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Ischemic mitral regurgitation

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https://www.readbyqxmd.com/read/29687703/surgical-myocardial-revascularization-in-patients-with-reduced-systolic-left-ventricular-function
#1
Piergiorgio Bruno, Mauro Iafrancesco, Massimo Massetti
Surgical myocardial revascularization in patients with reduced left ventricular function has been a matter of debate for decades. Recently published 10-years extension follow-up of the STICH trial have conclusively demonstrated benefit of surgical myocardial revascularization in patients with significant coronary artery disease and low left ventricular ejection fraction. However, selection of patients for surgery remains challenging as well as decision to perform percutaneous rather than surgical revascularization in this class of patients...
April 20, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29626079/acute-versus-chronic-ischemic-mitral-regurgitation-an-echocardiographic-study-of-anatomy-and-physiology
#2
Shun Nishino, Nozomi Watanabe, Toshiyuki Kimura, Nehiro Kuriyama, Yoshisato Shibata
BACKGROUND: Little is known on the mechanism of acute ischemic mitral regurgitation (IMR) caused by sudden-onset left ventricular dysfunction in acute myocardial infarction (MI). We sought to investigate the mitral valve (MV) complex geometry in acute IMR in comparison with chronic IMR by 2-dimensional and 3-dimensional transthoracic echocardiography. METHODS AND RESULTS: Forty-four first-onset acute MI and 36 previous MI with ≥moderate IMR were examined by 2-dimensional/3-dimensional transthoracic echocardiography...
April 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29617497/opcabg-for-moderate-cimr-in-elderly-patients-a-superior-option
#3
Amber Malhotra, Chandrasekaran Ananthanarayanan, Vivek Wadhawa, Sumbul Siddiqui, Pranav Sharma, Kartik Patel, Komal Shah, Pratik Shah
OBJECTIVE: To compare the early and late outcomes of off-pump coronary artery bypass grafting and coronary artery bypass graft + mitral valve repair in elderly patients with moderate chronic ischemic mitral regurgitation. METHODS: One hundred and fifty elderly (age > 70 years) patients with moderate chronic ischemic mitral regurgitation who underwent off-pump coronary artery bypass grafting (n=95) or coronary artery bypass graft + mitral valve repair (n=55) between January 2007 and December 2014 were studied...
January 2018: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29588148/spontaneous-chordae-tendineae-rupture-during-peripartum
#4
Feng-Han Chiu, Chih-Jen Yang, Chih-Kang Huang, Chih-Yuan Lin, Shih-Hung Tsai
Acute cardiopulmonary distress in pregnancy always carries exceptionally arduous challenge for physicians. Here we report a patient who sustained spontaneous chordae tendineae rupture complicated with severe mitral regurgitation and acute pulmonary edema during peripartum period. Probable causes of chordae tendineae rupture include mitral valve prolapse, infectious endocarditis, congenital heart disease, rheumatic heart disease, ischemic heart disease, connective tissue diseases, previous mitral valve surgery or pregnancy itself...
March 19, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29570209/long-term-outcomes-of-mitral-valve-annuloplasty-versus-subvalvular-sparing-replacement-for-severe-ischemic-mitral-regurgitation
#5
Baotong Li, Hengchao Wu, Hansong Sun, Jianping Xu, Yunhu Song, Wei Wang, Shuiyun Wang
BACKGROUND: Although practice guidelines recommend surgery for patients with severe chronic ischemic mitral regurgitation (CIMR), they do not specify whether to repair or replace the mitral valve. The purpose of this study was to evaluate the long-term outcomes in patients with severe CIMR undergoing mitral valve annuloplasty (MVA) versus subvalvular sparing mitral valve replacement (MVR). METHODS: 392 consecutive patients who underwent MVA or subvalvular sparing MVR for treatment of severe CIMR were retrospectively reviewed...
March 23, 2018: Cardiology Journal
https://www.readbyqxmd.com/read/29532654/moderate-ischemic-mitral-regurgitation-coronary-artery-bypass-grafting-with-versus-without-simultaneous-treatment-of-the-mitral-valve-is-associated-with-comparable-long-term-survival
#6
Jonathan Rilinger, Claudia Heilmann, Ulrich Beitinger, Christoph B Olivier, Philipp Diehl, Friedhelm Beyersdorf, Matthias Siepe
BACKGROUND: Ischemic mitral regurgitation (IMR) is a frequent complication of coronary artery heart disease and is associated with increased mortality. Controversies exists whether patients with moderate IMR may benefit from a combined procedure with coronary artery bypass grafting (CABG) and treatment of mitral regurgitation. METHODS: 451 patients with moderate IMR (grade 2) receiving either CABG alone (CABG only) or additional mitral valve repair or replacement (CABG+MV) were included in this observational single-centre study...
March 12, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29512090/predicting-functional-mitral-stenosis-after-restrictive-annuloplasty-for-ischemic-mitral-regurgitation
#7
Baotong Li, Hengchao Wu, Hansong Sun, Jianping Xu, Yunhu Song, Wei Wang, Shuiyun Wang
BACKGROUND: Although it has been realized that restrictive mitral valve annuloplasty (MVA) may result in clinically significant functional mitral stenosis (MS), it still cannot be predicted. The purpose of this study was to identify risk factors for clinically significant functional MS following restrictive MVA surgery for chronic ischemic mitral regurgitation (CIMR). METHODS: 114 patients who underwent restrictive MVA with coronary artery bypass grafting (CABG) for treatment of CIMR were retrospectively reviewed...
March 7, 2018: Cardiology Journal
https://www.readbyqxmd.com/read/29505505/a-case-report-with-shock-induced-by-tolvaptan-in-an-elderly-patient-with-congestive-heart-failure
#8
Zhi-Gang Zhang, Xin-Min Liu
RATIONALE: Tolvaptan (TLV) is a new vasopressin type 2 receptor antagonist effective in patients with heart failure (HF). Accumulating evidences have revealed that treatment with TLV does not alter the blood pressure significantly. PATIENT CONCERNS: An 84-year-old man was diagnosed with acute exacerbation of chronic HF due to ischemic cardiomyopathy, arrhythmia, mitral and aortic regurgitation. Treatment with TLV increased the urine volume and improved the dyspnea...
January 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29501661/ischemic-mitral-regurgitation-abnormal-strain-overestimates-non-viable-myocardium-commentary
#9
Olga N Kislitsina
No abstract text is available yet for this article.
February 28, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29501456/contemporary-management-of-ischemic-mitral-regurgitation-a-review
#10
REVIEW
Yader Sandoval, Paul Sorajja, Kevin M Harris
Ischemic mitral regurgitation occurs relatively frequently in patients with coronary artery disease and is associated with an increased long term risk. The pathophysiology of ischemic mitral regurgitation is vexing, and poses both diagnostic and therapeutic challenges, leading to the need for a comprehensive, multidisciplinary approach. The management is largely focused on medical therapy, and for those eligible, coronary revascularization and/or cardiac resynchronization therapy may be considered. In select patients, mitral valve surgery or catheter-based therapy may be undertaken with careful consideration of the underlying pathophysiology, surgical risk, and expected long-term outcomes...
February 28, 2018: American Journal of Medicine
https://www.readbyqxmd.com/read/29459111/a-trial-of-two-anesthetic-regimes-for-minimally-invasive-mitral-valve-repair
#11
Marco Moscarelli, Nora Terrasini, Anna Nunziata, Prakash Punjabi, Gianni Angelini, Marco Solinas, Alba Buselli, Paolo Del Sarto, Dorela Haxhiademi
OBJECTIVE: Minimally invasive mitral valve repair may be associated with prolonged cardioplegic arrest times and ischemic reperfusion injury. Intravenous (propofol) and volatile (sevoflurane) anesthesia are used routinely during cardiac surgery and are thought to provide cardioprotection; however, the individual contribution of each regimen to cardioprotection is unknown. Therefore, the authors sought to compare the cardioprotective effects of propofol and sevoflurane anesthesia in patients undergoing minimally invasive mitral valve repair...
January 31, 2018: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29399763/significant-mitral-regurgitation-predicts-the-long-term-prognosis-in-patients-receiving-cardiac-resynchronization-therapy
#12
Han Jin, Shengwen Yang, Wei Hua, Min Gu, Hongxia Niu, Ligang Ding, Jing Wang, Cong Xue, Shu Zhang
BACKGROUND: Cardiac resynchronization therapy (CRT) has been shown to reduce Functional mitral regurgitation (FMR), although the relationship between significant mitral regurgitation (SMR) and the clinical prognosis of CRT remains uncertain. AIM: To investigate the association of baseline of SMR with long-term outcomes in patients undergoing CRT. METHODS: A total of 296 consecutive patients undergoing CRT were enrolled. SMR was quantified by color Doppler in all the patients at baseline and defined as grading scale ≥ 3...
February 5, 2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29391146/ischemic-mitral-regurgitation-abnormal-strain-overestimates-non-viable-myocardium
#13
Ashley E Morgan, Yue Zhang, Mehrzad Tartibi, Samantha Goldburg, Jiwon J Kim, Thanh D Nguyen, Julius Guccione, Liang Ge, Jonathan W Weinsaft, Mark B Ratcliffe
BACKGROUND: Therapy for moderate ischemic mitral regurgitation (IMR) remains unclear. Determination of myocardial viability, a necessary pre-requisite for an improvement in regional contractility, is a likely key factor in determining response to revascularization alone. Myocardial strain has been proposed as a viability measure but has not been compared to late gadolinium enhancement (LGE) cardiac (c)MRI. We hypothesized that abnormal strain overestimates non-viable LV segments measured using LGE and that ischemia and mechanical tethering by adjacent transmural myocardial infarction (TMI) also decreases strain in viable segments...
January 29, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29387972/effect-of-cardiac-resynchronization-therapy-on-mitral-valve-geometry-a-novel-aspect-as-reversed-mitral-remodeling
#14
Oguz Karaca, Beytullah Cakal, Mehmet Onur Omaygenc, Haci Murat Gunes, Filiz Kizilirmak, Sinem Deniz Cakal, Deniz Dilan Naki, Irfan Barutcu, Bilal Boztosun, Fethi Kilicaslan
Amelioration of the valvular geometry is a possible mechanism for mitral regurgitation (MR) improvement in patients receiving cardiac resynchronization therapy (CRT). We aimed to establish the precise definition, incidence, and predictors of reversed mitral remodeling (RMR), as well as the association with MR improvement and short-term CRT outcome. Ninety-five CRT recipients were retrospectively evaluated for the end-point of "MR response" defined as the absolute reduction in regurgitant volume (RegV) at 6 months...
January 31, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29367688/mitral-valve-annuloplasty-versus-replacement-for-severe-ischemic-mitral-regurgitation
#15
Baotong Li, Shanglin Chen, Hansong Sun, Jianping Xu, Yunhu Song, Wei Wang, Shuiyun Wang
Although practice guidelines recommend surgery for patients with severe chronic ischemic mitral regurgitation (CIMR), they do not specify whether to repair or replace the mitral valve. 436 consecutive patients with severe CIMR were eligible for inclusion in the study, of which 316 (72.5%) underwent mitral valve annuloplasty (MVA) whereas 120 (27.5%) received mitral valve replacement (MVR). At 59 months (interquartile range, 37-85 months) follow-up, though the left ventricle end-diastolic diameter was markedly larger (P = 0...
January 24, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29342024/clinical-profile-of-patients-with-heart-failure-can-predict-rehospitalization-and-quality-of-life
#16
Michele Di Mauro, Renata Petroni, Daniela Clemente, Massimiliano Foschi, Fabrizio Tancredi, Virginia Camponetti, Sabina Gallina, Antonio M Calafiore, Maria Penco, Silvio Romano
BACKGROUND: The aim of this retrospective study was to identify clinical, humoral and echocardiographic variables predicting rehospitalization and poor quality of life (QOL) in patients with reduced or mid-range ejection fraction heart failure. METHODS: From 2009 to 2012, 310 patients were admitted having signs and symptoms of heart failure with reduced ejection fraction. All the patients were followed by phone, calling the patients or the referring general practitioner...
March 2018: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29321130/exercise-hemodynamic-and-functional-capacity-after-mitral-valve-replacement-in-patients-with-ischemic-mitral-regurgitation-a-comparison-of-mechanical-versus-biological-prostheses
#17
Carlo Fino, Attilio Iacovoni, Philippe Pibarot, John R Pepper, Paolo Ferrero, Maurizio Merlo, Lorenzo Galletti, Massimo Caputo, Paolo Ferrazzi, Constantinos Anagnostopoulos, Diego Cugola, Michele Senni, Diego Bellavia, Julien Magne
BACKGROUND: In patients with ischemic mitral regurgitation requiring mitral valve replacement (MVR), the choice of the prosthesis type is crucial. The exercise hemodynamic and functional capacity performance in patients with contemporary prostheses have never been investigated. To compare exercise hemodynamic and functional capacity between biological (MVRb) and mechanical (MVRm) prostheses. METHODS AND RESULTS: We analyzed 86 consecutive patients with ischemic mitral regurgitation who underwent MVRb (n=41) or MVRm (n=45) and coronary artery bypass grafting...
January 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29291344/diagnosis-and-management-of-ischemic-mitral-regurgitation-evidence-based-clinical-decision-making-at-the-point-of-care
#18
Ajay Kumar Jha, Vishwas Malik
Anatomical, functional, and pathophysiologic mechanisms of ischemic mitral regurgitation (IMR) are markedly different from the primary mitral regurgitation. The older and ubiquitous cutoff of EROA (effective regurgitant orifice area) and Rvol (regurgitant volume) for IMR has been reinstated in the new guideline after a brief hiatus. There had always been a lack of good-quality evidence for its introduction for guiding IMR severity in the previous guideline, and we still do not have quality evidences that could justify its reintroduction...
December 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29285527/spatiotemporal-segmentation-and-modeling-of-the-mitral-valve-in-real-time-3d-echocardiographic-images
#19
Alison M Pouch, Ahmed H Aly, Eric K Lai, Natalie Yushkevich, Rutger H Stoffers, Joseph H Gorman, Albert T Cheung, Joseph H Gorman, Robert C Gorman, Paul A Yushkevich
Transesophageal echocardiography is the primary imaging modality for preoperative assessment of mitral valves with ischemic mitral regurgitation (IMR). While there are well known echocardiographic insights into the 3D morphology of mitral valves with IMR, such as annular dilation and leaflet tethering, less is understood about how quantification of valve dynamics can inform surgical treatment of IMR or predict short-term recurrence of the disease. As a step towards filling this knowledge gap, we present a novel framework for 4D segmentation and geometric modeling of the mitral valve in real-time 3D echocardiography (rt-3DE)...
September 2017: Medical Image Computing and Computer-assisted Intervention: MICCAI ..
https://www.readbyqxmd.com/read/29273635/prevalence-characteristics-and-outcomes-of-valvular-heart-disease-in-patients-with-atrial-fibrillation-insights-from-the-orbit-af-outcomes-registry-for-better-informed-treatment-for-atrial-fibrillation
#20
Kevin L Thomas, Larry R Jackson, Peter Shrader, Jack Ansell, Gregg C Fonarow, Bernard Gersh, Peter R Kowey, Kenneth W Mahaffey, Daniel E Singer, Laine Thomas, Jonathan P Piccini, Eric D Peterson
BACKGROUND: The presence of valvular heart disease (VHD) may affect the risk of stroke and mortality in patients with atrial fibrillation (AF). Community-based estimates of prevalence and outcomes of specific forms of VHD in patients with AF are lacking. METHODS AND RESULTS: We examined the prevalence of VHD, anticoagulation use, mortality, stroke/transient ischemic attack, and bleeding among a community cohort of patients with AF. Significant VHD was defined as follows: (1) moderate/severe mitral stenosis or mechanical valve; (2) bioprosthetic valve, surgical repair, or balloon valvuloplasty; and (3) moderate/severe aortic regurgitation or stenosis, mitral regurgitation, or tricuspid regurgitation...
December 22, 2017: Journal of the American Heart Association
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