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https://www.readbyqxmd.com/read/29334508/practical-valvular-issues-in-patients-requiring-ventricular-assist-devices
#1
Mitesh Badiwala, Terrence Yau
PURPOSE OF REVIEW: As ventricular assist device (VAD) therapy in patients with advanced heart failure continues to grow, experience with concomitant valvular diseases present either before or after VAD implantation continues to accrue. In this review, we discuss recent data and current practice as it pertains to the subject of concomitant valvular disease in patients requiring VADs. RECENT FINDINGS: Persistent aortic valve closure has been identified as a potential contributor to aortic valve 'disuse atrophy' resulting in valve degeneration...
January 13, 2018: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29325846/hospital-outcome-and-risk-indices-of-mortality-in-potential-candidates-for-transcatheter-procedures-results-from-a-european-registry
#2
Francesco Onorati, Giovanni Mariscalco, Daniel Reichart, Andrea Perrotti, Giuseppe Gatti, Marisa De Feo, Antonio Rubino, Giuseppe Santarpino, Fausto Biancari, Christian Detter, Francesco Santini, Giuseppe Faggian
OBJECTIVE: Transcatheter mitral valve-in-valve/valve-in-ring procedures (TM-VIVoR) are increasing. The authors aimed to identify independent predictors for hospital mortality in redo mitral valve surgery as possible future selection criteria for TM-VIVoR. DESIGN: Retrospective multicenter registry. SETTING: Tertiary university and community hospitals. PARTICIPANTS: Two-hundred and sixty patients (out of 920 enrolled) who are potentially candidates for TM-VIVoR undergoing redo-surgery...
September 28, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29321434/tricuspid-and-mitral-valve-regurgitation-with-bi-fascicular-block-following-a-horse-kick
#3
Tomoki Kokubun, Masayoshi Oikawa, Yasuhiro Ichijo, Yoshiyuki Matsumoto, Tetsuro Yokokawa, Kazuhiko Nakazato, Yoshiyuki Sato, Shinya Takase, Hiroharu Shinjo, Hitoshi Yokoyama, Hitoshi Suzuki, Shu-Ichi Saitoh, Yasuchika Takeishi
A 40-year-old man was transferred to our hospital following an isolated horse kick injury to the anterior chest wall. The case showed bi-fascicular block, severe tricuspid valve regurgitation due to ruptured chordae tendineae of the anterior leaflet, moderate mitral valve regurgitation due to prolapse of mitral anterior leaflet, and hypokinetic motion of the inferior septal wall. Both tricuspid and mitral insufficiency were completely repaired by a surgical operation. Fortunately, these injuries were not fatal in this case, but the comprehensive assessment of cardiac damage and careful observation are important for managing patients with cardiac injury...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29316158/reduced-stroke-distance-of-the-left-ventricular-outflow-tract-is-independently-associated-with-long-term-mortality-in%C3%A2-patients-hospitalized-due-to-heart-failure
#4
You Zhong, Qays Almodares, JieFu Yang, Fang Wang, Michael Fu, Magnus C Johansson
PURPOSE: Reduced blood circulation is an important feature of heart failure, and Doppler stroke distance of the left ventricular outflow tract is a measure of forward stroke volume. Several echocardiographic parameters have known prognostic implications in heart failure, but the prognostic implications of stroke distance in relation to other parameters are insufficiently known. The aim was therefore to test the hypothesis that stroke distance is associated with five-year all-cause mortality, independently of other echocardiography variables, and that stroke distance has added long-term prognostic value...
January 9, 2018: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29307159/calculation-of-mitral-valve-area-in-mitral-stenosis-comparison-of-continuity-equation-and-pressure-half-time-with-two-dimensional-planimetry-in-patients-with-and-without-associated-aortic-or-mitral-regurgitation-or-atrial-fibrillation
#5
Roya Sattarzadeh, Anahita Tavoosi, Mohammad Saadat, Leila Derakhshan, Bakhtyar Khosravi, Babak Geraiely
Accurate measurement of Mitral Valve Area (MVA) is essential to determining the Mitral Stenosis (MS) severity and to achieving the best management strategies for this disease. The goal of the present study is to compare mitral valve area (MVA) measurement by Continuity Equation (CE) and Pressure Half-Time (PHT) methods with that of 2D-Planimetry (PL) in patients with moderate to severe mitral stenosis (MS). This comparison also was performed in subgroups of patients with significant Aortic Insufficiency (AI), Mitral Regurgitation (MR) and Atrial Fibrillation (AF)...
November 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/29275952/late-onset-of-atrial-fibrillation-in-patients-undergoing-mitral-valve-repair-for-type-ii-dysfunction
#6
Naonori Kawamoto, Tomoyuki Fujita, Satsuki Fukushima, Yusuke Shimahara, Yuta Kume, Yorihiko Matsumoto, Kizuku Yamashita, Junjiro Kobayashi
BACKGROUND: There are few reports regarding factors related to late-onset of atrial fibrillation (Af) after mitral valve repair, which can compromise long-term outcome. We analyzed the risk factors for late Af after mitral valve repair. METHODS AND RESULTS: Between 2001 and 2015, 318 patients (214 males; median, 57.7 years) underwent mitral valve repair for degenerative mitral insufficiency (MI) without concomitant aortic valve disease in our institute. Patients with a history of paroxysmal or chronic Af preoperatively were excluded...
December 21, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/29248661/mitral-valve-adaptation-to-isolated-annular-dilation-insights-into-the-mechanism-of-atrial-functional-mitral%C3%A2-regurgitation
#7
Dae-Hee Kim, Ran Heo, Mark D Handschumacher, Sahmin Lee, Yun-Sil Choi, Kyu-Ri Kim, Yewon Shin, Hong-Kyung Park, Joyce Bischoff, Elena Aikawa, Jong-Min Song, Duk-Hyun Kang, Robert A Levine, Jae-Kwan Song
OBJECTIVES: This study hypothesized that compensatory mitral leaflet area (MLA) adaptation occurs in patients with persistent atrial fibrillation (AF) without left ventricular (LV) dysfunction but has limitations that augment mitral regurgitation (MR). The study also explored whether asymmetrical annular dilation is matched by relative leaflet enlargement. BACKGROUND: Functional MR occurs in patients with AF and isolated annular dilation, but the relationship of MLA adaptation with annular area (AA) is unknown...
December 8, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29237465/mid-term-results-of-mitral-valve-repair-using-flexible-bands-versus-complete-rings-in-patients-with-degenerative-mitral-valve-disease-a-prospective-randomized-study
#8
Alexandr V Bogachev-Prokophiev, Alexandr V Afanasyev, Sergei I Zheleznev, Vladimir M Nazarov, Ravil M Sharifulin, Alexandr M Karaskov
BACKGROUND: We aimed to compare the outcomes of mitral valve repair with flexible band (FB) versus complete semirigid ring (SR) in degenerative mitral valve disease patients. METHODS: From September 2011 to 2014, 171 patients were randomized and underwent successful mitral valve repair using a SR (n = 85) or FB (n = 86). There were no significant between-group differences at baseline. RESULTS: There were no early mortalities. The mean follow up was 24...
December 13, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29185615/predictors-of-total-mortality-and-echocardiographic-response-for-cardiac-resynchronization-therapy-a-cohort-study
#9
Guilherme Ferreira Gazzoni, Matheus Bom Fraga, Andres Di Leoni Ferrari, Pablo da Costa Soliz, Anibal Pires Borges, Eduardo Bartholomay, Carlos Antonio Abunader Kalil, Vanessa Giaretta, Luis Eduardo Paim Rohde
BACKGROUND: Clinical studies demonstrate that up to 40% of patients do not respond to cardiac resynchronization therapy (CRT), thus, appropriate patient selection is critical to the success of CRT in heart failure. OBJECTIVE: Evaluation of mortality predictors and response to CRT in the Brazilian scenario. METHODS: Retrospective cohort study including patients submitted to CRT in a tertiary hospital in southern Brazil from 2008 to 2014. Survival was assessed through a database of the State Department of Health (RS)...
November 27, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/29137910/tamponade-hemodynamic-and-echocardiographic-diagnosis
#10
REVIEW
Mark J Kearns, Keith R Walley
Cardiac tamponade is a medical emergency that can be readily reversed with timely recognition and appropriate intervention. The clinical diagnosis of cardiac tamponade requires synthesis of a constellation of otherwise non-specific features, based on an understanding of the underlying pathophysiology. Whereas echocardiographic examination is a central component of diagnosis, alone it is insufficient to establish the physiologic diagnosis of hemodynamically significant cardiac tamponade. The hemodynamic diagnosis of cardiac tamponade requires clinical evidence of low cardiac output and stroke volume in the setting of elevated cardiac filling pressures, with evidence of increased sympathetic tone (tachycardia, peripheral vasoconstriction, etc), and exclusion of other causes of shock as the primary problem (particularly cardiogenic shock)...
November 11, 2017: Chest
https://www.readbyqxmd.com/read/29134238/a-comparison-of-anterograde-versus-retrograde-approaches-for-neonatal-balloon-aortic-valvuloplasty
#11
Namrita Mozumdar, Edmund Burke, Melissa Schweizer, Matthew J Gillespie, Yoav Dori, Hari K Narayan, Jonathan J Rome, Andrew C Glatz
In neonates requiring balloon aortic valvuloplasty, both anterograde and retrograde approaches are feasible. A recent comparison of these two approaches is lacking. A retrospective cohort study of neonates at a single center undergoing BAV from 9/00 to 7/14 was performed. Records were reviewed including pre- and post-intervention echocardiograms and catheterization data. Comparisons of acute efficacy and procedural safety were made based on type of approach utilized. Forty-two neonates underwent BAV. Eleven cases utilized exclusively an anterograde approach, while 31 included a retrograde approach (including 4 with both approaches used)...
November 13, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29110936/right-versus-left-apical-transvenous-pacing-for-bradycardia-results-of-the-rivela-randomized-study
#12
Haran Burri, Hajo Müller, Richard Kobza, Christian Sticherling, Peter Ammann, Heiko Zerlik, Carine Stettler, Catherine Klersy, Frits Prinzen, Angelo Auricchio
AIMS: To compare cardiac function when pacing from the right or left ventricular apex in patients with preserved left ventricular systolic function, at 1-year follow-up. METHODS: Prospective, multicentre centre randomizing conventional right ventricular apical (RVA) versus left ventricular apical (LVA) pacing using a coronary sinus lead in patients requiring ventricular pacing for bradycardia. Follow-up was performed using 3D-echocardiography at 6 and 12 months...
October 27, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29106557/surgical-results-of-mitral-valve-repair-for-congenital-mitral-valve-stenosis-in-paediatric-patients
#13
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/29092036/antegrade-transseptal-approach-for-left-ventricular-tachyarrhythmia-in-patients-with-previous-mitraclip-implantation
#14
Kentaro Hayashi, Christian-H Heeger, Shibu Mathew, Tilman Maurer, Christine Lemes, Johannes Riedl, Bruno Reißmann, Christian Frerker, Stephan Geidel, Michael Schmoeckel, Ardan M Saguner, Francesco Santoro, Roland Richard Tilz, Andreas Metzner, Karl-Heinz Kuck, Feifan Ouyang
Aims: Antegrade-transseptal approach to treat left ventricular tachyarrhythmia (LVT) is useful and widespread. Meanwhile, Mitraclip has been recently introduced as an alternative to mitral valve surgery for severe mitral regurgitation, usually coexisting with ventricular arrhythmias. However, data on the antegrade approach for mapping and ablating LVT in these patients are insufficient. We evaluated the feasibility and clinical impact of the antegrade approach for LVT after Mitraclip implantation...
October 30, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29080191/computational-analysis-of-the-effect-of-mitral-and-aortic-regurgitation-on-the-function-of-ventricular-assist-devices-using-3d-cardiac-electromechanical-model
#15
Yoo Seok Kim, Ana R Yuniarti, Kwang-Soup Song, Natalia A Trayanova, Eun Bo Shim, Ki Moo Lim
Valvular insufficiency affects cardiac responses and the pumping efficacy of left ventricular assist devices (LVADs) when patients undergo LVAD therapy. Knowledge of the effect of valvular regurgitation on the function of LVADs is important when treating heart failure patients. The goal of this study was to examine the effect of valvular regurgitation on the ventricular mechanics of a heart under LVAD treatment and the pumping efficacy of an LVAD using a computational model of the cardiovascular system. For this purpose, a 3D electromechanical model of failing ventricles in a human heart was coupled with a lumped-parameter model of valvular regurgitation and an LVAD-implanted vascular system...
October 28, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29064176/calciphylaxis-after-parathyroidectomy
#16
Sathish Karmegam, Anupkumar Shetty
A 60-year-old African American man with end stage renal disease on hemodialysis (HD) for the past 2.5 years developed severe hyperparathyroidism. Other past medical history included atrial fibrillation, type II diabetes mellitus, hypertension, gout, pericardial effusion needing pericardial window, deep vein thrombosis, mitral insufficiency, and cardiomyopathy with implantable cardioversion device placement. His parathyroid hormone (PTH) level peaked at 4,191 pg/mL despite being on cinacalcet, sevelamer, and paricalcitol...
October 2017: Hemodialysis International
https://www.readbyqxmd.com/read/29062380/anomalous-left-coronary-artery-from-the-pulmonary-artery-presenting-with-atypical-chest-pain-in-an-adult-a-case-report
#17
Reza Jafarzadeh Esfehani, Sara Hosseini, Mahmood Ebrahimi, Majid Jalalyazdi, Azadeh Mahmoudi Gharaee
The anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital anomaly. The usual clinical course is severe left-sided heart failure and mitral valve insufficiency presenting during the first months of life. However, in some cases, the collateral blood supply from the right coronary artery is sufficient and symptoms may be subtle or even absent. We describe a 49-year-old woman presenting with atypical chest pain during physical exertion. The exercise tolerance test and then coronary angiography by indication revealed an anomalous origin of the left coronary artery...
July 2017: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/29058110/computational-prediction-of-the-effects-of-the-intra-aortic-balloon-pump-on-heart-failure-with-valvular-regurgitation-using-a-3d-cardiac-electromechanical-model
#18
Chang-Hyun Kim, Kwang-Soup Song, Natalia A Trayanova, Ki Moo Lim
Intra-aortic balloon pump (IABP) is normally contraindicated in significant aortic regurgitation (AR). It causes and aggravates pre-existing AR while performing well in the event of mitral regurgitation (MR). Indirect parameters, such as the mean systolic pressure, product of heart rate and peak systolic pressure, and pressure-volume are used to quantify the effect of IABP on ventricular workload. However, to date, no studies have directly quantified the reduction in workload with IABP. The goal of this study is to examine the effect of IABP therapy on ventricular mechanics under valvular insufficiency by using a computational model of the heart...
October 23, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29024827/left-ventricular-non-compaction-with-ebstein-anomaly-attributed-to-a-tpm1-mutation
#19
Aleksandra Nijak, Maaike Alaerts, Cuno Kuiperi, Anniek Corveleyn, Bert Suys, Bernard Paelinck, Johan Saenen, Emeline Van Craenenbroeck, Lut Van Laer, Bart Loeys, Aline Verstraeten
Left ventricular non-compaction (cardiomyopathy) (LVN(C)) is a rare hereditary cardiac condition, resulting from abnormal embryonic myocardial development. While it mostly occurs as an isolated condition, association with other cardiovascular manifestations such as Ebstein anomaly (EA) has been reported. This congenital heart defect is characterized by downward displacement of the tricuspid valve and leads to diminished ventricular size and function. In an autosomal dominant LVN(C) family consisting of five affected individuals, of which two also presented with EA and three with mitral valve insufficiency, we pursued the genetic disease cause using whole exome sequencing (WES)...
October 9, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28994654/impact-of-concomitant-mitral-regurgitation-on-transvalvular-gradient-and-flow-in-severe-aortic-stenosis-a-systematic-ex-vivo-analysis-of-a-subentity-of-low-flow-low-gradient-aortic-stenosis
#20
Felix Katte, Marcus Franz, Christian Jung, Hans R Figulla, David M Leistner, Philipp Jakob, Barbara E Stähli, Daniel Kretzschmar, Alexander Lauten
AIMS: Evaluation of aortic stenosis(AS) is based on measurement of mean transvalvular gradient(MPG), flow velocity(vmax) and aortic valve area(AVA). Objective of the present study was to analyse the impact of systemic hemodynamic variables and concomitant mitral regurgitation(MR) on aortic MPG, vmax and AVA in severe AS. METHODS AND RESULTS: A pulsatile circulatory model was designed to study function and interdependence of stenotic aortic and insufficient mitral prosthetic valves (n=8; effective regurgitation orifice (EROA)<0...
October 10, 2017: EuroIntervention
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