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https://www.readbyqxmd.com/read/29344797/annular-dynamics-of-memo3d-annuloplasty-ring-evaluated-by-3d-transesophageal-echocardiography
#1
Hiroyuki Nishi, Koichi Toda, Shigeru Miyagawa, Yasushi Yoshikawa, Satsuki Fukushima, Daisuke Yoshioka, Yoshiki Sawa
BACKGROUND: We assessed the mitral annular motion after mitral valve repair with the Sorin Memo 3D® (Sorin Group Italia S.r.L., Saluggia, Italy), which is a unique complete semirigid annuloplasty ring intended to restore the systolic profile of the mitral annulus while adapting to the physiologic dynamism of the annulus, using transesophageal real-time three-dimensional echocardiography. METHODS: 17 patients (12 male; mean age 60.4 ± 14.9 years) who underwent mitral annuloplasty using the Memo 3D ring were investigated...
January 17, 2018: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29274010/the-challenge-of-hammock-mitral-valve-during-infancy-precise-preoperative-advanced-imaging-and-three-dimensional-modeling-augments-customized-operative-valve-reconstruction
#2
Dennis VanLoozen, Shawna McCafferty, William A Lutin, Anastasios C Polimenakos
Hammock mitral valve (MV), also known as anomalous mitral arcade, is a rare congenital anomaly. We report a case of a 10-month-old child who presented with congestive heart failure and was found to have severe mitral stenosis (MS) secondary to a hammock MV anomaly. Detailed advanced imaging with cardiac MRI and three-dimensional (3D) echocardiography favorably navigated a customized valve-sparing surgical reconstruction of the congenitally abnormal MV. Repair of a hammock MV is technically difficult with a guarded prognosis...
December 22, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29248168/low-dose-hypersensitive-response-for-residual-patm-and-%C3%AE-h2ax-foci-in-normal-fibroblasts-of-cancer-patients
#3
Dorota Słonina, Aleksandra Kowalczyk, Anna Janecka-Widła, Damian Kabat, Wiktor Szatkowski, Beata Biesaga
PURPOSE: To define the dose-response relationship for initial and residual pATM and γH2AX foci and temporal response of pATM foci in fibroblasts of 4 hyper-radiosensitivity (HRS)-positive cancer patients and 8 HRS-negative cancer patients and answer the question regarding the role of DNA double-strand break (DSB) recognition and repair in the mechanism of HRS. METHODS AND MATERIALS: The cells were irradiated with single doses (0.1-4 Gy) of 6-MV X rays. The number of initial and residual pATM and γH2AX foci was assessed 1 hour and 24 hours after irradiation, respectively...
November 6, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29228212/impact-of-body-mass-index-on-outcomes-following-mitral-surgery-does-an-obesity-paradox-exist
#4
Filippo Rapetto, Vito D Bruno, Matthew King, Umberto Benedetto, Massimo Caputo, Gianni D Angelini, Raimondo Ascione, Franco Ciulli, Hunaid A Vohra
OBJECTIVES: This study was conducted to clarify the relationship between body mass index and mitral valve (MV) surgery and to determine whether an 'obesity paradox' exists in the context of surgery for degenerative MV disease. METHODS: In this retrospective single-centre study, we analysed data from 715 patients who underwent mitral surgery for degenerative disease from 2000 to 2015. Patients were classified according to body mass index: underweight (<20 kg/m 2 ), normal weight (20-24...
December 8, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29221175/trpm8-is-required-for-survival-and-radioresistance-of-glioblastoma-cells
#5
Dominik Klumpp, Stephanie C Frank, Lukas Klumpp, Efe C Sezgin, Marita Eckert, Lena Edalat, Martin Bastmeyer, Daniel Zips, Peter Ruth, Stephan M Huber
TRPM8 is a Ca2+-permeable nonselective cation channel belonging to the melastatin sub-group of the transient receptor potential (TRP) family. TRPM8 is aberrantly overexpressed in a variety of tumor entities including glioblastoma multiforme where it reportedly contributes to tumor invasion. The present study aimed to disclose further functions of TRPM8 in glioma biology in particular upon cell injury by ionizing radiation. To this end, TCGA data base was queried to expose the TRPM8 mRNA abundance in human glioblastoma specimens and immunoblotting was performed to analyze the TRPM8 protein abundance in primary cultures of human glioblastoma...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29206746/mitral-valve-and-subvalvular-repair-for-secondary-mitral-regurgitation-rationale-and-clinical-outcomes-of-the-papillary-muscle-sling
#6
Christos G Mihos, Romain Capoulade, Evin Yucel, Steve Xydas, Francesco Nappi, Roy F Williams, Orlando Santana
Secondary mitral regurgitation (MR) is a common finding in patients with dilated cardiomyopathy, and it is associated with poor outcomes. It is the result of incomplete systolic closure of the mitral valve (MV) as a consequence of left ventricular dilatation, papillary muscle displacement with impaired systolic shortening, and mitral leaflet tethering. MV surgery may be performed in cases of significant secondary MR despite guideline-directed medical therapy. However, MV repair, which is most commonly performed with an undersized ring annuloplasty, is associated with a 30-60% recurrence of moderate or greater MR at mid-term follow-up...
January 2018: Cardiology in Review
https://www.readbyqxmd.com/read/29196230/functional-anatomy-and-pathophysiologic-principles-in-mitral-regurgitation-non-invasive-assessment
#7
REVIEW
Sylvestre Maréchaux, Jeffery E Illman, James Huynh, Hector I Michelena, Vuyisile T Nkomo, Christophe Tribouilloy
Mitral regurgitation (MR) is the most prevalent cause of valvular heart disease (VHD) in western countries. In the Euro Heart Survey on VHD, MR was the second most common heart VHD requiring surgery. It is also the most common form of VHD in community and population-based studies from the United States. The categorization of MR based on causes and mechanisms is a major determinant of clinical outcome, of possible therapies for the MR and of the effectiveness of these therapies. Surgical mitral valve (MV) repair has been shown to improve survival in patients with severe primary MR compared with MV replacement...
November 28, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29182759/long-term-outcome-after-anomalous-left-coronary-artery-from-the-pulmonary-artery-repair-a-40-year-single-centre-experience
#8
Rüdiger Lange, Julie Cleuziou, Markus Krane, Peter Ewert, Jelena Pabst von Ohain, Elisabeth Beran, Keti Vitanova
OBJECTIVES: An anomalous left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital anomaly, often associated with severely impaired left ventricular (LV) contractility and functional mitral valve (MV) regurgitation. Current data suggest that earlier correction of ALCAPA may result in a more complete recovery of LV function. By analysing the results of a large single-centre ALCAPA cohort, we sought to investigate whether these treatment paradigms remain valid. METHODS: A retrospective study was performed evaluating all patients undergoing repair of ALCAPA over a period of almost 40 years...
November 22, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29182736/does-septal-thickness-influence-outcome-of-myectomy-for-hypertrophic-obstructive-cardiomyopathy
#9
Anita Nguyen, Hartzell V Schaff, Rick A Nishimura, Joseph A Dearani, Jeffrey B Geske, Brian D Lahr, Steve R Ommen
OBJECTIVES: Patients with hypertrophic obstructive cardiomyopathy and basal septal thickness <18 mm are often considered unsuitable candidates for myectomy. Mitral valve (MV) replacement is frequently performed instead. We aimed to determine whether septal thickness affects outcomes and adequacy of myectomy. METHODS: Clinical and echocardiographic data were reviewed for 1486 consecutive adult patients with hypertrophic obstructive cardiomyopathy who underwent transaortic septal myectomy from January 2005 through December 2014...
November 22, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29181740/impact-of-mitral-valve-intervention-with-left-ventricular-assist-device-implantation-on-postoperative-outcomes-and-morphologic-change
#10
Hiroki Hata, Tomoyuki Fujita, Hatsue Ishibashi-Ueda, Kensuke Kuroda, Osamu Seguchi, Yorihiko Matsumoto, Masanobu Yanase, Takuma Sato, Seiko Nakajima, Norihide Fukushima, Junjiro Kobayashi
Although mitral regurgitation (MR) is prevalent in patients with end-stage heart failure, the impact of mitral valve (MV) surgery on outcomes after left ventricular assist device (LVAD) implantation and morphologic changes of MV remains unclear. We retrospectively reviewed 74 patients who underwent LVAD implantation as a bridge to transplant. Of these, 11 (15%) underwent MV repair concomitant with or prior to LVAD implantation, while 27 patients with preoperative significant (moderate or greater) MR did not undergo concomitant MV surgery...
November 27, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29168622/mitral-valve-pressure-gradient-after-percutaneous-mitral-valve-repair-every-beat-counts
#11
Daniel Lavall, Bruno Scheller, Christian Werner, Axel Buob, Felix Mahfoud
A patient presented with symptoms of decompensated heart failure 2 months after percutaneous mitral valve (MV) repair. Echocardiography demonstrated impaired left ventricular function with elevated MV pressure gradients and pulmonary pressures during rapid atrial fibrillation. Heart rate control was achieved by implantation of a biventricular pacemaker with subsequent His-bundle ablation because atrial fibrillation was refractory to medical treatment. During biventricular pacing at different rates (50-110 b...
November 23, 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29161956/percutaneous-repair-of-mitral-valve-regurgitation-in-patients-with-severe-heart-failure-comparison-with-optimal-medical-treatment
#12
Nicolas Geis, Philip Raake, Markus Lewening, Derliz Mereles, Emmanuel Chorianopoulos, Lutz Frankenstein, Hugo A Katus, Raffi Bekeredjian, Sven T Pleger
BACKGROUND: Occurrence of severe mitral valve (MV) regurgitation (MR) is an independent negative predictor of mortality in patients with severe systolic heart failure (HF). This study examines clinical effects and cardiac reverse remodelling in patients with severe systolic HF receiving percutaneous mitral valve repair (PMVR) using MitraClip in comparison to patients receiving optimal medical therapy only. METHODS: Between 2010 and 2014, 86 patients (Society of Thoracic Surgeons score: 10...
November 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/29150326/concomitant-mitral-valve-procedures-in-patients-undergoing-implantation-of-continuous-flow-left-ventricular-assist-devices-an-intermacs-database-analysis
#13
Jason O Robertson, David C Naftel, Susan L Myers, Ryan J Tedford, Susan M Joseph, James K Kirklin, Scott C Silvestry
BACKGROUND: Management of existing mitral valve (MV) disease in patients undergoing left ventricular assist device (LVAD) implantation remains controversial. METHODS: Among continuous-flow LVAD patients with moderate to severe mitral regurgitation entered into the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) database between April 2008 and March 2014 (n = 4,930), outcomes were compared between patients who underwent MV repair (MVr, n = 252), MV replacement (MVR, n = 11) and no MV procedure (no MVP, n = 4,667)...
October 10, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/29148156/long-term-outcomes-for-different-surgical-strategies-to-treat-left-ventricular-outflow-tract-obstruction-in-hypertrophic-cardiomyopathy
#14
Richard Collis, Oliver Watkinson, Constantinos O'Mahony, Oliver P Guttmann, Antonis Pantazis, Maria Tome-Esteban, Victor Tsang, Venkatachalam Chandrasekaran, Christopher G A McGregor, Perry M Elliott
AIMS: Surgical intervention is used to treat dynamic left ventricular outflow tract obstruction (LVOTO) in hypertrophic cardiomyopathy. This study assesses the effect of different surgical strategies on long-term mortality and morbidity. METHODS AND RESULTS: In total, 347 patients underwent surgical intervention for LVOTO (1988-2015). Group A (n = 272) underwent septal myectomy; Group B (n = 33), septal myectomy and mitral valve (MV) repair; Group C (n = 22), myectomy and MV replacement; and Group D (n = 20), MV replacement alone...
November 16, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/29146626/clinical-outcomes-in-1731-patients-undergoing-mitral-valve-surgery-for-rheumatic-valve-disease
#15
Wan Kee Kim, Ho Jin Kim, Joon Bum Kim, Sung-Ho Jung, Suk Jung Choo, Cheol Hyun Chung, Jae Won Lee
OBJECTIVE: Unlike degenerative mitral valve (MV) disease, the advantages of valve repair procedure over replacement have been debated in rheumatic MV disease. This study aims to evaluate the impact of procedural types on long-term outcomes through analyses on a large data set from an endemic area of rheumatic disease. METHODS: We evaluated 1731 consecutive patients (52.3±12.5 years; 1190 women) undergoing MV surgery for rheumatic MV disease between 1997 and 2015...
November 16, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29128572/mitral-valve-repair-robotic-and-other-minimally-invasive-approaches
#16
REVIEW
Mateo Marin Cuartas, Hoda Javadikasgari, Bettina Pfannmueller, Joerg Seeburger, A Marc Gillinov, Rakesh M Suri, Michael A Borger
Robotic and minimally invasive mitral valve (MV) procedures have been performed with increasing frequency over time. These alternatives offer similar efficacy to that achieved via standard median sternotomy, particularly in large volume centers, along with low perioperative morbidity and mortality rates. Moreover, patient acceptance is oftentimes increased due to less postoperative pain and shorter recovery times, as well as superior cosmetic results. However, these techniques are technically complex and associated with a significant learning curve...
November 9, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29117502/mitral-valve-repair-in-degenerative-mitral-regurgitation-state-of-the-art
#17
REVIEW
Michele De Bonis, Ottavio Alfieri, Malcolm Dalrymple-Hay, Benedetto Del Forno, Filip Dulguerov, Gilles Dreyfus
In industrialized countries, the most common etiology of mitral regurgitation (MR) is degenerative mitral valve (MV) disease. The natural history of severe degenerative MR is poor. However, its appropriate and timely correction is associated with a life expectancy similar to that of the normal population. Surgical MV repair is the gold standard treatment. This review will focus on the most recent evidence with a specific emphasis on surgical indications, timing of treatment, contemporary surgical techniques, Heart Teams and Centers of Excellence...
November 5, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29117319/role-of-hospital-volumes-in-identifying-low-performing-and-high-performing-aortic-and-mitral-valve-surgical-centers-in-the-united-states
#18
Rohan Khera, Ambarish Pandey, Thomas Koshy, Colby Ayers, Brahmajee K Nallamothu, Sandeep R Das, Mark H Drazner, Michael E Jessen, Ajay J Kirtane, Timothy J Gardner, James A de Lemos, Deepak L Bhatt, Dharam J Kumbhani
Importance: Identifying high-performing surgical valve centers with the best surgical outcomes is challenging. Hospital surgical volume is a frequently used surrogate for outcomes. However, its ability to distinguish low-performing and high-performing hospitals remains unknown. Objective: To examine the association of hospital procedure volume with hospital performance for aortic and mitral valve (MV) surgical procedures. Design, Setting, and Participants: Within an all-payer nationally representative data set of inpatient hospitalizations, this study identified 682 unique hospitals performing surgical aortic valve replacement (SAVR) and MV replacement and repair with or without coronary artery bypass grafting (CABG) between 2007 and 2011...
November 8, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29106557/surgical-results-of-mitral-valve-repair-for-congenital-mitral-valve-stenosis-in-paediatric-patients
#19
Sungkyu Cho, Woong-Han Kim, Jae Gun Kwak, Jeong Ryul Lee, Yong Jin Kim
OBJECTIVES: Mitral valve (MV) repairs have been performed in paediatric patients with congenital MV stenosis. However, congenital MV stenosis lesions are a heterogeneous group of lesions, and their repair remains challenging. METHODS: From March 1999 to September 2014, MV repair was performed in 22 patients with congenital MV stenosis. The median age was 10.3 months (ranging from 22 days to 9.1 years), and the mean body weight was 7.9 ± 4.0 kg at the time of the operation...
July 4, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29092748/development-of-mitral-stenosis-after-mitral-valve-repair-importance-of-mitral-valve-area
#20
Kwan Leung Chan, Shin-Yee Chen, Thierry Mesana, Buu Khanh Lam
BACKGROUND: The development of mitral stenosis (MS) is not uncommon after mitral valve (MV) repair for degenerative mitral regurgitation (MR), but the significance of MS in this setting has not been defined. METHODS: We prospectively studied 110 such patients who underwent supine bicycle exercise testing to assess intracardiac hemodynamics at rest and at peak exercise. B-type natriuretic peptide (BNP) levels were measured at rest and after the exercise test. The patients also performed the 6-minute walk test and completed the 36-Item Short Form Survey (SF-36)...
September 11, 2017: Canadian Journal of Cardiology
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