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Van der Bijl P, Stassen J, Haugaa KH, Essayagh B, Basso C, Thiene G, Faletra FF, Edvardsen T, Enriquez-Sarano M, Nihoyannopoulos P, Ajmone Marsan N, Chandrashekhar YS, Bax JJ. Mitral Annular Disjunction in the Context of Mitral Valve Prolapse: Identifying the At-Risk Patient. JACC Cardiovasc Imaging 2024:S1936-878X(24)00119-0. [PMID: 38703174 DOI: 10.1016/j.jcmg.2024.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 03/07/2024] [Accepted: 03/11/2024] [Indexed: 05/06/2024]
Abstract
Mitral annular disjunction (MAD), a separation between the left atrium/mitral valve annulus and the left ventricular myocardium, is frequently seen in patients with arrhythmic mitral valve prolapse. Although an association exists between MAD and ventricular arrhythmias, little is known regarding the identification of individuals at high risk. Multimodality imaging including echocardiography, computed tomography, cardiac magnetic resonance, and positron emission tomography can play an important role in both the diagnosis and risk stratification of MAD. Due to a paucity of data, clinical decision making in a patient with MAD is challenging and remains largely empirical. Although MAD itself can be corrected surgically, the prevention and treatment of associated arrhythmias may require medical therapy, catheter ablation, and an implantable cardioverter-defibrillator. Prospective data are required to define the role of implantable cardioverter-defibrillators, targeted catheter ablation, and surgical correction in selected, at-risk patients.
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Affiliation(s)
- Pieter Van der Bijl
- Department of Cardiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Jan Stassen
- Department of Cardiology, Leiden University Medical Center, Leiden, the Netherlands; Department of Cardiology, Jessa Hospital, Hasselt, Belgium
| | - Kristina H Haugaa
- ProCardio Center for Innovation, Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway; Faculty of Medicine, Huddinge, Karolinska Institute and Cardiovascular Division, Karolinska University Hospital, Stockholm, Sweden
| | - Benjamin Essayagh
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA; Department of Echocardiography, CardioXClinic, Cannes, France
| | - Cristina Basso
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Gaetano Thiene
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | | | - Thor Edvardsen
- Department of Cardiology, Oslo University Hospital, Rikshospitalet and University of Oslo, Oslo, Norway
| | | | | | - Nina Ajmone Marsan
- Department of Cardiology, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Jeroen J Bax
- Department of Cardiology, Leiden University Medical Center, Leiden, the Netherlands.
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Malagoli A, Albini A, Benfari G, Ilardi F, Lisi M, Mandoli GE, Pastore MC, Sperlongano S, Cameli M, D'Andrea A. Arrhythmic mitral valve prolapse: a practical approach for asymptomatic patients. Eur Heart J Cardiovasc Imaging 2024; 25:293-301. [PMID: 38061000 DOI: 10.1093/ehjci/jead332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 02/24/2024] Open
Abstract
Mitral valve prolapse (MVP) is usually regarded as a benign condition though the proportion of patients with a life-threatening arrhythmic MVP form remains undefined. Recently, an experts' consensus statement on arrhythmic MVP has proposed approaches for risk stratification across the spectrum of clinical manifestation. However, sudden cardiac death may be the first presentation, making clinicians focused to early unmasking this subset of asymptomatic patients. Growing evidence on the role of cardiac imaging in the in-deep stratification pathway has emerged in the last decade. Pathology findings have suggested the fibrosis of papillary muscles and inferobasal left ventricular wall as the malignant hallmark. Cardiac magnetic resonance, while of limited availability, allows the identification of this arrhythmogenic substrate. Therefore, speckle-tracking echocardiography may be a gateway to prompt referring patients to further advanced imaging investigation. Our review aims to summarize the phenotypic features linked to the arrhythmic risk and to propose an image-based algorithm intended to help stratifying asymptomatic MVP patients.
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Affiliation(s)
- Alessandro Malagoli
- Division of Cardiology, Nephro-Cardiovascular Department, Baggiovara Hospital, University of Modena and Reggio Emilia, 1355 Pietro Giardini Street, Modena 41126, Italy
| | - Alessandro Albini
- Division of Cardiology, Department of Cardiac, Thoracic and Vascular diseases, IRCCS San Gerardo dei Tintori Foundation, Monza, Italy
| | - Giovanni Benfari
- Division of Cardiology, Department of Medicine, University of Verona, Verona, Italy
| | - Federica Ilardi
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Matteo Lisi
- Department of Cardiovascular Disease-AUSL Romagna, Division of Cardiology, Ospedale S. Maria delle Croci, Ravenna, Italy
| | - Giulia Elena Mandoli
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Siena, Italy
| | - Maria Concetta Pastore
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Siena, Italy
| | - Simona Sperlongano
- Division of Cardiology, Department of Translational Medical Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Matteo Cameli
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Siena, Italy
| | - Antonello D'Andrea
- Division of Cardiology, Department of Translational Medical Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
- Department of Cardiology, Umberto I Hospital, Nocera Inferiore, Italy
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3
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Khoo NS. Time to Look Up from Two Dimensions to See the Third in Mitral Valve Research. J Am Soc Echocardiogr 2024; 37:268-269. [PMID: 38309836 DOI: 10.1016/j.echo.2023.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 12/08/2023] [Indexed: 02/05/2024]
Affiliation(s)
- Nee Scze Khoo
- Department of Pediatrics, Univeristy of Alberta, Stollery Children's Hospital, Edmonton, Alberta, Canada.
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Zhou N, Liu A, Weng H, Liu W, Tian F, Zhao W, Ma J, Guo W, Chen H, Pan C, Shu X. Three-dimensional echocardiography reveals early mitral valve alterations in hypertrophic cardiomyopathy genetic mutation carriers. Int J Cardiol 2024; 395:131576. [PMID: 37949234 DOI: 10.1016/j.ijcard.2023.131576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 09/23/2023] [Accepted: 11/06/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND The mitral valve undergoes structural modifications in response to cardiac functional changes, often predating cardiac decompensation and overt clinical signs. Our study assessed the potential of mitral valve morphological changes as early indicators for detecting carriers of hypertrophic cardiomyopathy (HCM)-associated gene mutations. METHODS We studied 505 participants: 189 without the pathogenic gene mutations and left ventricular hypertrophy (G-/LVH-), 149 carriers without LV hypertrophy (G+/LVH-), and 167 manifest HCM patients (G+/LVH+). We juxtaposed the mitral valve morphology and associated metrics across these groups, emphasizing those carrying MYH7 and MYBPC3 mutations. RESULTS We discerned pronounced disparities in the mitral annulus and leaflet structures across the groups. The mitral valve apparatus in mutation carriers exhibited a tendency towards a flattened profile. Detailed analysis spotlighted MYBPC3 mutation carriers, whose mitral valves were notably flatter (with notably lower AHCWR values than non-carriers); this contrast was not evident in MYH7 mutation carriers. This mitral valve flattening, manifest in the mutation carriers, suggests it might be an adaptive response to incipient cardiac dysfunction in HCM's nascent stages. CONCLUSIONS Three-dimensional echocardiography illuminates the initial mitral valve structural changes in HCM patients bearing pathogenic gene mutations. These morphological signatures hold promise as sensitive imaging markers, especially for asymptomatic carriers of the MYBPC3 mutation.
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Affiliation(s)
- Nianwei Zhou
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Ao Liu
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Haobo Weng
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Wen Liu
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Fangyan Tian
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Weipeng Zhao
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Jing Ma
- Department of Echocardiography, Shanghai Xuhui District Central Hospital, Huaihai Middle Road 966, Xuhui District, Shanghai, China
| | - Wei Guo
- Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Haiyan Chen
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Cuizhen Pan
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital,Fudan University,Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Fenglin Road 180, Xuhui District, Shanghai, China; Department of Echocardiography, Shanghai Xuhui District Central Hospital, Huaihai Middle Road 966, Xuhui District, Shanghai, China.
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Kim DH. Multimodality Imaging for the Assessment of Mitral Valve Disease. Interv Cardiol Clin 2024; 13:115-125. [PMID: 37980062 DOI: 10.1016/j.iccl.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2023]
Abstract
Mitral valve disease is the most common valvular heart disease. Imaging determines the etiology (anatomic assessment), valve function and severity of valvular heart disease (hemodynamic assessment), remodeling of the left ventricle and right ventricle, and preplanning and guidance of percutaneous intervention. Although roles of computed tomography and magnetic resonance are increasing, echocardiography serves as the first-line imaging modality for the diagnosis and serial follow-up in most cases. This review summarizes the roles of multimodality imaging currently available from research fields to daily clinical practice.
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Affiliation(s)
- Dae-Hee Kim
- Division of Cardiology, Asan Medical Center, College of Medicine, University of Ulsan, 388-1, Poongnap-dong, Songpa-ku, Seoul 138-736, Korea.
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6
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Gray R, Indraratna P, Cranney G, Lam H, Yu J, Mathur G. Mitral annular disjunction in surgical mitral valve prolapse: prevalence, characteristics and outcomes. Echo Res Pract 2023; 10:21. [PMID: 37936252 PMCID: PMC10631076 DOI: 10.1186/s44156-023-00032-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 10/09/2023] [Indexed: 11/09/2023] Open
Abstract
BACKGROUND There is a paucity of literature regarding outcomes of patients with mitral valve prolapse (MVP) and mitral annular disjunction (MAD) after mitral surgery, with many unanswered questions including the post-surgical persistence of MAD, effect of MAD on mitral valve reparability, and incidence of arrhythmia after mitral valve surgery. We aimed to examine the prevalence, imaging characteristics and clinical associations of mitral annular disjunction among patients undergoing mitral valve surgery for mitral valve prolapse, as well as outcomes after surgery including the persistence of MAD, arrhythmic events and excess mortality. RESULTS A retrospective analysis of 111 consecutive patients who underwent mitral valve surgery for MVP was performed. A total of 32 patients (28.8%) had MAD. Patients with MAD were younger (64 vs 67 yrs, p = 0.04), with lower rates of hypertension (21.9% vs 50.6%, p = 0.01) and hyperlipidaemia (25% vs 50.6%; p = 0.01) and were more likely to be female (43.8% vs 21.4%, p = 0.04) with myxomatous leaflets > 5mm (90.6% vs 15.2%, p = < 0.01) and bileaflet prolapse (31.3% vs 10.1%, p = 0.02). Mitral valve repair was performed in 29/32 patients (90.6%) in the MAD positive group, and no patients had the persistence of MAD post-surgery. Post-operative ventricular arrhythmia was higher in the MAD positive group (28.13% vs 11.69%, p = 0.04) with no difference in mortality, 30-day hospital re-admission, or post-operative mitral regurgitation between patients with and without MAD over 3.91 years of follow up. CONCLUSION In this study of consecutive patients with MVP undergoing surgery, MAD was a common finding (almost 1 in 3). MAD does not compromise mitral valve surgical reparability, and both repair and replacement are effective at correcting disjunction. Our data suggest that concurrent MAD in MVP patients undergoing surgery has no significant effect on post surgical outcomes. Further research as to whether this patient cohort requires post-surgical arrhythmia monitoring is warranted.
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Affiliation(s)
- Rhys Gray
- Department of Cardiology, Prince of Wales Hospital, Sydney, NSW, Australia.
| | - Praveen Indraratna
- Department of Cardiology, Prince of Wales Hospital, Sydney, NSW, Australia
| | - Gregory Cranney
- Department of Cardiology, Prince of Wales Hospital, Sydney, NSW, Australia
| | - Hebe Lam
- University of New South Wales, Sydney, Australia
| | - Jennifer Yu
- Department of Cardiology, Prince of Wales Hospital, Sydney, NSW, Australia
| | - Gita Mathur
- Department of Cardiology, Prince of Wales Hospital, Sydney, NSW, Australia
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7
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de Oliveira DC, Espino DM, Deorsola L, Buchan K, Dawson D, Shepherd DET. A geometry-based finite element tool for evaluating mitral valve biomechanics. Med Eng Phys 2023; 121:104067. [PMID: 37985031 DOI: 10.1016/j.medengphy.2023.104067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 09/08/2023] [Accepted: 10/30/2023] [Indexed: 11/22/2023]
Abstract
Mitral valve function depends on its complex geometry and tissue health, with alterations in shape and tissue response affecting the long-term restorarion of function. Previous computational frameworks for biomechanical assessment are mostly based on patient-specific geometries; however, these are not flexible enough to yield a variety of models and assess mitral closure for individually tuned morphological parameters or material property representations. This study details the finite element approach implemented in our previously developed toolbox to assess mitral valve biomechanics and showcases its flexibility through the generation and biomechanical evaluation of different models. A healthy valve geometry was generated and its computational predictions for biomechanics validated against data in the literature. Moreover, two mitral valve models including geometric alterations associated with disease were generated and analysed. The healthy mitral valve model yielded biomechanical predictions in terms of valve closure dynamics, leaflet stresses and papillary muscle and chordae forces comparable to previous computational and experimental studies. Mitral valve function was compromised in geometries representing disease, expressed by the presence of regurgitating areas, elevated stress on the leaflets and unbalanced subvalvular apparatus forces. This showcases the flexibility of the toolbox concerning the generation of a range of mitral valve models with varying geometric definitions and material properties and the evaluation of their biomechanics.
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Affiliation(s)
- Diana C de Oliveira
- Department of Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom; Current affiliation: Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom.
| | - Daniel M Espino
- Department of Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Luca Deorsola
- Paedriatic Cardiac Surgery, Ospedale Infantile Regina Margherita Sant Anna, Turin 10126, Italy
| | - Keith Buchan
- Department of Cardiothoracic Surgery, Aberdeen Royal Infirmary, Aberdeen AB24 2ZN, Scotland, UK
| | - Dana Dawson
- School of Medicine, University of Aberdeen, Aberdeen AB25 2ZD, Scotland, UK; Cardiology Department, Aberdeen Royal Infirmary, Aberdeen AB25 2ZN, Scotland, UK
| | - Duncan E T Shepherd
- Department of Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
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8
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Ge Z, Hu C, Zhao Y, Tian F, Wang Y, Kong D, Li W, Xie Y, Ge Z, Fulati Z, Cheng Y, Guo Y, Jiang Y, Pan C, Shu X. Secondary leaflet tethering in patients with severe degenerative mitral regurgitation and its association with the severity of mitral regurgitation. Echocardiography 2023; 40:932-941. [PMID: 37498192 DOI: 10.1111/echo.15657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/05/2023] [Accepted: 07/16/2023] [Indexed: 07/28/2023] Open
Abstract
BACKGROUND The purpose of the study was to determine the association between vena contracta area (VCA) and secondary leaflet tethering among mitral valve prolapse (MVP) patients, and thus to further identify and characterize an MVP with pathological leaflet tethering (MVPt+) phenotype. METHODS We prospectively evaluated 94 consecutive MVP patients with significant mitral regurgitation (MR) and 21 healthy controls. MVPt+ group was defined as tenting volume index (TVi) > .7 mL/m2 . The three-dimensional (3D) geometry of mitral valve apparatus and VCA was measured with dedicated quantification software. RESULTS Of the 94 patients with MVP and significant MR, 31 patients showed a TVi > .7 mL/m2 and entered the MVP with leaflet tethering (MVPt+) group. In stepwise multivariate analysis, only prolapse volume index and TVi were independently associated with 3D VCA. 3D VCA, annular area index, and plasma levels of NT-proBNP were independently correlated with the severity of leaflet tethering. ROC curve revealed that a 3D VCA ≥ .55 cm2 is the optimal cutoff point to predict MVPt+ phenotype. CONCLUSIONS Secondary leaflet tethering is a significant mechanism behind severe degenerative MR, resulting in an MVPt+ phenotype featuring more advanced morphological and hemodynamical characteristics.
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Affiliation(s)
- Zhenyi Ge
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
| | - Chunqiang Hu
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
| | - Yingjie Zhao
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
| | - Fangyan Tian
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
| | - Yongshi Wang
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Dehong Kong
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wei Li
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yashu Xie
- ChengDu Healthcare Security Administration, Sichuan, China
| | - Zhengdan Ge
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
| | - Zibire Fulati
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yufei Cheng
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yao Guo
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yingying Jiang
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cuizhen Pan
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
| | - Xianhong Shu
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
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Essayagh B, Sabbag A, El-Am E, Cavalcante JL, Michelena HI, Enriquez-Sarano M. Arrhythmic mitral valve prolapse and mitral annular disjunction: pathophysiology, risk stratification, and management. Eur Heart J 2023; 44:3121-3135. [PMID: 37561995 DOI: 10.1093/eurheartj/ehad491] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 06/11/2023] [Accepted: 07/19/2023] [Indexed: 08/12/2023] Open
Abstract
Mitral valve prolapse (MVP) is the most frequent valve condition but remains a conundrum in many aspects, particularly in regard to the existence and frequency of an arrhythmic form (AMVP) and its link to sudden cardiac death. Furthermore, the presence, frequency, and significance of the anatomic functional feature called mitral annular disjunction (MAD) have remained widely disputed. Recent case series and cohorts have shattered the concept that MVP is most generally benign and have emphasized the various phenotypes associated with clinically significant ventricular arrhythmias, including AMVP. The definition, evaluation, follow-up, and management of AMVP represent the focus of the present review, strengthened by recent coherent studies defining an arrhythmic MVP phenotypic that would affect a small subset of patients with MVP at concentrated high risk. The role of MAD in this context is of particular importance, and this review highlights the characteristics of AMVP phenotypes and MAD, their clinical, multimodality imaging, and rhythmic evaluation. These seminal facts lead to proposing a risk stratification clinical pathway with consideration of medical, rhythmologic, and surgical management and have been objects of recent expert consensus statements and of proposals for new research directions.
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Affiliation(s)
- Benjamin Essayagh
- From the Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street S.W., Rochester, MN 55905, USA
- Department of Echocardiography, Cardio X Clinic, Cannes, France
| | - Avi Sabbag
- The Davidai Center for Rhythm Disturbances and Pacing, Chaim Sheba Medical Center, Tel Hashomer and the Sackler School of Medicine, Tel Aviv University, Ramat-Gan, Israel
| | - Edward El-Am
- From the Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street S.W., Rochester, MN 55905, USA
| | - João L Cavalcante
- Department of Cardiovascular Medicine, Allina Health Minneapolis Heart Institute - Abbott Northwestern Hospital, 800 E 28th St, Minneapolis, MN 55407, USA
| | - Hector I Michelena
- From the Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street S.W., Rochester, MN 55905, USA
| | - Maurice Enriquez-Sarano
- Department of Cardiovascular Medicine, Allina Health Minneapolis Heart Institute - Abbott Northwestern Hospital, 800 E 28th St, Minneapolis, MN 55407, USA
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10
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Segreti A, Celeski M, Monticelli LM, Perillo A, Crispino SP, Di Gioia G, Cammalleri V, Fossati C, Mega S, Papalia R, Pigozzi F, Ussia GP, Grigioni F. Mitral and Tricuspid Valve Disease in Athletes. J Clin Med 2023; 12:jcm12103562. [PMID: 37240669 DOI: 10.3390/jcm12103562] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 04/29/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Observing mitral or tricuspid valve disease in an athlete raises many considerations for the clinician. Initially, the etiology must be clarified, with causes differing depending on whether the athlete is young or a master. Notably, vigorous training in competitive athletes leads to a constellation of structural and functional adaptations involving cardiac chambers and atrioventricular valve systems. In addition, a proper evaluation of the athlete with valve disease is necessary to evaluate the eligibility for competitive sports and identify those requiring more follow-up. Indeed, some valve pathologies are associated with an increased risk of severe arrhythmias and potentially sudden cardiac death. Traditional and advanced imaging modalities help clarify clinical doubts, allowing essential information about the athlete's physiology and differentiating between primary valve diseases from those secondary to training-related cardiac adaptations. Remarkably, another application of multimodality imaging is evaluating athletes with valve diseases during exercise to reproduce the sport setting and better characterize the etiology and valve defect mechanism. This review aims to analyze the possible causes of atrioventricular valve diseases in athletes, focusing primarily on imaging applications in diagnosis and risk stratification.
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Affiliation(s)
- Andrea Segreti
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Piazza Lauro de Bosis, 00135 Roma, Italy
| | - Mihail Celeski
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
| | - Luigi Maria Monticelli
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
| | - Alfonso Perillo
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
| | - Simone Pasquale Crispino
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
| | - Giuseppe Di Gioia
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Piazza Lauro de Bosis, 00135 Roma, Italy
- Institute of Sports Medicine, Sport and Health, National Italian Olympic Committee, Largo Piero Gabrielli, 00197 Roma, Italy
| | - Valeria Cammalleri
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
| | - Chiara Fossati
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Piazza Lauro de Bosis, 00135 Roma, Italy
| | - Simona Mega
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
| | - Rocco Papalia
- Research Unit of Orthopaedic and Trauma Surgery, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 00128 Roma, Italy
- Research Unit of Orthopaedic and Trauma Surgery, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
| | - Fabio Pigozzi
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Piazza Lauro de Bosis, 00135 Roma, Italy
| | - Gian Paolo Ussia
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
| | - Francesco Grigioni
- Unit of Cardiovascular Science, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 00128 Roma, Italy
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11
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Baikoussis NG, Koumallos N, Aggeli Κ. Mitral valve repair with the use of the "Memo 3D ReChord" ring. J Cardiothorac Surg 2023; 18:151. [PMID: 37069590 PMCID: PMC10111840 DOI: 10.1186/s13019-023-02200-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/31/2023] [Indexed: 04/19/2023] Open
Abstract
BACKGROUND From a variety of ring types, semirigid ring is more preferred for mitral annuloplasty during mitral valve repair particularly in patients whose native mitral saddle shape annulus is well maintained. During mitral annuloplasty artificial chord implantation with the appropriate neochord length is surgically challenging. We present our experience of using the Memo 3D ReChord, a semirigid ring with additional chordal guiding system for mitral valve repair. PATIENTS AND METHODS From September 2018 to February 2020, we successfully treated ten patients with severe (4+/4+) degenerative mitral valve regurgitation due to posterior leaflet prolapse with chordal rupture with the implantation Memo 3D ReChord and neo-chords. RESULTS We implanted from one to three neo-chords and always a ring in our patients. None of the patients had any residual mitral valve regurgitation at the end of the repair and on their discharge evaluated through transesophageal and transthoracic echocardiography respectively. There was no mortality at 30-days or on midterm follow-up. During the 3-month follow-up no regurgitation was noticed either. We included in our study only the patients successfully treated. We also used it in two patients, who underwent valve replacement during the same operation due to mild to moderate mitral valve regurgitation. CONCLUSIONS This, in our knowledge, is the first Greek series of the implantation of the Memo 3D Rechord. The initial excellent results give us the enthusiasm to continue while long-term results and the durability of this technique are necessary to establish this semirigid annuloplastic ring in our every-day practice.
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Affiliation(s)
- Nikolaos G Baikoussis
- Cardiac Surgery Department, Ippokrateio General Hospital of Athens, 114 Vasilissis Sofias Avenue, Athens, 11527, Greece.
| | - Nikolaos Koumallos
- Cardiac Surgery Department, Ippokrateio General Hospital of Athens, 114 Vasilissis Sofias Avenue, Athens, 11527, Greece
| | - Κonstantina Aggeli
- 1st Department of Cardiology, Ippokrateio General Hospital of Athens. Athens University, School of Medicine, Athens, Greece
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12
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Nagata Y, Bertrand PB, Baliyan V, Kochav J, Kagan RD, Ujka K, Alfraidi H, van Kampen A, Morningstar JE, Dal-Bianco JP, Melnitchouk S, Holmvang G, Borger MA, Moore R, Hua L, Sultana R, Calle PV, Yum B, Guerrero JL, Neilan TG, Picard MH, Kim J, Delling FN, Hung J, Norris RA, Weinsaft JW, Levine RA. Abnormal Mechanics Relate to Myocardial Fibrosis and Ventricular Arrhythmias in Patients With Mitral Valve Prolapse. Circ Cardiovasc Imaging 2023; 16:e014963. [PMID: 37071717 PMCID: PMC10108844 DOI: 10.1161/circimaging.122.014963] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 03/08/2023] [Indexed: 04/20/2023]
Abstract
BACKGROUND The relation between ventricular arrhythmia and fibrosis in mitral valve prolapse (MVP) is reported, but underlying valve-induced mechanisms remain unknown. We evaluated the association between abnormal MVP-related mechanics and myocardial fibrosis, and their association with arrhythmia. METHODS We studied 113 patients with MVP with both echocardiogram and gadolinium cardiac magnetic resonance imaging for myocardial fibrosis. Two-dimensional and speckle-tracking echocardiography evaluated mitral regurgitation, superior leaflet and papillary muscle displacement with associated exaggerated basal myocardial systolic curling, and myocardial longitudinal strain. Follow-up assessed arrhythmic events (nonsustained or sustained ventricular tachycardia or ventricular fibrillation). RESULTS Myocardial fibrosis was observed in 43 patients with MVP, predominantly in the basal-midventricular inferior-lateral wall and papillary muscles. Patients with MVP with fibrosis had greater mitral regurgitation, prolapse, and superior papillary muscle displacement with basal curling and more impaired inferior-posterior basal strain than those without fibrosis (P<0.001). An abnormal strain pattern with distinct peaks pre-end-systole and post-end-systole in inferior-lateral wall was frequent in patients with fibrosis (81 versus 26%, P<0.001) but absent in patients without MVP with basal inferior-lateral wall fibrosis (n=20). During median follow-up of 1008 days, 36 of 87 patients with MVP with >6-month follow-up developed ventricular arrhythmias associated (univariable) with fibrosis, greater prolapse, mitral annular disjunction, and double-peak strain. In multivariable analysis, double-peak strain showed incremental risk of arrhythmia over fibrosis. CONCLUSIONS Basal inferior-posterior myocardial fibrosis in MVP is associated with abnormal MVP-related myocardial mechanics, which are potentially associated with ventricular arrhythmia. These associations suggest pathophysiological links between MVP-related mechanical abnormalities and myocardial fibrosis, which also may relate to ventricular arrhythmia and offer potential imaging markers of increased arrhythmic risk.
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Affiliation(s)
- Yasufumi Nagata
- Cardiac Ultrasound Laboratory (Y.N., P.B.B., H.A., J.P.D.-B., L.H., M.H.P., J.H., R.A.L.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Philippe B. Bertrand
- Cardiac Ultrasound Laboratory (Y.N., P.B.B., H.A., J.P.D.-B., L.H., M.H.P., J.H., R.A.L.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Vinit Baliyan
- Department of Radiology (V.B., G.H.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Jonathan Kochav
- Greenberg Cardiology Division, Department of Medicine, Weill Cornell Medical College, New York, NY (J. Kochav, R.D.K., R.S., P.V.C., B.Y., J. Kim, J.W.W.)
| | - Ruth D. Kagan
- Greenberg Cardiology Division, Department of Medicine, Weill Cornell Medical College, New York, NY (J. Kochav, R.D.K., R.S., P.V.C., B.Y., J. Kim, J.W.W.)
| | - Kristian Ujka
- School of Cardiovascular Disease, University of Pisa, Italy (K.U.)
| | - Hassan Alfraidi
- Cardiac Ultrasound Laboratory (Y.N., P.B.B., H.A., J.P.D.-B., L.H., M.H.P., J.H., R.A.L.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Antonia van Kampen
- Cardiac Surgery (A.v.K., S.M.), Massachusetts General Hospital, Harvard Medical School, Boston
- University Department for Cardiac Surgery, Leipzig Heart Center, University of Leipzig, Saxony, Germany (A.v.K., M.A.B.)
| | - Jordan E. Morningstar
- Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston (J.E.M., R.M., R.A.N.)
| | - Jacob P. Dal-Bianco
- Cardiac Ultrasound Laboratory (Y.N., P.B.B., H.A., J.P.D.-B., L.H., M.H.P., J.H., R.A.L.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Serguei Melnitchouk
- Cardiac Surgery (A.v.K., S.M.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Godtfred Holmvang
- Department of Radiology (V.B., G.H.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Michael A. Borger
- University Department for Cardiac Surgery, Leipzig Heart Center, University of Leipzig, Saxony, Germany (A.v.K., M.A.B.)
| | - Reece Moore
- Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston (J.E.M., R.M., R.A.N.)
| | - Lanqi Hua
- Cardiac Ultrasound Laboratory (Y.N., P.B.B., H.A., J.P.D.-B., L.H., M.H.P., J.H., R.A.L.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Razia Sultana
- Greenberg Cardiology Division, Department of Medicine, Weill Cornell Medical College, New York, NY (J. Kochav, R.D.K., R.S., P.V.C., B.Y., J. Kim, J.W.W.)
| | - Pablo Villar Calle
- Greenberg Cardiology Division, Department of Medicine, Weill Cornell Medical College, New York, NY (J. Kochav, R.D.K., R.S., P.V.C., B.Y., J. Kim, J.W.W.)
| | - Brian Yum
- Greenberg Cardiology Division, Department of Medicine, Weill Cornell Medical College, New York, NY (J. Kochav, R.D.K., R.S., P.V.C., B.Y., J. Kim, J.W.W.)
| | - J. Luis Guerrero
- Surgical Cardiovascular Laboratory (J.L.G.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Tomas G. Neilan
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Boston (T.G.N.)
| | - Michael H. Picard
- Cardiac Ultrasound Laboratory (Y.N., P.B.B., H.A., J.P.D.-B., L.H., M.H.P., J.H., R.A.L.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Jiwon Kim
- Greenberg Cardiology Division, Department of Medicine, Weill Cornell Medical College, New York, NY (J. Kochav, R.D.K., R.S., P.V.C., B.Y., J. Kim, J.W.W.)
| | - Francesca N. Delling
- Division of Cardiovascular Medicine, University of California, San Francisco (F.N.D.)
| | - Judy Hung
- Cardiac Ultrasound Laboratory (Y.N., P.B.B., H.A., J.P.D.-B., L.H., M.H.P., J.H., R.A.L.), Massachusetts General Hospital, Harvard Medical School, Boston
| | - Russell A. Norris
- Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston (J.E.M., R.M., R.A.N.)
| | - Jonathan W. Weinsaft
- Greenberg Cardiology Division, Department of Medicine, Weill Cornell Medical College, New York, NY (J. Kochav, R.D.K., R.S., P.V.C., B.Y., J. Kim, J.W.W.)
| | - Robert A. Levine
- Cardiac Ultrasound Laboratory (Y.N., P.B.B., H.A., J.P.D.-B., L.H., M.H.P., J.H., R.A.L.), Massachusetts General Hospital, Harvard Medical School, Boston
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13
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Mantegazza V, Gripari P, Tamborini G, Muratori M, Fusini L, Ghulam Ali S, Garlaschè A, Pepi M. 3D echocardiography in mitral valve prolapse. Front Cardiovasc Med 2023; 9:1050476. [PMID: 36704460 PMCID: PMC9871497 DOI: 10.3389/fcvm.2022.1050476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/20/2022] [Indexed: 01/11/2023] Open
Abstract
Mitral valve prolapse (MVP) is the leading cause of mitral valve surgery. Echocardiography is the principal imaging modality used to diagnose MVP, assess the mitral valve morphology and mitral annulus dynamics, and quantify mitral regurgitation. Three-dimensional (3D) echocardiographic (3DE) imaging represents a consistent innovation in cardiovascular ultrasound in the last decades, and it has been implemented in routine clinical practice for the evaluation of mitral valve diseases. The focus of this review is the role and the advantages of 3DE in the comprehensive evaluation of MVP, intraoperative and intraprocedural monitoring.
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Affiliation(s)
- Valentina Mantegazza
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy,Department of Clinical Sciences and Community Health, Cardiovascular Section, University of Milan, Milan, Italy,*Correspondence: Valentina Mantegazza ✉
| | - Paola Gripari
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Gloria Tamborini
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Manuela Muratori
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Laura Fusini
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy,Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Sarah Ghulam Ali
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Anna Garlaschè
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Mauro Pepi
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
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14
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Characterization of ventricular arrhythmias and sudden cardiac death in subjects with mitral valve prolapse and mitral annular disjunction. Heart Rhythm 2023; 20:112-121. [PMID: 36113769 DOI: 10.1016/j.hrthm.2022.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 02/08/2023]
Abstract
Sudden cardiac death is reported as the leading cause of mortality in developed nations. Arrhythmic mitral valve disease, encompassing mitral valve prolapse and/or mitral annular disjunction, is thought to be responsible in a sizable portion of these deaths. Despite this evidence, there are no reliable methods or clinically useful risk stratification schemes to determine which group of patients are at higher risk or may benefit from interventions such as catheter ablation or prophylactic implantation of a defibrillator. The reasons for this lack of guidance include our incomplete understanding of the mechanisms of ventricular arrhythmias and the fact that mitral valve prolapse and disjunction are frequently diagnosed, yet carry an overall low risk of sudden cardiac death. This heterogeneity makes the development of a reliable prediction model based on the presence of common risk factors very difficult. In this review, we summarize the relevant literature regarding the epidemiology, diagnosis, pathophysiology, and management of mitral valve prolapse and mitral annular disjunction and elucidate their role in sudden cardiac death.
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15
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Delling FN, Noseworthy PA, Adams DH, Basso C, Borger M, Bouatia-Naji N, Elmariah S, Evans F, Gerstenfeld E, Hung J, Tourneau TL, Lewis J, Miller MA, Norris RA, Padala M, Perazzolo-Marra M, Shah DJ, Weinsaft JW, Enriquez-Sarano M, Levine RA. Research Opportunities in the Treatment of Mitral Valve Prolapse: JACC Expert Panel. J Am Coll Cardiol 2022; 80:2331-2347. [PMID: 36480975 PMCID: PMC9981237 DOI: 10.1016/j.jacc.2022.09.044] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/31/2022] [Accepted: 09/12/2022] [Indexed: 12/10/2022]
Abstract
In light of the adverse prognosis related to severe mitral regurgitation, heart failure, or sudden cardiac death in a subset of patients with mitral valve prolapse (MVP), identifying those at higher risk is key. For the first time in decades, researchers have the means to rapidly advance discovery in the field of MVP thanks to state-of-the-art imaging techniques, novel omics methodologies, and the potential for large-scale collaborations using web-based platforms. The National Heart, Lung, and Blood Institute recently initiated a webinar-based workshop to identify contemporary research opportunities in the treatment of MVP. This report summarizes 3 specific areas in the treatment of MVP that were the focus of the workshop: 1) improving management of degenerative mitral regurgitation and associated left ventricular systolic dysfunction; 2) preventing sudden cardiac death in MVP; and 3) understanding the mechanisms and progression of MVP through genetic studies and small and large animal models, with the potential of developing medical therapies.
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Affiliation(s)
- Francesca N. Delling
- Department of Medicine (Cardiovascular Division), University of California-San Francisco, San Francisco, California, USA
| | - Peter A. Noseworthy
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - David H. Adams
- Department of Cardiovascular Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Cristina Basso
- Cardiovascular Pathology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | | | | | - Sammy Elmariah
- Department of Medicine (Cardiovascular Division), University of California-San Francisco, San Francisco, California, USA,Department of Medicine, Cardiology Division, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Frank Evans
- National Heart, Lung, and Blood Institute, Bethesda, Maryland, USA
| | - Edward Gerstenfeld
- Department of Medicine (Cardiovascular Division), University of California-San Francisco, San Francisco, California, USA
| | - Judy Hung
- Department of Medicine, Cardiology Division, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Thierry Le Tourneau
- Nantes Université, CHU Nantes, CNRS, INSERM, l’Institut du Thorax, Nantes, France
| | - John Lewis
- Heart Valve Voice US, Washington, DC, USA
| | - Marc A. Miller
- Helmsley Electrophysiology Center, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Russell A. Norris
- Department of Regenerative Medicine and Cell Biology, Department of Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Muralidhar Padala
- Department of Surgery (Cardiothoracic Surgery Division), Emory University School of Medicine, Atlanta, Georgia, USA
| | | | - Dipan J. Shah
- Department of Cardiology, Houston Methodist, Weill Cornell Medical College, Houston, Texas, USA
| | | | | | - Robert A. Levine
- Massachusetts General Hospital Cardiac Ultrasound Laboratory, Boston, Massachusetts, USA
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16
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Sabbag A, Essayagh B, Barrera JDR, Basso C, Berni A, Cosyns B, Deharo JC, Deneke T, Di Biase L, Enriquez-Sarano M, Donal E, Imai K, Lim HS, Marsan NA, Turagam MK, Peichl P, Po SS, Haugaa KH, Shah D, de Riva Silva M, Bertrand P, Saba M, Dweck M, Townsend SN, Ngarmukos T, Fenelon G, Santangeli P, Sade LE, Corrado D, Lambiase P, Sanders P, Delacrétaz E, Jahangir A, Kaufman ES, Saggu DK, Pierard L, Delgado V, Lancellotti P. EHRA expert consensus statement on arrhythmic mitral valve prolapse and mitral annular disjunction complex in collaboration with the ESC Council on valvular heart disease and the European Association of Cardiovascular Imaging endorsed cby the Heart Rhythm Society, by the Asia Pacific Heart Rhythm Society, and by the Latin American Heart Rhythm Society. Europace 2022; 24:1981-2003. [PMID: 35951656 DOI: 10.1093/europace/euac125] [Citation(s) in RCA: 76] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 12/14/2022] Open
Affiliation(s)
- Avi Sabbag
- The Davidai Center for Rhythm Disturbances and Pacing, Chaim Sheba Medical Center, Tel Hashomer 52621, Israel
| | - Benjamin Essayagh
- Department of Cardiovascular Medicine, Simone Veil Hospital, Cannes 06400, France.,Department of Cardiovascular Medicine, Mayo Clinic, Rochester 55905, Minnesota
| | | | - Cristina Basso
- Dipartimento di Scienze Cardio-Toraco-Vascolari e Sanità Pubblica, Università degli Studi di Padova, Padova 35128, Italy
| | - Ana Berni
- Cardiology and Cardiac Electrophysiology, EP Lab. Hospital Angeles Pedregal. Mexico City 10700, Board member, Mexican Society of Cardiology
| | - Bernard Cosyns
- Cardiology Department, Centrum voor hart en vaatziekten, Universitair Ziekenhuis Brussel, Free University of Brussels, Brussels 1090, Belgium
| | - Jean-Claude Deharo
- Department of Cardiology, L'hôpital de la Timone, Marseille, 13005, France
| | - Thomas Deneke
- Clinic for Interventional Electrophysiology, Heart Center RHÖN-KLINIKUM Campus Bad Neustadt, 97616, Germany
| | - Luigi Di Biase
- Albert Einstein College of Medicine at Montefiore Hospital, New York, NY 10467, USA
| | | | - Erwan Donal
- Service de Cardiologie, CCP-CHU Pontchaillou, Rennes 35033, France
| | - Katsuhiko Imai
- Department of Cardiovascular Surgery, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Hiroshima 737-0023, Japan
| | - Han S Lim
- Department of Cardiology, Austin and Northern Health, University of Melbourne, Melbourne 3010, Australia
| | | | - Mohit K Turagam
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Petr Peichl
- Department of Cardiology, Institute for Clinical and Experimental Medicine (IKEM), Prague 73117, Czech Republic
| | - Sunny S Po
- Heart Rhythm Institute and Section of Cardiovascular Diseases, University of Oklahoma Health Sciences Center, Oklahoma City, OK 0372, USA
| | - Kristina Hermann Haugaa
- ProCardio Center for Innovation, Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Dipen Shah
- Cantonal Hospital, Cardiology Department, CH-1211 Geneva, Switzerland
| | - Marta de Riva Silva
- Department of Cardiology, Leiden University Medical Center, Leiden 2333, The Netherlands
| | - Philippe Bertrand
- Ziekenhuis Oost-Limburg, Hasselt University, Genk, Hasselt 3600, Belgium
| | - Magdi Saba
- Consultant and Reader in Cardiac Electrophysiology, Director, Advanced Ventricular Arrhythmia Training and Research Program, St. George's Hospital NHS Foundation Trust, St. George's, University of London, SW17 0QT, UK
| | - Marc Dweck
- Centre for cardiovascular science, University of Edinburgh, EH16 4TJ, UK
| | - Santiago Nava Townsend
- Instituto Nacional De Cardiologia Ich, Electrophysiology Department, Mexico Df 14080, Mexico
| | - Tachapong Ngarmukos
- Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok 73170, Thailand
| | - Guilherme Fenelon
- Coordenador - Centro de Arritmia, Hospital Israelita Albert Einstein, São Paulo - SP, 05652-900, Brazil
| | | | - Leyla Elif Sade
- University of Pittsburgh, UPMC, Heart and Vascular Institute, ittsburgh, PA 15219, USA.,C.H.U. du Sart-Tilman, Universite de Liege, Liege 4000, Belgium
| | - Domenico Corrado
- Full Professor of Cardiovascular Medicine, Director, Inherited Arrhythmogenic Cardiomyopathies and Sports Cardiology Unit, Dept. of Cardiac, Thoracic and Vascular Sciences, University of Padua Medical School, Padova 35122, Italy
| | - Pier Lambiase
- UCL & Barts Heart Centre, Co-Director of Cardiovascular Research Barts NHS Trust, Inherited Arrhythmia Clinical Lead, UCL MRC DTP Theme Lead, BHRS Committee Research Lead, Institute of Cardiovascular Science, UCL, Department of Cardiology, Barts Heart Centre E1 1BB, UK
| | - Prashanthan Sanders
- Centre for Heart Rhythm Disorders, University of Adelaide, South Australia 5000, Australia
| | - Etienne Delacrétaz
- Clinique Cecil Hirslanden Lausanne & University Hospital Fribourg, Cardiology 1003, Switzerland
| | - Arshad Jahangir
- University of Wisconsin School of Medicine and Public Health, Milwaukee, MI 53705, USA
| | - Elizabeth S Kaufman
- Clinical Electrophysiologist, MetroHealth Medical Center, Professor, Case Western Reserve University 44106, USA
| | - Daljeet Kaur Saggu
- Consultant Cardiologist and Electrophysiologist, AIG HOSPITAL, Hyderabad 500032, India
| | - Luc Pierard
- C.H.U. du Sart-Tilman, Universite de Liege, Liege 4000, Belgium
| | - Victoria Delgado
- Heart Institute, Hospital University Germans Trias i Pujol, Badalona 08916, Spain
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17
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Mitral Annular Disjunction: Associated Pathologies and Clinical Consequences. Curr Cardiol Rep 2022; 24:1933-1944. [PMID: 36331783 DOI: 10.1007/s11886-022-01806-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/10/2022] [Indexed: 11/06/2022]
Abstract
PURPOSE OF REVIEW To provide an overview of mitral annular disjunction (MAD) and to discuss important challenges in diagnosis and management of MAD. RECENT FINDINGS MAD has regained interest in the context of sudden cardiac death (SCD) in patients with mitral valve prolapse (MVP), coined as the "arrhythmic" MVP syndrome. In addition, MAD in isolation was recently suggested to be associated with severe arrhythmia and SCD. There is a lack of consensus on the definition of MAD and the imaging modality to be used for diagnosing MAD, and the therapeutic implications of MAD remain uncertain. Furthermore, the exact mechanism underlying the association of MAD with SCD remains largely unexplored.
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18
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Lasso A, Herz C, Nam H, Cianciulli A, Pieper S, Drouin S, Pinter C, St-Onge S, Vigil C, Ching S, Sunderland K, Fichtinger G, Kikinis R, Jolley MA. SlicerHeart: An open-source computing platform for cardiac image analysis and modeling. Front Cardiovasc Med 2022; 9:886549. [PMID: 36148054 PMCID: PMC9485637 DOI: 10.3389/fcvm.2022.886549] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 08/08/2022] [Indexed: 11/25/2022] Open
Abstract
Cardiovascular disease is a significant cause of morbidity and mortality in the developed world. 3D imaging of the heart's structure is critical to the understanding and treatment of cardiovascular disease. However, open-source tools for image analysis of cardiac images, particularly 3D echocardiographic (3DE) data, are limited. We describe the rationale, development, implementation, and application of SlicerHeart, a cardiac-focused toolkit for image analysis built upon 3D Slicer, an open-source image computing platform. We designed and implemented multiple Python scripted modules within 3D Slicer to import, register, and view 3DE data, including new code to volume render and crop 3DE. In addition, we developed dedicated workflows for the modeling and quantitative analysis of multi-modality image-derived heart models, including heart valves. Finally, we created and integrated new functionality to facilitate the planning of cardiac interventions and surgery. We demonstrate application of SlicerHeart to a diverse range of cardiovascular modeling and simulation including volume rendering of 3DE images, mitral valve modeling, transcatheter device modeling, and planning of complex surgical intervention such as cardiac baffle creation. SlicerHeart is an evolving open-source image processing platform based on 3D Slicer initiated to support the investigation and treatment of congenital heart disease. The technology in SlicerHeart provides a robust foundation for 3D image-based investigation in cardiovascular medicine.
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Affiliation(s)
- Andras Lasso
- Laboratory for Percutaneous Surgery, School of Computing, Queen's University, Kingston, ON, Canada
| | - Christian Herz
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Hannah Nam
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Alana Cianciulli
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | | | - Simon Drouin
- Software and Information Technology Engineering, École de Technologie Supérieure, Montreal, QC, Canada
| | | | - Samuelle St-Onge
- Software and Information Technology Engineering, École de Technologie Supérieure, Montreal, QC, Canada
| | - Chad Vigil
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Stephen Ching
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Kyle Sunderland
- Laboratory for Percutaneous Surgery, School of Computing, Queen's University, Kingston, ON, Canada
| | - Gabor Fichtinger
- Laboratory for Percutaneous Surgery, School of Computing, Queen's University, Kingston, ON, Canada
| | - Ron Kikinis
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Matthew A. Jolley
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, United States,Division of Cardiology, Children's Hospital of Philadelphia, Philadelphia, PA, United States,*Correspondence: Matthew A. Jolley
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Nam HH, Herz C, Lasso A, Cianciulli A, Flynn M, Huang J, Wang Z, Paniagua B, Vicory J, Kabir S, Simpson J, Harrild D, Marx G, Cohen MS, Glatz AC, Jolley MA. Visualization and Quantification of the Unrepaired Complete Atrioventricular Canal Valve Using Open-Source Software. J Am Soc Echocardiogr 2022; 35:985-996.e11. [PMID: 35537615 PMCID: PMC9452462 DOI: 10.1016/j.echo.2022.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 04/20/2022] [Accepted: 04/24/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Repair of complete atrioventricular canal (CAVC) is often complicated by residual left atrioventricular valve regurgitation. The structure of the mitral and tricuspid valves in biventricular hearts has previously been shown to be associated with valve dysfunction. However, the three-dimensional (3D) structure of the entire unrepaired CAVC valve has not been quantified. Understanding the 3D structure of the CAVC may inform optimized repair. METHODS Novel open-source work flows were created in SlicerHeart for the modeling and quantification of CAVC valves on the basis of 3D echocardiographic images. These methods were applied to model the annulus, leaflets, and papillary muscle (PM) structure of 35 patients (29 with trisomy 21) with CAVC using transthoracic 3D echocardiography. The mean leaflet and annular shapes were calculated and visualized using shape analysis. Metrics of the complete native CAVC valve structure were compared with those of normal mitral valves using the Mann-Whitney U test. Associations between CAVC structure and atrioventricular valve regurgitation were analyzed. RESULTS CAVC leaflet metrics varied throughout systole. Compared with normal mitral valves, the left CAVC PMs were more acutely angled in relation to the annular plane (P < .001). In addition, the anterolateral PM was laterally and inferiorly rotated in CAVC, while the posteromedial PM was more superiorly and laterally rotated, relative to normal mitral valves (P < .001). Lower native CAVC atrioventricular valve annular height and annular height-to-valve width ratio before repair were both associated with moderate or greater left atrioventricular valve regurgitation after repair (P < .01). CONCLUSIONS It is feasible to model and quantify 3D CAVC structure using 3D echocardiographic images. The results demonstrate significant variation in CAVC structure across the cohort and differences in annular, leaflet, and PM structure compared with the mitral valve. These tools may be used in future studies to catalyze future research intended to identify structural associations of valve dysfunction and to optimize repair in this vulnerable and complex population.
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Affiliation(s)
- Hannah H Nam
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Christian Herz
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Andras Lasso
- Laboratory for Percutaneous Surgery, Queen's University, Kingston, Ontario, Canada
| | - Alana Cianciulli
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Maura Flynn
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Jing Huang
- Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Zi Wang
- Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania
| | | | | | - Saleha Kabir
- Department of Congenital Heart Disease, Evelina London Children's Hospital, London, United Kingdom
| | - John Simpson
- Department of Congenital Heart Disease, Evelina London Children's Hospital, London, United Kingdom
| | - David Harrild
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts
| | - Gerald Marx
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts
| | - Meryl S Cohen
- Division of Pediatric Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Andrew C Glatz
- Division of Pediatric Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Center for Pediatric Clinical Effectiveness, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Matthew A Jolley
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Division of Pediatric Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
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Vriz O, Eltayeb A, Landi I, Anwar K, Alenazy A, Hiristova K, Kasprzak J, D'Andrea A, Amro B, Limongelli G, Bossone E, Imazio M. Transthoracic echocardiography for arrhythmic mitral valve prolapse: Phenotypic characterization as first step. Echocardiography 2022; 39:1158-1170. [PMID: 36029124 DOI: 10.1111/echo.15439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/09/2022] [Accepted: 08/09/2022] [Indexed: 11/30/2022] Open
Abstract
Mitral valve prolapse (MVP) is the most frequent valvulopathy with a prevalence of 1.2%-2.4% in general population and it is characterized by a benign course. Although it can be associated with some complications, ventricular arrhythmias (VA) and sudden cardiac death (SCD) as ultimate expressions, are the most worrying. The estimated risk of SCD in MVP is between 0.2% and 1.9% per year including both MVP patients with left ventricular (LV) dysfunction due to severe MR and MVP patients without significant MR. The latter ones constitute a particular phenotype called "malignant MVP" characterized by bileaflet myxomatous prolapse, ECG repolarization abnormalities and complex VAs (c-VAs) with polymorphic/right bundle branch block morphology (RBBB) and LV fibrosis of the papillary muscles (PMs) and inferobasal wall secondary to mechanical stretching visualized as late gadolinium enhancement (LGE) areas by cardiac magnetic resonance (CMR). In MVP, the first diagnostic approach is transthoracic echocardiography (TTE) that defines the presence of mitral annular disjunction (MAD) which seems to be associated with "arrhythmic MVP" (AMVP). From an ECG point of view, AMVP is characterized by frequent premature ventricular contractions (PVCs) arising from one or both PMs, fascicular tissue, and outflow tract, as well as by T-wave inversion in the inferolateral leads. The aim of the present paper is to describe TTE red flags that could identify MVP patients at high risk to develop complex arrhythmias as supported by the corresponding findings of LGE-CMR and anatomy studies. TTE could be a co-partner in phenotyping high-risk arrhythmic MVP patients.
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Affiliation(s)
- Olga Vriz
- Heart Centre, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | - Abdulla Eltayeb
- Heart Centre, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | - Irene Landi
- Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy
| | - Kashif Anwar
- Heart Centre, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | - Ali Alenazy
- Heart Centre, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | - Krassimira Hiristova
- Department of Noninvasive Diagnostic Imaging, National Heart Hospital, Sofia, Bulgaria
| | - Jarek Kasprzak
- Cardiology, Bieganski Hospital, Medical University, Lodz, Poland
| | - Antonello D'Andrea
- Department of Cardiology, Umberto I Hospital, Luigi Vanvitelli University - Nocera Inferiore (ASL Salerno), Caserta, Italy
| | - Bandar Amro
- Heart Centre, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | - Giuseppe Limongelli
- Inherited and Rare Cardiovascular Disease Unit, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", AORN dei Colli, Monaldi Hospital, Naples, Italy
| | - Eduardo Bossone
- Azienda Ospedaliera di Rilevanza Nazionale "A. Cardarelli" Hospital, Naples, Italy
| | - Massimo Imazio
- Department of Cardiology, University Hospital Santa Maria della Misericordia, Udine, Italy
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21
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Wu S, Siegel RJ. Mitral annular disjunction: A case series and review of the literature. Front Cardiovasc Med 2022; 9:976066. [PMID: 36035903 PMCID: PMC9411994 DOI: 10.3389/fcvm.2022.976066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 07/25/2022] [Indexed: 11/15/2022] Open
Abstract
Mitral annular disjunction (MAD) is an abnormal displacement of the mitral valve leaflet onto the left atrial wall and is commonly found in patients with mitral valve prolapse (MVP). The diagnosis is usually made by transthoracic echocardiography (TTE) although findings can be subtle and further cardiac imaging may be necessary. MAD has been associated with a risk of malignant ventricular arrhythmias and sudden cardiac death, therefore recognition of this diagnosis and risk stratification are highly important. In this review, we will discuss the diagnosis, clinical implications, risk stratification and management of MAD based upon currently available literature, as well as provide a series of cases showing the heterogeneity in presentation and our experience with management of this rare but potentially fatal entity.
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22
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Dumont KA, Dahl Aguilera HM, Persson R, Prot V, Escobar Kvitting JP, Urheim S. Mitral Annular Elasticity Determines Severity of Regurgitation in Barlow's Disease. J Am Soc Echocardiogr 2022; 35:1037-1046. [PMID: 35842077 DOI: 10.1016/j.echo.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 11/24/2022]
Abstract
AIMS Barlow's disease (BD) with late systolic mitral regurgitation provides diagnostic and therapeutic challenges. The mechanisms of the regurgitation are still unclear. We hypothesized that the onset and the severity of late systolic regurgitation are determined by annulus dynamics and the mechanical stresses imposed by the left ventricle. METHODS AND RESULTS Ten patients with BD and mitral annulus disjunction (MAD) were compared with ten healthy controls. Resting blood pressure (BP) was measured and transthoracic three-dimensional (3D) echocardiography was analyzed using a holographic display that allows tracking and measurements of mitral annulus surface area (ASA) throughout the cardiac cycle. A novel annulus elastance index (dASA/dP) was calculated between aortic valve opening and onset of mitral regurgitation. Severity of MAD was quantified as the disjunction index (mm*degree). Leaflet coaptation area was calculated using a finite element model. Peak systolic ASA in controls and patients were 9.3±0.6 and 21.1±3.1 cm2, respectively (p<0.001). In patients ASA increased rapidly during LV ejection and onset of mitral regurgitation coincided closely with peak upslope of annulus area change (dASA/dt). The finite element model showed a close association between rapid annulus displacement and coaptation area deficit in BD. Systolic annulus elastance index (0.058±0.036 cm2/mmHg) correlated strongly with disjunction index (r=0.91, p<0.0001). Moreover, regurgitation volume showed a positive correlation with systolic BP (r=0.80, p<0.01) CONCLUSION: The present pilot study supports the hypothesis that annulus dilatation may accentuate mitral valve regurgitation in patients with Barlow's disease. A novel annulus elastance index may predict the severity of mitral valve regurgitation in selected patients.
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Affiliation(s)
- Karl-Andreas Dumont
- Department of Cardiothoracic Surgery, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
| | - Hans Martin Dahl Aguilera
- Department of Structural Engineering, Faculty of Engineering Science, The Norwegian University of Science and Technology, Trondheim, Norway.
| | - Robert Persson
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway.
| | - Victorien Prot
- Department of Structural Engineering, Faculty of Engineering Science, The Norwegian University of Science and Technology, Trondheim, Norway.
| | | | - Stig Urheim
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway.
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Ortiz-Leon XA, Fritche-Salazar JF, Posada-Martinez EL, Rodriguez-Zanella H, Venegas-Roman AG, Ruiz Esparza-Dueñas ME, Sugeng L, Arias-Godinez JA. Mitral valve prolapse in patients with atrial septal defect: A quantitative three-dimensional echocardiographic analysis. Echocardiography 2022; 39:827-836. [PMID: 35607253 DOI: 10.1111/echo.15371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/20/2022] [Accepted: 05/10/2022] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION AND OBJECTIVES Mitral valve (MV) prolapse is highly prevalent in patients with atrial septal defect (ASD). Abnormal left ventricular geometry has been proposed as the main mechanism of MV prolapse in ASD, however, the changes in the morphology of the MV apparatus remain to be clarified. Our aim was to assess the MV geometry in patients with ASD and MV prolapse. METHODS We evaluated 99 patients (73% female, median age 40 years) with ASD who underwent a three-dimensional transesophageal echocardiogram. Three-dimensional analysis of the MV was done using dedicated automated software. Transthoracic echocardiographic parameters were assessed post ASD closure in 28 patients. RESULTS MV prolapse was found in 39% of patients. Although smaller left ventricular dimensions and greater interatrial shunt were found in patients with MV prolapse compared with those without prolapse, there was no difference in the subvalvular parameters. MV prolapse was associated with larger mitral anterior-posterior diameter, anterolateral-posteromedial diameter, anterior perimeter, posterior perimeter, total perimeter, and anterior leaflet area (all p < 0.05). Mitral regurgitation was more frequent in patients with MV prolapse (80 vs. 48%, p = 0.002). CONCLUSIONS In patients with ASD, the main mechanism of MV prolapse is the presence of an organic primary process of the MV apparatus (excessive anterior mitral leaflet tissue and mitral annular enlargement).
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Affiliation(s)
- Xochitl A Ortiz-Leon
- Laboratory of Echocardiography, National Institute of Cardiology, Mexico City, Mexico
| | | | | | | | | | | | - Lissa Sugeng
- Department of Cardiology, North Shore University Hospital, Manhasset, New York, USA
| | - Jose A Arias-Godinez
- Laboratory of Echocardiography, National Institute of Cardiology, Mexico City, Mexico
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Fan Y, Chan JSK, Lee APW. Advances in Procedural Echocardiographic Imaging in Transcatheter Edge-to-Edge Repair for Mitral Regurgitation. Front Cardiovasc Med 2022; 9:864341. [PMID: 35419432 PMCID: PMC8996060 DOI: 10.3389/fcvm.2022.864341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/07/2022] [Indexed: 11/15/2022] Open
Abstract
Transcatheter edge-to-edge repair (TEER) therapy is recommended by the American College of Cardiology/American Heart Association (ACC/AHA) guidelines for selected patients with symptomatic severe or moderate-severe mitral regurgitation (MR). Echocardiography, in particular transesophageal echocardiography (TEE), plays a critical role in procedural planning and guidance for TEER. Recent innovations and advances in TEE techniques including three-dimensional (3D) imaging, unlimited x-plane imaging, live 3D multiplanar reconstruction, as well as transillumination imaging with color Doppler and transparency rendering have further enhanced procedural imaging for TEER, especially for complex diseases including commissural defects, clefts, and multi-segment pathologies. This review discusses the technology of these advanced procedural imaging techniques and provides a “step-by-step” guide on how to apply them during the TEER procedure with a focus on their added values in treatment of complex valve lesions.
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Affiliation(s)
- Yiting Fan
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
- Laboratory of Cardiac Imaging and 3D Printing, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Jeffrey Shi Kai Chan
- Laboratory of Cardiac Imaging and 3D Printing, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Alex Pui-Wai Lee
- Laboratory of Cardiac Imaging and 3D Printing, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
- *Correspondence: Alex Pui-Wai Lee
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25
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Nam HH, Dinh PV, Lasso A, Herz C, Huang J, Posada A, Aly AH, Pouch AM, Kabir S, Simpson J, Glatz AC, Harrild DM, Marx G, Fichtinger G, Cohen MS, Jolley MA. Dynamic Annular Modeling of the Unrepaired Complete Atrioventricular Canal Annulus. Ann Thorac Surg 2022; 113:654-662. [PMID: 33359720 PMCID: PMC8219815 DOI: 10.1016/j.athoracsur.2020.12.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 12/03/2020] [Accepted: 12/09/2020] [Indexed: 02/03/2023]
Abstract
BACKGROUND Repair of complete atrioventricular canal (CAVC) is often complicated by atrioventricular valve regurgitation, particularly of the left-sided valve. Understanding the 3-dimensional (3D) structure of the atrioventricular canal annulus before repair may help to inform optimized repair. However, the 3D shape and movement of the CAVC annulus has been neither quantified nor rigorously compared with a normal mitral valve annulus. METHODS The complete annuli of 43 patients with CAVC were modeled in 4 cardiac phases using transthoracic 3D echocardiograms and custom code. The annular structure was compared with the annuli of 20 normal pediatric mitral valves using 3D metrics and statistical shape analysis (Procrustes analysis). RESULTS The unrepaired CAVC annulus varied in shape significantly throughout the cardiac cycle. Procrustes analysis visually demonstrated that the average normalized CAVC annular shape is more planar than the normal mitral annulus. Quantitatively, the annular height-to-valve width ratio of the native left CAVC atrioventricular valve was significantly lower than that of a normal mitral valve in all systolic phases (P < .001). CONCLUSIONS The left half of the CAVC annulus is more planar than that of a normal mitral valve with an annular height-to-valve width ratio similar to dysfunctional mitral valves. Given the known importance of annular shape to mitral valve function, further exploration of the association of 3D structure to valve function in CAVC is warranted.
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Affiliation(s)
- Hannah H Nam
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Patrick V Dinh
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Andras Lasso
- Laboratory for Percutaneous Surgery, Queen's University, Kingston, Ontario, Canada
| | - Christian Herz
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Jing Huang
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania; Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Adriana Posada
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Ahmed H Aly
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Alison M Pouch
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Saleha Kabir
- Department of Congenital Heart Disease, Evelina London Children's Hospital, London, United Kingdom
| | - John Simpson
- Department of Congenital Heart Disease, Evelina London Children's Hospital, London, United Kingdom
| | - Andrew C Glatz
- Division of Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - David M Harrild
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts
| | - Gerald Marx
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts
| | - Gabor Fichtinger
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Meryl S Cohen
- Division of Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Matthew A Jolley
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Division of Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
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Kato Y, Okada A, Amaki M, Nishimura K, Kanzaki H, Kataoka Y, Miyamoto K, Hamatani Y, Amano M, Takahama H, Hasegawa T, Kusano K, Fujita T, Kobayashi J, Yasuda S, Izumi C. Three-dimensional echocardiography for predicting mitral stenosis after MitraClip for functional mitral regurgitation. J Echocardiogr 2022; 20:151-158. [PMID: 35084686 DOI: 10.1007/s12574-022-00564-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/25/2021] [Accepted: 01/09/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Postprocedural mitral stenosis (MS), or increased transmitral mean pressure gradient (TMPG), is one of the limitations of transcatheter edge-to-edge mitral valve repair using MitraClip (Abbott Vascular Inc., Santa Clara, USA); however, the usefulness of three-dimensional transesophageal echocardiography (3D-TEE) for predicting postprocedural MS in functional mitral regurgitation (MR) has not been fully elucidated. METHODS Eighty-two consecutive functional MR patients who underwent transcatheter mitral valve repair using MitraClip were retrospectively studied. Postprocedural MS was defined as TMPG ≥ 5 mmHg by echocardiography. RESULTS Ten patients had postprocedural MS, and 3D-TEE showed that patients with postprocedural MS had smaller preprocedural mitral valve orifice area (MVOA), anteroposterior and mediolateral diameter, leaflet area, and annulus area. Receiver operating characteristic analysis showed that leaflet area (area under the curve (AUC) 0.829), annulus area (AUC 0.813), anteroposterior diameter (AUC 0.797) and mediolateral diameter (AUC 0.803) evaluated using 3D-TEE were predictors of postprocedural MS, and their predictive abilities were higher than those of preprocedural MVOA (AUC 0.756) and preprocedural TMPG (AUC 0.716). Adding leaflet area to TMPG and MVOA resulted in higher C-statistics for predicting postprocedural MS (from 0.716 to 0.845 and from 0.756 to 0.853, respectively). CONCLUSIONS In functional MR patients treated with MitraClip, leaflet area and annulus area evaluated using 3D-TEE had high predictive values for postprocedural MS, and their predictive abilities were higher than those of preprocedural TMPG or MVOA.
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Affiliation(s)
- Yuta Kato
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Atsushi Okada
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan.
| | - Makoto Amaki
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Kunihiro Nishimura
- Department of Preventive Medicine and Epidemiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Hideaki Kanzaki
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Yu Kataoka
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Koji Miyamoto
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Yasuhiro Hamatani
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Masashi Amano
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Hiroyuki Takahama
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Takuya Hasegawa
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Kengo Kusano
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Tomoyuki Fujita
- Department of Cardiovascular Surgery, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Junjiro Kobayashi
- Department of Cardiovascular Surgery, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Satoshi Yasuda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Chisato Izumi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
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Yang Y, Wang H, Song H, Hu Y, Gong Q, Xiong Y, Liu J, Ren W, Zhou Q. Morphological Evaluation of Mitral Valve Based on Three-dimensional Printing Models: Potential Implication for Mitral Valve Repair. BIO INTEGRATION 2021. [DOI: 10.15212/bioi-2021-0017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Abstract Objective: This study aimed to analyze the morphological characteristics of rheumatic (RMVD) and degenerative mitral valve diseases (DMVD) based on three-dimensional (3D) printing model before and after surgery and to explore the potential implication of the
3D printing model for mitral valve (MV) repair.Methods: 3D transesophageal echocardiography (TEE) data of the MV were acquired in 45 subjects (15 with RMVD, 15 with DMVD, and 15 with normal MV anatomy). 3D printing models of the MV were constructed by creating molds to be printed
with water-soluble polyvinyl alcohol, then filled with room temperature vulcanizing silicone. The parameters of the annulus and leaflet of the MV were acquired and analyzed using the 3D printing model. Mitral valve repair was simulated on 3D printing models of 10 subjects and compared with
the actual operation performed on patients. The effects of surgery were assessed by evaluating the changes in coaptation length (CL) and the annular height to commissural width ratio (AHCWR) before and after MV repairs. The correlations of the grade of mitral regurgitation with CL and AHCWR
were analyzed.Results: 3D silicone MV models were all successfully constructed based on 3D TEE data. Compared with the normal groups, the mitral annulus size in the RMVD groups showed no significant differences. In contrast, mitral annulus in DMVD groups was dilated and flattened
with diameters of anteroposterior, anterolateral-posteromedial, commissural width, annular circumferences, and area increased. Mitral repair was successfully simulated on 10 models with significant increase in leaflet coaptation area both in vivo and in vitro. Good agreement was observed in
CL and AHCWR after surgery in the 3D printing model compared with real surgery on the patient valve. The grade of mitral regurgitation correlated inversely with CL (r = ‐0.87, P < 0.01) and AHCWR (r = ‐0.79, P < 0.01). Mitral valve repair was performed twice
in one model to assess which provided a better outcome.Conclusions: 3D printing models of the MV based on 3D TEE data could be used in morphological analysis of the MV before and after surgery in RMVD and DMVD. Surgery simulation on 3D printing models could provide valuable information
concerning morphological changes after surgery, with are closely associated with clinical outcomes.
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Affiliation(s)
- Yuanting Yang
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Hao Wang
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Hongning Song
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Yugang Hu
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Qincheng Gong
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Ye Xiong
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Junbi Liu
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Wei Ren
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Qing Zhou
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Herz C, Pace DF, Nam HH, Lasso A, Dinh P, Flynn M, Cianciulli A, Golland P, Jolley MA. Segmentation of Tricuspid Valve Leaflets From Transthoracic 3D Echocardiograms of Children With Hypoplastic Left Heart Syndrome Using Deep Learning. Front Cardiovasc Med 2021; 8:735587. [PMID: 34957233 PMCID: PMC8696083 DOI: 10.3389/fcvm.2021.735587] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Hypoplastic left heart syndrome (HLHS) is a severe congenital heart defect in which the right ventricle and associated tricuspid valve (TV) alone support the circulation. TV failure is thus associated with heart failure, and the outcome of TV valve repair are currently poor. 3D echocardiography (3DE) can generate high-quality images of the valve, but segmentation is necessary for precise modeling and quantification. There is currently no robust methodology for rapid TV segmentation, limiting the clinical application of these technologies to this challenging population. We utilized a Fully Convolutional Network (FCN) to segment tricuspid valves from transthoracic 3DE. We trained on 133 3DE image-segmentation pairs and validated on 28 images. We then assessed the effect of varying inputs to the FCN using Mean Boundary Distance (MBD) and Dice Similarity Coefficient (DSC). The FCN with the input of an annular curve achieved a median DSC of 0.86 [IQR: 0.81-0.88] and MBD of 0.35 [0.23-0.4] mm for the merged segmentation and an average DSC of 0.77 [0.73-0.81] and MBD of 0.6 [0.44-0.74] mm for individual TV leaflet segmentation. The addition of commissural landmarks improved individual leaflet segmentation accuracy to an MBD of 0.38 [0.3-0.46] mm. FCN-based segmentation of the tricuspid valve from transthoracic 3DE is feasible and accurate. The addition of an annular curve and commissural landmarks improved the quality of the segmentations with MBD and DSC within the range of human inter-user variability. Fast and accurate FCN-based segmentation of the tricuspid valve in HLHS may enable rapid modeling and quantification, which in the future may inform surgical planning. We are now working to deploy this network for public use.
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Affiliation(s)
- Christian Herz
- Children's Hospital of Philadelphia, Department of Anesthesia and Critical Care Medicine, Philadelphia, PA, United States
| | - Danielle F. Pace
- Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA, United States
- Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Hannah H. Nam
- Children's Hospital of Philadelphia, Department of Anesthesia and Critical Care Medicine, Philadelphia, PA, United States
| | - Andras Lasso
- Laboratory for Percutaneous Surgery, Queen's University, Kingston, ON, Canada
| | - Patrick Dinh
- Children's Hospital of Philadelphia, Department of Anesthesia and Critical Care Medicine, Philadelphia, PA, United States
| | - Maura Flynn
- Children's Hospital of Philadelphia, Department of Anesthesia and Critical Care Medicine, Philadelphia, PA, United States
| | - Alana Cianciulli
- Children's Hospital of Philadelphia, Department of Anesthesia and Critical Care Medicine, Philadelphia, PA, United States
| | - Polina Golland
- Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Matthew A. Jolley
- Children's Hospital of Philadelphia, Department of Anesthesia and Critical Care Medicine, Philadelphia, PA, United States
- Division of Pediatric Cardiology, Children's Hospital of Philadelphia, Philadelphia, PA, United States
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29
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Qureshi NQ, Sharkey A, Mufarrih SH, Baribeau V, Quraishi I, Bose R, Matyal R, Khabbaz KR, Mahmood F. Dynamic Geometric Tricuspid Valve Assessment: Extending from Bench to Bedside. J Cardiothorac Vasc Anesth 2021; 36:3244-3249. [PMID: 34969563 DOI: 10.1053/j.jvca.2021.11.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/22/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Nada Qaisar Qureshi
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Aidan Sharkey
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Syed Hamza Mufarrih
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Vincent Baribeau
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Ibrahim Quraishi
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Ruma Bose
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Robina Matyal
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Kamal R Khabbaz
- Division of Cardiac Surgery, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Feroze Mahmood
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
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30
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Mihara K, Kanemoto I, Sato K, Yasuhira Y, Watanabe I, Misumi K. Echocardiographic evaluation of deformity and enlargement of the canine mitral valve annulus associated with myxomatous degenerative mitral valve disease. J Vet Cardiol 2021; 37:8-17. [PMID: 34507141 DOI: 10.1016/j.jvc.2021.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 07/24/2021] [Accepted: 08/09/2021] [Indexed: 12/15/2022]
Abstract
INTRODUCTION/OBJECTIVES Quantitative evaluation of the morphology of the mitral valve annulus (MVA) in dogs with myxomatous mitral valve disease (MMVD) may improve the techniques of mitral valve plasty. This study aimed to compare the MVA morphology on echocardiography in normal dogs and dogs with MMVD and to compare the echocardiographic and intraoperative measurements of the MVA in dogs with MMVD. ANIMALS, MATERIALS AND METHODS The study population comprised 59 healthy dogs (control group) and 371 dogs with MMVD (MMVD group). The anterior-posterior diameter and transversal diameter (TD) of the MVA and the aortic annulus diameter were measured by echocardiography to calculate the mitral valve flattening ratio, mitral annulus area (MAA), mitral annulus circumference (MAC), contraction ratio of the MAA and aortic annulus area. In the MMVD group, the mitral annulus diameter (MAD) was macroscopically measured during mitral valve plasty. Areas and lengths were divided by the body surface area (BSA) and √BSA, respectively, for comparative analyses. RESULTS The systolic and diastolic anterior-posterior diameter/√BSA, transversal diameter/√BSA, MAA/BSA converted to a natural logarithm (Ln(MAA/BSA)), and MAC/√BSA was significantly higher in the MMVD group than the control group, whereas flattening ratio values and contraction ratio of the MAA was significantly lower. Neither the aortic annulus diameter /√BSA nor the Ln(aortic annulus area/BSA) significantly differed between groups. In the MMVD group, diastolic MAC/√BSA and MAA/BSA correlated significantly with the MAD/√BSA. CONCLUSIONS The MVA is larger and rounder in dogs with MMVD than controls. Two-dimensional echocardiographic measures of MAA and MAC correlate well with intraoperative measures of MAD.
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Affiliation(s)
- K Mihara
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 8900065, Japan; Chayagasaka Animal Hospital, 1-1-5 Shin-nishi, Chikusa-ku, Nagoya, 4640003, Japan.
| | - I Kanemoto
- Chayagasaka Animal Hospital, 1-1-5 Shin-nishi, Chikusa-ku, Nagoya, 4640003, Japan
| | - K Sato
- Chayagasaka Animal Hospital, 1-1-5 Shin-nishi, Chikusa-ku, Nagoya, 4640003, Japan
| | - Y Yasuhira
- Chayagasaka Animal Hospital, 1-1-5 Shin-nishi, Chikusa-ku, Nagoya, 4640003, Japan
| | - I Watanabe
- Chayagasaka Animal Hospital, 1-1-5 Shin-nishi, Chikusa-ku, Nagoya, 4640003, Japan
| | - K Misumi
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 8900065, Japan
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31
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Harada Y, Utsunomiya H, Susawa H, Takahari K, Takemoto H, Ueda Y, Izumi K, Itakura K, Hidaka T, Nakano Y. Determinants of Exercise-Induced Mitral Regurgitation Using Three-Dimensional Transesophageal Echocardiography Combined With Isometric Handgrip Exercise. Am J Cardiol 2021; 151:78-85. [PMID: 34049673 DOI: 10.1016/j.amjcard.2021.04.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 04/07/2021] [Accepted: 04/13/2021] [Indexed: 11/29/2022]
Abstract
Using three-dimensional (3D) transesophageal echocardiography (TEE) and isometric handgrip exercise (IHE), we investigated the determinants of exercise-induced mitral regurgitation (MR) according to MR etiologies. Seventy-six patients with more than moderate MR, 40 patients with functional MR (FMR) and 36 patients with degenerative MR (DMR), underwent 3D TEE combined with IHE. Mitral valve (MV) geometry and 3D vena contracta area (3D VCA) were simultaneously evaluated at baseline and during IHE. With regard to exercise-induced MR, Δ3D VCA was calculated as the difference between 3D VCA at baseline and 3D VCA during IHE. IHE caused different changes in MV geometry between etiologies and led to exacerbation of 3D VCA at baseline. Larger Δ3D VCA was observed in the FMR group compared with the DMR group (15.9 ± 10.3 mm2 versus 7.3 ± 4.2 mm2; p < 0.0001). In multivariate analyses, tenting height and 3D VCA were selected as independent factors associated with Δ3D VCA in the FMR group (p = 0.0135 and p = 0.0201, respectively), while flail width was selected as an independent factor associated with Δ3D VCA in the DMR group (p = 0.0066). In conclusion, IHE alters mitral valve geometry and causes exacerbation of MR regardless of MR etiology and the determinants of exercise-induced MR differed between MR etiologies.
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Affiliation(s)
- Yu Harada
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Hiroto Utsunomiya
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
| | - Hitoshi Susawa
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Kosuke Takahari
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Hajime Takemoto
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Yusuke Ueda
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Kanako Izumi
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Kiho Itakura
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Takayuki Hidaka
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Yukiko Nakano
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
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32
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Morningstar JE, Nieman A, Wang C, Beck T, Harvey A, Norris RA. Mitral Valve Prolapse and Its Motley Crew-Syndromic Prevalence, Pathophysiology, and Progression of a Common Heart Condition. J Am Heart Assoc 2021; 10:e020919. [PMID: 34155898 PMCID: PMC8403286 DOI: 10.1161/jaha.121.020919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/21/2021] [Indexed: 01/01/2023]
Abstract
Mitral valve prolapse (MVP) is a commonly occurring heart condition defined by enlargement and superior displacement of the mitral valve leaflet(s) during systole. Although commonly seen as a standalone disorder, MVP has also been described in case reports and small studies of patients with various genetic syndromes. In this review, we analyzed the prevalence of MVP within syndromes where an association to MVP has previously been reported. We further discussed the shared biological pathways that cause MVP in these syndromes, as well as how MVP in turn causes a diverse array of cardiac and noncardiac complications. We found 105 studies that identified patients with mitral valve anomalies within 18 different genetic, developmental, and connective tissue diseases. We show that some disorders previously believed to have an increased prevalence of MVP, including osteogenesis imperfecta, fragile X syndrome, Down syndrome, and Pseudoxanthoma elasticum, have few to no studies that use up-to-date diagnostic criteria for the disease and therefore may be overestimating the prevalence of MVP within the syndrome. Additionally, we highlight that in contrast to early studies describing MVP as a benign entity, the clinical course experienced by patients can be heterogeneous and may cause significant cardiovascular morbidity and mortality. Currently only surgical correction of MVP is curative, but it is reserved for severe cases in which irreversible complications of MVP may already be established; therefore, a review of clinical guidelines to allow for earlier surgical intervention may be warranted to lower cardiovascular risk in patients with MVP.
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Affiliation(s)
- Jordan E. Morningstar
- Department of Regenerative Medicine and Cell BiologyMedical University of South CarolinaCharlestonSC
| | - Annah Nieman
- Department of Regenerative Medicine and Cell BiologyMedical University of South CarolinaCharlestonSC
| | - Christina Wang
- Department of Regenerative Medicine and Cell BiologyMedical University of South CarolinaCharlestonSC
| | - Tyler Beck
- Department of Regenerative Medicine and Cell BiologyMedical University of South CarolinaCharlestonSC
| | - Andrew Harvey
- Department of Regenerative Medicine and Cell BiologyMedical University of South CarolinaCharlestonSC
| | - Russell A. Norris
- Department of Regenerative Medicine and Cell BiologyMedical University of South CarolinaCharlestonSC
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33
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de Oliveira DC, Espino DM, Deorsola L, Mynard JP, Rajagopal V, Buchan K, Dawson D, Shepherd DET. A toolbox for generating scalable mitral valve morphometric models. Comput Biol Med 2021; 135:104628. [PMID: 34246162 DOI: 10.1016/j.compbiomed.2021.104628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 06/25/2021] [Accepted: 07/02/2021] [Indexed: 11/26/2022]
Abstract
The mitral valve is a complex anatomical structure, whose shape is key to several traits of its function and disease, being crucial for the success of surgical repair and implantation of medical devices. The aim of this study was to develop a parametric, scalable, and clinically useful model of the mitral valve, enabling the biomechanical evaluation of mitral repair techniques through finite element simulations. MATLAB was used to parameterize the valve: the annular boundary was sampled from a porcine mitral valve mesh model and landmark points and relevant boundaries were selected for the parameterization of leaflets using polynomial fitting. Several geometric parameters describing the annulus, leaflet shape and papillary muscle position were implemented and used to scale the model according to patient dimensions. The developed model, available as a toolbox, allows for the generation of a population of models using patient-specific dimensions obtained from medical imaging or averaged dimensions evaluated from empirical equations based on the Golden Proportion. The average model developed using this framework accurately represents mitral valve shapes, associated with relative errors reaching less than 10% for annular and leaflet length dimensions, and less than 24% in comparison with clinical data. Moreover, model generation takes less than 5 min of computing time, and the toolbox can account for individual morphological variations and be employed to evaluate mitral valve biomechanics; following further development and validation, it will aid clinicians when choosing the best patient-specific clinical intervention and improve the design process of new medical devices.
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Affiliation(s)
- Diana C de Oliveira
- Department of Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Daniel M Espino
- Department of Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Luca Deorsola
- Paedriatic Cardiac Surgery, Ospedale Infantile Regina Margherita Sant Anna, Turin, 10126, Italy
| | - Jonathan P Mynard
- Department of Biomedical Engineering, The University of Melbourne, Melbourne, VIC, 3010, Australia; Heart Research, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia; Department of Paediatrics, The University of Melbourne, Melbourne, VIC, 3010, Australia; Department of Cardiology, Royal Children's Hospital, Melbourne, VIC, 3052, Australia
| | - Vijay Rajagopal
- Department of Biomedical Engineering, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Keith Buchan
- Department of Cardiothoracic Surgery, Aberdeen Royal Infirmary, Aberdeen, AB24 2ZN, Scotland, UK
| | - Dana Dawson
- School of Medicine, University of Aberdeen, Aberdeen, AB25 2ZD, Scotland, UK; Cardiology Department, Aberdeen Royal Infirmary, Aberdeen, AB25 2ZN, Scotland, UK
| | - Duncan E T Shepherd
- Department of Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
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34
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Essayagh B, Sabbag A, Antoine C, Benfari G, Batista R, Yang LT, Maalouf J, Thapa P, Asirvatham S, Michelena HI, Enriquez-Sarano M. The Mitral Annular Disjunction of Mitral Valve Prolapse: Presentation and Outcome. JACC Cardiovasc Imaging 2021; 14:2073-2087. [PMID: 34147457 DOI: 10.1016/j.jcmg.2021.04.029] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVES The aim of this study was to assess in patients with mitral valve prolapse (MVP) mitral annular disjunction (MAD) prevalence, phenotypic characteristics, and long-term outcomes (clinical arrhythmic events and excess mortality). BACKGROUND Clinical knowledge regarding MAD of MVP remains limited and controversial, and its potential link with untoward outcomes is unsubstantiated. METHODS A cohort of 595 (278 women, mean age 61 ± 16 years) consecutive patients with isolated MVP, with comprehensive clinical, rhythmic, Doppler echocardiographic, and consistent MAD assessment, were examined. MAD prevalence, associated MVP phenotypes, and outcomes (survival, clinical arrhythmic events) starting at diagnostic echocardiography were analyzed. To balance important baseline differences, propensity scoring matching was conducted among patients with and those without MAD. RESULTS The presence of MAD was common (n = 186 [31%]) in patients with MVP, generally in younger patients, and was not random but was independently associated with severe myxomatous disease involving bileaflet MVP and marked leaflet redundancy (both P ≤ 0.0002). The presence of MAD was also independently associated with a larger left ventricle (P = 0.005). Age-matched cohort survival after MVP diagnosis was not worse with MAD (10-year survival 93% ± 2% for patients without MAD and 97% ± 1% for those with MAD; P = 0.40), even adjusted comprehensively for MVP characteristics (P = 0.80) and accounting for time-dependent mitral surgery (P = 0.60). During follow-up, 170 patients had clinical arrhythmic events (ventricular tachycardia, n = 159; arrhythmia ablation, n = 14; cardioverter-defibrillator implantation, n = 14; sudden cardiac death, n = 3). MAD was independently associated with higher risk for arrhythmic events (adjusted HR: 2.60; 95% CI: 1.87-3.62; P < 0.0001). The link between MAD and arrhythmic events persisted with time-dependent mitral surgery (adjusted HR: 2.54; 95% CI: 1.84-3.50; P < 0.0001), was strong under medical management (adjusted HR: 3.21; 95% CI: 2.03-5.06; P < 0.0001) but was weaker after mitral surgery (adjusted HR: 2.07; 95% CI: 1.24-3.43; P = 0.005). CONCLUSIONS This large cohort with MVP comprehensively characterized shows that MAD is frequent at MVP diagnosis and is strongly linked to advanced myxomatous degeneration. The presence of MAD was independently associated with long-term excess incidence of clinical arrhythmic events. However, within the first 10 years post-diagnosis, MAD was not linked to excess mortality, and although reassurance should be provided from the survival point of view, careful monitoring for arrhythmias is in order for MAD.
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Affiliation(s)
- Benjamin Essayagh
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; Department of Cardiovascular Medicine, Simone Veil Hospital, Cannes, France
| | - Avi Sabbag
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Davidai Arrhythmia Center, Chaim Sheba Medical Center, Tel Hashomer, Israel
| | - Clémence Antoine
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Giovanni Benfari
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; Department of Cardiovascular Medicine, University of Verona, Verona, Italy
| | - Roberta Batista
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Li-Tan Yang
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Joseph Maalouf
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Prabin Thapa
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Samuel Asirvatham
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Hector I Michelena
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
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35
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Alperi A, Granada JF, Bernier M, Dagenais F, Rodés-Cabau J. Current Status and Future Prospects of Transcatheter Mitral Valve Replacement: JACC State-of-the-Art Review. J Am Coll Cardiol 2021; 77:3058-3078. [PMID: 34140110 DOI: 10.1016/j.jacc.2021.04.051] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 03/29/2021] [Accepted: 04/12/2021] [Indexed: 11/29/2022]
Abstract
Mitral regurgitation (MR) is the most prevalent valvular heart disease and, when left untreated, it confers a poorer prognosis. Catheter-based repair therapies face some limitations like their applicability on challenging anatomies and the potential recurrence of significant MR over time. Transcatheter mitral valve replacement (TMVR) has emerged as a less invasive approach potentially overcoming some of the current limitations associated with transcatheter mitral valve repair. Several devices are under clinical investigation, and a growing number of systems allow for a fully percutaneous transfemoral approach. In this review, the authors aimed to delineate the main challenges faced by the TMVR field, to highlight the key aspects for procedural planning, and to describe the clinical results of the TMVR systems under clinical investigation. Finally, they also discuss what the future perspectives are for this emerging field.
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Affiliation(s)
- Alberto Alperi
- Quebec Heart & Lung Institute, Laval University, Quebec City, Quebec, Canada
| | - Juan F Granada
- CRF-Skirball Center for Innovation, Columbia University Medical Center, New York, New York, USA
| | - Mathieu Bernier
- Quebec Heart & Lung Institute, Laval University, Quebec City, Quebec, Canada
| | - François Dagenais
- Quebec Heart & Lung Institute, Laval University, Quebec City, Quebec, Canada
| | - Josep Rodés-Cabau
- Quebec Heart & Lung Institute, Laval University, Quebec City, Quebec, Canada; Hospital Clinic of Barcelona, Barcelona, Spain.
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36
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Lee APW, Fan Y, Baig FN, Lam YY. Mechanisms of Mitral Regurgitation. JACC: ASIA 2021; 1:115-116. [PMID: 36338368 PMCID: PMC9627915 DOI: 10.1016/j.jacasi.2021.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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37
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Kim DH. Multimodality Imaging for the Assessment of Mitral Valve Disease. Cardiol Clin 2021; 39:243-253. [PMID: 33894938 DOI: 10.1016/j.ccl.2021.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Mitral valve disease is the most common valvular heart disease. Imaging determines the etiology (anatomic assessment), valve function and severity of valvular heart disease (hemodynamic assessment), remodeling of the left ventricle and right ventricle, and preplanning and guidance of percutaneous intervention. Although roles of computed tomography and magnetic resonance are increasing, echocardiography serves as the first-line imaging modality for the diagnosis and serial follow-up in most cases. This review summarizes the roles of multimodality imaging currently available from research fields to daily clinical practice.
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Affiliation(s)
- Dae-Hee Kim
- Division of Cardiology, Asan Medical Center, College of Medicine, University of Ulsan, 388-1, Poongnap-dong, Songpa-ku, Seoul 138-736, Korea.
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38
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Ge Z, Pan W, Li W, Wei L, Kong D, Pan C, Zhou D, Shu X, Ge J. Impact of Leaflet Tethering on Residual Regurgitation in Patients With Degenerative Mitral Disease After Interventional Edge-to-Edge Repair. Front Cardiovasc Med 2021; 8:647701. [PMID: 33996943 PMCID: PMC8116490 DOI: 10.3389/fcvm.2021.647701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/19/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Grade 2+ residual mitral regurgitation (MR 2+) is associated with the recurrence of MR and a lower survival rate in interventional mitral valve (MV) edge-to-edge (EE) repair. We sought to determine the MV anatomic factors affecting residual MR 2+ during interventional EE repair with the ValveClamp system in patients with degenerative MR (DMR). Methods: In this multicenter study, 62 patients with significant (grade 3+ to 4+) DMR underwent ValveClamp implantation across eight centers from July 2018 to December 2019. Patient clinical, anatomical, and procedural characteristics were prospectively collected and retrospectively analyzed. Results: A single clamp was implanted in 59 patients, and two clamps were implanted in three patients. Residual MR 2+ was found in 14 patients (22.6%) immediately after the ValveClamp procedure. Patients with residual MR 2+ showed significantly larger preoperative tenting sizes and annular dimensions than the residual MR ≤1+ group. Multivariate analysis identified tenting volume as the major determinant of residual MR 2+ after ValveClamp procedures (odds ratio, 1.410 per 0.1-mL/m2 increase; 95% confidence interval, 1.167–1.705; P < 0.001). Receiver operating characteristic curves identified a tenting volume index ≥0.82 mL/m2 as the optimal cutoff point to predict residual MR 2+ (area under curve, 0.84). Patients with a tenting volume index ≥0.82 mL/m2 were more likely to develop recurrent 3+ MR or undergo MV surgery during short-term follow-up (P < 0.001). Conclusions: Preoperative assessment of the tenting volume index will help to predict intraoperative residual MR 2+ in patients with DMR receiving EE-based interventional repair. Improvements in the interventional strategy are warranted for sustained MR reduction in patients with DMR with unfavorable anatomy.
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Affiliation(s)
- Zhenyi Ge
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China.,Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Cardiovascular Disease, Fudan University, Shanghai, China
| | - Wenzhi Pan
- Shanghai Institute of Cardiovascular Disease, Fudan University, Shanghai, China.,Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wei Li
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lai Wei
- Shanghai Institute of Cardiovascular Disease, Fudan University, Shanghai, China.,Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Dehong Kong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cuizhen Pan
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Cardiovascular Disease, Fudan University, Shanghai, China
| | - Daxin Zhou
- Shanghai Institute of Cardiovascular Disease, Fudan University, Shanghai, China.,Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xianhong Shu
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China.,Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Cardiovascular Disease, Fudan University, Shanghai, China.,Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Junbo Ge
- Shanghai Institute of Cardiovascular Disease, Fudan University, Shanghai, China.,Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
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Hagendorff A, Knebel F, Helfen A, Stöbe S, Haghi D, Ruf T, Lavall D, Knierim J, Altiok E, Brandt R, Merke N, Ewen S. Echocardiographic assessment of mitral regurgitation: discussion of practical and methodologic aspects of severity quantification to improve diagnostic conclusiveness. Clin Res Cardiol 2021; 110:1704-1733. [PMID: 33839933 PMCID: PMC8563569 DOI: 10.1007/s00392-021-01841-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 03/08/2021] [Indexed: 12/28/2022]
Abstract
The echocardiographic assessment of mitral valve regurgitation (MR) by characterizing specific morphological features and grading its severity is still challenging. Analysis of MR etiology is necessary to clarify the underlying pathological mechanism of the valvular defect. Severity of mitral regurgitation is often quantified based on semi-quantitative parameters. However, incongruent findings and/or interpretations of regurgitation severity are frequently observed. This proposal seeks to offer practical support to overcome these obstacles by offering a standardized workflow, an easy means to identify non-severe mitral regurgitation, and by focusing on the quantitative approach with calculation of the individual regurgitant fraction. This work also indicates main methodological problems of semi-quantitative parameters when evaluating MR severity and offers appropriateness criteria for their use. It addresses the diagnostic importance of left-ventricular wall thickness, left-ventricular and left atrial volumes in relation to disease progression, and disease-related complaints to improve interpretation of echocardiographic findings. Finally, it highlights the conditions influencing the MR dynamics during echocardiographic examination. These considerations allow a reproducible, verifiable, and transparent in-depth echocardiographic evaluation of MR patients ensuring consistent haemodynamic plausibility of echocardiographic results.
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Affiliation(s)
- Andreas Hagendorff
- Department of Cardiology, Klinik und Poliklinik für Kardiologie, University of Leipzig, Liebigstraße 20, 04103, Leipzig, Germany.
| | - Fabian Knebel
- Department of Cardiology, University of Berlin, Charité Universitätsmedizin Berlin, Campus Mitte, Medizinische Klinik mit Schwerpunkt Kardiologie und Angiologie, Charitéplatz 1, 10117, Berlin, Germany
| | - Andreas Helfen
- Department of Cardiology, Katholisches Klinikum Lünen Werne GmbH, St-Marien-Hospital Lünen, Altstadtstrasse 23, 44534, Lünen, Germany
| | - Stephan Stöbe
- Department of Cardiology, Klinik und Poliklinik für Kardiologie, University of Leipzig, Liebigstraße 20, 04103, Leipzig, Germany
| | - Dariush Haghi
- Kardiologische Praxisklinik Ludwigshafen, Akademische Lehrpraxis der Universität Mannheim, Ludwig-Guttmann-Strasse 11, 67071, Ludwigshafen, Germany
| | - Tobias Ruf
- Department of Cardiology, Center of Cardiology, Heart Valve Center, University Medical Center Mainz, University of Mainz, Langenbeckstrasse 1, 55131, Mainz, Germany
| | - Daniel Lavall
- Department of Cardiology, Klinik und Poliklinik für Kardiologie, University of Leipzig, Liebigstraße 20, 04103, Leipzig, Germany
| | - Jan Knierim
- Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin, Augustenburger Platz 1, Berlin, 13353, Germany
| | - Ertunc Altiok
- Department of Cardiology, University of Aachen, Pauwelsstrasse 30, 52074, Aachen, Germany
| | - Roland Brandt
- Department of Cardiology, Kerckhoff Heart Center, Benekestr. 2-8, 61231, Bad Nauheim, Germany
| | - Nicolas Merke
- Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin, Augustenburger Platz 1, Berlin, 13353, Germany
| | - Sebastian Ewen
- Klinik für Innere Medizin III - Kardiologie, Angiologie und Internistische Intensivmedizin, Universitätsklinikum des Saarlandes, Kirrberger Str, IMED, 66421, Homburg, Germany
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40
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Identification of a High-risk Subgroup With Malignant Mitral Valve Prolapse Who Are Predisposed to Sudden Cardiac Death: A Review. Crit Pathw Cardiol 2021; 20:31-35. [PMID: 32947378 DOI: 10.1097/hpc.0000000000000242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Mitral valve prolapse (MVP) affects approximately 170 million people worldwide; however, phenotypically, there is a wide variety of heterogeneity. In particular subsets, the incidence of sudden cardiac death is calculated to be 998 per 100,000 person-years, which is significantly increased when compared with the general population of MVP patients. Individuals with high-risk features have been identified as young females with bileaflet MVP and electrocardiogram findings of frequent complex ectopy, ST-T wave changes, and inferior T wave inversions. Supplemental imaging modalities in this subgroup demonstrate redundant leaflets and chordae on 2-dimensional transthoracic echocardiography along with varying severity of mitral annular disjunction. Detailed morphologic assessment by 3-dimensional echocardiography provides a quantitative assessment of annular disjunction along with left ventricular longitudinal and basal circumferential strain patterns. Late gadolinium enhancement on cardiac magnetic resonance imaging identifies diffuse and isolated left ventricle fibrosis involving the fascicles and papillary muscles, which has been visualized in isolation during autopsy. Findings of this review propose that sudden cardiac death as a result of malignant arrhythmias arises from automaticity, complex ectopy, and reentry at the level of the fascicles and papillary muscles. The repetitive mechanical stress provides a nidus for the development of both micro- and macrofibrosis easily identified by late gadolinium enhancement on cardiac magnetic resonance imaging. Escalation to electrophysiology studies and early intervention could provide new targeted lifesaving therapies.
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41
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Precision medicine in human heart modeling : Perspectives, challenges, and opportunities. Biomech Model Mechanobiol 2021; 20:803-831. [PMID: 33580313 PMCID: PMC8154814 DOI: 10.1007/s10237-021-01421-z] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/07/2021] [Indexed: 01/05/2023]
Abstract
Precision medicine is a new frontier in healthcare that uses scientific methods to customize medical treatment to the individual genes, anatomy, physiology, and lifestyle of each person. In cardiovascular health, precision medicine has emerged as a promising paradigm to enable cost-effective solutions that improve quality of life and reduce mortality rates. However, the exact role in precision medicine for human heart modeling has not yet been fully explored. Here, we discuss the challenges and opportunities for personalized human heart simulations, from diagnosis to device design, treatment planning, and prognosis. With a view toward personalization, we map out the history of anatomic, physical, and constitutive human heart models throughout the past three decades. We illustrate recent human heart modeling in electrophysiology, cardiac mechanics, and fluid dynamics and highlight clinically relevant applications of these models for drug development, pacing lead failure, heart failure, ventricular assist devices, edge-to-edge repair, and annuloplasty. With a view toward translational medicine, we provide a clinical perspective on virtual imaging trials and a regulatory perspective on medical device innovation. We show that precision medicine in human heart modeling does not necessarily require a fully personalized, high-resolution whole heart model with an entire personalized medical history. Instead, we advocate for creating personalized models out of population-based libraries with geometric, biological, physical, and clinical information by morphing between clinical data and medical histories from cohorts of patients using machine learning. We anticipate that this perspective will shape the path toward introducing human heart simulations into precision medicine with the ultimate goals to facilitate clinical decision making, guide treatment planning, and accelerate device design.
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42
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Myxomatous Mitral Valve Disease with Mitral Valve Prolapse and Mitral Annular Disjunction: Clinical and Functional Significance of the Coincidence. J Cardiovasc Dev Dis 2021; 8:jcdd8020009. [PMID: 33498935 PMCID: PMC7911536 DOI: 10.3390/jcdd8020009] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/19/2021] [Accepted: 01/22/2021] [Indexed: 11/17/2022] Open
Abstract
The morphological changes that occur in myxomatous mitral valve disease (MMVD) involve various components, ultimately leading to the impairment of mitral valve (MV) function. In this context, intrinsic mitral annular abnormalities are increasingly recognized, such as a mitral annular disjunction (MAD), a specific anatomical abnormality whereby there is a distinct separation between the mitral annulus and the left atrial wall and the basal portion of the posterolateral left ventricular myocardium. In recent years, several studies have suggested that MAD contributes to myxomatous degeneration of the mitral leaflets, and there is growing evidence that MAD is associated with ventricular arrhythmias and sudden cardiac death. In this review, the morphological characteristics of MAD and imaging tools for diagnosis will be described, and the clinical and functional aspects of the coincidence of MAD and myxomatous MVP will be discussed.
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43
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Mizuno T, Chen A, Mamada K, Takahashi A, Uchida S, Uechi M. Analysis of mitral valve morphology in dogs undergoing mitral valve repair with three-dimensional transesophageal echocardiography. J Vet Cardiol 2021; 34:64-72. [PMID: 33592560 DOI: 10.1016/j.jvc.2021.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 12/27/2020] [Accepted: 01/12/2021] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Information about real-time three-dimensional (3D) transesophageal echocardiography (TEE) for the evaluation of canine mitral valve morphology is lacking in veterinary medicine. OBJECTIVES To evaluate the feasibility of 3D TEE for the evaluation of canine mitral valves and whether there was a difference in mitral valve morphology between American College of Veterinary Internal Medicine (ACVIM) stages. ANIMALS Thirty-one dogs were evaluated, including nine dogs classified as ACVIM stage B2, 15 as stage C, and seven as stage D. MATERIALS AND METHODS Three-dimensional TEE was performed after anesthetic induction for mitral valve surgery, and the 3D geometry of the mitral valve apparatus was measured. RESULTS The intraclass correlation coefficient was good in both inter- and intraobserver analyses of the 3D measurements of mitral valve annulus geometry and excellent in both inter- and intraobserver analyses in the 3D measurements of mitral valve annular and leaflet sizes. Annulus height to commissural width ratio of stage D dogs showed significantly lower values than B2 dogs (B2: 14.2% [9.1-20.5%]; C: 10.6% [6.5-24.1%]; D: 9.5% [4.7-13.8%]). The aortic-mitral angle of stages C and D were significantly flatter than stage B2 (B2: 122.32 ± 9.39; C: 133.66 ± 8.43; D: 140.70 ± 10.70). CONCLUSIONS Real-time 3D echocardiography using TEE is a feasible method to evaluate the morphology of the mitral valve in dogs. The saddle shape of the mitral annulus and aortic-mitral angle were flatter in stage D. Further studies are required to understand the pathology of mitral valve disease in dogs.
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Affiliation(s)
- T Mizuno
- JASMINE Veterinary Cardiovascular Medical Center, 2-7-3 Nakagawa, Tsuzuki, Yokohama, Kanagawa, 224-0001, Japan.
| | - A Chen
- JASMINE Veterinary Cardiovascular Medical Center, 2-7-3 Nakagawa, Tsuzuki, Yokohama, Kanagawa, 224-0001, Japan
| | - K Mamada
- JASMINE Veterinary Cardiovascular Medical Center, 2-7-3 Nakagawa, Tsuzuki, Yokohama, Kanagawa, 224-0001, Japan
| | - A Takahashi
- JASMINE Veterinary Cardiovascular Medical Center, 2-7-3 Nakagawa, Tsuzuki, Yokohama, Kanagawa, 224-0001, Japan
| | - S Uchida
- JASMINE Veterinary Cardiovascular Medical Center, 2-7-3 Nakagawa, Tsuzuki, Yokohama, Kanagawa, 224-0001, Japan
| | - M Uechi
- JASMINE Veterinary Cardiovascular Medical Center, 2-7-3 Nakagawa, Tsuzuki, Yokohama, Kanagawa, 224-0001, Japan
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44
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Bender JM, Adams WR, Mahadevan-Jansen A, Merryman WD, Bersi MR. Radiofrequency ablation alters the microstructural organization of healthy and enzymatically digested porcine mitral valves. EXPERIMENTAL MECHANICS 2021; 61:235-251. [PMID: 33776074 PMCID: PMC7992362 DOI: 10.1007/s11340-020-00662-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 08/20/2020] [Accepted: 08/25/2020] [Indexed: 05/12/2023]
Abstract
BACKGROUND Myxomatous mitral valve degeneration is a common cause of mitral regurgitation and is often associated with mitral valve prolapse. With no known targets to pharmacologically treat mitral valve prolapse, surgery is often the only treatment option. Recently, radiofrequency ablation has been proposed as a percutaneous alternative to surgical resection for the reduction of mitral valve leaflet area. OBJECTIVE Using an in vitro model of porcine mitral valve anterior leaflet enlargement following enzymatic digestion, we sought to investigate mechanisms by which radiofrequency ablation alters the geometry, microstructural organization, and mechanical properties of healthy and digested leaflets. METHODS Paired measurements before and after ablation revealed the impact of radiofrequency ablation on leaflet properties. Multiphoton imaging was used to characterize changes in the structure and organization of the valvular extracellular matrix; planar biaxial mechanical testing and constitutive modeling were used to estimate mechanical properties of healthy and digested leaflets. RESULTS Enzymatic digestion increased leaflet area and thickness to a similar extent as clinical mitral valve disease. Radiofrequency ablation altered extracellular matrix alignment and reduced the area of digested leaflets to that of control. Additionally, enzymatic digestion resulted in fiber alignment and reorientation toward the radial direction, causing increased forces during ablation and a structural stiffening which was improved by radiofrequency ablation. CONCLUSION Radiofrequency ablation induces radial extracellular matrix alignment and effectively reduces the area of enlarged mitral valve leaflets. Hence, this technique may be a therapeutic approach for myxomatous mitral valve disease and is thus an avenue for future study.
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Affiliation(s)
- J M Bender
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - W R Adams
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - A Mahadevan-Jansen
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - W D Merryman
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - M R Bersi
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
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45
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Hiemstra YL, Tomsic A, Gripari P, van Wijngaarden AL, van der Pas SL, Palmen M, Klautz RJM, Pepi M, Bax JJ, Delgado V, Marsan NA. Evolution from mitral annular dysfunction to severe mitral regurgitation in Barlow's disease. Interact Cardiovasc Thorac Surg 2020; 32:506-514. [PMID: 33367628 DOI: 10.1093/icvts/ivaa304] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 10/25/2020] [Accepted: 11/03/2020] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Barlow's disease (BD) is characterized by thick, redundant mitral valve (MV) leaflets, which can lead to prolapse and significant mitral regurgitation (MR). MV annular abnormalities are also commonly observed and increasingly recognized as possible primary pathology, with leaflet thickening being secondary to increased stress on the MV apparatus. To provide more insights into this hypothesis, the evolution of MV abnormalities over time in patients with BD was assessed. METHODS A total of 64 patients (54 ± 12 years, 72% male) with BD who underwent MV surgery and had multiple transthoracic echocardiograms (TTE) before surgery were included. In total, 186 TTE were analysed (median time interval 4.2, interquartile range 2.2-6.5 years) including specific MV characteristics. RESULTS At baseline, MV leaflet length, thickness, billowing height and annular diameter were larger in patients with BD compared to 59 healthy subjects. Systolic outward motion (curling) of the annulus was observed in 77% and severe mitral annular disjunction (≥5 mm) in 38% of patients with BD. Forty (63%) patients had MR grade I-II and 24 (37%) MR grade III-IV; at baseline, the 2 groups only differed in left atrial volume and in thickness and billowing height of the posterior leaflet, showing comparable MV annular abnormalities and dilatation despite different grades of MR. Over time, MV annulus diameter, leaflet length and billowing height increased significantly along with MR grade. CONCLUSIONS In patients with BD, MV annulus abnormalities are present at an early stage and precede the development of significant MR, suggesting their substantial role in the pathophysiology of this disease and as an important target for surgical treatment.
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Affiliation(s)
- Yasmine L Hiemstra
- Department of Cardiology, Leiden University Medical Center, Leiden, Netherlands
| | - Anton Tomsic
- Department of Cardiothoracic Surgery, Leiden University Medical Center, Leiden, Netherlands
| | | | | | - Stéphanie L van der Pas
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, Netherlands.,Mathematical Institute, Leiden University, Leiden, Netherlands
| | - Meindert Palmen
- Department of Cardiothoracic Surgery, Leiden University Medical Center, Leiden, Netherlands
| | - Robert J M Klautz
- Department of Cardiothoracic Surgery, Leiden University Medical Center, Leiden, Netherlands
| | - Mauro Pepi
- Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | - Jeroen J Bax
- Department of Cardiology, Leiden University Medical Center, Leiden, Netherlands
| | - Victoria Delgado
- Department of Cardiology, Leiden University Medical Center, Leiden, Netherlands
| | - Nina Ajmone Marsan
- Department of Cardiology, Leiden University Medical Center, Leiden, Netherlands
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46
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Fan Y, Wan S, Wong RHL, Lee APW. Atrial functional mitral regurgitation: mechanisms and surgical implications. Asian Cardiovasc Thorac Ann 2020; 28:421-426. [DOI: 10.1177/0218492320941388] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The term atrial functional mitral regurgitation refers to a newly recognized disease entity in which mitral regurgitation occurs secondary to left atrial disease, without left ventricular dilatation and intrinsic mitral valve disease, typically in the setting of long-standing atrial fibrillation. Recent evidence suggests that atrial functional mitral regurgitation is associated with increased risk of death and heart failure re-hospitalization. The etiology, pathophysiology, and mechanism of atrial functional mitral regurgitation is not completely understood but they should not be regarded as the same as for the conventional type of functional mitral regurgitation secondary to left ventricular dilatation and dysfunction. Mitral annular dilatation, atriogenic leaflet distortion, insufficient leaflet remodeling, and subtle left ventricular dysfunction may play a role in the pathogenesis of atrial functional mitral regurgitation. The therapeutic and surgical considerations of atrial functional mitral regurgitation are different from those of ventricular functional mitral regurgitation. In this review, we assess current evidence regarding this new disease entity and propose a new surgical approach based on up-to-date understanding and experience of this condition.
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Affiliation(s)
- Yiting Fan
- Division of Cardiology, Department of Medicine and Therapeutics, Laboratory of Cardiac Imaging and 3D Printing, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Song Wan
- Division of Cardiothoracic Surgery, Department of Surgery, The Chinese University of Hong Kong, Hong Kong
| | - Randolph Hung-Leung Wong
- Division of Cardiothoracic Surgery, Department of Surgery, The Chinese University of Hong Kong, Hong Kong
| | - Alex Pui-Wai Lee
- Division of Cardiology, Department of Medicine and Therapeutics, Laboratory of Cardiac Imaging and 3D Printing, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong
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47
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Ge Z, Pan W, Zhou D, Li W, Wei L, Liu X, Pu Z, Shu X, Pan C, Ge J. Effect of a novel transcatheter edge-to-edge repair device on the three-dimensional geometry of mitral valve in degenerative mitral regurgitation. Catheter Cardiovasc Interv 2020; 97:177-185. [PMID: 32497395 DOI: 10.1002/ccd.29002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/11/2020] [Accepted: 05/12/2020] [Indexed: 12/31/2022]
Abstract
OBJECTIVES We sought to assess the acute intraprocedural effects of the ValveClamp system in DMR patients on the mitral valve (MV) three-dimensional (3D) geometry and the association of these effects with mitral regurgitation (MR) reduction. BACKGROUND Few data are available about the specific impact of transcatheter edge-to-edge repair in patients with degenerative mitral regurgitation (DMR). METHODS Thirty-five symptomatic patients (age 74.26 ± 6.61 years) with Grade 3 to 4+ degenerative MR underwent 3D transoesophageal echocardiography (TEE) during ValveClamp implantation. Volumetric data sets were retrospectively analyzed using mitral valve quantitative 3D modeling software. RESULTS Mitral valve annular anterior-posterior (AP) diameter decreased from 33.24 ± 4.03 to 31.12 ± 3.66 mm (p < .001), and prolapse height from 4.78 ± 2.19 to 2.32 ± 1.92 mm (p < .001), and total exposed leaflet area from 1,110.29 ± 224.21 mm2 to 1,013.44 ± 228.71 mm (p = .004). Accordingly, we observed a significant reduction of MR severity after ValveClamp implantation. Multivariable analysis revealed postprocedural MR reduction was associated with shortening in anterior-posterior diameter (coefficient 0.427, p = .008) and reduction in prolapse height (coefficient 0.369, p = .021). CONCLUSIONS ValveClamp implantation exerts an acute effect on the 3D MV geometry. Postprocedural reduction in AP diameter and reduction in prolapse height correlates with MR downgrading in patients with degenerative MR.
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Affiliation(s)
- Zhenyi Ge
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wenzhi Pan
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Daxin Zhou
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wei Li
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lai Wei
- Department of Cardiac Surgery, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xianbao Liu
- Department of Cardiology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhaoxia Pu
- Department of Cardiology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xianhong Shu
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cuizhen Pan
- Department of Echocardiography, Shanghai Institute of Cardiovascular Disease, Shanghai Institute of Medical Imaging, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Junbo Ge
- Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China
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48
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Topilsky Y. Mitral Regurgitation: Anatomy, Physiology, and Pathophysiology-Lessons Learned From Surgery and Cardiac Imaging. Front Cardiovasc Med 2020; 7:84. [PMID: 32548127 PMCID: PMC7272584 DOI: 10.3389/fcvm.2020.00084] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 04/20/2020] [Indexed: 02/04/2023] Open
Abstract
The normal mitral valve is a dynamic structure that permits blood to flow from the left atrial (LA) to left ventricle (LV) during diastole and sealing of the LA from the LV during systole. The main components of the mitral apparatus are the mitral annulus (MA), the mitral leaflets, the chordae tendineae, and the papillary muscles (PM) (Figure 1). Normal valve function is dependent on the integrity and normal interplay of these components. Abnormal function of any one of the components, or their interplay can result in mitral regurgitation (MR). Understanding the anatomy and physiology of all the component of the mitral valve is important for the diagnosis, and for optimal planning of repair procedures. In this review we will focus first on normal anatomy and physiology of the different parts of the mitral valve (MA, leaflets, chordae tendineae, and PM). In the second part we will focus on the pathologic anatomic and physiologic derangements associated with different types of MR.
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Affiliation(s)
- Yan Topilsky
- The Department of Cardiology, Tel Aviv Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
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49
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Oliveira D, Srinivasan J, Espino D, Buchan K, Dawson D, Shepherd D. Geometric description for the anatomy of the mitral valve: A review. J Anat 2020; 237:209-224. [PMID: 32242929 DOI: 10.1111/joa.13196] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 12/16/2022] Open
Abstract
The mitral valve is a complex anatomical structure whose physiological functioning relies on the biomechanical properties and structural integrity of its components. Their compromise can lead to mitral valve dysfunction, associated with morbidity and mortality. Therefore, a review on the morphometry of the mitral valve is crucial, more specifically on the importance of valve dimensions and shape for its function. This review initially provides a brief background on the anatomy and physiology of the mitral valve, followed by an analysis of the morphological information available. A characterisation of mathematical descriptions of several parts of the valve is performed and the impact of different dimensions and shape changes in disease is then outlined. Finally, a section regarding future directions and recommendations for the use of morphometric information in clinical analysis of the mitral valve is presented.
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Affiliation(s)
- Diana Oliveira
- Department of Mechanical Engineering, University of Birmingham, Birmingham, UK
| | | | - Daniel Espino
- Department of Mechanical Engineering, University of Birmingham, Birmingham, UK
| | - Keith Buchan
- Department of Cardiothoracic Surgery, Aberdeen Royal Infirmary, Aberdeen, UK
| | - Dana Dawson
- Cardiology Research Facility, University of Aberdeen and Aberdeen Royal Infirmary, Aberdeen, UK
| | - Duncan Shepherd
- Department of Mechanical Engineering, University of Birmingham, Birmingham, UK
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50
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Kreidel F, Ruf T, Tamm A, Geyer M, Emrich T, von Bardeleben RS. [Evaluation of mitral regurgitation : How much quantification do we need?]. Herz 2019; 44:574-585. [PMID: 31555893 DOI: 10.1007/s00059-019-04857-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Severe mitral regurgitation (MR) is associated with increased morbidity and mortality. Thus, the correct evaluation of the underlying etiology, pathomechanism and severity is crucial for optimal treatment. Echocardiography is the predominant diagnostic modality in the clinical routine as it enables grading of mitral regurgitation, which can frequently be achieved by readily available qualitative parameters. Additionally, echocardiography provides several methods to quantify the hemodynamic significance of MR. The effective regurgitation orifice area (EROA) is the quantitative parameter best correlated with clinical events. American and European imaging guidelines both recommend the use of quantitative parameters even though they disagree on the cut-off values for secondary MR. The evaluation of MR should always include an assessment of the adjacent heart chambers in order to be able to assess the impact of volume overload on size and function of the left ventricle and left atrium. The final interpretation of the quantitative parameters requires knowledge of left ventricular volume and ejection fraction. Newer 3D-echocardiographic approaches to quantify MR are less dependent on mathematical assumptions and have shown convincing results in several studies but still lack sufficient clinical validation. As an alternative to echocardiography, for specific indications cardiac magnetic resonance imaging (MRI) has proven to be a systematic and observer-independent method for quantification of MR.
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Affiliation(s)
- F Kreidel
- Department of Cardiology, Universitätsmedizin Mainz, Langenbeckstraße 1, 55131, Mainz, Deutschland.
| | - T Ruf
- Department of Cardiology, Universitätsmedizin Mainz, Langenbeckstraße 1, 55131, Mainz, Deutschland
| | - A Tamm
- Department of Cardiology, Universitätsmedizin Mainz, Langenbeckstraße 1, 55131, Mainz, Deutschland
| | - M Geyer
- Department of Cardiology, Universitätsmedizin Mainz, Langenbeckstraße 1, 55131, Mainz, Deutschland
| | - T Emrich
- Klinik für Radiologie der Universitätsmedizin Main, Mainz, Deutschland
| | - R S von Bardeleben
- Department of Cardiology, Universitätsmedizin Mainz, Langenbeckstraße 1, 55131, Mainz, Deutschland
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