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Galizia MS, Attili AK, Truesdell WR, Smith ED, Helms AS, Sulaiman AMA, Madamanchi C, Agarwal PP. Imaging Features of Arrhythmogenic Cardiomyopathies. Radiographics 2024; 44:e230154. [PMID: 38512728 PMCID: PMC10995833 DOI: 10.1148/rg.230154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/09/2023] [Accepted: 08/28/2023] [Indexed: 03/23/2024]
Abstract
Arrhythmogenic cardiomyopathy (ACM) is a genetic disease characterized by replacement of ventricular myocardium with fibrofatty tissue, predisposing the patient to ventricular arrhythmias and/or sudden cardiac death. Most cases of ACM are associated with pathogenic variants in genes that encode desmosomal proteins, an important cell-to-cell adhesion complex present in both the heart and skin tissue. Although ACM was first described as a disease predominantly of the right ventricle, it is now acknowledged that it can also primarily involve the left ventricle or both ventricles. The original right-dominant phenotype is traditionally diagnosed using the 2010 task force criteria, a multifactorial algorithm divided into major and minor criteria consisting of structural criteria based on two-dimensional echocardiographic, cardiac MRI, or right ventricular angiographic findings; tissue characterization based on endomyocardial biopsy results; repolarization and depolarization abnormalities based on electrocardiographic findings; arrhythmic features; and family history. Shortfalls in the task force criteria due to the modern understanding of the disease have led to development of the Padua criteria, which include updated criteria for diagnosis of the right-dominant phenotype and new criteria for diagnosis of the left-predominant and biventricular phenotypes. In addition to incorporating cardiac MRI findings of ventricular dilatation, systolic dysfunction, and regional wall motion abnormalities, the new Padua criteria emphasize late gadolinium enhancement at cardiac MRI as a key feature in diagnosis and imaging-based tissue characterization. Conditions to consider in the differential diagnosis of the right-dominant phenotype include various other causes of right ventricular dilatation such as left-to-right shunts and variants of normal right ventricular anatomy that can be misinterpreted as abnormalities. The left-dominant phenotype can mimic myocarditis at imaging and clinical examination. Additional considerations for the differential diagnosis of ACM, particularly for the left-dominant phenotype, include sarcoidosis and dilated cardiomyopathy. ©RSNA, 2024 Test Your Knowledge questions for this article are available in the supplemental material.
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Affiliation(s)
- Mauricio S. Galizia
- From the Department of Radiology (M.S.G., A.K.A., W.R.T., P.P.A.) and
Division of Cardiovascular Medicine, Department of Internal Medicine (E.D.S.,
A.S.H., A.M.A.S., C.M.), Michigan Medicine, University of Michigan, 1500 E
Medical Center Dr, Ann Arbor, MI 48109
| | - Anil K. Attili
- From the Department of Radiology (M.S.G., A.K.A., W.R.T., P.P.A.) and
Division of Cardiovascular Medicine, Department of Internal Medicine (E.D.S.,
A.S.H., A.M.A.S., C.M.), Michigan Medicine, University of Michigan, 1500 E
Medical Center Dr, Ann Arbor, MI 48109
| | - William R. Truesdell
- From the Department of Radiology (M.S.G., A.K.A., W.R.T., P.P.A.) and
Division of Cardiovascular Medicine, Department of Internal Medicine (E.D.S.,
A.S.H., A.M.A.S., C.M.), Michigan Medicine, University of Michigan, 1500 E
Medical Center Dr, Ann Arbor, MI 48109
| | - Eric D. Smith
- From the Department of Radiology (M.S.G., A.K.A., W.R.T., P.P.A.) and
Division of Cardiovascular Medicine, Department of Internal Medicine (E.D.S.,
A.S.H., A.M.A.S., C.M.), Michigan Medicine, University of Michigan, 1500 E
Medical Center Dr, Ann Arbor, MI 48109
| | - Adam S. Helms
- From the Department of Radiology (M.S.G., A.K.A., W.R.T., P.P.A.) and
Division of Cardiovascular Medicine, Department of Internal Medicine (E.D.S.,
A.S.H., A.M.A.S., C.M.), Michigan Medicine, University of Michigan, 1500 E
Medical Center Dr, Ann Arbor, MI 48109
| | - Abdulbaset M. A. Sulaiman
- From the Department of Radiology (M.S.G., A.K.A., W.R.T., P.P.A.) and
Division of Cardiovascular Medicine, Department of Internal Medicine (E.D.S.,
A.S.H., A.M.A.S., C.M.), Michigan Medicine, University of Michigan, 1500 E
Medical Center Dr, Ann Arbor, MI 48109
| | - Chaitanya Madamanchi
- From the Department of Radiology (M.S.G., A.K.A., W.R.T., P.P.A.) and
Division of Cardiovascular Medicine, Department of Internal Medicine (E.D.S.,
A.S.H., A.M.A.S., C.M.), Michigan Medicine, University of Michigan, 1500 E
Medical Center Dr, Ann Arbor, MI 48109
| | - Prachi P. Agarwal
- From the Department of Radiology (M.S.G., A.K.A., W.R.T., P.P.A.) and
Division of Cardiovascular Medicine, Department of Internal Medicine (E.D.S.,
A.S.H., A.M.A.S., C.M.), Michigan Medicine, University of Michigan, 1500 E
Medical Center Dr, Ann Arbor, MI 48109
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Zheng JY, Chen BH, Wu R, An DA, Shi RY, Wu CW, Tang LL, Zhao L, Wu LM. Prognostic value of right atrial strains in arrhythmogenic right ventricular cardiomyopathy. Insights Imaging 2024; 15:58. [PMID: 38411736 PMCID: PMC10899550 DOI: 10.1186/s13244-024-01630-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 01/18/2024] [Indexed: 02/28/2024] Open
Abstract
OBJECTIVES Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiomyopathy characterized by progressive fibrofatty infiltration of atrial and ventricular myocardium resulting in adverse cardiac events. Atrial function has been increasingly recognized as prognostically important for cardiovascular disease. As the right atrial (RA) strain is a sensitive parameter to describe RA function, we aimed to analyze the prognostic value of the RA strain in ARVC. METHODS RA strain parameters were derived from cardiac magnetic resonance (CMR) images of 105 participants with definite ARVC. The endpoint was defined as a combination of sudden cardiac death, survival cardiac arrest, and appropriate implantable cardioverter-defibrillator intervention. Cox regression and Kaplan-Meier survival analyses were performed to evaluate the association between RA strain parameters and endpoint. Concordance index (C index), net reclassification index (NRI), and integrated discrimination improvement (IDI) were calculated to assess the incremental value of RA strain in predicting the endpoint. RESULTS After a median follow-up of 5 years, 36 (34.3%) reaching the endpoint displayed significantly reduced RA strain parameters. At Kaplan-Meier analysis, impaired RA reservoir (RARS) and booster strains (RABS) were associated with an increased risk of the endpoint. After adjusting for conventional risk factors, RARS (hazard ratio [HR], 0.956; p = 0.005) and RABS (HR, 0.906; p = 0.002) resulted as independent predictors for endpoint at Cox regression analyses. In addition, RARS and RABS improved prognostic value to clinical risk factors and CMR morphological and functional predictors (all p < 0.05). CONCLUSION RARS and RABS were independent predictors for adverse cardiac events, which could provide incremental prognostic value for conventional predictors in ARVC. CRITICAL RELEVANCE STATEMENT We evaluated the prognostic value of right atrial strain in ARVC patients and suggested cardiologists consider RA strain as a predictive parameter when evaluating the long-term outcome of ARVC patients in order to formulate better clinical therapy. KEY POINTS • Patients with ARVC had significantly reduced RA strain and strain rates compared with healthy participants. • Participants with lower RA reservoir and booster stains were associated with a significantly higher risk of adverse cardiac events. • RA booster and reservoir strain provide incremental value to conventional parameters.
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Affiliation(s)
- Jin-Yu Zheng
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
| | - Bing-Hua Chen
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
| | - Rui Wu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
| | - Dong-Aolei An
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
| | - Ruo-Yang Shi
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
| | - Chong-Wen Wu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
| | - Lang-Lang Tang
- Department of Radiology, Longyan First Hospital, Affiliated to Fujian Medical University, Longyan, 364000, People's Republic of China
| | - Lei Zhao
- Department of Radiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, People's Republic of China.
| | - Lian-Ming Wu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China.
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Zheng JY, Chen BH, Wu R, An DA, Shi RY, Wu CW, Xie JY, Jiang SS, Jia V, Zhao L, Wu LM. 3D Fractal Dimension Analysis: Prognostic Value of Right Ventricular Trabecular Complexity in Participants with Arrhythmogenic Cardiomyopathy. J Magn Reson Imaging 2024. [PMID: 38258534 DOI: 10.1002/jmri.29237] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Arrhythmogenic cardiomyopathy (ACM) is characterized by progressive myocardial fibro-fatty infiltration accompanied by trabecular disarray. Traditionally, two-dimensional (2D) instead of 3D fractal dimension (FD) analysis has been used to evaluate trabecular disarray. However, the prognostic value of trabecular disorder assessed by 3D FD measurement remains unclear. PURPOSE To investigate the prognostic value of right ventricular trabecular complexity in ACM patients using 3D FD analysis based on cardiac MR cine images. STUDY TYPE Retrospective. POPULATION 85 ACM patients (mean age: 45 ± 17 years, 52 male). FIELD STRENGTH/SEQUENCE 3.0T/cine imaging, T2-short tau inversion recovery (T2-STIR), and late gadolinium enhancement (LGE). ASSESSMENT Using cine images, RV (right ventricular) volumetric and functional parameters were obtained. RV trabecular complexity was measured with 3D fractal analysis by box-counting method to calculate 3D-FD. Cox and logistic regression models were established to evaluate the prognostic value of 3D-FD for major adverse cardiac events (MACE). STATISTICAL TESTS Cox regression and logistic regression to explore the prognostic value of 3D-FD. C-index, time-dependent receiver operating characteristic (ROC) curves and area under the ROC curve (AUC) to evaluate the incremental value of 3D-FD. Intraclass correlation coefficient for interobserver variability. P < 0.05 indicated statistical significance. RESULTS 26 MACE were recorded during the 60 month follow-up (interquartile range: 48-67 months). RV 3D-FD significantly differed between ACM patients with MACE (2.67, interquartile range: 2.51 ~ 2.81) and without (2.52, interquartile range: 2.40 ~ 2.67) and was a significant independent risk factor for MACE (hazard ratio, 1.02; 95% confidence interval: 1.01, 1.04). In addition, prognostic model fitness was significantly improved after adding 3D-FD to RV global longitudinal strain, LV involvement, and 5-year risk score separately. DATA CONCLUSION The myocardial trabecular complexity assessed through 3D FD analysis was found associated with MACE and provided incremental prognostic value beyond conventional ACM risk factors. EVIDENCE LEVEL 4 TECHNICAL EFFICACY: Stage 1.
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Affiliation(s)
- Jin-Yu Zheng
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bing-Hua Chen
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Rui Wu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Dong-Aolei An
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ruo-Yang Shi
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chong-Wen Wu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | | | | | - Victor Jia
- University of Michigan, Ann Arbor, Michigan, USA
| | - Lei Zhao
- Department of Radiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Lian-Ming Wu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Dong Z, Ma X, Wang J, Yang S, Yu S, Song Y, Tang Y, Xiang X, Yang K, Zhao K, Lu M, Chen X, Zhao S. Incremental Diagnostic Value of Right Ventricular Strain Analysis in Arrhythmogenic Right Ventricular Cardiomyopathy. J Am Heart Assoc 2024; 13:e031403. [PMID: 38156506 PMCID: PMC10863820 DOI: 10.1161/jaha.123.031403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 11/14/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND Strain analysis is a sensitive method for the assessment of ventricular structural or functional alterations. The authors aimed to determine whether right ventricular (RV) strain parameters can discriminate patients with revised Task Force Criteria-diagnosed arrhythmogenic RV cardiomyopathy (ARVC) incremental to the existing cardiovascular magnetic resonance (CMR) criteria, thus improving the diagnostic yield of CMR in ARVC. METHODS AND RESULTS A total of 74 patients with revised Task Force Criteria-diagnosed ARVC (37 borderline and 37 definite) and 37 controls were retrospectively enrolled for analysis. Using CMR feature tracking, RV global longitudinal (GLS), circumferential, and radial strain of all participants were evaluated. Compared with controls, the study patients demonstrated significantly impaired global biventricular strain in all 3 directions (all P<0.001). Receiver operating characteristic curve analysis indicated that RV GLS was the strongest discriminator among all RV strain parameters for the identification of patients with ARVC (area under the curve, 0.92). Using the Youden index, the authors determined RV GLS ≥-19.95% as the diagnostic criterion of ARVC. In patients diagnosed with borderline ARVC according to revised Task Force Criteria but with no or only minor CMR criteria, there were >50% presenting with impaired RV GLS. When both conventional criteria and RV GLS were considered together, this new diagnostic method demonstrated an overall diagnostic accuracy of 90%. The likelihood ratio test showed a significant incremental diagnostic value of RV GLS (P=0.02) over the existing CMR major criteria. CONCLUSIONS The current study showed an improved diagnostic accuracy when both RV GLS and the existing CMR criteria were considered together, especially for patients with borderline diagnosis, suggesting the incremental value of strain analysis to the initial assessment of ARVC.
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Affiliation(s)
- Zhixiang Dong
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xuan Ma
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Jiaxin Wang
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Shujuan Yang
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Shiqin Yu
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yanyan Song
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Yun Tang
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xiaorui Xiang
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Kai Yang
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Kankan Zhao
- Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of SciencesSZ University TownShenzhenChina
| | - Minjie Lu
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xiuyu Chen
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Shihua Zhao
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, State Key Laboratory of Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
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Petersen SE, Muraru D, Westwood M, Dweck MR, Di Salvo G, Delgado V, Cosyns B. The year 2022 in the European Heart Journal-Cardiovascular Imaging: Part I. Eur Heart J Cardiovasc Imaging 2023; 24:1593-1604. [PMID: 37738411 DOI: 10.1093/ehjci/jead237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 09/13/2023] [Indexed: 09/24/2023] Open
Abstract
The European Heart Journal-Cardiovascular Imaging with its over 10 years existence is an established leading multi-modality cardiovascular imaging journal. Pertinent publications including original research, how-to papers, reviews, consensus documents, and in our journal from 2022 have been highlighted in two reports. Part I focuses on cardiomyopathies, heart failure, valvular heart disease, and congenital heart disease and related emerging techniques and technologies.
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Affiliation(s)
- Steffen E Petersen
- William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
- Barts Heart Centre, Barts Health NHS Trust, London, UK
| | - Denisa Muraru
- Department of cardiology, Istituto Auxologico Italiano, IRCCS, Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Mark Westwood
- William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
- Barts Heart Centre, Barts Health NHS Trust, London, UK
| | - Marc R Dweck
- BHF Centre for Cardiovascular Science, University of Edinburgh, Little France Crescent, Edinburgh EH16 4SB, UK
| | - Giovanni Di Salvo
- Pediatric Cardiology and Congenital Heart Disease Unit, Department of Women's and Children's Health, University Hospital Padua, Padua, Italy
| | - Victoria Delgado
- Cardiovascular Imaging, Department of Cardiology, Hospital University Germans Trias i Pujol, Badalona, Spain
- Centre de Medicina Comparativa i Bioimatge (CMCIB), Badalona, Spain
| | - Bernard Cosyns
- Department of Cardiology, CHVZ (Centrum voor Hart en Vaatziekten), ICMI (In Vivo Cellular and Molecular Imaging) Laboratory, Universitair Ziekenhuis Brussel, 101 Laarbeeklaan, Brussels 1090, Belgium
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Gasperetti A, James CA, Carrick RT, Protonotarios A, te Riele ASJM, Cadrin-Tourigny J, Compagnucci P, Duru F, van Tintelen P, Elliot PM, Calkins H. Arrhythmic risk stratification in arrhythmogenic right ventricular cardiomyopathy. Europace 2023; 25:euad312. [PMID: 37935403 PMCID: PMC10674106 DOI: 10.1093/europace/euad312] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 10/19/2023] [Indexed: 11/09/2023] Open
Abstract
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a heritable cardiomyopathy characterized by a predominantly arrhythmic presentation. It represents the leading cause of sudden cardiac death (SCD) among athletes and poses a significant morbidity threat in the general population. As a causative treatment for ARVC is still not available, the placement of an implantable cardioverter defibrillator represents the current cornerstone for SCD prevention in this setting. Thanks to international ARVC-dedicated efforts, significant steps have been achieved in recent years towards an individualized, patient-centred risk stratification approach. A novel risk calculator algorithm estimating the 5-year risk of arrhythmias of patients with ARVC has been introduced in clinical practice and subsequently validated. The purpose of this article is to summarize the body of evidence that has allowed the development of this tool and to discuss the best way to implement its use in the care of an individual patient.
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MESH Headings
- Humans
- Risk Factors
- Arrhythmogenic Right Ventricular Dysplasia/complications
- Arrhythmogenic Right Ventricular Dysplasia/diagnosis
- Arrhythmogenic Right Ventricular Dysplasia/therapy
- Death, Sudden, Cardiac/etiology
- Death, Sudden, Cardiac/prevention & control
- Death, Sudden, Cardiac/epidemiology
- Arrhythmias, Cardiac/diagnosis
- Arrhythmias, Cardiac/therapy
- Arrhythmias, Cardiac/complications
- Defibrillators, Implantable/adverse effects
- Risk Assessment
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Affiliation(s)
- Alessio Gasperetti
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Blalock 545, 600 N. Wolfe St., Baltimore, MD 21287, USA
- Department of Genetics, University Medical Center Utrecht, University of Utrecht, Heidelberglaan 100, Utrecht, The Netherlands
- Department of Medicine, Division of Cardiology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, Utrecht, Utrecht, The Netherlands
| | - Cynthia A James
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Blalock 545, 600 N. Wolfe St., Baltimore, MD 21287, USA
| | - Richard T Carrick
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Blalock 545, 600 N. Wolfe St., Baltimore, MD 21287, USA
| | | | - Anneline S J M te Riele
- Department of Medicine, Division of Cardiology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, Utrecht, Utrecht, The Netherlands
| | - Julia Cadrin-Tourigny
- Cardiovascular Genetics Center, Montreal Heart Institute, Université de Montréal, Montréal, QC, Canada
| | - Paolo Compagnucci
- Cardiology and Arrhythmology Clinic, Marche University Hospital, Ancona, Italy
| | - Firat Duru
- Department of Cardiology, Arrhythmia Unit, University Heart Center, University Hospital Zurich, Zurich, Switzerland
| | - Peter van Tintelen
- Department of Genetics, University Medical Center Utrecht, University of Utrecht, Heidelberglaan 100, Utrecht, The Netherlands
| | - Perry M Elliot
- Department of Cardiology, UCL Institute of Cardiovascular Science, London, UK
| | - Hugh Calkins
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Blalock 545, 600 N. Wolfe St., Baltimore, MD 21287, USA
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Vidal-Perez R, Brandão M, Zaher W, Casado-Arroyo R, Bouzas-Mosquera A, Fontes-Carvalho R, Vazquez-Rodriguez JM. Value of cardiac magnetic resonance on the risk stratification of cardiomyopathies. World J Cardiol 2023; 15:487-499. [PMID: 37900906 PMCID: PMC10600791 DOI: 10.4330/wjc.v15.i10.487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/18/2023] [Accepted: 09/27/2023] [Indexed: 10/24/2023] Open
Abstract
Cardiomyopathies represent a diverse group of heart muscle diseases with varying etiologies, presenting a diagnostic challenge due to their heterogeneous manifestations. Regular evaluation using cardiac imaging techniques is imperative as symptoms can evolve over time. These imaging approaches are pivotal for accurate diagnosis, treatment planning, and optimizing prognostic outcomes. Among these, cardiovascular magnetic resonance (CMR) stands out for its ability to provide precise anatomical and functional assessments. This manuscript explores the significant contributions of CMR in the diagnosis and management of patients with cardiomyopathies, with special attention to risk stratification. CMR's high spatial resolution and tissue characterization capabilities enable early detection and differentiation of various cardiomyopathy subtypes. Additionally, it offers valuable insights into myocardial fibrosis, tissue viability, and left ventricular function, crucial parameters for risk stratification and predicting adverse cardiac events. By integrating CMR into clinical practice, clinicians can tailor patient-specific treatment plans, implement timely interventions, and optimize long-term prognosis. The non-invasive nature of CMR reduces the need for invasive procedures, minimizing patient discomfort. This review highlights the vital role of CMR in monitoring disease progression, guiding treatment decisions, and identifying potential complications in patients with cardiomyopathies. The utilization of CMR has significantly advanced our understanding and management of these complex cardiac conditions, leading to improved patient outcomes and a more personalized approach to care.
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Affiliation(s)
- Rafael Vidal-Perez
- Servicio de Cardiología, Unidad de Imagen y Función Cardíaca, Complexo Hospitalario Universitario A Coruña Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), A Coruña 15006, Galicia, Spain.
| | - Mariana Brandão
- Department of Cardiology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia 4434-502, Portugal
| | - Wael Zaher
- Department of Cardiology, Hôpital Erasme, Université Libre de Bruxelles, Brussels 1070, Brussels, Belgium
| | - Ruben Casado-Arroyo
- Department of Cardiology, Hôpital Erasme, Université Libre de Bruxelles, Brussels 1070, Brussels, Belgium
| | - Alberto Bouzas-Mosquera
- Servicio de Cardiología, Unidad de Imagen y Función Cardíaca, Complexo Hospitalario Universitario A Coruña Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), A Coruña 15006, Galicia, Spain
| | - Ricardo Fontes-Carvalho
- Department of Cardiology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia 4434-502, Portugal
- Cardiovascular R&D Centre - UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, Porto 4200-319, Portugal
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Trancuccio A, Kukavica D, Sugamiele A, Mazzanti A, Priori SG. Prevention of Sudden Death and Management of Ventricular Arrhythmias in Arrhythmogenic Cardiomyopathy. Card Electrophysiol Clin 2023; 15:349-365. [PMID: 37558305 DOI: 10.1016/j.ccep.2023.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Arrhythmogenic cardiomyopathy is an umbrella term for a group of inherited diseases of the cardiac muscle characterized by progressive fibro-fatty replacement of the myocardium. As suggested by the name, the disease confers electrical instability to the heart and increases the risk of the development of life-threatening arrhythmias, representing one of the leading causes of sudden cardiac death (SCD), especially in young athletes. In this review, the authors review the current knowledge of the disease, highlighting the state-of-the-art approaches to the prevention of the occurrence of SCD.
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Affiliation(s)
- Alessandro Trancuccio
- Department of Molecular Medicine, University of Pavia, Pavia, Italy; Molecular Cardiology, IRCCS Istituti Clinici Scientifici Maugeri, Pavia, Italy
| | - Deni Kukavica
- Department of Molecular Medicine, University of Pavia, Pavia, Italy; Molecular Cardiology, IRCCS Istituti Clinici Scientifici Maugeri, Pavia, Italy
| | - Andrea Sugamiele
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Andrea Mazzanti
- Department of Molecular Medicine, University of Pavia, Pavia, Italy; Molecular Cardiology, IRCCS Istituti Clinici Scientifici Maugeri, Pavia, Italy
| | - Silvia G Priori
- Department of Molecular Medicine, University of Pavia, Pavia, Italy; Molecular Cardiology, IRCCS Istituti Clinici Scientifici Maugeri, Pavia, Italy.
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9
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Appadurai V, Safdur T, Narang A. Assessment of Right Ventricle Function and Tricuspid Regurgitation in Heart Failure: Current Advances in Diagnosis and Imaging. Heart Fail Clin 2023; 19:317-328. [PMID: 37230647 DOI: 10.1016/j.hfc.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Right ventricular (RV) systolic dysfunction increases mortality among heart failure patients, and therefore, accurate diagnosis and monitoring is paramount. RV anatomy and function are complex, usually requiring a combination of imaging modalities to completely quantitate volumes and function. Tricuspid regurgitation usually occurs with RV dysfunction, and quantifying this valvular lesion also may require multiple imaging modalities. Echocardiography is the first-line imaging tool for identifying RV dysfunction, with cardiac MRI and cardiac computed tomography adding valuable additional information.
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Affiliation(s)
- Vinesh Appadurai
- Bluhm Cardiovascular Institute, Northwestern University, 676 North St Clair Street Suite 19-100 Galter Pavilion, Chicago, IL 60611, USA; School of Medicine, The University of Queensland, St Lucia, QLD, 4067 Australia
| | - Taimur Safdur
- Bluhm Cardiovascular Institute, Northwestern University, 676 North St Clair Street Suite 19-100 Galter Pavilion, Chicago, IL 60611, USA
| | - Akhil Narang
- Bluhm Cardiovascular Institute, Northwestern University, 676 North St Clair Street Suite 19-100 Galter Pavilion, Chicago, IL 60611, USA.
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10
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Chen Z, Song Y, Chen L, Ma X, Dai Y, Zhao S, Chen K, Zhang S. Radial and Circumferential CMR-Based RV Strain Predicts Low R Wave Amplitude after ICD Implantation in Patients with Arrhythmogenic Cardiomyopathy. J Clin Med 2023; 12. [PMID: 36769534 DOI: 10.3390/jcm12030886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/16/2023] [Accepted: 01/20/2023] [Indexed: 01/25/2023] Open
Abstract
Inadequate R wave amplitude (RWA) after implantable cardiac defibrillator (ICD) implantation in patients with arrhythmogenic cardiomyopathy (ACM) was suspected to relate to right ventricle impairment. However, little data-based evidence was provided to quantify the association. We retrospectively enrolled ACM patients receiving CMR examinations before transvenous ICD implantation from Fuwai Hospital. The RWA was obtained within 24 h and at 2-6-month follow-up after the operation. Structural, functional, as well as tissue characterization of the left ventricle (LV) and right ventricle (RV), were analyzed in relation to RWA. Among the 87 ACM patients (median RWA: 8.0 mV), 19 (21.8%) patients were found with low initial RWA (<5 mV) despite attempts in multiple positions. RV end diastolic diameter (RVEDD), (r = -0.44), RV ejection fraction (RVEF, r = 0.43), RV end diastolic volume index (RVEDVi, r = -0.49), RV end systolic volume index (RVESVi, r = -0.53), RV global circumferential (RVGCS, r = -0.64), and radial strain (RVGRS, r = 0.61, all p < 0.001) rather than LV metrics correlated strongly with initial RWA. RVGCS, RVESVi, and RVGRS were decent predictors of low RWA (areas under the curve AUC: 0.814, 0.769, 0.757, respectively) early after implantation and during 2-6-month follow-up. To summarize, low RWA of ICD lead in ACM patients was associated with RV abnormalities. The RVGCS, RVGRS, and RVESVi can be valuable predictors for identifying low RWA prior to ICD implantation.
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11
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Boonstra M, Kloosterman M, van der Schaaf I, Roudijk R, van Dam P, Loh P. ECG-based techniques to enhance clinical practice in cardiac genetic disease management. J Electrocardiol 2023; 76:55-60. [PMID: 36436475 DOI: 10.1016/j.jelectrocard.2022.10.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 10/10/2022] [Accepted: 10/22/2022] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Inherited cardiomyopathies are associated with a broad spectrum of potentially lethal phenotypes characterized by structural and electrical myocardial remodeling. Increased awareness and genetic cascade screening lead to more genotype-positive, yet phenotype-negative individuals to be evaluated and followed up. The predictive value of genetic testing is hampered by incomplete penetrance and high variability in disease onset, progression and severity. CLINICAL CHALLENGES Dilated cardiomyopathy usually manifests with symptoms of heart failure and ventricular arrhythmias (VA) develop in advanced disease. In arrhythmogenic cardiomyopathy (ACM), electrical remodeling can precede structural and functional changes and life-threatening VA can be the first disease manifestation. Early signs and symptoms may be subtle and go unnoticed. Physicians are in great need of appropriate screening and risk-stratification strategies. Task Force Criteria (TFC) were established to standardize the clinical diagnosis of ACM but risk-stratification remains challenging. Accurate prediction of disease progression in variation carriers is currently beyond the capabilities of diagnostic tests. PROPOSED DIAGNOSTIC TECHNIQUES We propose three ECG-based techniques; isopotential mapping, inverse ECG and CineECG, to enhance risk-stratification in ACM. With the use of isopotential mapping abnormal spatio-temporal activation and repolarization may be identified. Furthermore, by combining subject specific ≥12‑lead ECG data with cardiothoracic imaging using inverse ECG techniques, the direct link between ECG and cardiac anatomy can be obtained. CONCLUSION New ECG techniques may prove more sensitive to detect early de- and repolarization abnormalities in yet asymptomatic variation carriers. Early electrical signs of disease progression may be identified prior to symptoms. Furthermore, individualized risk-stratification may be enhanced.
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Affiliation(s)
- Machteld Boonstra
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Manon Kloosterman
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Iris van der Schaaf
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Rob Roudijk
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands; Netherlands Heart Institute, Utrecht, the Netherlands
| | - Peter van Dam
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Peter Loh
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
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12
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Rolf A, Keller T, Wolter JS, Kriechbaum S, Weferling M, Guth S, Wiedenroth C, Mayer E, Hamm CW, Fischer-Rasokat U, Treiber J. Right Ventricular Strain by Magnetic Resonance Feature Tracking Is Largely Afterload-Dependent and Does Not Reflect Contractility: Validation by Combined Volumetry and Invasive Pressure Tracings. Diagnostics (Basel) 2022; 12:diagnostics12123183. [PMID: 36553190 PMCID: PMC9777736 DOI: 10.3390/diagnostics12123183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/05/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Cardiac magnetic resonance (CMR) is currently the gold standard for evaluating right ventricular (RV) function, which is critical in patients with pulmonary hypertension. CMR feature-tracking (FT) strain analysis has emerged as a technique to detect subtle changes. However, the dependence of RV strain on load is still a matter of debate. The aim of this study was to measure the afterload dependence of RV strain and to correlate it with surrogate markers of contractility in a cohort of patients with chronic thromboembolic pulmonary hypertension (CTEPH) under two different loading conditions before and after pulmonary endarterectomy (PEA). Between 2009 and 2022, 496 patients with 601 CMR examinations were retrospectively identified from our CTEPH cohort, and the results of 194 examinations with right heart catheterization within 24 h were available. The CMR FT strain (longitudinal (GLS) and circumferential (GCS)) was computed on steady-state free precession (SSFP) cine CMR sequences. The effective pulmonary arterial elastance (Ea) and RV chamber elastance (Ees) were approximated by dividing mean pulmonary arterial pressure by the indexed stroke volume or end-systolic volume, respectively. GLS and GCS correlated significantly with Ea and Ees/Ea in the overall cohort and individually before and after PEA. There was no general correlation with Ees; however, under high afterload, before PEA, Ees correlated significantly. The results show that RV GLS and GCS are highly afterload-dependent and reflect ventriculoarterial coupling. Ees was significantly correlated with strain only under high loading conditions, which probably reflects contractile adaptation to pulsatile load rather than contractility in general.
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Affiliation(s)
- Andreas Rolf
- Kerckhoff Heart and Thorax Center, Department of Cardiology, Benekestr. 2-8, 61231 Bad Nauheim, Germany
- Medical Clinic I, Department of Cardiology, University of Giessen, 35390 Giessen, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, 61231 Bad Nauheim, Germany
- Correspondence: ; Tel.: +49-6032-996-2620
| | - Till Keller
- Kerckhoff Heart and Thorax Center, Department of Cardiology, Benekestr. 2-8, 61231 Bad Nauheim, Germany
- Medical Clinic I, Department of Cardiology, University of Giessen, 35390 Giessen, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, 61231 Bad Nauheim, Germany
| | - Jan Sebastian Wolter
- Kerckhoff Heart and Thorax Center, Department of Cardiology, Benekestr. 2-8, 61231 Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, 61231 Bad Nauheim, Germany
| | - Steffen Kriechbaum
- Kerckhoff Heart and Thorax Center, Department of Cardiology, Benekestr. 2-8, 61231 Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, 61231 Bad Nauheim, Germany
| | - Maren Weferling
- Kerckhoff Heart and Thorax Center, Department of Cardiology, Benekestr. 2-8, 61231 Bad Nauheim, Germany
| | - Stefan Guth
- Kerckhoff Heart and Thorax Center, Department of Thoracic Surgery, 61231 Bad Nauheim, Germany
| | - Christoph Wiedenroth
- Kerckhoff Heart and Thorax Center, Department of Thoracic Surgery, 61231 Bad Nauheim, Germany
| | - Eckhard Mayer
- Kerckhoff Heart and Thorax Center, Department of Thoracic Surgery, 61231 Bad Nauheim, Germany
| | - Christian W. Hamm
- Kerckhoff Heart and Thorax Center, Department of Cardiology, Benekestr. 2-8, 61231 Bad Nauheim, Germany
- Medical Clinic I, Department of Cardiology, University of Giessen, 35390 Giessen, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, 61231 Bad Nauheim, Germany
| | - Ulrich Fischer-Rasokat
- Kerckhoff Heart and Thorax Center, Department of Cardiology, Benekestr. 2-8, 61231 Bad Nauheim, Germany
| | - Julia Treiber
- Kerckhoff Heart and Thorax Center, Department of Cardiology, Benekestr. 2-8, 61231 Bad Nauheim, Germany
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13
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Carrick RT, Te Riele ASJM, Gasperetti A, Bosman L, Muller SA, Pendleton C, Tichnell C, Murray B, Yap SC, van den Berg MP, Wilde A, Zeppenfeld K, Hays A, Zimmerman SL, Tandri H, Cadrin-Tourigny J, van Tintelen P, Calkins H, James CA, Wu KC. Longitudinal Prediction of Ventricular Arrhythmic Risk in Patients With Arrhythmogenic Right Ventricular Cardiomyopathy. Circ Arrhythm Electrophysiol 2022; 15:e011207. [PMID: 36315818 PMCID: PMC9669260 DOI: 10.1161/circep.122.011207] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND The arrhythmogenic right ventricular cardiomyopathy (ARVC) risk calculator stratifies risk for incident sustained ventricular arrhythmias (VA) at the time of ARVC diagnosis. However, included risk factors change over time, and how well the ARVC risk calculator performs at follow-up is unknown. METHODS This was a retrospective analysis of patients with definite ARVC and without prior sustained VA. Risk factors for VA including age, nonsustained ventricular tachycardia, premature ventricular complex burden, T-wave inversions on electrocardiogram, cardiac syncope, right ventricular function, therapeutic medication use, and exercise intensity were assessed at the time of 2010 Task Force Criteria based ARVC diagnosis and upon repeat evaluations. Changes in these risk factors were analyzed over 5-year follow-up. The 5-year risk of VA was predicted longitudinally using (1) the baseline ARVC risk calculator prediction, (2) the ARVC risk prediction calculated using updated risk factors, and (3) time-varying Cox regression. Discrimination and calibration were assessed in comparison to observed VA event rates. RESULTS Four hundred eight patients with ARVC experiencing 132 primary VA events were included. Matched comparison of risk factors at baseline versus at 5 years of follow-up revealed decreased burdens of premature ventricular complexes (-1200/day) and nonsustained ventricular tachycardia (-14%). Presence of significant right ventricular dysfunction and number of T-wave inversions on electrocardiogram were unchanged. Observed risk for VA decreased by 13% by 5 years follow-up. The baseline ARVC risk calculator's ability to predict 5-year VA risk worsened during follow-up (C statistics, 0.83 at diagnosis versus 0.68 at 5 years). Both the updated ARVC risk calculator (C statistics of 0.77) and time-varying Cox regression model (C statistics, 0.77) had strong discrimination. The updated ARVC risk calculator overestimated 5-year VA risk by an average of +6%. CONCLUSIONS Risk factors for VA in ARVC are dynamic, and overall risk for incident sustained VA decreases during follow-up. Up-to-date risk factor assessment improves VA risk stratification.
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Affiliation(s)
- Richard T Carrick
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | - Anneline S J M Te Riele
- Division of Cardiology, Department of Heart & Lungs (A.G., A.S.J.M.t.R., L.B., S.A.M.), University Medical Center Utrecht, the Netherlands
- Member of the European Network for Rare, Low Prevalence and Complex Diseases of the Heart: ERN GUARD-Heart' Academic Medical Center' Amsterdam' the Netherlands (A.S.J.M.t.R., S.-C.Y.)
| | - Alessio Gasperetti
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
- Division of Cardiology, Department of Heart & Lungs (A.G., A.S.J.M.t.R., L.B., S.A.M.), University Medical Center Utrecht, the Netherlands
| | - Laurens Bosman
- Division of Cardiology, Department of Heart & Lungs (A.G., A.S.J.M.t.R., L.B., S.A.M.), University Medical Center Utrecht, the Netherlands
| | - Steven A Muller
- Division of Cardiology, Department of Heart & Lungs (A.G., A.S.J.M.t.R., L.B., S.A.M.), University Medical Center Utrecht, the Netherlands
| | - Catherine Pendleton
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | - Crystal Tichnell
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | - Brittney Murray
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | - Sing-Chien Yap
- Member of the European Network for Rare, Low Prevalence and Complex Diseases of the Heart: ERN GUARD-Heart' Academic Medical Center' Amsterdam' the Netherlands (A.S.J.M.t.R., S.-C.Y.)
- Erasmus MC, University Medical Center Rotterdam, the Netherlands (S.C.Y., A.W., P.v.T.)
| | - Maarten P van den Berg
- Department of Cardiology, University Medical Center Groningen, University of Groningen, the Netherlands (M.P.v.d.B.)
| | - Arthur Wilde
- Erasmus MC, University Medical Center Rotterdam, the Netherlands (S.C.Y., A.W., P.v.T.)
- Amsterdam University Medical Center, Amsterdam Cardiovascular Sciences, Heart Failure & Arrhythmias, the Netherlands (A.W.)
| | | | - Allison Hays
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | - Stefan L Zimmerman
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | - Harikrishna Tandri
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | | | - Peter van Tintelen
- Department of Clinical Genetics (P.v.T.), University Medical Center Utrecht, the Netherlands
- Erasmus MC, University Medical Center Rotterdam, the Netherlands (S.C.Y., A.W., P.v.T.)
| | - Hugh Calkins
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | - Cynthia A James
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
| | - Katherine C Wu
- Division of Cardiology, Johns Hopkins Medical Institute, Baltimore, MD (R.T.C., A.G., C.P., C.T., B.M., A.H., S.L.Z., H.T., H.C., C.A.J., K.C.W.)
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