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Winsløw U, Sakthivel T, Zheng C, Philbert B, Vinther M, Frandsen E, Iversen K, Bundgaard H, Jøns C, Risum N. The effect of increased plasma potassium on myocardial function; a randomized POTCAST substudy. Int J Cardiovasc Imaging 2023; 39:2097-2106. [PMID: 37470856 PMCID: PMC10673982 DOI: 10.1007/s10554-023-02914-x] [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: 02/05/2023] [Accepted: 06/30/2023] [Indexed: 07/21/2023]
Abstract
Plasma potassium (p-K) in the high-normal range has been suggested to reduce risk of cardiovascular arrythmias and mortality through electrophysiological and mechanical effects on the myocardium. In this study, it was to investigated if increasing p-K to high-normal levels improves systolic- and diastolic myocardial function in patients with low-normal to moderately reduced left ventricular ejection fraction (LVEF). The study included 50 patients (mean age 58 years (SD 14), 81% men), with a mean p-K 3.95 mmol/l (SD 0.19), mean LVEF 48% (SD 7), and mean Global Longitudinal Strain (GLS) -14.6% (SD 3.1) patients with LVEF 35-55% from "Targeted potassium levels to decrease arrhythmia burden in high-risk patients with cardiovascular diseases trial" (POTCAST). Patients were given standard therapy and randomized (1:1) to an intervention that included guidance on potassium-rich diets, potassium supplements, and mineralocorticoid receptor antagonists targeting high-normal p-K levels (4.5-5.0 mmol/l). Echocardiography was done at baseline and after a mean follow-up of 44 days (SD 18) and the echocardiograms were analyzed for changes in GLS, mechanical dispersion, E/A, e', and E/e'. At follow-up, mean difference in changes in p-K was 0.52 mmol/l (95%CI 0.35;0.69), P<0.001 in the intervention group compared to controls. GLS was improved with a mean difference in changes of -1.0% (-2;-0.02), P<0.05 and e' and E/e' were improved with a mean difference in changes of 0.9 cm/s (0.02;1.7), P = 0.04 and ? 1.5 (-2.9;-0.14), P = 0.03, respectively. Thus, induced increase in p-K to the high-normal range improved indices of systolic and diastolic function in patients with low-normal to moderately reduced LVEF.
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Affiliation(s)
- Ulrik Winsløw
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark.
| | - Tharsika Sakthivel
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Chaoqun Zheng
- Department of Cardiology, Zealand University Hospital, Roskilde, Denmark
| | - Berit Philbert
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Michael Vinther
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Emil Frandsen
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Kasper Iversen
- Department of Cardiology, Copenhagen University Hospital, Herlev-Gentofte, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Henning Bundgaard
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Christian Jøns
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Niels Risum
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
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d'Humières T, Saba J, Savale L, Dupuy M, Boyer L, Guillet H, Alassaad L, de Luna G, Iles S, Pham Hung d'Alexandry d'Orengiani AL, Zaouali Y, Boukour N, Pelinski Y, Messonnier L, Audureau E, Derbel H, Habibi A, Lellouche N, Derumeaux G, Bartolucci P. Determinants of ventricular arrhythmias in sickle cell anemia: toward better prevention of sudden cardiac death. Blood 2023; 142:409-420. [PMID: 37216685 DOI: 10.1182/blood.2022019571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/24/2023] Open
Abstract
Sudden death is 1 of the leading causes of death in adults with sickle cell anemia (SCA) but its etiology remains mostly unknown. Ventricular arrhythmia (VA) carries an increased risk of sudden death; however, its prevalence and determinants in SCA are poorly studied. This study aimed to identify the prevalence and predictors of VA in patients with SCA. From 2019 to 2022, 100 patients with SCA were referred to the physiology department to specifically analyze cardiac function and prospectively included in the DREPACOEUR registry. They underwent a 24-hour electrocardiogram monitoring (24h-Holter), transthoracic echocardiography, and laboratory tests on the same day. The primary end point was the occurrence of VA, defined as sustained or nonsustained ventricular tachycardia (VT), >500 premature ventricular contractions (PVCs) on 24h-Holter, or a recent history of VT ablation. The mean patient age was 46 ± 13 years, and 48% of the patients were male. Overall, VA was observed in 22 (22%) patients. Male sex (81% vs 34%; P = .02), impaired global longitudinal strain (GLS): -16% ± 1.9% vs -18.3% ± 2.7%; P = .02), and decreased platelet count (226 ± 96 giga per liter [G/L] vs 316 ± 130 G/L) were independently associated with VA. GLS correlated with PVC load every 24 hours (r = 0.39; P < .001) and a cutoff of -17.5% could predict VA with a sensitivity of 82% and a specificity of 63%. VAs are common in patients with SCA, especially in men. This pilot study uncovered GLS as a valuable parameter for improving rhythmic risk stratification.
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MESH Headings
- Adult
- Humans
- Male
- Middle Aged
- Female
- Pilot Projects
- Arrhythmias, Cardiac/etiology
- Death, Sudden, Cardiac/epidemiology
- Death, Sudden, Cardiac/etiology
- Death, Sudden, Cardiac/prevention & control
- Tachycardia, Ventricular/diagnosis
- Tachycardia, Ventricular/etiology
- Anemia, Sickle Cell/complications
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Affiliation(s)
- Thomas d'Humières
- Department of Physiology, FHU SENEC, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, INSERM IMRB U955, Université Paris Est, Créteil, France
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
| | - Joseph Saba
- Department of Physiology, FHU SENEC, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, INSERM IMRB U955, Université Paris Est, Créteil, France
| | - Laurent Savale
- Department of Respiratory and Intensive Care Medicine, Pulmonary Hypertension National Referral Center, Hôpital Bicêtre, Assistance Publique Hôpitaux de Paris, Université Paris-Saclay, School of Medicine, Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 Pulmonary Hypertension, Pathophysiology and Novel Therapies, Hôpital Marie Lannelongue, Le Plessis-Robinson, France
| | - Marie Dupuy
- Department of Physiology, FHU SENEC, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, INSERM IMRB U955, Université Paris Est, Créteil, France
| | - Laurent Boyer
- Department of Physiology, FHU SENEC, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, INSERM IMRB U955, Université Paris Est, Créteil, France
| | - Henri Guillet
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
- Department of Internal Medicine, Henri-Mondor University Hospital-UPEC, Assistance Publique-Hôpitaux de Paris, Créteil, France
| | - Lara Alassaad
- Department of Physiology, FHU SENEC, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, INSERM IMRB U955, Université Paris Est, Créteil, France
| | - Gonzalo de Luna
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
- Department of Internal Medicine, Henri-Mondor University Hospital-UPEC, Assistance Publique-Hôpitaux de Paris, Créteil, France
| | - Sihem Iles
- Department of Physiology, FHU SENEC, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, INSERM IMRB U955, Université Paris Est, Créteil, France
| | - Anne L Pham Hung d'Alexandry d'Orengiani
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
| | - Yosr Zaouali
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
| | - Nouhaila Boukour
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
| | - Yanis Pelinski
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
| | - Laurent Messonnier
- Inter-university Laboratory of Human Movement Sciences EA 7424, Université Savoie Mont Blanc, Chambéry, France
| | - Etienne Audureau
- Department of Biostatistics, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, CEpiA IMRB U955, FHU SENEC, Université Paris Est, Créteil, France
| | - Haytham Derbel
- Department of Radiology, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, Université Paris Est, Créteil, France
| | - Anoosha Habibi
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
- Department of Internal Medicine, Henri-Mondor University Hospital-UPEC, Assistance Publique-Hôpitaux de Paris, Créteil, France
| | - Nicolas Lellouche
- Department of Cardiology, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, Université Paris Est, Créteil, France
| | - Geneviève Derumeaux
- Department of Physiology, FHU SENEC, Henri Mondor Hospital, Assistance Publique Hôpitaux de Paris, INSERM IMRB U955, Université Paris Est, Créteil, France
| | - Pablo Bartolucci
- Sickle Cell Referral Center - UMGGR, Plateforme d'expertise Maladies Rares Grand Paris Est, Université Paris Est, FHU SENEC, CHU Henri Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
- Department of Internal Medicine, Henri-Mondor University Hospital-UPEC, Assistance Publique-Hôpitaux de Paris, Créteil, France
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Bjerregaard CL, Skaarup KG, Lassen MCH, Biering-Sørensen T, Olsen FJ. Strain Imaging and Ventricular Arrhythmia. Diagnostics (Basel) 2023; 13:diagnostics13101778. [PMID: 37238262 DOI: 10.3390/diagnostics13101778] [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: 04/08/2023] [Revised: 05/11/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023] Open
Abstract
Ventricular arrhythmia is one of the main causes of sudden cardiac death. Hence, identifying patients at risk of ventricular arrhythmias and sudden cardiac death is important but can be challenging. The indication for an implantable cardioverter defibrillator as a primary preventive strategy relies on the left ventricular ejection fraction as a measure of systolic function. However, ejection fraction is flawed by technical constraints and is an indirect measure of systolic function. There has, therefore, been an incentive to identify other markers to optimize the risk prediction of malignant arrhythmias to select proper candidates who could benefit from an implantable cardioverter defibrillator. Speckle-tracking echocardiography allows for a detailed assessment of cardiac mechanics, and strain imaging has repeatedly been shown to be a sensitive technique to identify systolic dysfunction unrecognized by ejection fraction. Several strain measures, including global longitudinal strain, regional strain, and mechanical dispersion, have consequently been proposed as potential markers of ventricular arrhythmias. In this review, we will provide an overview of the potential use of different strain measures in the context of ventricular arrhythmias.
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Affiliation(s)
- Caroline Løkke Bjerregaard
- Department of Cardiology, Copenhagen University Hospital-Herlev and Gentofte, 2900 Hellerup, Denmark
- Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Kristoffer Grundtvig Skaarup
- Department of Cardiology, Copenhagen University Hospital-Herlev and Gentofte, 2900 Hellerup, Denmark
- Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Mats Christian Højbjerg Lassen
- Department of Cardiology, Copenhagen University Hospital-Herlev and Gentofte, 2900 Hellerup, Denmark
- Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Tor Biering-Sørensen
- Department of Cardiology, Copenhagen University Hospital-Herlev and Gentofte, 2900 Hellerup, Denmark
- Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Flemming Javier Olsen
- Department of Cardiology, Copenhagen University Hospital-Herlev and Gentofte, 2900 Hellerup, Denmark
- Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
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D’Andrea A, Ilardi F, Palermi S, Riegler L, Miele T, Giallauria F, D’Alto M, Russo V, Cice G. Multimodality imaging in decompensated heart failure. Eur Heart J Suppl 2023; 25:C292-C300. [PMID: 37125293 PMCID: PMC10132613 DOI: 10.1093/eurheartjsupp/suad052] [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] [Indexed: 05/02/2023]
Abstract
Heart failure (HF) is usually suspected by clinical history, symptoms, physical examination, electrocardiogram findings, and natriuretic peptides' values. However, echocardiography and other imaging techniques play an essential role in supporting HF diagnosis. Thanks to its non-invasiveness and safety, transthoracic echocardiography is the first-level technique of choice to assess myocardial structure and function, trying to establish the diagnosis of HF with reduced, mildly reduced, and preserved ejection fraction. The role of echocardiography is not limited to diagnosis but it represents a crucial tool in guiding therapeutic decision-making and monitoring response to therapy. Over the last decades, several technological advancements were made in the imaging field, aiming at better understanding the morphofunctional abnormalities occurring in cardiovascular diseases. The purpose of this review article is to summarize the incremental role of imaging techniques (in particular cardiac magnetic resonance and myocardial scintigraphy) in HF, highlighting their essential applications to HF diagnosis and management.
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Affiliation(s)
- Antonello D’Andrea
- Corresponding author. Department of Translational Medical Sciences, Unit of Cardiology, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, 80131 Naples, Italy; Unit of Cardiology and Intensive Coronary Care, “Umberto I” Hospital, 84014 Nocera Inferiore, Italy.
| | - Federica Ilardi
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
- Public Health Department, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
| | - Stefano Palermi
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
| | - Lucia Riegler
- Department of Cardiology, Umberto I Hospital, Via Alfonso de Nicola, 84014 Nocera Inferiore, Italy
| | - Tiziana Miele
- Unit of Cardiology, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, Via Leonardo Bianchi, 80131 Naples, Italy
| | - Francesco Giallauria
- Unit of Cardiology, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, Via Leonardo Bianchi, 80131 Naples, Italy
| | - Michele D’Alto
- Unit of Cardiology, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, Via Leonardo Bianchi, 80131 Naples, Italy
| | - Vincenzo Russo
- Unit of Cardiology, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, Via Leonardo Bianchi, 80131 Naples, Italy
| | - Gennaro Cice
- Department of Cardiology, Policlinico Casilino, Via Casilina, 1049, 00169 Rome
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Longitudinal Speckle Tracking Strain Abnormalities in Chagas Disease: A Systematic Review and Meta-Analysis. J Clin Med 2022; 11:jcm11030769. [PMID: 35160221 PMCID: PMC8846382 DOI: 10.3390/jcm11030769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/27/2022] [Accepted: 01/29/2022] [Indexed: 02/04/2023] Open
Abstract
Background: Chronic Chagas cardiomyopathy (CCM) is ranked among heart failure etiologies with the highest mortality rates. CCM is characterized by alterations in left ventricular function with a typical and unique pattern of myocardial involvement. Left ventricle longitudinal speckle tracking strain is emerging as an important additive method for evaluating left ventricular function and risk of future cardiovascular events. This systematic review aimed to characterize the left ventricle (LV) longitudinal strain by speckle tracking patterns in the different stages of Chagas disease, compared to healthy controls. Methods: Searches in Medline, EMBASE, and LILACS databases (from inception to 20 May 2021) were performed. Articles written in any language that assessed patients with Chagas disease and reported any measures derived from the left ventricular strain by speckle tracking were included. Two reviewers independently selected the studies, extracted the data, and assessed the quality of evidence. Standardized mean differences (SMD) were pooled using random-effects meta-analyses. Results: Of 1044 references, ten studies, including a total of 1222 participants (CCM: 477; indeterminate form: 444; healthy controls: 301), fulfilled the selection criteria and were included in the final analysis. Patients with CCM had a significantly higher mean global longitudinal strain (GLS) value than indeterminate form (IF) patients (SMD 1.253; 95% CI 0.53, 1.98. I2 = 94%), while no significant difference was observed between IF patients and healthy controls (SMD 0.197; 95% CI −0.19, 0.59. I2 = 80%). Segmental strain analyses revealed that patients with the IF form of CD had significantly worse strain values in the basal-inferoseptal (SMD 0.49; 95% CI 0.24, 0.74. I2: 24%), and mid-inferoseptal (SMD 0.28; 95% CI 0.05, 0.50. I2: 10%) segments compared to healthy controls. Conclusions: Our results suggest different levels of functional derangements in myocardial function across different stages of Chagas disease. Further research is needed to assess the prognostic role of LV longitudinal strain and other measures derived from speckle tracking in CD patients regarding progression to cardiomyopathy and clinical outcomes prediction.
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Kar J, Cohen MV, McQuiston SA, Poorsala T, Malozzi CM. Direct left-ventricular global longitudinal strain (GLS) computation with a fully convolutional network. J Biomech 2022; 130:110878. [PMID: 34871894 PMCID: PMC8896910 DOI: 10.1016/j.jbiomech.2021.110878] [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: 09/15/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 01/03/2023]
Abstract
This study's purpose was to develop a direct MRI-based, deep-learning semantic segmentation approach for computing global longitudinal strain (GLS), a known metric for detecting left-ventricular (LV) cardiotoxicity in breast cancer. Displacement Encoding with Stimulated Echoes cardiac image phases acquired from 30 breast cancer patients and 30 healthy females were unwrapped via a DeepLabV3 + fully convolutional network (FCN). Myocardial strains were directly computed from the unwrapped phases with the Radial Point Interpolation Method. FCN-unwrapped phases of a phantom's rotating gel were validated against quality-guided phase-unwrapping (QGPU) and robust transport of intensity equation (RTIE) phase-unwrapping. FCN performance on unwrapping human LV data was measured with F1 and Dice scores versus QGPU ground-truth. The reliability of FCN-based strains was assessed against RTIE-based strains with Cronbach's alpha (C-α) intraclass correlation coefficient. Mean squared error (MSE) of unwrapping the phantom experiment data at 0 dB signal-to-noise ratio were 1.6, 2.7 and 6.1 with FCN, QGPU and RTIE techniques. Human data classification accuracies were F1 = 0.95 (Dice = 0.96) with FCN and F1 = 0.94 (Dice = 0.95) with RTIE. GLS results from FCN and RTIE were -16 ± 3% vs. -16 ± 3% (C-α = 0.9) for patients and -20 ± 3% vs. -20 ± 3% (C-α = 0.9) for healthy subjects. The low MSE from the phantom validation demonstrates accuracy of phase-unwrapping with the FCN and comparable human subject results versus RTIE demonstrate GLS analysis accuracy. A deep-learning methodology for phase-unwrapping in medical images and GLS computation was developed and validated in a heterogeneous cohort.
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Affiliation(s)
- Julia Kar
- Departments of Mechanical Engineering and Pharmacology University of South Alabama 150 Jaguar Drive, Mobile, AL 36688 Phone: 251 460 7456
| | - Michael V. Cohen
- Department of Cardiology College of Medicine University of South Alabama 1700 Center Street, Mobile, AL 36604
| | - Samuel A. McQuiston
- Department of Radiology University of South Alabama 2451 USA Medical Center Drive, Mobile, AL 36617
| | - Teja Poorsala
- Departments of Oncology and Hematology University of South Alabama 101 Memorial Hospital Drive, Building 3 Mobile, AL 36608
| | - Christopher M. Malozzi
- Department of Cardiology College of Medicine University of South Alabama 1700 Center Street, Mobile, AL 36604
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Echocardiographic Advances in Dilated Cardiomyopathy. J Clin Med 2021; 10:jcm10235518. [PMID: 34884220 PMCID: PMC8658091 DOI: 10.3390/jcm10235518] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/05/2021] [Accepted: 11/23/2021] [Indexed: 12/29/2022] Open
Abstract
Although the overall survival of patients with dilated cardiomyopathy (DCM) has improved significantly in the last decades, a non-negligible proportion of DCM patients still shows an unfavorable prognosis. DCM patients not only need imaging techniques that are effective in diagnosis, but also suitable for long-term follow-up with frequent re-evaluations. The exponential growth of echocardiography’s technology and performance in recent years has resulted in improved diagnostic accuracy, stratification, management and follow-up of patients with DCM. This review summarizes some new developments in echocardiography and their promising applications in DCM. Although nowadays cardiac magnetic resonance (CMR) remains the gold standard technique in DCM, the echocardiographic advances and novelties proposed in the manuscript, if properly integrated into clinical practice, could bring echocardiography closer to CMR in terms of accuracy and may certify ultrasound as the technique of choice in the follow-up of DCM patients. The application in DCM patients of novel echocardiographic techniques represents an interesting emergent research area for scholars in the near future.
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CMR-Based Risk Stratification of Sudden Cardiac Death and Use of Implantable Cardioverter-Defibrillator in Non-Ischemic Cardiomyopathy. Int J Mol Sci 2021; 22:ijms22137115. [PMID: 34281168 PMCID: PMC8268120 DOI: 10.3390/ijms22137115] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/27/2021] [Accepted: 06/29/2021] [Indexed: 01/04/2023] Open
Abstract
Non-ischemic cardiomyopathy (NICM) is one of the most important entities for arrhythmias and sudden cardiac death (SCD). Previous studies suggest a lower benefit of implantable cardioverter–defibrillator (ICD) therapy in patients with NICM as compared to ischemic cardiomyopathy (ICM). Nevertheless, current guidelines do not differentiate between the two subgroups in recommending ICD implantation. Hence, risk stratification is required to determine the subgroup of patients with NICM who will likely benefit from ICD therapy. Various predictors have been proposed, among others genetic mutations, left-ventricular ejection fraction (LVEF), left-ventricular end-diastolic volume (LVEDD), and T-wave alternans (TWA). In addition to these parameters, cardiovascular magnetic resonance imaging (CMR) has the potential to further improve risk stratification. CMR allows the comprehensive analysis of cardiac function and myocardial tissue composition. A range of CMR parameters have been associated with SCD. Applicable examples include late gadolinium enhancement (LGE), T1 relaxation times, and myocardial strain. This review evaluates the epidemiological aspects of SCD in NICM, the role of CMR for risk stratification, and resulting indications for ICD implantation.
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Left Ventricular Deformation and Vortex Analysis in Heart Failure: From Ultrasound Technique to Current Clinical Application. Diagnostics (Basel) 2021; 11:diagnostics11050892. [PMID: 34067703 PMCID: PMC8156791 DOI: 10.3390/diagnostics11050892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/03/2021] [Accepted: 05/13/2021] [Indexed: 02/07/2023] Open
Abstract
Heart failure (HF) is a leading cause of cardiovascular morbidity and mortality. However, its symptoms and signs are not specific or can be absent. In this context, transthoracic echocardiography plays a key role in diagnosing the various forms of HF, guiding therapeutic decision making and monitoring response to therapy. Over the last few decades, new ultrasound modalities have been introduced in the field of echocardiography, aiming at better understanding the morpho-functional abnormalities occurring in cardiovascular diseases. However, they are still struggling to enter daily and routine use. In our review article, we turn the spotlight on some of the newest ultrasound technologies; in particular, analysis of myocardial deformation by speckle tracking echocardiography, and intracardiac flow dynamics by color Doppler flow mapping, highlighting their promising applications to HF diagnosis and management. We also focus on the importance of these imaging modalities in the selection of responses to cardiac resynchronization therapy.
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Nikoo MH, Naeemi R, Moaref A, Attar A. Global longitudinal strain for prediction of ventricular arrhythmia in patients with heart failure. ESC Heart Fail 2020; 7:2956-2961. [PMID: 32710602 PMCID: PMC7524120 DOI: 10.1002/ehf2.12910] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 05/08/2020] [Accepted: 07/02/2020] [Indexed: 12/11/2022] Open
Abstract
AIMS Currently, the ejection fraction [left ventricular ejection fraction (LVEF)] is the main criterion used for implanting implantable cardioverter defibrillators (ICDs) for primary prevention. However, many of ICD receivers would not have an event and do not have any gains from the device. Consequently, improving the discrimination strategies is needed. Here, we aimed at assessing the role of global longitudinal strain (GLS) for such purpose. METHODS AND RESULTS Seventy ischaemic or dilated cardiomyopathy cases characterized by LVEF ≤ 40% with a previously implanted ICD were enrolled. LVEF and GLS amounts were evaluated using 3D echocardiography. The occurrence of ventricular arrhythmias was checked by analysing the ICD history. Mean follow-up period of patients was 1.8 ± 0.6 years. There was a significant difference in the amount of GLS in arrhythmic cases compared with non-arrhythmic ones (-6.97 ± 3.06 vs -11.82 ± 4.25; P < 0.001). This difference was found in both ischaemic and dilated cardiomyopathy groups. A GLS below -10 cm/s could predict the occurrence of a ventricular event by 90% specificity and 72.2% sensitivity (area under the curve = 0.84, P < 0.001). While 27.39 (69.2%) patients with GLS below -10 cm/s had a ventricular event, only 3.31 (9.6%) of the patients with GLS above -10 had an event) P < 0.001). Those patients with a GLS ≥ 17 cm/s never experienced a ventricular arrhythmia. CONCLUSIONS Global longitudinal strain is a more accurate predictor of ventricular arrhythmias in patients with reduced LVEF. Whether it may help in selecting more appropriate patients for ICD implantation or not should be evaluated within a randomized trial in the future.
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Affiliation(s)
- Mohammad Hossein Nikoo
- Department of Cardiovascular Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Non-Communicable Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Razieh Naeemi
- Students' Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Alireza Moaref
- Department of Cardiovascular Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Armin Attar
- Department of Cardiovascular Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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