D) screening platforms, but integrated responses in 3D have largely not been explored systematically. To address this need, we developed a screening platform using polyethylene glycol norbornene (PEG-NB) as a model biomaterial with which the polymer wt% (to control elastic modulus) and adhesion peptide types (RGD, DGEA, YIGSR) and densities could be controlled independently and combinatorially in arrays of 3D hydrogels...
May 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28532778/review-of-major-registries-and-clinical-trials-of-late-outcomes-after-transcatheter-aortic-valve-replacement
#17
REVIEW
Sameer Arora, Cassandra J Ramm, Paula D Strassle, Satyanarayana R Vaidya, Thomas G Caranasos, John P Vavalle
The results of the Placement of AoRtic TraNscathetER Valves (PARTNER) 2 trial established the feasibility of transcatheter aortic valve replacement (TAVR) for intermediate surgical risk patients. The expansion of TAVR into the low-risk patient population will largely depend on its durability outcomes due to the high life expectancy in low-risk patients. Long-term follow-up results from low-risk clinical trials will take several years to be reported. Given this, we performed a systematic review of current long-term data to provide further insights into TAVR durability and long-term patient survival...
April 27, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28532777/predictive-value-of-age-adjusted-charlson-co-morbidity-index-for-1-3-and-5-year-mortality-in-patients-requiring-transcatheter-mitral-valve-repair
#18
Mike Saji, Marc R Katz, Gorav Ailawadi, Dale E Fowler, Michael Ragosta, D Scott Lim
Co-morbidities increase markedly with aging, and they often negatively affect its prognosis. Although mortality with transcatheter mitral valve repair (TMVr) is significantly less than for open mitral valve surgery in patients at high surgical risk, it remains a concern to identify which patients will benefit from this treatment. Some prognostic metrics have been reported to guide better patient selection; however, universal risk stratification measures have not been established. This study aimed to determine if age-adjusted Charlson co-morbidity index (CCI) could predict mortality in patients who underwent TMVr and to assess its discriminatory performance in long-term outcomes...
April 27, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28532769/mitral-valve-repair-for-pure-mitral-regurgitation-followed-years-later-by-mitral-valve-replacement-for-mitral-stenosis
#19
Tiffany M Becker, Paul A Grayburn, William C Roberts
We describe herein 2 patients who developed severe mitral stenosis (MS) approximately two decades after a mitral valve repair operation for pure mitral regurgitation (MR) secondary to mitral valve prolapse. This report's purpose is to point out that use of a circumferential mitral annular ring during the repair has the potential to produce a transmitral pressure gradient just like that occurring after mitral valve replacement utilizing a mechanical prosthesis or a bioprosthesis in the mitral position.
April 12, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28532768/prevalence-and-complications-of-bicuspid-aortic-valve-in-chinese-according-to-echocardiographic-database
#20
Yijian Li, Xin Wei, Zhengang Zhao, Yanbiao Liao, Jialing He, Tianyuan Xiong, Yuanning Xu, Wenyu Lv, Yuanweixiang Ou, Hong Tang, Yuan Feng, Mao Chen
As transcatheter aortic valve replacement has become an alternative treatment for patients at high risk for surgical aortic valve replacement, bicuspid aortic valve (BAV) draws our attention again. The reported frequency of BAV was 0.5% to 2% in western population. However, there was no such epidemiologic study in Chinese population. Our study sought to investigate the prevalence and complications of BAV in China by echocardiographic database. A total of 668 cases who were confirmed with BAV, identified from 195,708 echocardiographic records of 157,039 patients in the echocardiographic database of West China Hospital (between June 2008 and June 2012), were analyzed retrospectively...
April 27, 2017: American Journal of Cardiology
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