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Zhang S, Zhu Z, Luo M, Chen L, He C, You Z, He H, Lin M, Zhang L, Lin K, Guo Y. The optimal definition and prediction nomogram for left ventricular remodelling after acute myocardial infarction. ESC Heart Fail 2023; 10:2955-2965. [PMID: 37489064 PMCID: PMC10567660 DOI: 10.1002/ehf2.14479] [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: 03/13/2023] [Revised: 06/20/2023] [Accepted: 07/04/2023] [Indexed: 07/26/2023] Open
Abstract
AIMS Left ventricular (LV) remodelling after acute myocardial infarction (AMI) is associated with heart failure and increased mortality. There was no consensus on the definition of LV remodelling, and the prognostic value of LV remodelling with different definitions has not been compared. We aimed to find the optimal definition and develop a prediction nomogram as well as online calculator that can identify patients at risk of LV remodelling. METHODS AND RESULTS This prospective, observational study included 829 AMI patients undergoing percutaneous coronary intervention from January 2015 to January 2020. Echocardiography was performed within the 48 h of admission and at 6 months after infarction to evaluate LV remodelling, defined as a 20% increase in LV end-diastolic volume (LVEDV), a 15% increase in LV end-systolic volume (LVESV), or LV ejection fraction (LVEF) < 50% at 6 months. The impact of LV remodelling on long-term outcomes was analysed. Lasso regression was performed to screen potential predictors, and multivariable logistic regression analysis was conducted to establish the prediction nomogram. The area under the curve, calibration curve and decision curve analyses were used to determine the discrimination, calibration and clinical usefulness of the remodelling nomogram. The incidences of LV remodelling defined by LVEDV, LVESV and LVEF were 24.85% (n = 206), 28.71% (n = 238) and 14.60% (n = 121), respectively. Multivariable Cox regression models demonstrated that different definitions of LV remodelling were independently associated with the composite endpoint. However, only remodelling defined by LVEF was significantly connected with long-term mortality (hazard ratio = 2.78, 95% confidence interval 1.41-5.48, P = 0.003). Seven variables were selected to construct the remodelling nomogram, including diastolic blood pressure, heart rate, AMI type, stent length, N-terminal pro brain natriuretic peptide, troponin I, and glucose. The prediction model had an area under the receiver operating characteristics curve of 0.766. The calibration curve and decision curve analysis indicated consistency and better net benefit in the prediction model. CONCLUSIONS LV remodelling defined by LVEDV, LVESV and LVEF were independent predictors for long-term mortality or heart failure hospitalization in AMI patients after percutaneous coronary intervention. However, only remodelling defined by LVEF was suitable for predicting all-cause death. In addition, the nomogram can provide an accurate and effective tool for the prediction of postinfarct remodelling.
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Affiliation(s)
- Sicheng Zhang
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
| | - Zheng Zhu
- Department of Endocrine and Metabolic Diseases, School of MedicineShanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong UniversityShanghaiChina
| | - Manqing Luo
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
| | - Lichuan Chen
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
| | - Chen He
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
| | - Zhebin You
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
- Department of Geriatric MedicineShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Haoming He
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
| | - Maoqing Lin
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
| | - Liwei Zhang
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
| | - Kaiyang Lin
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
| | - Yansong Guo
- Department of CardiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Provincial Clinical Research Center for Severe Acute Cardiovascular DiseasesFuzhouChina
- Fujian Heart Failure Center AllianceFuzhouChina
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Ha LN, Trung NTT, Son MH, Chien DV, Paeng JC. Prognostic Role of Diastolic Left Ventricular Mechanical Dyssynchrony by Gated Single Photon Emission Computed Tomography Myocardial Perfusion Imaging in Post-Myocardial Infarction. World J Nucl Med 2023; 22:108-113. [PMID: 37223631 PMCID: PMC10202567 DOI: 10.1055/s-0043-1764304] [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] [Indexed: 05/25/2023] Open
Abstract
Objective This study is aimed to assess the prognostic value of diastolic left ventricular mechanical dyssynchrony (LVMD) measured by gated-single photon emission computed tomography (GSPECT) myocardial perfusion imaging (MPI) in post-myocardial infarction (MI). Subjects and Methods The study was conducted on 106 post-MI from January 2015 to January 2019. First, the indices of diastolic LVMD phase standard deviation (PSD) and histogram bandwidth (HBW) of post-MI were measured using the Cardiac Emory Toolbox. Subsequently, the post-MI patients were followed up, and the primary endpoint was major adverse cardiac events (MACEs). Finally, the prognostic value of dyssynchrony parameters for MACE was analyzed by the receiver-operating characteristics curve and survival analyses. Results With the cut-off values of 55.5 degrees of PSD, the sensitivity and specificity in prediction of MACE were 75% and 80.8%, with the cut-off values of 174.5 degrees of HBW, the sensitivity and specificity were 75% and 83.3% respectively. There was a significant difference of time to MACE between groups of PSD less than 55.5 degrees and more than 55.5 degrees. PSD, HBW, and left ventricle ejection fraction (LVEF) assessed on GSPECT were significant factors in the prediction of MACE. Conclusion Diastolic LVMD parameters of PSD and HBW derived from GSPECT are significant prognostic factors in predicting MACE in post-MI patients.
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Affiliation(s)
- Le Ngoc Ha
- Department of Nuclear Medicine, Hospital 108, Hanoi, Vietnam
| | | | - Mai Hong Son
- Department of Nuclear Medicine, Hospital 108, Hanoi, Vietnam
| | - Do Van Chien
- Department of Cardiology, Heart Institute, Hospital 108, Hanoi, Vietnam
| | - Jin Chun Paeng
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea
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Meng T, Wang P, Ding J, Du R, Gao J, Li A, Yu S, Liu J, Lu X, He Q. Global Research Trends on Ventricular Remodeling: A Bibliometric Analysis From 2012 to 2022. Curr Probl Cardiol 2022; 47:101332. [PMID: 35870550 DOI: 10.1016/j.cpcardiol.2022.101332] [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: 07/12/2022] [Accepted: 07/17/2022] [Indexed: 11/03/2022]
Abstract
Ventricular remodeling is the progressive pathologic change of the original substance and morphology of the ventricle caused by various injuries and has attracted increasing attention in the past decade. This study aims to conduct a bibliometric analysis of articles on ventricular remodeling published in the Web of Science Core Collection database from 2012 to 2022 to understand the current research state in the field of ventricular remodeling and provide insights for clinicians and researchers. As a result, a total of 1710 articles on ventricular remodeling were included. Annual publications have been gradually increasing and have remained at a high level over the past 10 years. The United States of America contributed the most publications, followed by China. Circulation was the most mainstream and authoritative journal focusing on ventricular remodeling. Research hotspot analysis suggested that myocardial infarction was the primary risk factor for ventricular remodeling, and emerging risk factor studies have focused on pulmonary hypertension, aortic stenosis, and diabetes. The mechanisms in the pathogenesis of ventricular remodeling were mainly closely associated with inflammation, apoptosis, oxidative stress, and myocardial fibrosis. Intensive investigation of the interactions between different mechanisms might be a future research direction. In terms of treatment, cardiac resynchronization therapy was a hot topic of research. These findings can help researchers grasp the research status of ventricular remodeling and determine future research directions.
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Affiliation(s)
- Tiantian Meng
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Peng Wang
- Department of Traditional Chinese Medicine, Beijing Jiangong Hospital, Beijing, China
| | - Jingyi Ding
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ruolin Du
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jing Gao
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Anqi Li
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Shanshan Yu
- Graduate School, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Jin Liu
- Graduate School, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Xinyu Lu
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qingyong He
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
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Zhen XW, Li WC, Wang H, Song NP, Zhong L. Does types of atrial fibrillation matter in the impairment of global and regional left ventricular mechanics and intra-ventricular dyssynchrony? Front Cardiovasc Med 2022; 9:1019472. [DOI: 10.3389/fcvm.2022.1019472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/30/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundAtrial fibrillation (AF) is the most common sustained cardiac arrhythmia, which is associated with cardiac dysfunction. This study aimed to compare the impairment severity of left ventricular strain and intra-ventricular dyssynchrony using echocardiography-derived velocity vector imaging in patients with different types of AF without heart failure.Methods168 non-valvular AF patients with normal left ventricular ejection fraction (98 paroxysmal AF patients and 70 persistent AF patients) and 86 healthy control subjects were included in this study. Regional and global left ventricular longitudinal and circumferential strain were measured. Time to regional peak longitudinal strain was measured and the standard deviation of all 12 segments (SDT-S) was used as a measure of intra-ventricular dyssynchrony.ResultsSignificantly lower GLS (−18.71 ± 3.00% in controls vs. −17.10 ± 3.01% in paroxysmal AF vs. −12.23 ± 3.25% in persistent AF, P < 0.05) and GCS (−28.75 ± 6.34% in controls vs. −24.43 ± 6.86% in paroxysmal AF vs. −18.46 ± 6.42% in persistent AF, P < 0.01) were observed in either persistent AF subjects or paroxysmal AF subjects compared with healthy control subjects (P < 0.05). The impairment was much worse in persistent AF subjects compared with paroxysmal AF subjects (P < 0.001). Intraventricular dyssynchrony was found in both persistent AF patients and paroxysmal AF patients, and it’s worse in persistent AF patients (52 ± 18 ms in controls, 61 ± 17 ms in paroxysmal AF, and 70 ± 28 ms in persistent AF, P < 0.05). Multivariate regression analysis revealed AF types were independent risk factors of GLS, GCS, and intraventricular dyssynchrony.ConclusionAF types were not only associated with impaired longitudinal and circumferential left ventricle mechanics but also intra-ventricular mechanical dyssynchrony. Worse systolic mechanics and intra-ventricular dyssynchrony were found in patients with persistent AF compared with these in patients with paroxysmal AF.
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van der Bijl P, Delgado V, Bax JJ. Diastolic dyssynchrony by SPECT: A novel parameter to predict post-infarct adverse remodeling. J Nucl Cardiol 2022; 29:1534-1536. [PMID: 33474693 DOI: 10.1007/s12350-020-02484-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Pieter van der Bijl
- Department of Cardiology, Heart Lung Center, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands.
| | - Victoria Delgado
- Department of Cardiology, Heart Lung Center, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Jeroen J Bax
- Department of Cardiology, Heart Lung Center, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
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Iwahashi N, Kirigaya J, Gohbara M, Abe T, Horii M, Hanajima Y, Toya N, Takahashi H, Kirigaya H, Minamimoto Y, Kimura Y, Okada K, Matsuzawa Y, Hibi K, Kosuge M, Ebina T, Tamura K, Kimura K. Mechanical dispersion combined with global longitudinal strain estimated by three dimensional speckle tracking in patients with ST elevation myocardial infarction. IJC HEART & VASCULATURE 2022; 40:101028. [PMID: 35434256 PMCID: PMC9010606 DOI: 10.1016/j.ijcha.2022.101028] [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: 12/03/2021] [Revised: 03/27/2022] [Accepted: 04/03/2022] [Indexed: 11/13/2022]
Abstract
LV mechanical dispersion is a measure of regional heterogeneity of myocardial contraction. LV mechanical dispersion has been reported as an important prognosticator in STEMI. 3D speckle tracking enables us to precisely measure LV mechanical dispersion. LV mechanical dispersion by 3D speckle tracking can precisely predict prognosis.
Background The role of left ventricular (LV) mechanical dispersion estimated after an ST elevation acute myocardial infarction (STEMI) remains unclear. Methods The study participants were 208 consecutive patients (152 men, age = 72 years) presenting with STEMI for the first time who underwent primary percutaneous coronary intervention (PCI) within 12 h of STEMI onset. Within 48 h of PCI (mean = 24 h), 2D and 3D speckle-tracking echocardiography were performed. The global longitudinal strain (GLS) was calculated using 3D (3D-GLS) and 2D (2D-GLS) speckle tracking. Mechanical dispersion was defined using the standard deviation (SD) of the time to regional peak longitudinal strain (LS) for all 16 segments for both 2D-STE and 3D-STE (2D-LS-SD, 3D-LS-SD). Infarct size was estimated by Tc99m-sestamibi as the total area of < 50% of the uptake area at 2 weeks. The patients were followed up for a longer period of time (median118months) and checked for major adverse cardiac events (MACE: cardiac death, heart failure). Results During follow-up, 55 patients experienced MACE. The cut-off values were determined using receiver operating characteristic curves. The multivariate analysis revealed that a 3D-LS-SD > 56.7 ms was a significant predictor of MACEs (hazard ratio = 1.991, 95% confidence interval 1.033–3.613, p = 0.03), but 2D-LS-SD > 58.1 ms was not an independent predictor of MACEs (hazard ratio = 1.577, 95% confidence interval 0.815–3.042, p = 0.1). Furthermore, the combination of 3D-GLS and 3D-LS-SD had accurate predictability for MACE, as shown by the Kaplan-Meier curves (log rank, χ2 = 94.1, p < 0.0001). Conclusions LV mechanical dispersion besides 3D-GLS assessed by 3D-STE immediately after PCI can predict long-term prognosis.
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Azazy AS, Soliman M, Yaseen R, Mena M, Sakr H. Left ventricular dyssynchrony assessment using tissue synchronization imaging in acute myocardial infarction. Avicenna J Med 2021; 9:48-54. [PMID: 31143697 PMCID: PMC6530268 DOI: 10.4103/ajm.ajm_168_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objectives: To assess left ventricular (LV) dyssynchrony in patients with ST elevation myocardial infarction (STEMI). Background: Mechanical synchronization disorder leads to a decrease in LV ejection fraction (LVEF) and stroke volume, an abnormal distribution of wall tension, and increase in workload during cardiac contraction. Methods: We enrolled 56 participants, 36 with acute STEMI and 20 healthy controls. The automatically color-coded time to peak myocardial velocity was measured using a 6mm sample volume, manually positioned within the two-dimensional-tissue strain image of the 12 basal and middle LV segments. Results: A significant delay was found between the septal-lateral and septal-posterior walls in patients with STEMI compared to patients in the control group (36.36 vs. −6.0ms, P = 0.036; and 42.7 vs. 23.94ms, P = 0.042, respectively). Furthermore, all segment maximum differences and all segment standard deviation (SD; dyssynchrony index) were found to be significantly higher in the STEMI group (131.28 vs. 95.45ms, P = 0.013; and 44.47 vs. 26.45ms, P = 0.001, respectively). A significant delay between the septal-lateral walls and septal-posterior walls, all segment maximum difference, and all segment SD (dyssynchrony index) were found in patients with complicated STEMI (70.89 vs. 15.83ms, P = 0.038; 57.44 vs. 19.06ms, P = 0.040; 138.11 vs. 100.0ms, P = 0.035; and 45.44 vs. 32.50ms, P = 0.021, respectively). There was a significant negative correlation between tissue synchronization imaging parameters and LVEF, and a positive correlation with LV end systolic dimension. Conclusion: Patients with acute STEMI showed significant LV dyssynchrony, which was an independent predictor of inhospital complications.
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Affiliation(s)
- Ahmed S Azazy
- Department of Cardiology, King Saud Medical City, Riyadh, Saudi Arabia
| | - Mahmoud Soliman
- Department of Cardiology, Meoufiya University Hospital, Meoufiya, Egypt
| | - Rehab Yaseen
- Department of Cardiology, Meoufiya University Hospital, Meoufiya, Egypt
| | - Morad Mena
- Department of Cardiology, Meoufiya University Hospital, Meoufiya, Egypt
| | - Haitham Sakr
- Department of Cardiology, King Saud Medical City, Riyadh, Saudi Arabia
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Legallois D, Marie PY, Franken PR, Djaballah W, Agostini D, Manrique A. Comparison of the dyssynchrony parameters recorded with gated SPECT in ischemic cardiomyopathy according to their repeatability at rest and to their ability to detect a synchrony reserve under dobutamine infusion. J Nucl Cardiol 2020; 27:2247-2257. [PMID: 30515748 DOI: 10.1007/s12350-018-01546-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 11/10/2018] [Indexed: 11/26/2022]
Abstract
BACKGROUND This study aimed to determine whether the repeatability of dyssynchrony assessment using gated myocardial perfusion SPECT (GSPECT) allows the detection of synchrony reserve during low-dose dobutamine infusion. METHODS AND RESULTS Sixty-one patients with ischemic cardiomyopathy and LV ejection fraction < 50% were prospectively included in 10 centers. Each patient underwent two consecutive rest GSPECT with 99mTc-labeled tracer (either tetrofosmin or sestamibi) to assess the repeatability of LV function and dyssynchrony parameters, followed by a GSECT acquisition during low-dose dobutamine infusion. LV dyssynchrony was assessed using QGS software through histogram bandwidth (BW), standard deviation of the phase (SD), and entropy. Repeatability was assessed with Lin's concordance correlation coefficient (CCC). Entropy showed a higher CCC (0.80) compared to BW (0.68) and SD (0.75). On average, dobutamine infusion yielded to improve both BW (P = .049) and entropy (P = .04) although significant improvements, setting outside the 95% confidence interval of the repeatability analysis, were documented in only 6 and 4 patients for BW and entropy, respectively. CONCLUSIONS A synchrony reserve may be documented in patients with ischemic cardiomyopathy through the recording of BW and entropy with low-dose dobutamine GSPECT, with the additional advantage of a higher repeatability for entropy.
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Affiliation(s)
- Damien Legallois
- Normandie Université, UNICAEN, Signalisation, électrophysiologie et imagerie des lésions d'ischémie-reperfusion myocardique, FHU REMOD-VHF, 14000, Caen, France
- Department of Cardiology, CHU de Caen, 14000, Caen, France
| | | | | | | | - Denis Agostini
- Normandie Université, UNICAEN, Signalisation, électrophysiologie et imagerie des lésions d'ischémie-reperfusion myocardique, FHU REMOD-VHF, 14000, Caen, France
- Department of Nuclear Medicine, CHU de Caen, 14000, Caen, France
| | - Alain Manrique
- Normandie Université, UNICAEN, Signalisation, électrophysiologie et imagerie des lésions d'ischémie-reperfusion myocardique, FHU REMOD-VHF, 14000, Caen, France.
- Department of Nuclear Medicine, CHU de Caen, 14000, Caen, France.
- Investigations chez l'Homme, GIP Cyceron PET Center, Campus Jules Horowitz, BP 5229, 14074, Caen, France.
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Kanar BG, Tigen MK, Sunbul M, Cincin AA, Gurel E, Sayar N, Kepez A, Sadıc BO. Evaluation of right ventricular dyssynchrony in patients with acute inferior myocardial infarction and its relation with mortality. Echocardiography 2020; 37:1610-1616. [PMID: 32986898 DOI: 10.1111/echo.14865] [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: 06/25/2020] [Revised: 08/22/2020] [Accepted: 08/31/2020] [Indexed: 12/01/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate right ventricle (RV) dyssynchrony and its relation with mortality using speckle-tracking echocardiography (STE) in patients with acute inferior myocardial infarction (IMI). METHODS One hundred and fifty-eight consecutive patients with acute IMI treated with primary percutaneous coronary intervention, and 44 healthy subjects were included. RV myocardial involvement (RVMI) was defined as an elevation >1 mm in V1 or V4R and/or the presence of a culprit lesion at the proximal portion of the first RV marginal branch after reviewing coronary angiography. Patients were followed for 3 years to determine the cardiovascular mortality. RESULTS Overall, 70 patients with IMI had RVMI. IMI patients had significantly higher RV peak systolic longitudinal strain dyssynchrony (PLSSD) index, lower peak longitudinal systolic strain (PLSS), longer time to PLSS, and time to PLSS differences compared to healthy controls while the patients with RVMI had significantly worse values compared to patients without RVMI and healthy controls. Twenty-seven patients (17.1%) died within 2 years. RVMI was more prevalent in mortality group, and they had significantly higher RV PSSD index, whereas they had lower RV free wall PLSS and longer time to PLSS differences. Receiver operating characteristics (ROC) analysis revealed that a RV PLSSD index > 65 ms predicted mortality with a sensitivity of 88.9% and specificity of 71.8% in IMI patients. CONCLUSIONS Intra- and inter-ventricular dyssynhcrony may develop in patients with acute IMI, especially in those with RV involvement, which might have a negative effect on the prognosis of these patients.
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Affiliation(s)
- Batur Gonenc Kanar
- Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Mustafa Kursat Tigen
- Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Murat Sunbul
- Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Ahmet Altug Cincin
- Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Emre Gurel
- Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Nurten Sayar
- Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Alper Kepez
- Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Beste Ozben Sadıc
- Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey
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Relationship between fragmented QRS complexes and ejection fraction recovery in anterior ST-segment elevation myocardial infarction patients undergoing thrombolytic treatment. Coron Artery Dis 2020; 31:417-423. [PMID: 32168047 DOI: 10.1097/mca.0000000000000878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Acute anterior ST-segment elevation myocardial infarction (STEMI) is a life-threatening disease. Adverse cardiac events of acute anterior STEMI include cardiovascular death or worsening congestive heart failure. This study investigated the role of fragmented QRS complex (fQRS) in predicting insufficient ejection fraction (EF) recovery in acute anterior STEMI. METHODS Patients with acute anterior STEMI who received thrombolytic therapy were prospectively enrolled in this study. Twelve-lead electrocardiography (ECG) was obtained from all patients during admission and 24 and 48 h after admission. We divided the patients into two groups according to the presence of fQRS appearance within 48 h: absence of fQRS in any lead (fQRS-), and its presence in two or more contiguous leads (fQRS+). All patients were evaluated with transthoracic echocardiography at admission, and at follow-up 6 and 12 months later. RESULTS A total of 138 consecutive patients were included in the study. Seventy-three patients (52.9%) had fQRS in the ECG. EF recovery in the fQRS(+) group was significantly lower than that of the fQRS(-) group (39% vs. 43.9%, P < 0.001). Multiple logistic regression analysis showed that the fQRS (odds ratio: 4.147, 95% confidence interval: 1.607-10.697, P = 0.003) were an independent predictor of poor EF recovery. CONCLUSION The presence of fQRS is an independent predictor for inadequate EF recovery in acute anterior STEMI patients undergoing thrombolytic treatment. Assessment of fQRS on surface ECG may be used in determining high-risk patients for poor EF recovery after acute anterior STEMI.
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Association between Galectin-3 levels within central and peripheral venous blood, and adverse left ventricular remodelling after first acute myocardial infarction. Sci Rep 2019; 9:13145. [PMID: 31511537 PMCID: PMC6739356 DOI: 10.1038/s41598-019-49511-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 08/08/2019] [Indexed: 12/24/2022] Open
Abstract
Our study investigates association between Galectin-3 levels and adverse left ventricular remodelling (LVR) at six months. Fifty-seven patients following first acute myocardial infarction (AMI) were enrolled in this study and blood samples collected on day 1 from the femoral vein and artery, the right atrium near the coronary sinus and the aortic root, and on day 30, from the cubital vein. Patients with LVESV ≥20% at six months, were included in the LVR group. On day 1, Galectin-3 plasma levels in the femoral vein (10.34 ng/ml ± 3.81 vs 8.22 ng/ml ± 2.34, p = 0.01), and near coronary sinus (10.7 ng/ml ± 3.97 vs 8.41 ng/ml ± 2.56, p = 0.007) were higher in the LVR group. Positive correlations between Galectin-3 levels from aortic root and coronary sinus, aortic root and femoral vein, and coronary sinus and femoral vein, were observed in both groups. On day 30, Galectin-3 concentration in the cubital vein was an independent risk factor of LVR six months post-AMI, demonstrating 1.5-fold increased risk. Day-30 Galectin-3 also showed positive correlations with echocardiography parameters indicative of diastolic and systolic dysfunction. Determining Galectin-3 plasma concentration on day 30 following AMI could have beneficial prognostic value in predicting LVR.
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Stiermaier T, Backhaus SJ, Lange T, Koschalka A, Navarra JL, Boom P, Lamata P, Kowallick JT, Lotz J, Gutberlet M, de Waha-Thiele S, Desch S, Hasenfuß G, Thiele H, Eitel I, Schuster A. Cardiac Magnetic Resonance Left Ventricular Mechanical Uniformity Alterations for Risk Assessment After Acute Myocardial Infarction. J Am Heart Assoc 2019; 8:e011576. [PMID: 31387432 PMCID: PMC6759895 DOI: 10.1161/jaha.118.011576] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Despite limitations as a stand-alone parameter, left ventricular (LV) ejection fraction is the preferred measure of myocardial function and marker for postinfarction risk stratification. LV myocardial uniformity alterations may provide superior prognostic information after acute myocardial infarction, which was the subject of this study. Methods and Results Consecutive patients with acute myocardial infarction (n=1082; median age: 63 years; 75% male) undergoing cardiac magnetic resonance at a median of 3 days after infarction were included in this multicenter observational study. Circumferential and radial uniformity ratio estimates were derived from cardiac magnetic resonance feature tracking as markers of mechanical uniformity alterations (values between 0 and 1 with 1 reflecting perfect uniformity). The clinical end point was the 12-month rate of major adverse cardiac events, consisting of all-cause death, reinfarction, and new congestive heart failure. Patients with major adverse cardiac events (n=73) had significantly impaired circumferential uniformity ratio estimates (0.76 [interquartile range: 0.67-0.86] versus 0.84 [interquartile range: 0.76-0.89]; P<0.001) and radial uniformity ratio estimates (0.69 [interquartile range: 0.60-0.79] versus 0.76 [interquartile range: 0.67-0.83]; P<0.001) compared with patients without events. Although uniformity estimates did not provide independent prognostic information in the overall cohort, a circumferential uniformity ratio estimate below the median of 0.84 emerged as an independent predictor of outcome in postinfarction patients with LV ejection fraction >35% (n=959), even after adjustment for established risk factors (hazard ratio: 1.99; 95% CI, 1.06-3.74; P=0.033 in multivariable Cox regression analysis). In contrast, LV ejection fraction was not associated with adverse events in this subgroup of patients with acute myocardial infarction. Conclusions Cardiac magnetic resonance-derived estimates of mechanical uniformity alterations are novel markers for risk assessment after acute myocardial infarction, and the circumferential uniformity ratio estimate provides independent prognostic information for patients with preserved or only moderately reduced LV ejection fraction.
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Affiliation(s)
- Thomas Stiermaier
- Medical Clinic II (Cardiology/Angiology/Intensive Care Medicine) University Heart Center Lübeck University Hospital Schleswig-Holstein Lübeck Germany.,German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck Lübeck Germany
| | - Sören J Backhaus
- Department of Cardiology and Pneumology University Medical Center Göttingen Georg-August University Göttingen Germany.,German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany
| | - Torben Lange
- Department of Cardiology and Pneumology University Medical Center Göttingen Georg-August University Göttingen Germany.,German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany
| | - Alexander Koschalka
- Department of Cardiology and Pneumology University Medical Center Göttingen Georg-August University Göttingen Germany.,German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany
| | - Jenny-Lou Navarra
- Department of Cardiology and Pneumology University Medical Center Göttingen Georg-August University Göttingen Germany.,German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany
| | - Patricia Boom
- Department of Cardiology and Pneumology University Medical Center Göttingen Georg-August University Göttingen Germany.,German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany
| | - Pablo Lamata
- Department of Biomedical Engineering School of Biomedical Engineering and Imaging Sciences King's College of London London United Kingdom
| | - Johannes T Kowallick
- German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany.,Institute for Diagnostic and Interventional Radiology University Medical Center Göttingen Georg-August University Göttingen Germany
| | - Joachim Lotz
- German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany.,Institute for Diagnostic and Interventional Radiology University Medical Center Göttingen Georg-August University Göttingen Germany
| | - Matthias Gutberlet
- Department of Radiology Heart Center Leipzig at University of Leipzig Germany
| | - Suzanne de Waha-Thiele
- Medical Clinic II (Cardiology/Angiology/Intensive Care Medicine) University Heart Center Lübeck University Hospital Schleswig-Holstein Lübeck Germany.,German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck Lübeck Germany
| | - Steffen Desch
- Department of Internal Medicine/Cardiology Heart Center Leipzig at University of Leipzig Germany
| | - Gerd Hasenfuß
- Department of Cardiology and Pneumology University Medical Center Göttingen Georg-August University Göttingen Germany.,German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany
| | - Holger Thiele
- Department of Internal Medicine/Cardiology Heart Center Leipzig at University of Leipzig Germany
| | - Ingo Eitel
- Medical Clinic II (Cardiology/Angiology/Intensive Care Medicine) University Heart Center Lübeck University Hospital Schleswig-Holstein Lübeck Germany.,German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck Lübeck Germany
| | - Andreas Schuster
- Department of Cardiology and Pneumology University Medical Center Göttingen Georg-August University Göttingen Germany.,German Center for Cardiovascular Research (DZHK), partner site Göttingen Göttingen Germany.,Department of Biomedical Engineering School of Biomedical Engineering and Imaging Sciences King's College of London London United Kingdom.,Department of Cardiology Royal North Shore Hospital The Kolling Institute Northern Clinical School University of Sydney Australia
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Reduction of Left Ventricular Dilation Beyond the First Year After Anterior Myocardial Infarction. J Card Fail 2019; 25:645-653. [DOI: 10.1016/j.cardfail.2019.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 03/05/2019] [Accepted: 03/19/2019] [Indexed: 11/24/2022]
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Accuracy of three-dimensional systolic dyssynchrony and sphericity indexes for identifying early left ventricular remodeling after acute myocardial infarction. Anatol J Cardiol 2019; 22:13-20. [PMID: 31264652 PMCID: PMC6683215 DOI: 10.14744/anatoljcardiol.2019.02844] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Objective: Left ventricle (LV) geometry and dyssynchrony are associated with LV remodeling after acute myocardial infarction (AMI). The aim of this prospective study was to assess the diagnostic value of new three-dimensional echocardiography (3DE) parameters [sphericity (SI) and systolic dyssynchrony indexes (SDI)] for the prediction of LV remodeling after AMI and to compare them with two-dimensional echocardiography (2DE) parameters. Methods: 2DE and 3DE were performed in 75 patients with AMI within 3 days from the onset of MI and 6 months later. LV remodeling was defined as a ≥15% increase in the LV end-diastolic volume (EDV) at follow-up. 3D SI was calculated by dividing EDV by the volume of a sphere whose diameter was derived from the major end-diastolic LV long axis. SDI was considered as a standard deviation of the time from cardiac cycle onset to minimum systolic volume in 16 LV segments. Results: LV remodeling was identified in 34 (45%) patients using the 2DE method and in 22 (29%) patients using the 3DE method. Evaluated 3DE parameters, such as EDV [area under the receiver operating characteristic (ROC) curve (AUC) 0.742, sensitivity 71%, specificity 79%], end-systolic volume (AUC 0.729, sensitivity 69%, specificity 78%), SDI (AUC 0.777, sensitivity 73%, specificity 77%), and SI, had significant prognostic value for LV remodeling. According to the AUC, the highest predictive value had 3D SI (AUC 0.957, sensitivity 90%, specificity 91%). Conclusion: 3DE parameters, especially 3D SI and SDI, play important roles in the prediction of LV remodeling after AMI and can be used in clinical practice.
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Paiman EHM, Androulakis AFA, Shahzad R, Tao Q, Zeppenfeld K, Lamb HJ, van der Geest RJ. Association of cardiovascular magnetic resonance-derived circumferential strain parameters with the risk of ventricular arrhythmia and all-cause mortality in patients with prior myocardial infarction and primary prevention implantable cardioverter defibrillator. J Cardiovasc Magn Reson 2019; 21:28. [PMID: 31096987 PMCID: PMC6521513 DOI: 10.1186/s12968-019-0536-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 03/27/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Impaired left ventricular (LV) contraction and relaxation may further promote adverse remodeling and may increase the risk of ventricular arrhythmia (VA) in ischemic cardiomyopathy. We aimed to examine the association of cardiovascular magnetic resonance (CMR)-derived circumferential strain parameters for LV regional systolic function, LV diastolic function and mechanical dispersion with the risk of VA in patients with prior myocardial infarction and primary prevention implantable cardioverter defibrillator (ICD). METHODS Patients with an ischemic cardiomyopathy who underwent CMR prior to primary prevention ICD implantation, were retrospectively identified. LV segmental circumferential strain curves were extracted from short-axis cine CMR. For LV regional strain analysis, the extent of moderately and severely impaired strain (percentage of LV segments with strain between - 10% and - 5% and > - 5%, respectively) were calculated. LV diastolic function was quantified by the early and late diastolic strain rate. Mechanical dispersion was defined as the standard deviation in delay time between each strain curve and the patient-specific reference curve. Cox proportional hazard ratios (HR) (95%CI) were calculated to assess the association between LV strain parameters and appropriate ICD therapy. RESULTS A total of 121 patients (63 ± 11 years, 84% men, LV ejection fraction (LVEF) 27 ± 9%) were included. During a median (interquartile range) follow-up of 47 (27;69) months, 30 (25%) patients received appropriate ICD therapy. The late diastolic strain rate (HR 1.1 (1.0;1.2) per - 0.25 1/s, P = 0.043) and the extent of moderately impaired strain (HR 1.5 (1.0;2.2) per + 10%, P = 0.048) but not the extent of severely impaired strain (HR 0.9 (0.6;1.4) per + 10%, P = 0.685) were associated with appropriate ICD therapy, independent of LVEF, late gadolinium enhancement (LGE) scar border size and acute revascularization. Mechanical dispersion was not related to appropriate ICD therapy (HR 1.1 (0.8;1.6) per + 25 ms, P = 0.464). CONCLUSIONS In an ischemic cardiomyopathy population referred for primary prevention ICD implantation, the extent of moderately impaired strain and late diastolic strain rate were associated with the risk of appropriate ICD therapy, independent of LVEF, scar border size and acute revascularization. These findings suggest that disturbed LV contraction and relaxation may contribute to an increased risk of VA after myocardial infarction.
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MESH Headings
- Aged
- Arrhythmias, Cardiac/diagnosis
- Arrhythmias, Cardiac/mortality
- Arrhythmias, Cardiac/physiopathology
- Arrhythmias, Cardiac/prevention & control
- Defibrillators, Implantable
- Electric Countershock/adverse effects
- Electric Countershock/instrumentation
- Electric Countershock/mortality
- Female
- Humans
- Magnetic Resonance Imaging
- Male
- Middle Aged
- Myocardial Infarction/diagnostic imaging
- Myocardial Infarction/mortality
- Myocardial Infarction/physiopathology
- Predictive Value of Tests
- Primary Prevention/instrumentation
- Retrospective Studies
- Risk Assessment
- Risk Factors
- Time Factors
- Treatment Outcome
- Ventricular Dysfunction, Left/diagnostic imaging
- Ventricular Dysfunction, Left/mortality
- Ventricular Dysfunction, Left/physiopathology
- Ventricular Dysfunction, Left/therapy
- Ventricular Function, Left
- Ventricular Remodeling
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Affiliation(s)
- Elisabeth H. M. Paiman
- Department of Radiology, Leiden University Medical Center, P.O. Box 9600, postal zone C2-S, 2300 RC Leiden, The Netherlands
| | - Alexander F. A. Androulakis
- Department of Cardiology, Leiden University Medical Center, P.O. Box 9600, postal zone C2-S, 2300 RC Leiden, The Netherlands
| | - Rahil Shahzad
- LKEB, Division of Image Processing, Department of Radiology, Leiden University Medical Center, P.O. Box 9600, postal zone C2-S, 2300 RC Leiden, The Netherlands
| | - Qian Tao
- LKEB, Division of Image Processing, Department of Radiology, Leiden University Medical Center, P.O. Box 9600, postal zone C2-S, 2300 RC Leiden, The Netherlands
| | - Katja Zeppenfeld
- Department of Cardiology, Leiden University Medical Center, P.O. Box 9600, postal zone C2-S, 2300 RC Leiden, The Netherlands
| | - Hildo J. Lamb
- Department of Radiology, Leiden University Medical Center, P.O. Box 9600, postal zone C2-S, 2300 RC Leiden, The Netherlands
| | - Rob J. van der Geest
- LKEB, Division of Image Processing, Department of Radiology, Leiden University Medical Center, P.O. Box 9600, postal zone C2-S, 2300 RC Leiden, The Netherlands
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Abstract
Cardiac resynchronization therapy (CRT) is an electrical therapy to resolve an electrical problem. Any method to predict CRT response must specifically reflect the electrical substrate. Time-to-peak dyssynchrony is too unspecific for prediction of response because dyssynchrony by this approach may reflect the presence of scar or fibrosis even in the absence of conduction delay. New methods are based on the actual physiology of activation delay-induced heart failure (HF) and are superior to time-to-peak methods in predicting CRT response. Time-to-peak dyssynchrony may be used for prognosis in HF patients without signs of delayed ventricular activation and for monitoring CRT response.
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Affiliation(s)
- Bhupendar Tayal
- Department of Cardiology, Aalborg University Hospital, Hobrovej 18-22, Aalborg 9100, Denmark
| | - Peter Sogaard
- Department of Cardiology, Aalborg University Hospital, Hobrovej 18-22, Aalborg 9100, Denmark.
| | - Niels Risum
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen 2100, Denmark
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Reverse, stationary and progressive left ventricular dilatation in dilated and nondilated ventricles on admission following first anterior STEMI. Coron Artery Dis 2019; 30:11-19. [DOI: 10.1097/mca.0000000000000665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Prognosis-based definition of left ventricular remodeling after ST-elevation myocardial infarction. Eur Radiol 2018; 29:2330-2339. [PMID: 30547201 PMCID: PMC6443916 DOI: 10.1007/s00330-018-5875-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 10/17/2018] [Accepted: 11/07/2018] [Indexed: 01/03/2023]
Abstract
Objectives Cardiac magnetic resonance (CMR) is the gold-standard modality for the assessment of left ventricular (LV) remodeling in ST-elevation myocardial infarction (STEMI) patients. However, the commonly used remodeling criteria have never been validated for hard clinical events. We therefore aimed to define clear CMR criteria of LV remodeling following STEMI with proven prognostic impact. Methods This observational study included 224 patients suffering from acute STEMI. CMR was performed within 1 week and 4 months after infarction to evaluate different remodeling criteria including relative changes in LV end-diastolic volume (%∆LVEDV), end-systolic volume (%∆LVESV), ejection fraction (%∆LVEF), and myocardial mass (%∆LVMM). Primary endpoint was the occurrence of major adverse cardiovascular events (MACE) including all-cause death, re-infarction, stroke, and new congestive heart failure 24 months following STEMI. Secondary endpoint was defined as composite of primary endpoint and cardiovascular hospitalization. The Mann–Whitney U test was applied to assess differences in LV remodeling measures between patients with and without MACE. Values for the prediction of primary and secondary endpoints were assessed by c-statistics and Cox regression analysis. Results The incidence of MACE (n = 13, 6%) was associated with higher %∆LVEDV (p = 0.002) and %∆LVMM (p = 0.02), whereas %∆LVESV and %∆LVEF were not significantly related to MACE (p > 0.05). The area under the curve (AUC) for the prediction of MACE was 0.76 (95% confidence interval [CI], 0.65–0.87) for %∆LVEDV (optimal cut-off 10%) and 0.69 (95%CI, 0.52–0.85) for %∆LVMM (optimal cut-off 5%). From all remodeling criteria, %∆LVEDV ≥ 10% showed highest hazard ratio (8.68 [95%CI, 2.39–31.56]; p = 0.001) for MACE. Regarding secondary endpoint (n = 35, 16%), also %∆LVEDV with an optimal threshold of 10% emerged as strongest prognosticator (AUC 0.66; 95%CI, 0.56–0.75; p = 0.004). Conclusions Following revascularized STEMI, %∆LVEDV ≥ 10% showed strongest association with clinical outcome, suggesting this criterion as preferred CMR-based definition of post-STEMI LV remodeling. Key Points • CMR-determined %∆LVEDV and %∆LVMM were significantly associated with MACE following STEMI. • Neither %∆LVESV nor %∆LVEF showed a significant relation to MACE. • %∆LVEDV ≥ 10 was revealed as LV remodeling definition with highest prognostic validity.
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Myocardial perfusion imaging detects mechanical dyssynchrony in left ventricular infarcted and noninfarcted areas early after acute myocardial infarction in a porcine model. Nucl Med Commun 2018; 40:115-123. [PMID: 30418381 DOI: 10.1097/mnm.0000000000000945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND Left ventricular mechanical dyssynchrony (LVMD) is closely associated with left ventricular dysfunction and poor prognosis in patients with acute myocardial infarction (AMI). However, whether mechanical dyssynchrony is present in the noninfarcted areas remains controversial. This research aimed to quantitatively evaluate the global and regional mechanical dyssynchrony early after AMI by phase analysis of single-photon emission computed tomography (SPECT) gated myocardial perfusion imaging (GMPI) and to further explore the related influencing factors. MATERIALS AND METHODS Of 11 Bama suckling pigs, eight animals were successfully subjected to left anterior descending artery occlusion by balloon to generate porcine AMI models and completed the study. SPECT GMPI was performed before AMI and at 1 day, 1 week, and 4 weeks after AMI. The global bandwidth (BW), SD, entropy, total perfusion deficit, summed rest score, regional BW, regional summed motion score, and regional summed thickening score were measured by SPECT GMPI. RESULTS The global BW, SD, and entropy values significantly increased after AMI and showed no significant change among the three time points after AMI. The BW in the infarcted area (left anterior descending artery-dominated area) at 1 day, 1 week, and 4 weeks after AMI was significantly higher than that before AMI, as was the BW in the noninfarcted areas (left circumflex artery-dominated and right coronary artery-dominated areas), which revealed that there was less dyssynchrony in the noninfarcted areas than in the infarcted area at the three time points after AMI. The global BW was positively correlated with the scar burden measured by summed rest score (r=0.709-0.832, all P<0.05), whereas the regional BW in the noninfarcted areas after AMI showed moderate to good correlation with regional summed motion score (r=0.733-0.875, all P<0.05) and regional summed thickening score (r=0.713-0.889, all P<0.05). CONCLUSION LVMD occurs early on the first day after AMI, with no significant worsening over the next 4 weeks. Mechanical dyssynchrony was present in both the infarcted and noninfarcted areas. The global LVMD is mainly influenced by the scar burden, and the regional mechanical dyssynchrony in the noninfarcted areas is closely associated with the abnormal regional wall thickening and motion, which are indicative of reduced myocardial contractility.
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Qi Z, Liu S, Duan F. Effects of bone marrow mononuclear cells delivered through a graft vessel in patients with previous myocardial infarction and chronic heart failure: An echocardiographic study of left ventricular dyssynchrony. JOURNAL OF CLINICAL ULTRASOUND : JCU 2018; 46:512-518. [PMID: 30160313 DOI: 10.1002/jcu.22609] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/28/2018] [Accepted: 05/13/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVES Several trials are investigating the delivery of stem cells to treat ischemic cardiomyopathy. The aim of this study was the echocardiographic evaluation of the effectiveness of isolated coronary artery bypass graft (CABG) combined with bone marrow mononuclear cells (BMMNC) delivered through the graft vessels to improve left ventricular dyssynchrony in patients with previous myocardial infarction and chronic heart failure. METHODS 42 patients with previous myocardial infarction and chronic heart failure were randomly allocated to either the CABG only group (n = 18) or the CABG with BMMNC graft group (n = 24group). We used 2D strain imaging to measure the absolute difference in time-to-peak radial strain between the earliest and the latest activated segments on LV short-axis images at the apical (RSTa), at the mitral annulus (RSTb), and at the papillary muscle (RSTm) level. RESULTS The effective rate of LV dyssynchrony improvement was significantly higher in the CABG + BMMNC than in the CABG only group (RSTb: 91.7% vs 50%, P < .05; RSTm: 78.6% vs 35.7%, P < .05; RSTa: 92.3% vs 50%, P < .05). The deterioration rate of LV synchrony was significantly lower in the CABG + BMMNC than in the CABG only group for RSTb (8.3% vs 70%, P < .05;) and RSTm (0 vs 50%, P < .05), but not for RSTa (18.2% vs 37.5%, P > .05). CONCLUSIONS Combining CABG with BMMNC delivering provided a better improvement of left ventricular dyssynchrony than CABG only.
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Affiliation(s)
- Zhi Qi
- The Department of Ultrasound, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Sheng Liu
- The Department of Cardiovascular Surgery, Fuwai Hospital & Cardiovascular Institute, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Tsinghua University, Peking Union Medical College, Beijing, China
| | - Fujian Duan
- Department of Echocardiography, Fuwai Hospital & Cardiovascular Institute, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Tsinghua University, Peking Union Medical College, Beijing
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Wakabayashi H, Taki J, Inaki A, Hiromasa T, Yamase T, Akatani N, Okuda K, Shibutani T, Shiba K, Kinuya S. Prognostic Value of Early Evaluation of Left Ventricular Dyssynchrony After Myocardial Infarction. Mol Imaging Biol 2018; 21:654-659. [DOI: 10.1007/s11307-018-1279-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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22
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Chew DS, Wilton SB, Kavanagh K, Southern DA, Tan-Mesiatowsky LE, Exner DV. Left ventricular ejection fraction reassessment post-myocardial infarction: Current clinical practice and determinants of adverse remodeling. Am Heart J 2018; 198:91-96. [PMID: 29653653 DOI: 10.1016/j.ahj.2017.11.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 11/28/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Left ventricular (LV) dysfunction may be sustained or aggravated during the convalescent months following an acute myocardial infarction (MI) and is difficult to predict. We sought to determine current practice patterns of LV ejection fraction (LVEF) reassessment during the months following MI and evaluate the predictors and clinical significance of LVEF change in a prospective post-MI patient cohort. METHODS Patients with an acute MI between June 2010 and August 2014 were identified using the Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease registry. Patients with initial LV dysfunction (LVEF <40% with first MI or <45% with multiple MI events) underwent a protocol-driven repeat LVEF assessment in follow-up if routine LVEF reassessment was not performed. RESULTS Of 5,964 MI patients, follow-up LVEF assessments were attained for 442 of the 695 patients who had significant LV dysfunction. A sizable proportion (25%) had either no increase or a decline in LVEF. Adverse remodeling was associated with an anterior MI location, a greater peak serum troponin T, and a higher baseline LVEF at time of MI. Adverse LV remodeling conferred a 3-fold risk of death (hazard ratio 3.0, 95% CI 1.6-5.7, P=.001) adjusted for baseline LVEF, anterior MI location, and medication use. CONCLUSIONS Current practice of LVEF reassessment during the convalescent months post-MI is suboptimal despite a sizeable proportion of patients that undergo adverse LV remodeling. Targeting processes affecting low rates of LVEF reassessment may reduce missed care opportunities and ensure that patients consistently receive appropriate evidence-based and guideline-recommended care.
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Affiliation(s)
- Derek S Chew
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Stephen B Wilton
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Katherine Kavanagh
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Danielle A Southern
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | | | - Derek V Exner
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada.
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Hendriks T, Hartman MHT, Vlaar PJJ, Prakken NHJ, van der Ende YMY, Lexis CPH, van Veldhuisen DJ, van der Horst ICC, Lipsic E, Nijveldt R, van der Harst P. Predictors of left ventricular remodeling after ST-elevation myocardial infarction. Int J Cardiovasc Imaging 2017; 33:1415-1423. [PMID: 28389968 PMCID: PMC5539273 DOI: 10.1007/s10554-017-1131-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 03/31/2017] [Indexed: 11/23/2022]
Abstract
Adverse left ventricular (LV) remodeling after acute ST-elevation myocardial infarction (STEMI) is associated with morbidity and mortality. We studied clinical, biochemical and angiographic determinants of LV end diastolic volume index (LVEDVi), end systolic volume index (LVESVi) and mass index (LVMi) as global LV remodeling parameters 4 months after STEMI, as well as end diastolic wall thickness (EDWT) and end systolic wall thickness (ESWT) of the non-infarcted myocardium, as compensatory remote LV remodeling parameters. Data was collected in 271 patients participating in the GIPS-III trial, presenting with a first STEMI. Laboratory measures were collected at baseline, 2 weeks, and 6–8 weeks. Cardiovascular magnetic resonance imaging (CMR) was performed 4 months after STEMI. Linear regression analyses were performed to determine predictors. At baseline, patients were 21% female, median age was 58 years. At 4 months, mean LV ejection fraction (LVEF) was 54 ± 9%, mean infarct size was 9.0 ± 7.9% of LVM. Strongest univariate predictors (all p < 0.001) were peak Troponin T for LVEDVi (R2 = 0.26), peak CK-MB for LVESVi (R2 = 0.41), NT-proBNP at 2 weeks for LVMi (R2 = 0.24), body surface area for EDWT (R2 = 0.32), and weight for ESWT (R2 = 0.29). After multivariable analysis, cardiac biomarkers remained the strongest predictors of LVMi, LVEDVi and LVESVi. NT-proBNP but none of the acute cardiac injury biomarkers were associated with remote LV wall thickness. Our analyses illustrate the value of cardiac specific biochemical biomarkers in predicting global LV remodeling after STEMI. We found no evidence for a hypertrophic response of the non-infarcted myocardium.
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Affiliation(s)
- Tom Hendriks
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Minke H T Hartman
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Pieter J J Vlaar
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Niek H J Prakken
- Department of Radiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Yldau M Y van der Ende
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Chris P H Lexis
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Dirk J van Veldhuisen
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Iwan C C van der Horst
- Department of Critical Care, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Erik Lipsic
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Robin Nijveldt
- Department of Cardiology, VU University Medical Center, Amsterdam, The Netherlands
| | - Pim van der Harst
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands.
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Biering-Sørensen T, Shah SJ, Anand I, Sweitzer N, Claggett B, Liu L, Pitt B, Pfeffer MA, Solomon SD, Shah AM. Prognostic importance of left ventricular mechanical dyssynchrony in heart failure with preserved ejection fraction. Eur J Heart Fail 2017; 19:1043-1052. [PMID: 28322009 DOI: 10.1002/ejhf.789] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 01/11/2017] [Accepted: 01/16/2017] [Indexed: 12/24/2022] Open
Abstract
AIMS Left ventricular mechanical dyssynchrony has been described in heart failure with preserved ejection fraction (HFpEF), but its prognostic significance is not known. METHODS AND RESULTS Of 3445 patients with HFpEF enrolled in the Treatment of Preserved Cardiac Function Heart Failure with an Aldosterone Antagonist (TOPCAT) trial, dyssynchrony analysis was performed on 424 patients (12%) by multiple speckle tracking echocardiography strain-based criteria. The primary dyssynchrony analysis was the standard deviation of the time to peak longitudinal strain (SD T2P LS). Cox proportional hazards models assessed the association of dyssynchrony with the composite outcome of cardiovascular death or heart failure hospitalization. Mean age was 70 ± 10 years, LVEF was 60 ± 8%, and QRS duration was 101 ± 27 ms. Worse dyssynchrony, reflected in SD T2P LS, was associated with wider QRS, prior myocardial infarction, larger LV volume and mass, and worse systolic (lower LVEF and global longitudinal strain) and diastolic (lower e' and higher E/e') function. During a median follow-up of 2.6 (interquartile range 1.5-3.8) years, 107 patients experienced the composite outcome. Worse dyssynchrony was associated with the composite outcome in unadjusted analysis [hazard ratio (HR) 1.04, 95% confidence interval (CI) 1.01-1.07; P = 0.021, per 10 ms increase], but not after adjusting for clinical characteristics, or after further adjustment for LVEF, AF, NYHA class, stroke, heart rate, creatinine, haematocrit, and QRS duration (HR 1.03, 95% CI 0.99-1.06; P = 0.16, per 10 ms increase). CONCLUSION Worse LV mechanical dyssynchrony, assessed by speckle tracking echocardiography, is not an independent predictor of adverse outcomes in HFpEF, suggesting that mechanical dyssynchrony is unlikely to be an important mechanism underlying this syndrome. These findings warrant validation in an independent study specifically designed to assess the prognostic utility of mechanical dyssynchrony in HFpEF. TRIAL REGISTRATION NCT00094302.
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Affiliation(s)
- Tor Biering-Sørensen
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA, USA.,Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Denmark
| | - Sanjiv J Shah
- Cardiology Division, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Inder Anand
- Cardiovascular Division, VA Medical Center, Minneapolis, MN, USA
| | - Nancy Sweitzer
- Sarver Heart Center, University of Arizona College of Medicine, Tucson, AZ, USA
| | - Brian Claggett
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Li Liu
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Bertram Pitt
- Cardiology Division, University of Michigan School of Medicine, Ann Arbor, MI, USA
| | - Marc A Pfeffer
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Scott D Solomon
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Amil M Shah
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA, USA
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25
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Clinical values of left ventricular mechanical dyssynchrony assessment by gated myocardial perfusion SPECT in patients with acute myocardial infarction and multivessel disease. Eur J Nucl Med Mol Imaging 2016; 44:259-266. [DOI: 10.1007/s00259-016-3542-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/29/2016] [Indexed: 10/20/2022]
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26
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Turan B, Daşli T, Erkol A, Erden İ, Başaran Y. Diastolic Dyssynchrony in Acute ST Segment Elevation Myocardial Infarction and Relationship with Functional Recovery of Left Ventricle. J Cardiovasc Ultrasound 2016; 24:208-214. [PMID: 27721951 PMCID: PMC5050309 DOI: 10.4250/jcu.2016.24.3.208] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 07/18/2016] [Accepted: 07/26/2016] [Indexed: 12/02/2022] Open
Abstract
Background Incidence of diastolic dyssynchrony (DD) and its impact on functional recovery of left ventricle (LV) after ST segment elevation myocardial infarction (STEMI) is not known. Methods Consecutive patients with STEMI who underwent successful revascularization were prospectively enrolled. Echocardiography with tissue Doppler imaging was performed within 48 hours of admission and at 6 months. LV end-diastolic volume index (EDVI), end-systolic volume index (ESVI), ejection fraction (EF), and left atrial volume index (LAVI) were calculated. Diastolic delay was calculated from onset of QRS complex to peak of E wave in tissue Doppler image and presented as maximal temporal difference between peak early diastolic velocity of 6 basal segments of LV (TeDiff). Study patients were compared with demographically matched control group. Results Forty eight consecutive patients (55 ± 10 years, 88% male) and 24 controls (56 ± 6 years, 88% male) were included. TeDiff was higher in STEMI than in controls (35.9 ± 19.9 ms vs. 26.3 ± 6.8 ms, p = 0.025). Presence of DD was higher in STEMI than controls (58% vs. 33%, p = 0.046) according to calculated cut-off value (≥ 29 ms). There was no correlation between TeDiff and change in EDVI, ESVI, and LAVI at 6 months, however TeDiff and change in EF at 6 months was positively correlated (r = 0.328, p = 0.023). Patients with baseline DD experienced remodeling less frequently compared to patients without baseline DD (11% vs. 38%, p = 0.040) during follow-up. Conclusion STEMI disrupts diastolic synchronicity of LV. However, DD during acute phase of STEMI is associated with better recovery of LV thereafter. This suggests that DD is associated with peri-infarct stunned myocardium that is salvaged with primary intervention as well as infarct size.
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Affiliation(s)
- Burak Turan
- Cardiology Department, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - Tolga Daşli
- Cardiology Department, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - Ayhan Erkol
- Cardiology Department, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - İsmail Erden
- Cardiology Department, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - Yelda Başaran
- Cardiology Department, School of Medicine, Marmara University, Istanbul, Turkey
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27
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Lee JH. Left Ventricular Diastolic Dyssynchrony in Post-Myocardial Infarction Patients: Does It Predict Future Left Ventricular Remodeling? J Cardiovasc Ultrasound 2016; 24:193-194. [PMID: 27721946 PMCID: PMC5050304 DOI: 10.4250/jcu.2016.24.3.193] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 09/05/2016] [Accepted: 09/06/2016] [Indexed: 11/22/2022] Open
Affiliation(s)
- Ju-Hee Lee
- Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Korea
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28
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Abstract
Cardiac control is mediated via a series of reflex control networks involving somata in the (i) intrinsic cardiac ganglia (heart), (ii) intrathoracic extracardiac ganglia (stellate, middle cervical), (iii) superior cervical ganglia, (iv) spinal cord, (v) brainstem, and (vi) higher centers. Each of these processing centers contains afferent, efferent, and local circuit neurons, which interact locally and in an interdependent fashion with the other levels to coordinate regional cardiac electrical and mechanical indices on a beat-to-beat basis. This control system is optimized to respond to normal physiological stressors (standing, exercise, and temperature); however, it can be catastrophically disrupted by pathological events such as myocardial ischemia. In fact, it is now recognized that autonomic dysregulation is central to the evolution of heart failure and arrhythmias. Autonomic regulation therapy is an emerging modality in the management of acute and chronic cardiac pathologies. Neuromodulation-based approaches that target select nexus points of this hierarchy for cardiac control offer unique opportunities to positively affect therapeutic outcomes via improved efficacy of cardiovascular reflex control. As such, understanding the anatomical and physiological basis for such control is necessary to implement effectively novel neuromodulation therapies. © 2016 American Physiological Society. Compr Physiol 6:1635-1653, 2016.
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Affiliation(s)
- Jeffrey L Ardell
- Los Angeles (UCLA) Cardiac Arrhythmia Center, David Geffen School of Medicine, University of California, Los Angeles, California, USA.,UCLA Neurocardiology Research Center of Excellence, David Geffen School of Medicine, Los Angeles, California, USA
| | - John Andrew Armour
- Los Angeles (UCLA) Cardiac Arrhythmia Center, David Geffen School of Medicine, University of California, Los Angeles, California, USA.,UCLA Neurocardiology Research Center of Excellence, David Geffen School of Medicine, Los Angeles, California, USA
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29
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Abate E, Hoogslag GE, Al Amri I, Debonnaire P, Wolterbeek R, Bax JJ, Delgado V, Marsan NA. Time course, predictors, and prognostic implications of significant mitral regurgitation after ST-segment elevation myocardial infarction. Am Heart J 2016; 178:115-25. [PMID: 27502859 DOI: 10.1016/j.ahj.2016.04.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 04/19/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND Ischemic mitral regurgitation (MR) is a known complication of ST-segment elevation myocardial infarction (STEMI) with important prognostic implications. We evaluated changes over time in ischemic MR after STEMI and the prevalence and predictors of significant (grade ≥2) MR at 12 months. Furthermore, the prognostic additional value of significant MR at 12-month follow-up over acute MR was assessed. METHODS STEMI patients (n = 1,599; 77% male; 60 ± 12 years) treated with primary percutaneous coronary intervention underwent echocardiography <48 hours of admission (baseline) and at 12 months. Mortality data were collected during long-term follow-up. RESULTS At baseline, significant MR was present in 103 (6%) patients. After 12 months, MR worsened ≥1 grade in 321 (20%) patients, remained stable in 963 (60%), and improved ≥1 grade in 315 (20%). Significant MR was present in 135 patients at 12 months (8%, P = .01 vs baseline). Age, left ventricular end-systolic volume, and significant MR at baseline were independently associated with significant MR at follow-up. During follow-up (median, 50 months), 121 (8%) patients died (40% of cardiovascular cause). Significant MR at follow-up was independently associated with all-cause (hazard ratio, 1.65, 95% CI, 1.02-2.99) and cardiovascular mortality (hazard ratio, 2.47; 95% CI, 1.24-4.92), also after adjusting for significant MR at baseline. CONCLUSIONS The prevalence of significant MR after STEMI increases over time. Age, baseline left ventricular end-systolic volume, and baseline significant MR are independently associated with significant MR at follow-up. Significant MR at 12 months is associated with subsequent all-cause and cardiovascular mortality and shows additional prognostic value over acute MR.
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30
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Di Tano G, Caretta G, De Maria R, Parolini M, Bassi L, Testa S, Pirelli S. Galectin-3 predicts left ventricular remodelling after anterior-wall myocardial infarction treated by primary percutaneous coronary intervention. Heart 2016; 103:71-77. [PMID: 27465055 DOI: 10.1136/heartjnl-2016-309673] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 07/04/2016] [Accepted: 07/10/2016] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES Despite modern reperfusion therapies, left ventricular remodelling (LVR) occurs frequently after an ST-elevated myocardial infarction (STEMI) and represents a strong predictor of mortality and heart failure. Galectin-3 (Gal-3), a novel biomarker involved in inflammation, tissue repair and fibrogenesis, might be a valuable predictor of LVR. METHODS We enrolled consecutively admitted patients with a first anterior STEMI and left anterior descending artery occlusion treated by primary percutaneous coronary intervention (pPCI). Gal-3, N-terminal pro-B-type natriuretic peptide (NT-proBNP), echocardiography and cardiovascular events were evaluated 48 hours after admission, at 1 and 6 months. LVR was defined as a ≥15% increase in LV end-systolic volume. RESULTS We recruited 103 patients (28% women, aged 64.6±12 years, LV ejection fraction 47±11%). Median baseline Gal-3 and NT-proBNP levels were 13.2 ng/mL (10.8-17.1 ng/mL) and 2132 pg/mL (1019-4860 pg/mL) respectively. During 6 months of follow-up, 4 patients dropped out, 7 died and 26 (28.3%) of the 92 survivors developed LVR (LVR+). LVR+ patients had higher Gal-3 levels at baseline, 1 and 6 months than LVR- (p<0.0001). By univariable logistic regression, age, female gender, higher baseline Gal-3 and NT-proBNP, smaller LV end-diastolic volume (LVEDV) were associated to an increased risk of LVR. By multivariable analysis, only LVEDV (OR 0.96, 95% CI 0.93 to 0.99/1 mL change) and Gal-3 levels (OR 1.22, 95% CI 1.06 to 1.42/1 ng/mL change) independently predicted LVR (C-statistics 0.84, 95% CI 0.75 to 0.93). CONCLUSION Gal-3 serum levels measured during hospitalisation could be clinically useful in predicting LVR among patients admitted with anterior STEMI treated by pPCI.
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Affiliation(s)
- Giuseppe Di Tano
- Division of Cardiology, ASST-Hospital of Cremona, Cremona, Italy
| | - Giorgio Caretta
- Division of Cardiology, ASST-Hospital of Cremona, Cremona, Italy.,Division of Cardiology, Sant'Andrea Hospital, La Spezia, Italy
| | - Renata De Maria
- CNR Clinical Physiology Institute Cardiothoracic and Vascular Department ASST-Great Metropolitan Hospital Niguarda, Milan, Italy
| | - Marina Parolini
- CNR Clinical Physiology Institute Cardiothoracic and Vascular Department ASST-Great Metropolitan Hospital Niguarda, Milan, Italy
| | - Laura Bassi
- Division of Laboratory Medicine, ASST-Hospital of Cremona, Cremona, Italy
| | - Sophie Testa
- Division of Laboratory Medicine, ASST-Hospital of Cremona, Cremona, Italy
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31
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Ardell JL, Andresen MC, Armour JA, Billman GE, Chen PS, Foreman RD, Herring N, O'Leary DS, Sabbah HN, Schultz HD, Sunagawa K, Zucker IH. Translational neurocardiology: preclinical models and cardioneural integrative aspects. J Physiol 2016; 594:3877-909. [PMID: 27098459 DOI: 10.1113/jp271869] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 03/14/2016] [Indexed: 12/15/2022] Open
Abstract
Neuronal elements distributed throughout the cardiac nervous system, from the level of the insular cortex to the intrinsic cardiac nervous system, are in constant communication with one another to ensure that cardiac output matches the dynamic process of regional blood flow demand. Neural elements in their various 'levels' become differentially recruited in the transduction of sensory inputs arising from the heart, major vessels, other visceral organs and somatic structures to optimize neuronal coordination of regional cardiac function. This White Paper will review the relevant aspects of the structural and functional organization for autonomic control of the heart in normal conditions, how these systems remodel/adapt during cardiac disease, and finally how such knowledge can be leveraged in the evolving realm of autonomic regulation therapy for cardiac therapeutics.
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Affiliation(s)
- J L Ardell
- University of California - Los Angeles (UCLA) Cardiac Arrhythmia Center, David Geffen School of Medicine, Los Angeles, CA, USA.,UCLA Neurocardiology Research Center of Excellence, David Geffen School of Medicine, Los Angeles, CA, USA
| | - M C Andresen
- Department of Physiology and Pharmacology, Oregon Health and Science University, Portland, OR, USA
| | - J A Armour
- University of California - Los Angeles (UCLA) Cardiac Arrhythmia Center, David Geffen School of Medicine, Los Angeles, CA, USA.,UCLA Neurocardiology Research Center of Excellence, David Geffen School of Medicine, Los Angeles, CA, USA
| | - G E Billman
- Department of Physiology and Cell Biology, The Ohio State University, Columbus, OH, USA
| | - P-S Chen
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - R D Foreman
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - N Herring
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - D S O'Leary
- Department of Physiology, Wayne State University, Detroit, MI, USA
| | - H N Sabbah
- Department of Medicine, Henry Ford Hospital, Detroit, MI, USA
| | - H D Schultz
- Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - K Sunagawa
- Department of Cardiovascular Medicine, Kyushu University, Fukuoka, Japan
| | - I H Zucker
- Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA
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Reindl M, Reinstadler SJ, Feistritzer HJ, Tiller C, Mayr A, Klug G, Metzler B. Heart rate and left ventricular adverse remodelling after ST-elevation myocardial infarction. Int J Cardiol 2016; 219:339-44. [PMID: 27348414 DOI: 10.1016/j.ijcard.2016.06.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 06/12/2016] [Indexed: 01/03/2023]
Abstract
BACKGROUND Discharge heart rate (HR) following ST-elevation myocardial infarction (STEMI) is a predictor of adverse left ventricular remodelling (LVR). However, the prognostic relevance of HR values in the earlier phase after revascularization is unknown. We aimed to investigate resting HR assessed at different time points during hospital stay following STEMI for the prediction of LVR. METHODS In this prospective observational study of 143 consecutive STEMI patients, HR was measured serially on admission (AHR), at day 1 (HRd1) and 2 (HRd2) following revascularization and finally at discharge (DHR). Cardiac magnetic resonance (CMR) scans were performed at baseline and 4months thereafter to evaluate LVR and major CMR determinants of LVR (infarct size, microvascular obstruction). LVR was defined as ≥15% increase of left ventricular end-diastolic volume. RESULTS Twenty-nine patients (20%) have developed LVR. HRd1 (80[72-88] vs. 71[62-79]bpm, p=0.003), HRd2 (74[64-83] vs. 67[59-78]bpm, p=0.04), DHR (74[62-81] vs. 64[58-73] bpm, p=0.008) and the mean HR of all measurements (76[68-82] vs. 67[60-77]bpm, p=0.004) were significantly higher in patients with LVR, whereas admission HR (75[68-85] vs. 70[60-82]bpm, p=0.12) did not differ significantly. The associations for all post-admission HRs remained significant after adjustment for clinical (high-sensitivity cardiac troponin T and C-reactive protein, left anterior descending artery as culprit) and CMR (infarct size, microvascular obstruction, ejection fraction) predictors of LVR. The predictive values of the post-admission HRs were equivalent (area under the curve differences: all p>0.05). CONCLUSION Besides DHR, resting HR values in the early stage following reperfusion are independent predictors of LVR after STEMI.
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Affiliation(s)
- Martin Reindl
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Sebastian Johannes Reinstadler
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Hans-Josef Feistritzer
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Christina Tiller
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Agnes Mayr
- University Clinic of Radiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Gert Klug
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Bernhard Metzler
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria.
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Predictors of ventricular remodelling in patients with reperfused acute myocardial infarction and left ventricular dysfunction candidates for bone marrow cell therapy: insights from the BONAMI trial. Eur J Nucl Med Mol Imaging 2015; 43:740-8. [PMID: 26666236 DOI: 10.1007/s00259-015-3279-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 12/01/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE Few data are available regarding the relation of left ventricular (LV) mechanical dyssynchrony to remodelling after acute myocardial infarction (MI) and stem cell therapy. We evaluated the 1-year time course of both LV mechanical dyssynchrony and remodelling in patients enrolled in the BONAMI trial, a randomized, multicenter controlled trial assessing cell therapy in patients with reperfused MI. METHODS Patients with acute MI and ejection fraction (EF) ≤ 45 % were randomized to cell therapy or to control and underwent thallium single-photon emission computed tomography (SPECT), radionuclide angiography, and echocardiography at baseline, 3 months, and 1 year. Eighty-three patients with a comprehensive 1-year follow-up were included. LV dyssynchrony was assessed by the standard deviation (SD) of the LV phase histogram using radionuclide angiography. Remodelling was defined as a 20 % increase in LV end-systolic volume index (LVESVI) at 1 year. RESULTS At baseline, LVEF, wall motion score index, and perfusion defect size were significantly impaired in the 43 patients (52 %) with LV remodelling (all p < 0.001), without significant increase in LV mechanical dyssynchrony. During follow-up, there was a progressive increase in LV SD (p = 0.01). Baseline independent predictors of LV remodelling were perfusion SPECT defect size (p = 0.001), LVEF (p = 0.01) and a history of hypertension (p = 0.043). Bone marrow cell therapy did not affect the time-course of LV remodelling and dyssynchrony. CONCLUSIONS LV remodelling 1 year after reperfused MI is associated with progressive LV dyssynchrony and is related to baseline infarct size and ejection fraction, without impact of cell therapy on this process.
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Beaumont E, Southerland EM, Hardwick JC, Wright GL, Ryan S, Li Y, KenKnight BH, Armour JA, Ardell JL. Vagus nerve stimulation mitigates intrinsic cardiac neuronal and adverse myocyte remodeling postmyocardial infarction. Am J Physiol Heart Circ Physiol 2015; 309:H1198-206. [PMID: 26276818 PMCID: PMC4666924 DOI: 10.1152/ajpheart.00393.2015] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 08/10/2015] [Indexed: 12/13/2022]
Abstract
This paper aims to determine whether chronic vagus nerve stimulation (VNS) mitigates myocardial infarction (MI)-induced remodeling of the intrinsic cardiac nervous system (ICNS), along with the cardiac tissue it regulates. Guinea pigs underwent VNS implantation on the right cervical vagus. Two weeks later, MI was produced by ligating the ventral descending coronary artery. VNS stimulation started 7 days post-MI (20 Hz, 0.9 ± 0.2 mA, 14 s on, 48 s off; VNS-MI, n = 7) and was compared with time-matched MI animals with sham VNS (MI n = 7) vs. untreated controls (n = 8). Echocardiograms were performed before and at 90 days post-MI. At termination, IC neuronal intracellular voltage recordings were obtained from whole-mount neuronal plexuses. MI increased left ventricular end systolic volume (LVESV) 30% (P = 0.027) and reduced LV ejection fraction (LVEF) 6.5% (P < 0.001) at 90 days post-MI compared with baseline. In the VNS-MI group, LVESV and LVEF did not differ from baseline. IC neurons showed depolarization of resting membrane potentials and increased input resistance in MI compared with VNS-MI and sham controls (P < 0.05). Neuronal excitability and sensitivity to norepinephrine increased in MI and VNS-MI groups compared with controls (P < 0.05). Synaptic efficacy, as determined by evoked responses to stimulating input axons, was reduced in VNS-MI compared with MI or controls (P < 0.05). VNS induced changes in myocytes, consistent with enhanced glycogenolysis, and blunted the MI-induced increase in the proapoptotic Bcl-2-associated X protein (P < 0.05). VNS mitigates MI-induced remodeling of the ICNS, correspondingly preserving ventricular function via both neural and cardiomyocyte-dependent actions.
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Affiliation(s)
- Eric Beaumont
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | - Elizabeth M Southerland
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | | | - Gary L Wright
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | - Shannon Ryan
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | - Ying Li
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | | | - J Andrew Armour
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee; Department of Medicine, University of California Los Angeles Health System, Los Angeles, California
| | - Jeffrey L Ardell
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee; Department of Medicine, University of California Los Angeles Health System, Los Angeles, California
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Stone GW, Chung ES, Stancak B, Svendsen JH, Fischer TM, Kueffer F, Ryan T, Bax J, Leon A. Peri-infarct zone pacing to prevent adverse left ventricular remodelling in patients with large myocardial infarction. Eur Heart J 2015; 37:484-93. [PMID: 26321236 DOI: 10.1093/eurheartj/ehv436] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 08/12/2015] [Indexed: 11/13/2022] Open
Abstract
AIMS We sought to determine whether peri-infarct pacing prevents left ventricular (LV) remodelling and improves functional and clinical outcomes in patients with large first myocardial infarction (MI). METHODS AND RESULTS A total of 126 patients at 27 international sites within 10 days of onset of anterior or non-anterior MI with creatine phosphokinase >3000 U/L and QRS duration ≤120 ms were randomized 1:1:1 to dual-site biventricular pacing vs. single-site LV only pacing vs. non-implanted control. The primary endpoint was the echocardiographic core laboratory-assessed change in LV end-diastolic volume (ΔLVEDV) from baseline to 18 months between the pooled pacing therapy groups and the control group. ΔLVEDV increased by 15.3 ± 28.6 mL in the control group and by 16.7 ± 30.5 mL in the pooled pacing groups during follow-up (adjusted mean difference (95% CI) = 0.6 (-12.3, 13.5) mL, P = 0.92). There were also no significant between-group differences in the change in LV end-systolic volume or ejection fraction over time. Quality of life, as assessed by the Minnesota Living with Heart Failure (HF) and European Quality of Life-5 Dimension questionnaires and New York Heart Association class, was also similar between groups during 18-month follow-up. Six-minute walk distance improved during follow-up to an equal degree between groups, and there were no significant differences in the 18-month rates of death or HF hospitalization between the pooled pacing therapy vs. control groups (17.4 vs. 21.7% respectively, P = 0.59). CONCLUSIONS In the present multicentre, randomized trial, peri-infarct pacing did not prevent LV remodelling or improve functional or clinical outcomes during 18-month follow-up in patients with large first MI. CLINICALTRIALSGOV IDENTIFIER NCT01213251.
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Affiliation(s)
- Gregg W Stone
- Columbia University Medical Center, New York-Presbyterian Hospital, and the Cardiovascular Research Foundation, 111 E. 59th St., 11th Floor, New York, NY 10022, USA
| | | | - Branislav Stancak
- Eastern Slovakia Institute for Cardiac and Vascular Diseases, Kosice, Slovakia
| | - Jesper H Svendsen
- Rigshospitalet and the University of Copenhagen, Copenhagen, Denmark
| | | | | | - Thomas Ryan
- The Ohio State University, Columbus, OH, USA
| | - Jeroen Bax
- Leiden University Medical Center, Leiden, The Netherlands
| | - Angel Leon
- Emory University School of Medicine, Atlanta, GA, USA
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Chung ES, Fischer TM, Kueffer F, Anand IS, Bax JJ, Gold MR, Gorman RC, Theres H, Udelson JE, Stancak B, Svendsen JH, Stone GW, Leon A. The Post–Myocardial Infarction Pacing Remodeling Prevention Therapy (PRomPT) Trial: Design and Rationale. J Card Fail 2015; 21:601-7. [DOI: 10.1016/j.cardfail.2015.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 02/02/2015] [Accepted: 03/10/2015] [Indexed: 11/29/2022]
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Siva Sankara C, Rajasekhar D, Vanajakshamma V, Praveen Kumar BS, Vamsidhar A. Prognostic significance of NT-proBNP, 3D LA volume and LV dyssynchrony in patients with acute STEMI undergoing primary percutaneous intervention. Indian Heart J 2015; 67:318-27. [PMID: 26304563 DOI: 10.1016/j.ihj.2015.04.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 04/14/2015] [Accepted: 04/25/2015] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVES The aim of the present study was to assess the short term prognostic significance of N-terminal pro BNP (NT-proBNP), 3D left atrial volume (LAV) and left ventricular (LV) dyssynchrony in patients of acute ST-elevation myocardial infarction (STEMI) who underwent primary Percutaneous intervention (PCI). BACKGROUND NT-proBNP, LV dyssynchrony and LAV in patients with acute coronary syndrome have been associated with PCI outcomes and predict the short and long-term prognosis. METHODS This study consisted of 142 patients with a first STEMI who underwent primary PCI. Baseline echocardiographic data was collected at admission and at 6 months follow up. Left ventricular dyssynchrony was measured by tissue Doppler imaging and LAV by real time 3D-echocardiography, plasma NT-proBNP levels were estimated between 72 and 96 h of admission. RESULTS During study period 3 patients expired and 4 developed congestive heart failure (CHF). Baseline NT-proBNP and LV dyssynchrony correlated with LV size and LV ejection fraction (LVEF) at baseline and during follow up. Patients with higher NT-proBNP levels and higher LV dyssynchrony showed significant increase in LV size with decrease in LVEF during follow-up. Baseline Left atrial volume index (LAVI) showed significant correlation with LV size but no association with LVEF at baseline and during follow-up. CONCLUSIONS Higher levels of NT-proBNP and higher LV dyssynchrony can predict patients with increase in LV size, worsening of LV systolic and diastolic function during follow-up. Patients with higher NT-proBNP levels at baseline developed CHF during follow-up.
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Affiliation(s)
- C Siva Sankara
- Senior Resident, Department of Cardiology, SVIMS, Tirupati, Andhra Pradesh, India
| | - D Rajasekhar
- Professor & Head, Department of Cardiology, SVIMS, Tirupati, Andhra Pradesh, India.
| | - V Vanajakshamma
- Professor, Department of Cardiology, SVIMS, Tirupati, Andhra Pradesh, India
| | - B S Praveen Kumar
- Assistant Professor, Department of Cardiology, SVIMS, Tirupati, Andhra Pradesh, India
| | - A Vamsidhar
- Senior Resident, Department of Cardiology, SVIMS, Tirupati, Andhra Pradesh, India
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Huang CH, Chang CC, Kuo CL, Huang CS, Lin CS, Liu CS. Decrease in plasma cyclophilin A concentration at 1 month after myocardial infarction predicts better left ventricular performance and synchronicity at 6 months: a pilot study in patients with ST elevation myocardial infarction. Int J Biol Sci 2015; 11:38-47. [PMID: 25552928 PMCID: PMC4278253 DOI: 10.7150/ijbs.10271] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 11/05/2014] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Cyclophilin A (CyPA) concentration increases in acute coronary syndrome. In an animal model of acute myocardial infarction, administration of angiotensin-converting-enzyme inhibitor was associated with lower left ventricular (LV) CyPA concentration and improved LV performance. This study investigated the relationships between changes in plasma CyPA concentrations and LV remodeling in patients with ST-elevation myocardial infarction (STEMI). METHODS AND RESULTS We enrolled 55 patients who underwent percutaneous coronary intervention for acute STEMI. Plasma CyPA, matrix metalloproteinase (MMP), interleukin-6 and high-sensitivity C-reactive protein concentrations were measured at baseline and at one-month follow-up. Echocardiography was performed at baseline and at one-, three-, and six-month follow-up. Patients with a decrease in baseline CyPA concentration at one-month follow-up (n = 28) had a significant increase in LV ejection fraction (LVEF) (from 60.2 ± 11.5% to 64.6 ± 9.9%, p < 0. 001) and preserved LV synchrony at six months. Patients without a decrease in CyPA concentration at one month (n = 27) did not show improvement in LVEF and had a significantly increased systolic dyssynchrony index (SDI) (from 1.170 ± 0.510% to 1.637 ± 1.299%, p = 0.042) at six months. Multiple linear regression analysis showed a significant association between one-month CyPA concentration and six-month LVEF. The one-month MMP-2 concentration was positively correlated with one-month CyPA concentration and LV SDI. Conclusions : Decreased CyPA concentration at one-month follow-up after STEMI was associated with better LVEF and SDI at six months. Changes in CyPA, therefore, may be a prognosticator of patient outcome.
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Affiliation(s)
- Ching-Hui Huang
- 1. Division of Cardiology, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan ; 2. Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Chia-Chu Chang
- 3. Division of Nephrology, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan ; 4. School of Medicine, Chung Shan Medical University, Taichung 404, Taiwan
| | - Chen-Ling Kuo
- 5. Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Ching-Shan Huang
- 5. Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Chih-Sheng Lin
- 2. Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Chin-San Liu
- 5. Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua 500, Taiwan ; 6. Department of Neurology, Changhua Christian Hospital, Changhua 500, Taiwan ; 7. Graduate Institute of Integrative Medicine, China Medical University, Taichung 404, Taiwan
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Liszka J, Haberka M, Tabor Z, Finik M, Gąsior Z. Two-dimensional speckle-tracking echocardiography assessment of left ventricular remodeling in patients after myocardial infarction and primary reperfusion. Arch Med Sci 2014; 10:1091-100. [PMID: 25624844 PMCID: PMC4296067 DOI: 10.5114/aoms.2014.47821] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 05/25/2013] [Accepted: 06/05/2013] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Left ventricular remodeling (LVR) is the most prognostically important consequence of acute myocardial infarction (AMI). The aim of the study was to assess the value of speckle tracking echocardiography in the prediction of left ventricular remodeling in patients after AMI and primary coronary angioplasty (PCI). MATERIAL AND METHODS Eighty-eight patients (F/M = 31/57 patients; 63.6 ±11 years old) with coronary artery disease (CAD) and successful PCI were enrolled and divided into group I with ST-elevation myocardial infarction or non-ST elevation myocardial infarction and group II with stable angina pectoris. Conventional and speckle tracking echocardiography was performed 3 days (baseline), 30 days and 90 days after PCI. Patients were divided into 2 groups based on the presence of LVR (increase of LV end-diastolic and/or end-systolic volume > 20%) at 3 months follow-up. RESULTS At initial presentation, 2-chamber longitudinal strain (9.4 ±3.5% vs. -11.6 ±3.6%, p < 0.04) and 4-chamber transverse strain (10.4 ±8.2% vs. 15.6 ±8%, p < 0.003) were lower in the LVR+ group compared to the LVR- group. LV wall motion score index did not differ between the two groups. After 30 days, circumferential apical and basal strain (-15.58 ±8.9% vs. -25.53 ±8.8%, p < 0.001; -15.02 ±5.6 vs. -19.78 ±6.3, p < 0.008), radial apical strain (9.96 ±8.4% vs. 14.15 ±5.5%, p < 0.03), 4-chamber longitudinal strain (-8.7 ±5.8% vs. -13.47 ±3.9%, p < 0.005), 4-chamber transverse strain (10.5 ±8.1% vs. 16.7 ±8.3%, p < 0.03), apical rotation (3.84 ±2.5° vs, 5.66 ±3.2°, p < 0.04) and torsion (6.15 ±4.1° vs. 8.98 ±4.6°, p < 0.03) were significantly decreased in the LVR+ group compared to the LVR- group. According to ROC analysis, circumferential apical strain > -15.92% (sensitivity 93%, specificity 59%, positive predictive value 90%) was the most powerful predictor of remodeling after primary PCI in AMI. CONCLUSIONS Our results suggest that impaired indices of LV deformation detected 3 days and 30 days after AMI may provide important predictive value in LV remodeling and patients' follow-up.
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Affiliation(s)
- Jerzy Liszka
- Department of Cardiology, Multidisciplinary Hospital, Jaworzno, Poland
| | - Maciej Haberka
- School of Health Sciences, Medical University of Silesia, Department of Cardiology, Katowice, Poland
| | - Zbigniew Tabor
- 1 Department of Cardiology, Medical University of Silesia, Katowice, Poland
| | - Maciej Finik
- Department of Cardiology, Multidisciplinary Hospital, Jaworzno, Poland
| | - Zbigniew Gąsior
- School of Health Sciences, Medical University of Silesia, Department of Cardiology, Katowice, Poland
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40
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Abate E, Hoogslag GE, Leong DP, Bertini M, Antoni ML, Nucifora G, Joyce E, Holman ER, Siebelink HMJ, Schalij MJ, Bax JJ, Delgado V, Ajmone Marsan N. Association between Multilayer Left Ventricular Rotational Mechanics and the Development of Left Ventricular Remodeling after Acute Myocardial Infarction. J Am Soc Echocardiogr 2014; 27:239-48. [DOI: 10.1016/j.echo.2013.12.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Indexed: 10/25/2022]
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41
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Joyce E, Hoogslag GE, Leong DP, Debonnaire P, Katsanos S, Boden H, Schalij MJ, Marsan NA, Bax JJ, Delgado V. Association between left ventricular global longitudinal strain and adverse left ventricular dilatation after ST-segment-elevation myocardial infarction. Circ Cardiovasc Imaging 2013; 7:74-81. [PMID: 24186962 DOI: 10.1161/circimaging.113.000982] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Myocardial infarct size is a major determinant of left ventricular (LV) remodeling after ST-segment-elevation myocardial infarction. We evaluated whether LV global longitudinal strain (GLS), proposed as a novel marker of infarct size, is associated with 3- and 6-month LV dilatation after ST-segment-elevation myocardial infarction. METHODS AND RESULTS In the first ST-segment-elevation myocardial infarction patients treated with primary percutaneous coronary intervention, baseline LVGLS was measured with 2-dimensional speckle-tracking echocardiography. Patients were dichotomized according to median value. The independent relationship between GLS groups and LV end-diastolic volume at 3 and 6 months (adjusted for clinical and echocardiographic variables) was assessed. The final study population comprised 1041 patients (60±12 years; 76% men). Median LVGLS was -15.0%. Patients with baseline LVGLS>-15.0% exhibited greater LV dilatation at 3 and 6 months compared with patients with GLS≤-15.0% (LV end-diastolic volume 123±44 versus 106±36 mL and 121±43 versus 102±34 mL, respectively; global group-time interaction P<0.001). This association retained the same statistical significance after adjustment for various relevant demographic, clinical, and echocardiographic characteristics. Further, net reclassification improvement index demonstrated significant incremental value of LVGLS for prediction of LV end-diastolic volume increase (0.14 [95% confidence interval, 0.00034-0.29]; P=0.04). CONCLUSIONS LVGLS before discharge after ST-segment-elevation myocardial infarction is independently associated with LV dilatation at follow-up.
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Affiliation(s)
- Emer Joyce
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
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42
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Santos ABS, Kraigher-Krainer E, Bello N, Claggett B, Zile MR, Pieske B, Voors AA, McMurray JJV, Packer M, Bransford T, Lefkowitz M, Shah AM, Solomon SD. Left ventricular dyssynchrony in patients with heart failure and preserved ejection fraction. Eur Heart J 2013; 35:42-7. [PMID: 24164863 DOI: 10.1093/eurheartj/eht427] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIMS Mechanical dyssynchrony has been postulated to play a pathophysiologic role in heart failure with preserved ejection fraction (HFpEF). METHODS AND RESULTS We quantified left ventricular (LV) systolic dyssynchrony in 130 HFpEF patients with NYHA class II-IV symptoms, ejection fraction (EF) ≥45%, and NT-proBNP levels >400 pg/mL enrolled in the PARAMOUNT trial, and compared them to 40 healthy controls of similar age and gender. Dyssynchrony was assessed by 2D speckle tracking as standard deviation (SD) of time to peak longitudinal systolic strain in 12 ventricular segments and related to measures of systolic and diastolic function. Heart failure with preserved ejection fraction patients (62% women, mean age of 71 ± 9 years, body mass index of 30.2 ± 5.9 kg/m(2), systolic blood pressure 139 ± 15 mmHg) demonstrated significantly greater dyssynchrony than controls (SD of time to peak longitudinal strain; 90.6 ± 50.9 vs. 56.4 ± 33.5 ms, P < 0.001), even in the subset of patients (n = 63) with LVEF ≥55% and narrow QRS (≤100 ms). Among HFpEF patients, dyssynchrony was related to wider QRS interval, higher LV mass, and lower early diastolic tissue Doppler myocardial velocity (E'). Greater dyssynchrony remained significantly associated with worse diastolic function even after restricting the analysis to patients with EF≥55% and adjusting for age, gender, systolic blood pressure, LV mass index, and LVEF. CONCLUSION Heart failure with preserved EF is associated with greater mechanical dyssynchrony compared with healthy controls of similar age and gender. Within an HFpEF population, the severity of dyssynchrony is related to the width of QRS complex, LV hypertrophy, and diastolic dysfunction.
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Affiliation(s)
- Angela B S Santos
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, 75 Francis St., Boston, MA 02445, USA
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Westholm C, Johnson J, Jernberg T, Winter R. The prognostic value of mechanical left ventricular dyssynchrony in patients with acute coronary syndrome. Cardiovasc Ultrasound 2013; 11:35. [PMID: 24119333 PMCID: PMC3852206 DOI: 10.1186/1476-7120-11-35] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Accepted: 10/07/2013] [Indexed: 12/02/2022] Open
Abstract
Background Echocardiography is a well-established tool for risk stratification in patients with acute coronary syndrome (ACS). ACS has significant impact on LV dyssynchrony, and detrimental effects on systolic function and long term outcome. The aims of this study were to determine whether LV dyssynchrony carries any predictive information in an unselected ACS population and to evaluate if it has any incremental value to the information given from conventional echocardiographic measurements. Methods The study included 227 consecutive ACS patients. Primary endpoint was the composite of death, new MI, or rehospitalisation due to heart failure. Dyssynchrony was measured as intersegmental variation of time to peak strain, the post systolic index (PSI) and myocardial performance index (MPI) with the standard deviation and difference between lowest and highest value (delta) expressing the amount of dyssynchrony. Septal-lateral delay was also tested. All dyssynchrony parameters were compared with Ejection fraction (EF). Results The median follow up time was 53 months. 85 patients reached the combined endpoint. Patients with and without a subsequent combined endpoint differed significantly regarding calculated SD: s and delta-value for PSI, time to peak 2D-strain and MPI but not regarding septal-lateral delay. In ROC-analysis none of the dyssynchrony parameters had larger AUC than EF. When adjusting for traditional risk factors none of the dyssynchrony parameters remained associated with outcome, whereas EF still did. Conclusion LV dyssynchrony seem to have significant prognostic information in patient with acute coronary syndrome but in comparison to conventional parameters such as EF there is no incremental value of this information.
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Affiliation(s)
- Carl Westholm
- Department of Medicine, Section of Cardiology, Huddinge, Karolinska Institutet, Stockholm, Sweden.
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Cerisano G, Buonamici P, Valenti R, Sciagrà R, Raspanti S, Santini A, Carrabba N, Dovellini EV, Romito R, Pupi A, Colonna P, Antoniucci D. Early short-term doxycycline therapy in patients with acute myocardial infarction and left ventricular dysfunction to prevent the ominous progression to adverse remodelling: the TIPTOP trial. Eur Heart J 2013; 35:184-91. [PMID: 24104875 DOI: 10.1093/eurheartj/eht420] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIMS Experimental studies suggest that doxycycline attenuates post-infarction remodelling and exerts protective effects on myocardial ischaemia/reperfusion injury. However, the effects of the drug in the clinical setting are unknown. The aim of this study was to examine the effect of doxycycline on left ventricular (LV) remodelling in patients with acute ST-segment elevation myocardial infarction (STEMI) and LV dysfunction. METHODS AND RESULTS Open-label, randomized, phase II trial. Immediately after primary percutaneous coronary intervention, patients with STEMI and LV ejection fraction < 40% were randomly assigned to doxycycline (100 mg b.i.d. for 7 days) in addition to standard therapy, or to standard care. The echo LV end-diastolic volumes index (LVEDVi) was determined at baseline and 6 months. (99m)Tc-Sestamibi-single-photon emission computed tomography infarct size and severity were assessed at 6 months. We calculated a sample size of 110 patients, assuming that doxycycline may reduce the increase in the LVEDVi from baseline to 6 months > 50% compared with the standard therapy (statistical power > 80% with a type I error = 0.05). The 6-month changes in %LVEDVi were significant smaller in the doxycycline group than in the control group [0.4% (IQR: -16.0 to 14.2%) vs.13.4% (IQR: -7.9 to 29.3%); P = 0.012], as well as infarct size [5.5% (IQR: 0 to 18.8%) vs. 10.4% (IQR: 0.3 to 29.9%) P = 0.052], and infarct severity [0.53 (IQR: 0.43-0.62) vs. 0.44 (IQR: 0.29-0.60), P = 0.014], respectively. CONCLUSION In patients with acute STEMI and LV dysfunction, doxycycline reduces the adverse LV remodelling for comparable definite myocardial infarct size (NCT00469261).
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Affiliation(s)
- Giampaolo Cerisano
- Division of Cardiology, University of Florence, Careggi Hospital, Largo Brambilla 3, Florence I-50141, Italy
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Intramyocardial injection of autologous bone marrow-derived ex vivo expanded mesenchymal stem cells in acute myocardial infarction patients is feasible and safe up to 5 years of follow-up. J Cardiovasc Transl Res 2013; 6:816-25. [PMID: 23982478 PMCID: PMC3790917 DOI: 10.1007/s12265-013-9507-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 08/15/2013] [Indexed: 12/21/2022]
Abstract
In experimental studies, mesenchymal stem cell (MSC) transplantation in acute myocardial infarction (AMI) models has been associated with enhanced neovascularization and myogenesis. Clinical data however, are scarce. Therefore, the present study evaluates the safety and feasibility of intramyocardial MSC injection in nine patients, shortly after AMI during short-term and 5-year follow-up. Periprocedural safety analysis demonstrated one transient ischemic attack. No other adverse events related to MSC treatment were observed during 5-year follow-up. Clinical events were compared to a nonrandomized control group comprising 45 matched controls. A 5-year event-free survival after MSC-treatment was comparable to controls (89 vs. 91 %, P = 0.87). Echocardiographic imaging for evaluation of left ventricular function demonstrated improvements up to 5 years after MSC treatment. These findings were not significantly different when compared to controls. The present safety and feasibility study suggest that intramyocardial injection of MSC in patients shortly after AMI is feasible and safe up to 5-year follow-up.
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Relationship between left ventricular dyssynchrony and systolic dysfunction is independent of impaired left ventricular myocardial perfusion in heart failure: Assessment with 99mTc-sestamibi gated myocardial scintigraphy. Int J Cardiol 2013; 167:930-5. [DOI: 10.1016/j.ijcard.2012.03.091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2011] [Revised: 01/13/2012] [Accepted: 03/03/2012] [Indexed: 11/22/2022]
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Yamada S, Nelson TJ, Kane GC, Martinez-Fernandez A, Crespo-Diaz RJ, Ikeda Y, Perez-Terzic C, Terzic A. Induced pluripotent stem cell intervention rescues ventricular wall motion disparity, achieving biological cardiac resynchronization post-infarction. J Physiol 2013; 591:4335-49. [PMID: 23568891 PMCID: PMC3779120 DOI: 10.1113/jphysiol.2013.252288] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Dyssynchronous myocardial motion aggravates cardiac pump function. Cardiac resynchronization using pacing devices is a standard-of-care in the management of heart failure. Post-infarction, however, scar tissue formation impedes the efficacy of device-based therapy. The present study tests a regenerative approach aimed at targeting the origin of abnormal motion to prevent dyssynchronous organ failure. Induced pluripotent stem (iPS) cells harbour a reparative potential, and were here bioengineered from somatic fibroblasts reprogrammed with the stemness factors OCT3/4, SOX2, KLF4, and c-MYC. In a murine infarction model, within 30 min of coronary ligation, iPS cells were delivered to mapped infarcted areas. Focal deformation and dysfunction underlying progressive heart failure was resolved prospectively using speckle-tracking imaging. Tracked at high temporal and spatial resolution, regional iPS cell transplantation restored, within 10 days post-infarction, the contractility of targeted infarcted foci and nullified conduction delay in adjacent non-infarcted regions. Local iPS cell therapy, but not delivery of parental fibroblasts or vehicle, prevented or normalized abnormal strain patterns correcting the decrease in peak strain, disparity of time-to-peak strain, and pathological systolic stretch. Focal benefit of iPS cell intervention translated into improved left ventricular conduction and contractility, reduced scar, and reversal of structural remodelling, protecting from organ decompensation. Thus, in ischaemic cardiomyopathy, targeted iPS cell transplantation synchronized failing ventricles, offering a regenerative strategy to achieve biological resynchronization.
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Affiliation(s)
- Satsuki Yamada
- A. Terzic: Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
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48
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Conte L, Fabiani I, Barletta V, Giannini C, Leo LA, Delle Donne MG, Palagi C, Nardi C, Dini FL, Petronio AS, Marzilli M, Di Bello V. The role of cardiovascular imaging to understand the different patterns of post-ischemic remodeling. J Cardiovasc Echogr 2012. [DOI: 10.1016/j.jcecho.2012.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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49
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Manka R, Kozerke S, Rutz AK, Stoeck CT, Boesiger P, Schwitter J. A CMR study of the effects of tissue edema and necrosis on left ventricular dyssynchrony in acute myocardial infarction: implications for cardiac resynchronization therapy. J Cardiovasc Magn Reson 2012; 14:47. [PMID: 22805613 PMCID: PMC3438038 DOI: 10.1186/1532-429x-14-47] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 06/19/2012] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND In acute myocardial infarction (AMI), both tissue necrosis and edema are present and both might be implicated in the development of intraventricular dyssynchrony. However, their relative contribution to transient dyssynchrony is not known. Cardiovascular magnetic resonance (CMR) can detect necrosis and edema with high spatial resolution and it can quantify dyssynchrony by tagging techniques. METHODS Patients with a first AMI underwent percutaneous coronary interventions (PCI) of the infarct-related artery within 24 h of onset of chest pain. Within 5-7 days after the event and at 4 months, CMR was performed. The CMR protocol included the evaluation of intraventricular dyssynchrony by applying a novel 3D-tagging sequence to the left ventricle (LV) yielding the CURE index (circumferential uniformity ratio estimate; 1 = complete synchrony). On T2-weighted images, edema was measured as high-signal (> 2 SD above remote tissue) along the LV mid-myocardial circumference on 3 short-axis images (% of circumference corresponding to the area-at-risk). In analogy, on late-gadolinium enhancement (LGE) images, necrosis was quantified manually as percentage of LV mid-myocardial circumference on 3 short-axis images. Necrosis was also quantified on LGE images covering the entire LV (expressed as % LV mass). Finally, salvaged myocardium was calculated as the area-at-risk minus necrosis (expressed as % of LV circumference). RESULTS After successful PCI (n = 22, 2 female, mean age: 57 ± 12y), peak troponin T was 20 ± 36ug/l and the LV ejection fraction on CMR was 41 ± 8%. Necrosis mass was 30 ± 10% and CURE was 0.91 ± 0.05. Edema was measured as 58 ± 14% of the LV circumference. In the acute phase, the extent of edema correlated with dyssynchrony (r2 = -0.63, p < 0.01), while extent of necrosis showed borderline correlation (r2 = -0.19, p = 0.05). PCI resulted in salvaged myocardium of 27 ± 14%. LV dyssynchrony (=CURE) decreased at 4 months from 0.91 ± 0.05 to 0.94 ± 0.03 (p < 0.004, paired t-test). At 4 months, edema was absent and scar %LV slightly shrunk to 23.7 ± 10.0% (p < 0.002 vs baseline). Regression of LV dyssynchrony during the 4 months follow-up period was predicted by both, the extent of edema and its necrosis component in the acute phase. CONCLUSIONS In the acute phase of infarction, LV dyssynchrony is closely related to the extent of edema, while necrosis is a poor predictor of acute LV dyssynchrony. Conversely, regression of intraventricular LV dyssynchrony during infarct healing is predicted by the extent of necrosis in the acute phase.
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MESH Headings
- Angioplasty, Balloon, Coronary
- Cardiac Resynchronization Therapy
- Diagnosis, Differential
- Disease Progression
- Edema, Cardiac/complications
- Edema, Cardiac/diagnosis
- Female
- Follow-Up Studies
- Heart Ventricles/pathology
- Heart Ventricles/physiopathology
- Humans
- Imaging, Three-Dimensional
- Magnetic Resonance Imaging, Cine/methods
- Male
- Middle Aged
- Myocardial Infarction/complications
- Myocardial Infarction/diagnosis
- Myocardial Infarction/therapy
- Necrosis/complications
- Necrosis/diagnosis
- Prognosis
- Retrospective Studies
- Ventricular Dysfunction, Left/diagnosis
- Ventricular Dysfunction, Left/etiology
- Ventricular Dysfunction, Left/therapy
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Affiliation(s)
- Robert Manka
- Institute for Biomedical Engineering, University and ETH Zurich, Zurichm, Switzerland
- Department of Cardiology, University Hospital, Zurich, Switzerland
| | - Sebastian Kozerke
- Institute for Biomedical Engineering, University and ETH Zurich, Zurichm, Switzerland
| | - Andrea K Rutz
- Institute for Biomedical Engineering, University and ETH Zurich, Zurichm, Switzerland
| | - Christian T Stoeck
- Institute for Biomedical Engineering, University and ETH Zurich, Zurichm, Switzerland
| | - Peter Boesiger
- Institute for Biomedical Engineering, University and ETH Zurich, Zurichm, Switzerland
| | - Juerg Schwitter
- Centre Hospitalier Universitaire Vaudois, CHUV, Rue du Burgon 21, Lausanne, 1011, Switzerland
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50
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Nucifora G, Bertini M, Ajmone Marsan N, Scholte AJ, Siebelink HMJ, Holman ER, Schalij MJ, van der Wall EE, Bax JJ, Delgado V. Temporal evolution of left ventricular dyssynchrony after myocardial infarction: relation with changes in left ventricular systolic function. Eur Heart J Cardiovasc Imaging 2012; 13:1041-6. [DOI: 10.1093/ehjci/jes095] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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