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aortic mitral valves

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https://www.readbyqxmd.com/read/28803350/comparison-of-mitral-competence-after-mitral-repair-with-papillary-muscle-approximation-versus-papillary-muscle-relocation-for-functional-mitral-regurgitation
#1
Koji Furukawa, Mitsuhiro Yano, Eisaku Nakamura, Masakazu Matsuyama, Masanori Nishimura, Katsuya Kawagoe, Kunihide Nakamura
The purpose of this study was to evaluate the surgical results of papillary muscle approximation (PMA) and papillary muscle relocation (PMR) for functional mitral regurgitation (FMR) and to compare the effects of both procedures on the change in mitral regurgitation (MR) and echocardiogram parameters associated with tethering. Eighteen patients with moderate-to-severe FMR (MR grade ≥2) who underwent PMA or PMR were retrospectively analyzed. Underlying diseases were ischemic cardiomyopathy, idiopathic dilated cardiomyopathy, and aortic valve disease for seven, six, and five patients, respectively...
August 12, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28803216/3d-2d-registration-with-superabundant-vessel-reconstruction-for-cardiac-resynchronization-therapy
#2
Daniel Toth, Maria Panayiotou, Alexander Brost, Jonathan M Behar, Christopher A Rinaldi, Kawal S Rhode, Peter Mountney
A key component of image guided interventions is the registration of preoperative and intraoperative images. Classical registration approaches rely on cross-modality information; however, in modalities such as MRI and X-ray there may not be sufficient cross-modality information. This paper proposes a fundamentally different registration approach which uses adjacent anatomical structures with superabundant vessel reconstruction and dynamic outlier rejection. In the targeted clinical scenario of cardiac resynchronization therapy (CRT) delivery, preoperative, non contrast-enhanced, MRI is registered to intraoperative, contrasted X-ray fluoroscopy...
August 5, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28801688/-tricuspid-valve-regurgitation-indications-and-operative-techniques
#3
R Lange, N Piazza, T Günther
Functional tricuspid valve (TV) regurgitation secondary to left heart disease (e.g. mitral insufficiency and stenosis) is observed in 75% of the patients with TV regurgitation and is thus the most common etiology; therefore, the majority of patients who require TV surgery, undergo concomitant mitral and/or aortic valve surgery. Uncorrected moderate and severe TV regurgitation may persist or even worsen after mitral valve surgery, leading to progressive heart failure and death. Patients with moderate to severe TV regurgitation show a 3-year survival rate of 40%...
August 11, 2017: Herz
https://www.readbyqxmd.com/read/28800987/dynamic-three-dimensional-geometry-of-the-aortic-valve-apparatus-a-feasibility-study
#4
Arash Khamooshian, Yannis Amador, Ting Hai, Jelliffe Jeganathan, Maria Saraf, Eitezaz Mahmood, Robina Matyal, Kamal R Khabbaz, Massimo Mariani, Feroze Mahmood
OBJECTIVE: To provide (1) an overview of the aortic valve (AV) apparatus anatomy and nomenclature, and (2) data regarding the normal AV apparatus geometry and dynamism during the cardiac cycle obtained from three-dimensional transesophageal echocardiography (3D TEE). DESIGN: Retrospective feasibility study. SETTING: A single-center university teaching hospital. PARTICIPANTS: The study was performed on data of 10 patients with a nonregurgitant, nonstenotic aortic valve undergoing cardiac surgery...
August 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28793912/re-evaluation-of-hypoplastic-left-heart-syndrome-from-a-developmental-and-morphological-perspective
#5
A Crucean, A Alqahtani, D J Barron, W J Brawn, R V Richardson, J O'Sullivan, R H Anderson, D J Henderson, B Chaudhry
BACKGROUND: Hypoplastic left heart syndrome (HLHS) covers a spectrum of rare congenital anomalies characterised by a non-apex forming left ventricle and stenosis/atresia of the mitral and aortic valves. Despite many studies, the causes of HLHS remain unclear and there are conflicting views regarding the role of flow, valvar or myocardial abnormalities in its pathogenesis, all of which were proposed prior to the description of the second heart field. Our aim was to re-evaluate the patterns of malformation in HLHS in relation to recognised cardiac progenitor populations, with a view to providing aetiologically useful sub-groupings for genomic studies...
August 10, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28792140/effect-of-patient-prosthesis-mismatch-in-aortic-position-on-late-onset-tricuspid-regurgitation-and-clinical-outcomes-after-double-valve-replacement
#6
Seung Hyun Lee, Young Nam Youn, Byung Chul Chang, Hyun Chel Joo, Sak Lee, Kyung Jong Yoo
PURPOSE: Significant late-onset tricuspid regurgitation (TR) is unfortunately common after double valve replacement (DVR); however, its underlying factors remain undefined. We evaluated the effect of aortic patient-prosthesis mismatch (PPM) on late-onset TR and clinical outcomes after DVR. MATERIALS AND METHODS: Of the 2392 consecutive patients who underwent aortic valve replacement between January 1990 and May 2014 at our institution, we retrospectively studied 462 patients who underwent DVR (excluding concomitant tricuspid valvular annuloplasty or replacement)...
September 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28790250/-usefulness-of-balloon-aortic-valvuloplasty-for-determining-the-operative-procedure-in-a-patient-with-severe-aortic-stenosis-complicated-with-secondary-mitral-regurgitation-report-of-a-case
#7
Kenichi Kamiya, Akira Furuta, Ryoi Okano, Haruki Tanaka, Masaomi Fukusumi, Tadamasa Miyauchi, Takeo Tedoriya
A 59-year-old man on chronic hemodialysis presented with severe aortic stenosis(AS) and moderate mitral regurgitation (MR). Although aortic valve replacement was scheduled, his status deteriorated into New York Heart Association(NYHA) class III heart failure due to the exacerbation of AS and concomitant MR. Double valve replacement was considered to be too high risk for the patient, and balloon aortic valvuloplasty(BAV) was initially performed. As a result, the mean pressure gradient of the aortic valve decreased from 65 to 28 mmHg and the mean pulmonary pressure also from 52 to 33 mmHg...
August 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28790238/-early-postoperative-hemodynamics-of-mitral-valvuloplasty-using-colvin-galloway-future-band
#8
Ryosuke Funahashi, Yukikatsu Okada, Takashi Muro, Hitoshi Inanami, Tomoyuki Takemoto
The Colvin-Galloway( CG) Future annuloplasty band is a new semirigid partial band, which was introduced in 2012 in Japan. A total of 60 consecutive patients who underwent mitral valve repair with the CG Future Band were assessed by echocardiography in terms of residual mitral regurgitation and diastolic mitral function postoperatively. Intraoperative 3-dimensional echocardiography beautifully demonstrated the physiological change of the aortic curtain during the cardiac cycle. 30 mm was used in 18 patients, 32 mm in 17, 28 mm in 15, 34 mm in 5, 36 mm in 2, and 26 mm in 2...
August 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28789610/management-of-refractory-bleeding-post-cardiopulmonary-bypass-in-an-acute-heparin-induced-thrombocytopenia-type-ii-renal-failure-patient-who-underwent-urgent-cardiac-surgery-with-bivalirudin-angiox-%C3%A2-anticoagulation
#9
Kimberly Hassen, Maria R Maccaroni, Haytham Sabry, Smitangshu Mukherjee, Shankari Serumadar, Inderpaul Birdi
Acute heparin-induced thrombocytopenia (HIT) patients present myriad anticoagulation management challenges in clinical settings where unfractionated heparin (UFH) is the traditional drug of choice. UFH use in cardiac surgery is a known entity that has been subject to rigorous research. Research has, thus, led to its unparalleled use and the development of well-established protocols for cardiac surgery. In comparison to UFH, bivalirudin use for acute HIT patients requiring urgent cardiac surgery with cardiopulmonary bypass (CPB) is still in its infancy...
August 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28780576/mechanical-and-surgical-bioprosthetic-valve-thrombosis
#10
REVIEW
Wei Yao Lim, Guy Lloyd, Sanjeev Bhattacharyya
Valve thrombosis can occur in mechanical prosthetic valves and is increasingly recognised in transcatheter and surgically implanted bioprosthetic valves. The risk of thrombosis of mechanical valves is higher in the mitral position compared with aortic position and in older generation valves (ball and cage valves). There is a wide spectrum of presentation from the asymptomatic patient to those with embolic complications or cardiogenic shock. A combination of transthoracic and transesophageal echocardiography is required to assess the haemodynamic effect of thrombosis (valve gradients and area), leaflet motion and thrombus size...
August 5, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28780032/percutaneous-management-of-mitral%C3%A2-perforation-during-transcatheter-aortic-valve-replacement
#11
Asma Bourezg, Cyril Prieur, Gérard Finet, Gilles Rioufol
No abstract text is available yet for this article.
July 27, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28770396/mitro-aortic-pathology-a%C3%A2-point-of-view-for-a%C3%A2-fully-transcatheter-staged-approach
#12
REVIEW
G D'Ancona, L Paranskaya, A Öner, S Kische, H Ince
Severe aortic valve stenosis (AVS) and mitral valve regurgitation (MVR) often coexist. Although a fully percutaneous treatment for the two conditions, by means of transcatheter aortic valve implantation (TAVI) followed by MitraClip, can be appealing in selected high-risk candidates, critical and strategical reasoning should be applied. In a 3-year period we have developed a single-centre experience of 14 patients who were managed with a staged percutaneous approach to treat severe AVS and MVR. The average interval from TAVI to MitraClip repair was 101 ± 12 days...
August 2, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28764216/association-between-left-ventricle-diastolic-dysfunction-and-unfavorable-prognostic-markers-in-patients-with-aortic-insufficiency
#13
Meliza Goi Roscani, Juliana da Cunha Duarte, Gustavo Nicolodi Augusto, Thaysa Rodrigues de Moraes Salgueiro, Mariana N Meireles, Juliana I F Gobbi, Katashi Okoshi, João Carlos Hueb
INTRODUCTION: The presence of symptoms, systolic dysfunction and Left Ventricle (LV) dilation are considered unfavourable prognostic markers in Aortic Valve Insufficiency (AVI). The role of diastolic dysfunction, which is considered unfavourable outcome marker in cardiac pathologies, is not well established in AVI. AIM: To evaluate if the presence of diastolic dysfunction may be associated with unfavourable prognostic markers in AVI patients. MATERIALS AND METHODS: A cross-sectional prospective study was performed on 22 patients with moderate or severe AVI...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28761772/a-rare-case-of-aortoatrial-fistula-from-streptococcal-endocarditis
#14
Hammad Arshad, Meilin Young, Parth Rali
We represent an unfortunate case of postinfluenza streptococcal endocarditis in a 34-year-old healthy male. He presented with hypoxic respiratory failure and was found to have mitral and aortic valve vegetation. Hospital course was complicated by the presence of an aortoatrial fistula from an aortic root abscess, persistent septic shock, and multiorgan failure.
2017: Case Reports in Pulmonology
https://www.readbyqxmd.com/read/28761763/premature-valvular-heart-disease-in-homozygous-familial-hypercholesterolemia
#15
Akl C Fahed, Kamel Shibbani, Rabih R Andary, Mariam T Arabi, Robert H Habib, Denis D Nguyen, Fady F Haddad, Elie Moubarak, Georges Nemer, Sami T Azar, Fadi F Bitar
Valvular heart disease frequently occurs as a consequence of premature atherosclerosis in individuals with familial hypercholesterolemia (FH). Studies have primarily focused on aortic valve calcification in heterozygous FH, but there is paucity of data on the incidence of valvular disease in homozygous FH. We performed echocardiographic studies in 33 relatively young patients (mean age: 26 years) with homozygous FH (mean LDL of 447 mg/dL, 73% on LDL apheresis) to look for subclinical valvulopathy. Twenty-one patients had evidence of valvulopathy of the aortic or mitral valves, while seven subjects showed notable mitral regurgitation...
2017: Cholesterol
https://www.readbyqxmd.com/read/28760473/transapical-mitral-valve-implantation-for-native-mitral-valve-stenosis-using-a-balloon-expandable-prosthesis
#16
Philipp Kiefer, Thilo Noack, Joerg Seeburger, Alexandro Hoyer, Axel Linke, Norman Mangner, Lukas Lehmkuhl, Friedrich Wilhelm Mohr, David Holzhey
BACKGROUND: Transcatheter mitral valve implantation (TMVI) is still in its infancy and is mainly limited to valve-in-valve or valve-in-ring implantations. We present the early experience with TMVI for severe calcified native MV stenosis. METHODS: Between January 2014 and June 2015, 6 of 11 patients screened (mean age, 77.4 ± 6.3 years; 66% men) with severe native mitral valve (MV) stenosis (mean gradient [Pmean], 11.1 ± 2.1 mm Hg; mean effective orifice area [EOA], 0...
July 28, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28760467/resident-autonomy-in-the-operating-room-expectations-versus-reality
#17
Shari L Meyerson, Joel M Sternbach, Joseph B Zwischenberger, Edward M Bender
BACKGROUND: There is concern about graduating thoracic trainees' independent operative skills due to limited autonomy in training. This study compared faculty and trainee expected levels of autonomy with intraoperative measurements of autonomy for common cardiothoracic operations. METHODS: Participants underwent frame-of-reference training on the 4-point Zwisch scale of operative autonomy (show and tell → active help → passive help → supervision only) and evaluated autonomy in actual cases using the Zwisch Me!! mobile application...
July 28, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28751011/a-coupled-mitral-valve-left-ventricle-model-with-fluid-structure-interaction
#18
Hao Gao, Liuyang Feng, Nan Qi, Colin Berry, Boyce E Griffith, Xiaoyu Luo
Understanding the interaction between the valves and walls of the heart is important in assessing and subsequently treating heart dysfunction. This study presents an integrated model of the mitral valve (MV) coupled to the left ventricle (LV), with the geometry derived from in vivo clinical magnetic resonance images. Numerical simulations using this coupled MV-LV model are developed using an immersed boundary/finite element method. The model incorporates detailed valvular features, left ventricular contraction, nonlinear soft tissue mechanics, and fluid-mediated interactions between the MV and LV wall...
July 24, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28750632/impact-of-bileaflet-mitral-valve-prolapse-on-quantification-of-mitral-regurgitation-with-cardiac-magnetic-resonance-a-single-center-study
#19
Gabriella Vincenti, Pier Giorgio Masci, Tobias Rutz, Jonathan De Blois, Milan Prša, Xavier Jeanrenaud, Juerg Schwitter, Pierre Monney
BACKGROUND: To quantify mitral regurgitation (MR) with CMR, the regurgitant volume can be calculated as the difference between the left ventricular (LV) stroke volume (SV) measured with the Simpson's method and the reference SV, i.e. the right ventricular SV (RVSV) in patients without tricuspid regurgitation. However, for patients with prominent mitral valve prolapse (MVP), the Simpson's method may underestimate the LV end-systolic volume (LVESV) as it only considers the volume located between the apex and the mitral annulus, and neglects the ventricular volume that is displaced into the left atrium but contained within the prolapsed mitral leaflets at end systole...
July 27, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28748891/study-of-chronic-kidney-disease-mineral-bone-disorders-in-newly-detected-advanced-renal-failure-patients-a-hospital-based-cross-sectional-study
#20
Praveen Kumar Etta, R K Sharma, Amit Gupta
We aim to evaluate the disturbances in mineral metabolism, abnormalities in bone mineral density (BMD), and extraskeletal calcification in newly detected, untreated predialysis stage 4 and 5 chronic kidney disease (CKD) patients at a tertiary care hospital in North India. This is cross-sectional observational study. A total of 95 (68 males, 27 females) newly detected patients underwent clinical evaluation, biochemical assessment [serum calcium, phosphorus, alkaline phosphatase (ALP), albumin, creatinine, intact parathyroid hormone (iPTH), 25- hydroxyvitamin D (25(OH)D)], BMD measurement (at spine, hip, and forearm) by dual-energy X-ray absorptiometry (DXA), lateral abdominal radiograph [for abdominal aortic calcification (AAC)], skeletal survey (to look for any abnormality including fractures), and echocardiography [for any cardiac valvular calcification (CVC)]...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
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