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Almeida ALC, Melo MDTD, Bihan DCDSL, Vieira MLC, Pena JLB, Del Castillo JM, Abensur H, Hortegal RDA, Otto MEB, Piveta RB, Dantas MR, Assef JE, Beck ALDS, Santo THCE, Silva TDO, Salemi VMC, Rocon C, Lima MSM, Barberato SH, Rodrigues AC, Rabschkowisky A, Frota DDCR, Gripp EDA, Barretto RBDM, Silva SME, Cauduro SA, Pinheiro AC, Araujo SPD, Tressino CG, Silva CES, Monaco CG, Paiva MG, Fisher CH, Alves MSL, Grau CRPDC, Santos MVCD, Guimarães ICB, Morhy SS, Leal GN, Soares AM, Cruz CBBV, Guimarães Filho FV, Assunção BMBL, Fernandes RM, Saraiva RM, Tsutsui JM, Soares FLDJ, Falcão SNDRS, Hotta VT, Armstrong ADC, Hygidio DDA, Miglioranza MH, Camarozano AC, Lopes MMU, Cerci RJ, Siqueira MEMD, Torreão JA, Rochitte CE, Felix A. Position Statement on the Use of Myocardial Strain in Cardiology Routines by the Brazilian Society of Cardiology's Department Of Cardiovascular Imaging - 2023. Arq Bras Cardiol 2023; 120:e20230646. [PMID: 38232246 DOI: 10.36660/abc.20230646] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024] Open
Abstract
Central Illustration : Position Statement on the Use of Myocardial Strain in Cardiology Routines by the Brazilian Society of Cardiology's Department Of Cardiovascular Imaging - 2023 Proposal for including strain in the integrated diastolic function assessment algorithm, adapted from Nagueh et al.67 Am: mitral A-wave duration; Ap: reverse pulmonary A-wave duration; DD: diastolic dysfunction; LA: left atrium; LASr: LA strain reserve; LVGLS: left ventricular global longitudinal strain; TI: tricuspid insufficiency. Confirm concentric remodeling with LVGLS. In LVEF, mitral E wave deceleration time < 160 ms and pulmonary S-wave < D-wave are also parameters of increased filling pressure. This algorithm does not apply to patients with atrial fibrillation (AF), mitral annulus calcification, > mild mitral valve disease, left bundle branch block, paced rhythm, prosthetic valves, or severe primary pulmonary hypertension.
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Affiliation(s)
| | | | | | - Marcelo Luiz Campos Vieira
- Instituto do Coração da Faculdade de Medicina da Universidade de São Paulo (Incor/FMUSP), São Paulo, SP - Brasil
| | - José Luiz Barros Pena
- Faculdade Ciências Médicas de Minas Gerais, Belo Horizonte, MG - Brasil
- Hospital Felicio Rocho, Belo Horizonte, MG - Brasil
| | | | - Henry Abensur
- Beneficência Portuguesa de São Paulo, São Paulo, SP - Brasil
| | | | | | | | | | | | | | | | | | - Vera Maria Cury Salemi
- Instituto do Coração da Faculdade de Medicina da Universidade de São Paulo (Incor/FMUSP), São Paulo, SP - Brasil
| | - Camila Rocon
- Hospital do Coração (HCor), São Paulo, SP - Brasil
| | - Márcio Silva Miguel Lima
- Instituto do Coração da Faculdade de Medicina da Universidade de São Paulo (Incor/FMUSP), São Paulo, SP - Brasil
| | | | | | | | | | - Eliza de Almeida Gripp
- Hospital Pró-Cardiaco, Rio de Janeiro, RJ - Brasil
- Hospital Universitário Antônio Pedro da Universidade Federal Fluminense (UFF), Rio de Janeiro, RJ - Brasil
| | | | | | | | | | | | | | | | | | | | | | | | | | - Maria Veronica Camara Dos Santos
- Departamento de Cardiologia Pediátrica (DCC/CP) da Sociedade Brasileira de Cardiologia (SBC), São Paulo, SP - Brasil
- Sociedade Brasileira de Oncologia Pediátrica, São Paulo, SP - Brasil
| | | | | | - Gabriela Nunes Leal
- Instituto da Criança e do Adolescente do Hospital das Clinicas Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP - Brasil
| | | | | | | | | | | | | | | | | | | | - Viviane Tiemi Hotta
- Instituto do Coração da Faculdade de Medicina da Universidade de São Paulo (Incor/FMUSP), São Paulo, SP - Brasil
- Grupo Fleury, São Paulo, SP - Brasil
| | | | - Daniel de Andrade Hygidio
- Hospital Nossa Senhora da Conceição, Tubarão, SC - Brasil
- Universidade do Sul de Santa Catarina (UNISUL), Tubarão, SC - Brasil
| | - Marcelo Haertel Miglioranza
- EcoHaertel - Hospital Mae de Deus, Porto Alegre, RS - Brasil
- Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS - Brasil
| | | | | | | | | | - Jorge Andion Torreão
- Hospital Santa Izabel, Salvador, BA - Brasil
- Santa Casa da Bahia, Salvador, BA - Brasil
| | - Carlos Eduardo Rochitte
- Instituto do Coração da Faculdade de Medicina da Universidade de São Paulo (Incor/FMUSP), São Paulo, SP - Brasil
- Hospital do Coração (HCor), São Paulo, SP - Brasil
| | - Alex Felix
- Diagnósticos da América SA (DASA), São Paulo, SP - Brasil
- Instituto Nacional de Cardiologia (INC), Rio de Janeiro, RJ - Brasil
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Song Y, Chen X, Yang K, Dong Z, Cui C, Zhao K, Cheng H, Ji K, Lu M, Zhao S. Cardiac MRI-derived Myocardial Fibrosis and Ventricular Dyssynchrony Predict Response to Cardiac Resynchronization Therapy in Patients with Nonischemic Dilated Cardiomyopathy. Radiol Cardiothorac Imaging 2023; 5:e220127. [PMID: 37908550 PMCID: PMC10613947 DOI: 10.1148/ryct.220127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 06/05/2023] [Accepted: 08/22/2023] [Indexed: 11/02/2023]
Abstract
Purpose To determine the association of myocardial fibrosis and left ventricular (LV) dyssynchrony measured using cardiac MRI with late gadolinium enhancement (LGE) and feature tracking (FT), respectively, with response to cardiac resynchronization therapy (CRT) for nonischemic dilated cardiomyopathy (DCM). Materials and Methods This retrospective study included 98 patients (mean age, 59 years ± 10 [SD]; 54 men) who had nonischemic DCM, as assessed with LGE cardiac MRI before CRT. Cardiac MRI FT-derived dyssynchrony was defined as the SD of the time-to-peak strain (TTP-SD) of the LV segments in three directions (longitudinal, radial, and circumferential). CRT response was defined as a 15% increase in LV ejection fraction (LVEF) at echocardiography at 6-month follow-up, and then, long-term cardiovascular events were assessed. The likelihood ratio test was used to evaluate the incremental prognostic value of LGE and dyssynchrony parameters. Results Seventy-one (72%) patients showed a favorable LVEF response following CRT. LGE presence (odds ratio: 0.14 [95% CI: 0.04, 0.47], P = .002; and hazard ratio: 3.52 [95% CI: 1.37, 9.07], P = .01) and lower circumferential TTP-SD (odds ratio: 1.04 [95% CI: 1.02, 1.07], P = .002; and hazard ratio: 0.98 [95% CI: 0.96, 1.00], P = .03) were independently associated with LVEF nonresponse and long-term outcomes. Combined LGE and circumferential TTP-SD provided the highest discrimination for LVEF nonresponse (area under the receiver operating characteristic curve [AUC]: 0.89 [95% CI: 0.81, 0.94], sensitivity: 84.5% [95% CI: 74.0%, 92.0%], specificity: 85.2% [95% CI: 66.3%, 95.8%]) and long-term outcomes (AUC: 0.84 [95% CI: 0.75, 0.91], sensitivity: 76.9% [95% CI: 56.4%, 91.0%], specificity: 87.0% [95% CI: 76.7%, 93.9%]). Conclusion Myocardial fibrosis and lower circumferential dyssynchrony assessed with pretherapy cardiac MRI were independently associated with unfavorable LVEF response and long-term events following CRT in patients with nonischemic DCM and may provide incremental value in predicting prognosis.Keywords: MR Imaging, Cardiac, Outcomes Analysis Supplemental material is available for this article. © RSNA, 2023.
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Affiliation(s)
| | | | - Kai Yang
- From the Department of Magnetic Resonance Imaging (Y.S., X.C., K.Y.,
Z.D., C.C., K.J., M.L., S.Z.), Department of Function Test Center (H.C.), and
Department of Radiology Imaging Center (S.Z.), Fuwai Hospital, National Center
for Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease,
Chinese Academy of Medical Sciences and Peking Union Medical College, 167
Beilishi Road, Xi Cheng District, Beijing 100037, China; and Paul C. Lauterbur
Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, China
(K.Z.)
| | - Zhixiang Dong
- From the Department of Magnetic Resonance Imaging (Y.S., X.C., K.Y.,
Z.D., C.C., K.J., M.L., S.Z.), Department of Function Test Center (H.C.), and
Department of Radiology Imaging Center (S.Z.), Fuwai Hospital, National Center
for Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease,
Chinese Academy of Medical Sciences and Peking Union Medical College, 167
Beilishi Road, Xi Cheng District, Beijing 100037, China; and Paul C. Lauterbur
Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, China
(K.Z.)
| | - Chen Cui
- From the Department of Magnetic Resonance Imaging (Y.S., X.C., K.Y.,
Z.D., C.C., K.J., M.L., S.Z.), Department of Function Test Center (H.C.), and
Department of Radiology Imaging Center (S.Z.), Fuwai Hospital, National Center
for Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease,
Chinese Academy of Medical Sciences and Peking Union Medical College, 167
Beilishi Road, Xi Cheng District, Beijing 100037, China; and Paul C. Lauterbur
Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, China
(K.Z.)
| | - Kankan Zhao
- From the Department of Magnetic Resonance Imaging (Y.S., X.C., K.Y.,
Z.D., C.C., K.J., M.L., S.Z.), Department of Function Test Center (H.C.), and
Department of Radiology Imaging Center (S.Z.), Fuwai Hospital, National Center
for Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease,
Chinese Academy of Medical Sciences and Peking Union Medical College, 167
Beilishi Road, Xi Cheng District, Beijing 100037, China; and Paul C. Lauterbur
Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, China
(K.Z.)
| | - Huaibing Cheng
- From the Department of Magnetic Resonance Imaging (Y.S., X.C., K.Y.,
Z.D., C.C., K.J., M.L., S.Z.), Department of Function Test Center (H.C.), and
Department of Radiology Imaging Center (S.Z.), Fuwai Hospital, National Center
for Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease,
Chinese Academy of Medical Sciences and Peking Union Medical College, 167
Beilishi Road, Xi Cheng District, Beijing 100037, China; and Paul C. Lauterbur
Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, China
(K.Z.)
| | - Keshan Ji
- From the Department of Magnetic Resonance Imaging (Y.S., X.C., K.Y.,
Z.D., C.C., K.J., M.L., S.Z.), Department of Function Test Center (H.C.), and
Department of Radiology Imaging Center (S.Z.), Fuwai Hospital, National Center
for Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease,
Chinese Academy of Medical Sciences and Peking Union Medical College, 167
Beilishi Road, Xi Cheng District, Beijing 100037, China; and Paul C. Lauterbur
Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, China
(K.Z.)
| | - Minjie Lu
- From the Department of Magnetic Resonance Imaging (Y.S., X.C., K.Y.,
Z.D., C.C., K.J., M.L., S.Z.), Department of Function Test Center (H.C.), and
Department of Radiology Imaging Center (S.Z.), Fuwai Hospital, National Center
for Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease,
Chinese Academy of Medical Sciences and Peking Union Medical College, 167
Beilishi Road, Xi Cheng District, Beijing 100037, China; and Paul C. Lauterbur
Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, China
(K.Z.)
| | - Shihua Zhao
- From the Department of Magnetic Resonance Imaging (Y.S., X.C., K.Y.,
Z.D., C.C., K.J., M.L., S.Z.), Department of Function Test Center (H.C.), and
Department of Radiology Imaging Center (S.Z.), Fuwai Hospital, National Center
for Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease,
Chinese Academy of Medical Sciences and Peking Union Medical College, 167
Beilishi Road, Xi Cheng District, Beijing 100037, China; and Paul C. Lauterbur
Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, China
(K.Z.)
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Gurgu A, Luca CT, Vacarescu C, Petrescu L, Goanta EV, Lazar MA, Arnăutu DA, Cozma D. Considering Diastolic Dyssynchrony as a Predictor of Favorable Response in LV-Only Fusion Pacing Cardiac Resynchronization Therapy. Diagnostics (Basel) 2023; 13:diagnostics13061186. [PMID: 36980494 PMCID: PMC10047065 DOI: 10.3390/diagnostics13061186] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/23/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Background: CRT improves systolic and diastolic function, increasing cardiac output. Aim of the study: to assess the outcome of LV diastolic dyssynchrony in a population of fusion pacing CRT. Methods: Diastolic dyssynchrony was measured by offline speckle-tracking-derived TDI timing assessment of the simultaneity of E″ and A″ basal septal and lateral walls. New parameters introduced: E″ and, respectively, A″ time (E″T/A″T) as the time difference between E″ (respectively, A″) peak septal and lateral wall. Patients were divided into super-responders (SR), responders (R), and non-responders (NR). Results: Baseline characteristics: 62 pts (62 ± 11 y.o.) with idiopathic DCM, EF 27 ± 5.2%; 29% type III diastolic dysfunction (DD), 63% type II, 8% type I. Average follow-up 45 ± 19 months: LVEF 37 ± 7.9%, 34%SR, 61%R, 5%NR. The E″T decreased from 90 ± 20 ms to 25 ± 10 ms in SR with significant LV reverse remodeling (LV end-diastolic volume 193.7 ± 81 vs. 243.2 ± 82 mL at baseline, p < 0.0028) and lower LV filling pressures (E/E' 13.2 ± 4.6 vs. 11.4 ± 4.5, p = 0.0295). DD profile improved in 65% of R with a reduction in E/E' ratio (21 ± 9 vs. 14 ± 4 ms, p < 0.0001). Significant cut-off value calculated by ROC curve for LV diastolic dyssynchrony is E″T > 80 ms and A″T > 30 msec. Conclusions: The study identifies the cut-off values of diastolic dyssynchrony parameters as predictors of favorable outcomes in responders and super-responder patients with fusion CRT pacing. These findings may have important implications in patient selection and follow-up.
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Affiliation(s)
- Andra Gurgu
- Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania
- Research Center of the Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
| | - Constantin-Tudor Luca
- Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania
- Research Center of the Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
- Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
| | - Cristina Vacarescu
- Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania
- Research Center of the Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
- Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
| | - Lucian Petrescu
- Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania
| | - Emilia-Violeta Goanta
- Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania
- Research Center of the Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
| | - Mihai-Andrei Lazar
- Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania
- Research Center of the Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
- Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
| | - Diana-Aurora Arnăutu
- Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania
- Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
| | - Dragos Cozma
- Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania
- Research Center of the Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
- Institute of Cardiovascular Diseases Timisoara, 13A Gheorghe Adam Street, 300310 Timisoara, Romania
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Left Ventricular "Longitudinal Rotation" and Conduction Abnormalities-A New Outlook on Dyssynchrony. J Clin Med 2023; 12:jcm12030745. [PMID: 36769391 PMCID: PMC9917432 DOI: 10.3390/jcm12030745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/24/2022] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND The complete left bundle branch block (CLBBB) results in ventricular dyssynchrony and a reduction in systolic and diastolic efficiency. We noticed a distinct clockwise rotation of the left ventricle (LV) in patients with CLBBB ("longitudinal rotation"). AIM The aim of this study was to quantify the "longitudinal rotation" of the LV in patients with CLBBB in comparison to patients with normal conduction or complete right bundle branch block (CRBBB). METHODS Sixty consecutive patients with normal QRS, CRBBB, or CLBBB were included. Stored raw data DICOM 2D apical-4 chambers view images cine clips were analyzed using EchoPac plugin version 203 (GE Vingmed Ultrasound AS, Horten, Norway). In EchoPac-Q-Analysis, 2D strain application was selected. Instead of apical view algorithms, the SAX-MV (short axis-mitral valve level) algorithm was selected for analysis. A closed loop endocardial contour was drawn to initiate the analysis. The "posterior" segment (representing the mitral valve) was excluded before finalizing the analysis. Longitudinal rotation direction, peak angle, and time-to-peak rotation were recorded. RESULTS All patients with CLBBB (n = 21) had clockwise longitudinal rotation with mean four chamber peak rotation angle of -3.9 ± 2.4°. This rotation is significantly larger than in patients with normal QRS (-1.4 ± 3°, p = 0.005) and CRBBB (0.1 ± 2.2°, p = 0.00001). Clockwise rotation was found to be correlated to QRS duration in patients with the non-RBBB pattern. The angle of rotation was not associated with a lower ejection fraction or the presence of regional wall abnormalities. CONCLUSIONS Significant clockwise longitudinal rotation was found in CLBBB patients compared to normal QRS or CRBBB patients using speckle-tracking echocardiography.
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Rodero C, Strocchi M, Lee AWC, Rinaldi CA, Vigmond EJ, Plank G, Lamata P, Niederer SA. Impact of anatomical reverse remodelling in the design of optimal quadripolar pacing leads: A computational study. Comput Biol Med 2022; 140:105073. [PMID: 34852973 PMCID: PMC8752960 DOI: 10.1016/j.compbiomed.2021.105073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 11/28/2022]
Abstract
Lead position is an important factor in determining response to Cardiac Resynchronization Therapy (CRT) in dyssynchronous heart failure (HF) patients. Multipoint pacing (MPP) enables pacing from multiple electrodes within the same lead, improving the potential outcome for patients. Virtual quadripolar lead designs were evaluated by simulating pacing from all combinations of 1 and 2 electrodes along the lead in each virtual patient from cohorts of HF (n = 24) and simulated reverse remodelled (RR, n = 20) patients. Electrical synchrony was assessed by the time 90% of the ventricular myocardium is activated (AT090). Optimal 1 and 2 electrode pacing configurations for AT090 were combined to identify the 4-electrode lead design that maximised benefits across all patients. LV pacing in the HF cohort in all possible single and double electrode locations reduced AT090 by 14.48 ± 5.01 ms (11.92 ± 3.51%). The major determinant of reduction in activation time was patient anatomy. Pacing with a single optimal lead design reduced AT090 more in the HF cohort than the RR cohort (12.68 ± 3.29% vs 10.81 ± 2.34%). Pacing with a single combined HF and RR population-optimised lead design achieves electrical resynchronization with near equivalence to personalised lead designs both in HF and RR anatomies. These findings suggest that although lead configurations have to be tailored to each patient, a single optimal lead design is sufficient to obtain near-optimal results across most patients. This study shows the potential of virtual clinical trials as tools to compare existing and explore new lead designs.
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Affiliation(s)
- Cristobal Rodero
- Cardiac Electro-Mechanics Research Group, Biomedical Engineering Department, King ́s College London, London, United Kingdom.
| | - Marina Strocchi
- Cardiac Electro-Mechanics Research Group, Biomedical Engineering Department, King ́s College London, London, United Kingdom
| | - Angela W C Lee
- Cardiac Electro-Mechanics Research Group, Biomedical Engineering Department, King ́s College London, London, United Kingdom
| | - Christopher A Rinaldi
- King's College London, Interdisciplinary Medical Imaging Group, London, United Kingdom
| | - Edward J Vigmond
- Institute of Electrophysiology and Heart Modeling, Foundation Bordeaux University, Bordeaux, France; Bordeaux Institute of Mathematics, UMR-5251, University of Bordeaux, Bordeaux, France
| | - Gernot Plank
- Medical University of Graz, Gottfried Schatz Research Center - Biophysics, Graz, Austria
| | - Pablo Lamata
- Cardiac Electro-Mechanics Research Group, Biomedical Engineering Department, King ́s College London, London, United Kingdom
| | - Steven A Niederer
- Cardiac Electro-Mechanics Research Group, Biomedical Engineering Department, King ́s College London, London, United Kingdom
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Assessment of left ventricular dyssynchrony by speckle tracking echocardiography in children with duchenne muscular dystrophy. Int J Cardiovasc Imaging 2021; 38:79-89. [PMID: 34905152 DOI: 10.1007/s10554-021-02369-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/27/2021] [Indexed: 10/19/2022]
Abstract
Prognosis of Duchenne muscular dystrophy (DMD) is related to cardiac dysfunction. Two dimensional-speckle tracking echocardiography (2D-STE) has recently emerged as a non-invasive functional biomarker for early detection of DMD-related cardiomyopathy. This study aimed to determine, in DMD children, the existence of left ventricle (LV) dyssynchrony using 2D-STE analysis. This prospective controlled study enrolled 25 boys with DMD (mean age 11.0 ± 3.5 years) with normal LV ejection fraction and 50 age-matched controls. Three measures were performed to assess LV mechanical dyssynchrony: the opposing-wall delays (longitudinal and radial analyses), the modified Yu index, and the time-to-peak delays of each segment. Feasibility and reproducibility of 2D-STE dyssynchrony were evaluated. All three mechanical dyssynchrony criteria were significantly higher in the DMD group than in healthy subjects: (1) opposing-wall delays in basal inferoseptal to basal anterolateral segments (61.4 ± 45.3 ms vs. 18.3 ± 50.4 ms, P < 0.001, respectively) and in mid inferoseptal to mid anterolateral segments (58.6 ± 35.3 ms vs. 42.4 ± 36.4 ms, P < 0.05, respectively), (2) modified Yu index (33.3 ± 10.1 ms vs. 28.5 ± 8.1 ms, P < 0.05, respectively), and (3) most of time-to-peak values, especially in basal and mid anterolateral segments. Feasibility was excellent and reliability was moderate to excellent, with ICC values ranging from 0.49 to 0.97. Detection of LV mechanical dyssynchrony using 2D-STE analysis is an easily and reproducible method in paediatric DMD. The existence of an early LV mechanical dyssynchrony visualized using 2D-STE analysis in children with DMD before the onset of cardiomyopathy represents a perspective for future paediatric drug trials in the DMD-related cardiomyopathy prevention.Clinical Trial Registration Clinicaltrials.gov NCT02418338. Post-hoc study, registered on April 16, 2015.
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Ahmed I, Loudon BL, Abozguia K, Cameron D, Shivu GN, Phan TT, Maher A, Stegemann B, Chow A, Marshall H, Nightingale P, Leyva F, Vassiliou VS, McKenna WJ, Elliott P, Frenneaux MP. Biventricular pacemaker therapy improves exercise capacity in patients with non-obstructive hypertrophic cardiomyopathy via augmented diastolic filling on exercise. Eur J Heart Fail 2020; 22:1263-1272. [PMID: 31975494 PMCID: PMC7540697 DOI: 10.1002/ejhf.1722] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 11/19/2019] [Accepted: 11/26/2019] [Indexed: 11/11/2022] Open
Abstract
AIMS Treatment options for patients with non-obstructive hypertrophic cardiomyopathy (HCM) are limited. We sought to determine whether biventricular (BiV) pacing improves exercise capacity in HCM patients, and whether this is via augmented diastolic filling. METHODS AND RESULTS Thirty-one patients with symptomatic non-obstructive HCM were enrolled. Following device implantation, patients underwent detailed assessment of exercise diastolic filling using radionuclide ventriculography in BiV and sham pacing modes. Patients then entered an 8-month crossover study of BiV and sham pacing in random order, to assess the effect on exercise capacity [peak oxygen consumption (VO2 )]. Patients were grouped on pre-specified analysis according to whether left ventricular end-diastolic volume increased (+LVEDV) or was unchanged/decreased (-LVEDV) with exercise at baseline. Twenty-nine patients (20 male, mean age 55 years) completed the study. There were 14 +LVEDV patients and 15 -LVEDV patients. Baseline peak VO2 was lower in -LVEDV patients vs. +LVEDV patients (16.2 ± 0.9 vs. 19.9 ± 1.1 mL/kg/min, P = 0.04). BiV pacing significantly increased exercise ΔLVEDV (P = 0.004) and Δstroke volume (P = 0.008) in -LVEDV patients, but not in +LVEDV patients. Left ventricular ejection fraction and end-systolic elastance did not increase with BiV pacing in either group. This translated into significantly greater improvements in exercise capacity (peak VO2 + 1.4 mL/kg/min, P = 0.03) and quality of life scores (P = 0.02) in -LVEDV patients during the crossover study. There was no effect on left ventricular mechanical dyssynchrony in either group. CONCLUSION Symptomatic patients with non-obstructive HCM may benefit from BiV pacing via augmentation of diastolic filling on exercise rather than contractile improvement. This may be due to relief of diastolic ventricular interaction. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov NCT00504647.
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Affiliation(s)
- Ibrar Ahmed
- Department of Cardiovascular Medicine, University of Birmingham, Birmingham, UK
| | - Brodie L Loudon
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Khalid Abozguia
- Department of Cardiovascular Medicine, University of Birmingham, Birmingham, UK.,Lancashire Cardiac Centre, Blackpool Victoria Hospital, Blackpool, UK
| | - Donnie Cameron
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Ganesh N Shivu
- Department of Cardiovascular Medicine, University of Birmingham, Birmingham, UK
| | - Thanh T Phan
- Department of Cardiovascular Medicine, University of Birmingham, Birmingham, UK.,Cardiology Department, Royal Stoke University Hospital UHNM NHS Trust, Newcastle, UK
| | - Abdul Maher
- Department of Cardiovascular Medicine, University of Birmingham, Birmingham, UK
| | | | - Anthony Chow
- Department of Cardiovascular Medicine, Royal Berkshire NHS Foundation Trust, Reading, UK
| | - Howard Marshall
- Queen Elizabeth Hospital Birmingham, Welcome Trust Clinical Research Facility, Birmingham, UK
| | - Peter Nightingale
- Queen Elizabeth Hospital Birmingham, Welcome Trust Clinical Research Facility, Birmingham, UK
| | - Francisco Leyva
- Department of Cardiovascular Medicine, Queen Elizabeth Hospital, Birmingham, UK
| | | | - William J McKenna
- Institute of Cardiovascular Science, University College of London, London, UK
| | - Perry Elliott
- Institute of Cardiovascular Science, University College of London, London, UK
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8
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Al Saikhan L, Park C, Hughes AD. Reproducibility of Left Ventricular Dyssynchrony Indices by Three-Dimensional Speckle-Tracking Echocardiography: The Impact of Sub-optimal Image Quality. Front Cardiovasc Med 2019; 6:149. [PMID: 31649937 PMCID: PMC6795682 DOI: 10.3389/fcvm.2019.00149] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 09/26/2019] [Indexed: 11/13/2022] Open
Abstract
Background: 3D speckle-tracking echocardiography (3D-STE) is a novel method to quantify left ventricular (LV) mechanical dyssynchrony. 3D-STE is influenced by image quality, but studies on the magnitude of its effect on 3D-STE derived LV systolic dyssynchrony indices (SDIs) and their test-retest reproducibility are limited. Methods: 3D-STE was performed in two groups, each comprising 18 healthy volunteers with good echocardiographic windows. In study 1, optimal and inferior-quality images, by intentionally poor echocardiographic technique, were acquired. In study 2, sub-optimal quality images were acquired by impairing ultrasound propagation using neoprene rubber sheets (thickness 2, 3, and 4 mm) mimicking mildly, moderately, and severely impaired images, respectively. Measures (normalized to cardiac cycle duration) were volume- and strain-based SDIs defined as the standard deviation of time to minimum segmental values, and volume- and strain-derived dispersion indices. For both studies test-retest reproducibility was assessed. Results: Test-retest reproducibility was better for most indices when restricting the analysis to good quality images; nevertheless, only volume-, circumferential strain-, and principal tangential strain-derived LV dyssynchrony indices achieved fair to good reliability. There was no evidence of systematic bias due to sub-optimal quality image. Volume-, circumferential strain-, and principal tangential strain-derived SDIs correlated closely. Radial strain- and longitudinal strain-SDI correlated moderately or weakly with volume-SDI, respectively. Conclusions: Sub-optimal image quality compromised the reliability of 3D-STE derived dyssynchrony indices but did not introduce systematic bias in healthy individuals. Even with optimal quality images, only 3D-STE indices based on volume, circumferential strain and principal tangential strain showed acceptable test-retest reliability.
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Affiliation(s)
- Lamia Al Saikhan
- Department of Cardiac Technology, College of Applied Medial Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Chloe Park
- MRC Unit for Lifelong Health and Ageing at UCL, Department of Population Science and Experimental Medicine, UCL Institute of Cardiovascular Science, London, United Kingdom
| | - Alun D. Hughes
- MRC Unit for Lifelong Health and Ageing at UCL, Department of Population Science and Experimental Medicine, UCL Institute of Cardiovascular Science, London, United Kingdom
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9
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Fujii A, Inden Y, Yanagisawa S, Mamiya K, Okamoto H, Sakamoto Y, Tomomatsu T, Shibata R, Murohara T. Discontinuous contraction in the left ventricle assessed by 2‐D speckle tracking echocardiography benefits from CRT. Pacing Clin Electrophysiol 2019; 42:1204-1212. [DOI: 10.1111/pace.13759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 06/22/2019] [Accepted: 07/07/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Aya Fujii
- Department of CardiologyNagoya University Graduate School of Medicine Nagoya Japan
| | - Yasuya Inden
- Department of CardiologyNagoya University Graduate School of Medicine Nagoya Japan
| | | | - Keita Mamiya
- Department of CardiologyNagoya University Graduate School of Medicine Nagoya Japan
| | - Hiroya Okamoto
- Department of CardiologyNagoya University Graduate School of Medicine Nagoya Japan
| | - Yusuke Sakamoto
- Department of CardiologyNagoya University Graduate School of Medicine Nagoya Japan
| | - Toshiro Tomomatsu
- Department of CardiologyNagoya University Graduate School of Medicine Nagoya Japan
| | - Rei Shibata
- Department of Advanced Cardiovascular Therapeutics Nagoya Japan
| | - Toyoaki Murohara
- Department of CardiologyNagoya University Graduate School of Medicine Nagoya Japan
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10
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Uhm JS, Oh J, Cho IJ, Park M, Kim IS, Jin MN, Bae HJ, Yu HT, Kim TH, Pak HN, Lee MH, Joung B, Kang SM. Left Ventricular End-Systolic Volume Can Predict 1-Year Hierarchical Clinical Composite End Point in Patients with Cardiac Resynchronization Therapy. Yonsei Med J 2019; 60:48-55. [PMID: 30554490 PMCID: PMC6298892 DOI: 10.3349/ymj.2019.60.1.48] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 11/09/2018] [Accepted: 11/09/2018] [Indexed: 11/27/2022] Open
Abstract
PURPOSE This study aimed to elucidate which echocardiographic criteria at three time points, for cardiac resynchronization therapy (CRT) response, are accurate in discriminating the hierarchical clinical composite end point (HCCEP). MATERIALS AND METHODS We included 120 patients (age, 66.1±12.6 years; men, 54.2%) who underwent CRT implantation for heart failure (HF). Echocardiography was performed before and at 3, 6, and 12 months after CRT implantation. The 1-year HCCEP included all-cause mortality, hospitalization for HF, and New York Heart Association functional class for 12 months. CRT response criteria were decrease in left ventricular (LV) end-systolic volume (LVESV) >15%, decrease in LV end-diastolic volume >15%, absolute increase in LV ejection fraction (LVEF) ≥5%, relative increase in LVEF ≥15%, and decrease in mitral regurgitation ≥1 grade. Temporal changes in CRT response rates, accuracy of CRT response criteria at each time and cutoff value for the discrimination of improvement in HCCEP, and agreements with improvement in HCCEP were analyzed. RESULTS HCCEP improvement rates were 65.8% in total group. In nonischemic group, CRT response rates according to all echocardiographic criteria significantly increased with time. In ischemic group, CRT response rate did not significantly change with time. In total group, ΔLVESV at 6 months (ΔLVESV6) had the most significant accuracy for the discrimination of HCCEP (area under the curve=0.781). The optimal cutoff value of ΔLVESV6 was 13.5% (sensitivity=0.719, specificity=0.719). ΔLVESV6 had fair agreement with HCCEP (κ=0.391, p<0.001). CONCLUSION ΔLVESV6 is the most useful echocardiographic CRT response criterion for the prediction of 1-year HCCEP.
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Affiliation(s)
- Jae Sun Uhm
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jaewon Oh
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - In Jeong Cho
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Minsu Park
- Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Seoul, Korea
| | - In Soo Kim
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Moo Nyun Jin
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Han Joon Bae
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hee Tae Yu
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Tae Hoon Kim
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hui Nam Pak
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Moon Hyoung Lee
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Boyoung Joung
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
| | - Seok Min Kang
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Rodrigues I, Abreu A, Oliveira M, Cunha PS, Clara HS, Osório P, Lousinha A, Valente B, Portugal G, Rio P, Morais LA, Santos V, Carmo MM, Ferreira RC. Impact on long-term cardiovascular outcomes of different cardiac resynchronization therapy response criteria. REVISTA PORTUGUESA DE CARDIOLOGIA (ENGLISH EDITION) 2018. [DOI: 10.1016/j.repce.2018.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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12
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Rodrigues I, Abreu A, Oliveira M, Cunha PS, Clara HS, Osório P, Lousinha A, Valente B, Portugal G, Rio P, Morais LA, Santos V, Carmo MM, Ferreira RC. Impact on long-term cardiovascular outcomes of different cardiac resynchronization therapy response criteria. Rev Port Cardiol 2018; 37:961-969. [DOI: 10.1016/j.repc.2018.02.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 02/03/2018] [Accepted: 02/18/2018] [Indexed: 12/31/2022] Open
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13
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Jeffrey RR, Hamburger RF, Gooden-Ebanks J, Petersen JW. Speckle Tracking Echocardiography Identifies Impaired Longitudinal Strain as a Common Deficit in Various Cardiac Diseases. CARDIOVASCULAR INNOVATIONS AND APPLICATIONS 2018. [DOI: 10.15212/cvia.2017.0040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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14
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Wang D, Zhang L, Zeng Q, Xie M. Assessment of left ventricular performance in heart transplant recipients by three-dimensional speckle tracking imaging. Medicine (Baltimore) 2017; 96:e8129. [PMID: 29019881 PMCID: PMC5662304 DOI: 10.1097/md.0000000000008129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
To calculate left ventricular (LV) global performance values in heart transplant (HT) recipients by three-dimensional speckle tracking imaging (3D-STI) and to observe the changes in LV global performance over time after HT and investigate the correlated factors.The 30 HT patients were divided into 2 groups according to postoperative time: 1 month postoperatively (HT-1) group and 6 months postoperatively (HT-2) group. Thirty healthy subjects were enrolled as control group. 3D-STI was performed to assess LV torsion, LV systolic dyssynchrony index (SDI), and LV global strain (GS). Global performance index (GPI) was calculated, and correlations factors with GPI were studied.Heart rate (HR), left atrium (LA), interventricular septum thickness (IVST), left ventricular posterior wall thickness (LVPWT), and left ventricular mass (LVM) in both HT groups were higher than those in the control group. Compared with the control group, SDI was significantly higher in both HT groups, and SDI of the HT-1 group was much higher than that of HT-2 group. Compared with the control group, apical rotation (RoA), twist and torsion in the both HT groups decreased significantly. There were no significant differences in these values between the 2 HT groups; Basal rotation (RoB) showed no significantly difference among the 3 groups. GS in the both HT groups decreased significantly compared with the control group, and there were no significant differences in these values between the 2 HT groups. GPI of the both HT groups was significantly lower than that of the control group; however, GPI of HT-2 group was higher than that of HT-1 group. Multivariate stepwise regression analysis identified global left ventricular longitudinal peak systolic strain (GLS), the time length since surgery, left ventricular mass (LVM), and RoA as predictors of LV GPI. GLS was the most influential to GPI.The values of LV rotation, twist and SDI can be used to assess the LV systolic function and dyssynchrony. The GPI value based on 3D-STI may accurately reflect LV performance changes over time after HT. The GPI value has potential applications in clinical practice. GLS, the time length since surgery, LVM and RoA values can be the predictors of LV global performance, and as long as the left ventricular ejection fraction (LVEF) is preserved, the left ventricular global performance of HT recipients remains stable, and tends to improve over time after HT.
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Affiliation(s)
- Dan Wang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
- Hubei Province Key Lab of Molecular Imaging, Wuhan, China
| | - Li Zhang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
- Hubei Province Key Lab of Molecular Imaging, Wuhan, China
| | - Qingyu Zeng
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
- Hubei Province Key Lab of Molecular Imaging, Wuhan, China
| | - Mingxing Xie
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
- Hubei Province Key Lab of Molecular Imaging, Wuhan, China
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15
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Qiu Q, Yang L, Mai JT, Yang Y, Xie Y, Chen YX, Wang JF. Acute Effects of Multisite Biventricular Pacing on Dyssynchrony and Hemodynamics in Canines With Heart Failure. J Card Fail 2017; 23:304-311. [DOI: 10.1016/j.cardfail.2017.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 12/13/2016] [Accepted: 01/09/2017] [Indexed: 01/14/2023]
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Abstract
Objective: Cardiac resynchronization therapy (CRT) has been shown to induce a structural and electrical remodeling; the data on whether left ventricle (LV) reverse remodeling is associated with restitution of intrinsic contraction pattern are unknown. In this study, we investigated the presence of improvement in left ventricular intrinsic dyssynchrony in patients with CRT. Methods: A total of 45 CRT recipients were prospectively studied. Dyssynchrony indexes including interventricular mechanical delay (IVMD) and tissue Doppler velocity opposing-wall delay (OWD) as well as QRS duration on 12-lead surface electrocardiogram were recorded before CRT device implantation. After 1 year, patients with chronic biventricular pacing were reprogramed to VVI 40 to allow the resumption of native conduction and contraction pattern. After 4–6 h of intrinsic rhythm, QRS duration and all echocardiographic measurements were recorded. Dyssynchrony was defined as IVMD >40 ms and OWD >65 ms. CRT response was defined by a ≥15% reduction in left ventricular end-systolic volume (LVESV) at a 12-month follow-up. Results: Thirty-two patients (71%) showed response to CRT. The native QRS duration reduced significantly from 150±12 ms to 138±14 ms (p<0.001), and dyssynchrony indexes showed a significant improvement only in responders. The mean OWD reduced from 86±37 ms to 50±29 ms (p<0.001), and the mean IVMD decreased from 55±22 ms to 28±22 ms (p<0.001) in responders. The reduction in LVESV was significantly correlated with ΔOWD (r=0.47, p=0.001), ΔIVMD (r=0.45, p=0.001), and ΔQRS (r=0.34, p=0.022). Conclusion: Chronic CRT significantly improves LV native contraction pattern and causes reverse remodeling in dyssynchrony.
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Lopez-Candales A, Hernandez-Suarez DF. Strain Imaging Echocardiography: What Imaging Cardiologists Should Know. Curr Cardiol Rev 2017; 13:118-129. [PMID: 27799029 PMCID: PMC5452148 DOI: 10.2174/1573403x12666161028122649] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/06/2016] [Accepted: 10/18/2016] [Indexed: 01/30/2023] Open
Abstract
Despite recent advances in clinical imaging, echocardiography remains as the most accessi-ble and reliable noninvasive. Since knowledge of left ventricular systolic function remains so critically important in determining prognosis; every effort should be made to prevent subjective estimations. The advent of strain imaging echocardiography now offers a readily available and portable imaging tool that not only offers an objective characterization of myocardial dynamics; but also allows for early detection of subclinical left ventricular dysfunction. This review outlines the basic concepts of strain imaging to better understand the mechanism of myocardial function as well their applicability in the least common cardiac diagnosis among current clinical practice.
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Affiliation(s)
- Angel Lopez-Candales
- Cardiovascular Medicine Division, University of Puerto Rico School of Medicine, Medical Sciences Building, PO Box 365067, San Juan, Puerto Rico
| | - Dagmar F Hernandez-Suarez
- Cardiovascular Medicine Division, University of Puerto Rico School of Medicine, Medical Sciences Building, PO Box 365067, San Juan, Puerto Rico
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18
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Abstract
Echocardiographic imaging plays a major role in patient selection for cardiac resynchronization therapy (CRT). One-third of patients do not respond; there is interest in advanced echocardiographic imaging to improve response. Current guidelines favor CRT for patients with electrocardiographic (ECG) QRS width of 150 milliseconds or greater and left bundle branch block. ECG criteria are imperfect; there is interest in advanced echocardiographic imaging to improve patient selection. This discussion focuses on newer echocardiographic methods to improve patient selection, improve delivery, and identify patients at risk for poor outcomes and serious ventricular arrhythmias.
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Affiliation(s)
- John Gorcsan
- Heart and Vascular Institute, Division of Cardiology, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Bhupendar Tayal
- Heart and Vascular Institute, Division of Cardiology, University of Pittsburgh, Pittsburgh, PA, USA
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19
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Behar JM, Claridge S, Jackson T, Sieniewicz B, Porter B, Webb J, Rajani R, Kapetanakis S, Carr-White G, Rinaldi CA. The role of multi modality imaging in selecting patients and guiding lead placement for the delivery of cardiac resynchronization therapy. Expert Rev Cardiovasc Ther 2016; 15:93-107. [DOI: 10.1080/14779072.2016.1252674] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jonathan M Behar
- Department of Imaging Sciences & Biomedical Engineering, King’s College London, London, UK
- Department of Cardiology, St. Thomas’ Hospital, London, UK
| | - Simon Claridge
- Department of Imaging Sciences & Biomedical Engineering, King’s College London, London, UK
- Department of Cardiology, St. Thomas’ Hospital, London, UK
| | - Tom Jackson
- Department of Imaging Sciences & Biomedical Engineering, King’s College London, London, UK
- Department of Cardiology, St. Thomas’ Hospital, London, UK
| | - Ben Sieniewicz
- Department of Imaging Sciences & Biomedical Engineering, King’s College London, London, UK
- Department of Cardiology, St. Thomas’ Hospital, London, UK
| | - Bradley Porter
- Department of Imaging Sciences & Biomedical Engineering, King’s College London, London, UK
- Department of Cardiology, St. Thomas’ Hospital, London, UK
| | - Jessica Webb
- Department of Imaging Sciences & Biomedical Engineering, King’s College London, London, UK
- Department of Cardiology, St. Thomas’ Hospital, London, UK
| | - Ronak Rajani
- Department of Cardiology, St. Thomas’ Hospital, London, UK
| | | | | | - Christopher A Rinaldi
- Department of Imaging Sciences & Biomedical Engineering, King’s College London, London, UK
- Department of Cardiology, St. Thomas’ Hospital, London, UK
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20
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Applications of Advanced Imaging in Cardiac Electrophysiology. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2016; 18:66. [DOI: 10.1007/s11936-016-0491-5] [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: 10/21/2022]
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21
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Dawoud F, Schuleri KH, Spragg DD, Horáček BM, Berger RD, Halperin HR, Lardo AC. Insights from Novel Noninvasive CT and ECG Imaging Modalities on Electromechanical Myocardial Activation in a Canine Model of Ischemic Dyssynchronous Heart Failure. J Cardiovasc Electrophysiol 2016; 27:1454-1461. [PMID: 27578532 DOI: 10.1111/jce.13091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 08/12/2016] [Accepted: 08/17/2016] [Indexed: 01/26/2023]
Abstract
INTRODUCTION The interplay between electrical activation and mechanical contraction patterns is hypothesized to be central to reduced effectiveness of cardiac resynchronization therapy (CRT). Furthermore, complex scar substrates render CRT less effective. We used novel cardiac computed tomography (CT) and noninvasive electrocardiographic imaging (ECGI) techniques in an ischemic dyssynchronous heart failure (DHF) animal model to evaluate electrical and mechanical coupling of cardiac function, tissue viability, and venous accessibility of target pacing regions. METHODS AND RESULTS Ischemic DHF was induced in 6 dogs using coronary occlusion, left bundle ablation and tachy RV pacing. Full body ECG was recorded during native rhythm followed by volumetric first-pass and delayed enhancement CT. Regional electrical activation were computed and overlaid with segmented venous anatomy and scar regions. Reconstructed electrical activation maps show consistency with LBBB starting on the RV and spreading in a "U-shaped" pattern to the LV. Previously reported lines of slow conduction are seen parallel to anterior or inferior interventricular grooves. Mechanical contraction showed large septal to lateral wall delay (80 ± 38 milliseconds vs. 123 ± 31 milliseconds, P = 0.0001). All animals showed electromechanical correlation except dog 5 with largest scar burden. Electromechanical decoupling was largest in basal lateral LV segments. CONCLUSION We demonstrated a promising application of CT in combination with ECGI to gain insight into electromechanical function in ischemic dyssynchronous heart failure that can provide useful information to study regional substrate of CRT candidates.
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Affiliation(s)
- Fady Dawoud
- Division of Cardiology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Karl H Schuleri
- Division of Cardiology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - David D Spragg
- Division of Cardiology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - B Milan Horáček
- Department of Electrical and Computer Engineering, Dalhousie University, Halifax, NS, Canada
| | - Ronald D Berger
- Division of Cardiology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Henry R Halperin
- Division of Cardiology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Albert C Lardo
- Division of Cardiology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.,Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, USA
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Paoletti Perini A, Sacchi S, Votta CD, Lilli A, Attanà P, Pieragnoli P, Ricciardi G, Bani R, Padeletti L. Left ventricular rotational dyssynchrony before cardiac resynchronization therapy. J Cardiovasc Med (Hagerstown) 2016; 17:469-77. [DOI: 10.2459/jcm.0000000000000391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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23
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Steelant B, Stankovic I, Roijakkers I, Aarones M, Bogaert J, Desmet W, Aakhus S, Voigt JU. The Impact of Infarct Location and Extent on LV Motion Patterns. JACC Cardiovasc Imaging 2016; 9:655-64. [DOI: 10.1016/j.jcmg.2015.07.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 06/25/2015] [Accepted: 07/15/2015] [Indexed: 12/14/2022]
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25
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Denniss AR, Gregory AT. Festschrift in Honour of David Leslie Ross: A Man for Whom no Electrogram is Goliath. Heart Lung Circ 2016; 25:421-4. [DOI: 10.1016/s1443-9506(16)30026-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sanchis L, Prat S, Sitges M. Cardiovascular Imaging in the Electrophysiology Laboratory. ACTA ACUST UNITED AC 2016; 69:595-605. [PMID: 27107802 DOI: 10.1016/j.rec.2016.01.027] [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: 12/31/2015] [Accepted: 01/09/2016] [Indexed: 10/21/2022]
Abstract
In recent years, rapid technological advances have allowed the development of new electrophysiological procedures that would not have been possible without the parallel development of imaging techniques used to plan and guide these procedures and monitor their outcomes. Ablation of atrial fibrillation is among the interventions with the greatest need for imaging support. Echocardiography allows the appropriate selection of patients and the detection of thrombi that would contraindicate the intervention; cardiac magnetic resonance imaging and computed tomography are also essential in planning this procedure, by allowing a detailed anatomical study of the pulmonary veins. In addition, in cardiac resynchronization therapy, echocardiography plays a central role in both patient selection and, later, in device adjustment and in assessing the effectiveness of the technique. More recently, ablation of ventricular tachycardias has been established as a treatment option; this would not be possible without planning using an imaging study such as cardiac magnetic resonance imaging of myocardial scarring.
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Affiliation(s)
- Laura Sanchis
- Instituto Cardiovascular, Hospital Clínic, IDIBAPS, Universidad de Barcelona, IDIBAPS-Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Susanna Prat
- Instituto Cardiovascular, Hospital Clínic, IDIBAPS, Universidad de Barcelona, IDIBAPS-Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Marta Sitges
- Instituto Cardiovascular, Hospital Clínic, IDIBAPS, Universidad de Barcelona, IDIBAPS-Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain.
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Khan SG, Klettas D, Kapetanakis S, Monaghan MJ. Clinical utility of speckle-tracking echocardiography in cardiac resynchronisation therapy. Echo Res Pract 2016; 3:R1-R11. [PMID: 27249816 PMCID: PMC5402657 DOI: 10.1530/erp-15-0032] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 03/08/2016] [Indexed: 11/08/2022] Open
Abstract
Cardiac resynchronisation therapy (CRT) can profoundly improve outcome in selected patients with heart failure; however, response is difficult to predict and can be absent in up to one in three patients. There has been a substantial amount of interest in the echocardiographic assessment of left ventricular dyssynchrony, with the ultimate aim of reliably identifying patients who will respond to CRT. The measurement of myocardial deformation (strain) has conventionally been assessed using tissue Doppler imaging (TDI), which is limited by its angle dependence and ability to measure in a single plane. Two-dimensional speckle-tracking echocardiography is a technique that provides measurements of strain in three planes, by tracking patterns of ultrasound interference ('speckles') in the myocardial wall throughout the cardiac cycle. Since its initial use over 15 years ago, it has emerged as a tool that provides more robust, reproducible and sensitive markers of dyssynchrony than TDI. This article reviews the use of two-dimensional and three-dimensional speckle-tracking echocardiography in the assessment of dyssynchrony, including the identification of echocardiographic parameters that may hold predictive potential for the response to CRT. It also reviews the application of these techniques in guiding optimal LV lead placement pre-implant, with promising results in clinical improvement post-CRT.
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Affiliation(s)
- Sitara G Khan
- King's College London British Heart Foundation Centre, London, UK Department of Cardiology, King's College Hospital, London, UK
| | | | | | - Mark J Monaghan
- King's College London British Heart Foundation Centre, London, UK Department of Cardiology, King's College Hospital, London, UK
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Rosa I, Marini C, Stella S, Ancona F, Spartera M, Margonato A, Agricola E. Mechanical dyssynchrony and deformation imaging in patients with functional mitral regurgitation. World J Cardiol 2016; 8:146-162. [PMID: 26981211 PMCID: PMC4766266 DOI: 10.4330/wjc.v8.i2.146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 10/06/2015] [Accepted: 12/08/2015] [Indexed: 02/06/2023] Open
Abstract
Chronic functional mitral regurgitation (FMR) is a frequent finding of ischemic heart disease and dilated cardiomyopathy (DCM), associated with unfavourable prognosis. Several pathophysiologic mechanisms are involved in FMR, such as annular dilatation and dysfunction, left ventricle (LV) remodeling, dysfunction and dyssynchrony, papillary muscles displacement and dyssynchrony. The best therapeutic choice for FMR is still debated. When optimal medical treatment has already been set, a further option for cardiac resynchronization therapy (CRT) and/or surgical correction should be considered. CRT is able to contrast most of the pathophysiologic determinants of FMR by minimizing LV dyssynchrony through different mechanisms: Increasing closing forces, reducing tethering forces, reshaping annular geometry and function, correcting diastolic MR. Deformation imaging in terms of two-dimensional speckle tracking has been validated for LV dyssynchrony assessment. Radial speckle tracking and three-dimensional strain analysis appear to be the best methods to quantify intraventricular delay and to predict CRT-responders. Speckle-tracking echocardiography in patients with mitral valve regurgitation has been usually proposed for the assessment of LV and left atrial function. However it has also revealed a fundamental role of intraventricular dyssynchrony in determining FMR especially in DCM, rather than in ischemic cardiomyopathy in which MR severity seems to be more related to mitral valve deformation indexes. Furthermore speckle tracking allows the assessment of papillary muscle dyssynchrony. Therefore this technique can help to identify optimal candidates to CRT that will probably demonstrate a reduction in FMR degree and thus will experience a better outcome.
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Ghani A, Delnoy PPHM, Ottervanger JP, Ramdat Misier AR, Smit JJJ, Adiyaman A, Elvan A. Association of apical rocking with long-term major adverse cardiac events in patients undergoing cardiac resynchronization therapy. Eur Heart J Cardiovasc Imaging 2016; 17:146-53. [PMID: 26453544 PMCID: PMC4882884 DOI: 10.1093/ehjci/jev236] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 08/31/2015] [Indexed: 01/14/2023] Open
Abstract
AIMS Correctly identifying patients who will benefit from cardiac resynchronization therapy (CRT) is still challenging. 'Apical rocking' is observed in asynchronously contracting ventricles and is associated with echocardiographic response to CRT. The association of apical rocking and long-term clinical outcome is however unknown at present. We assessed the predictive value of left ventricular (LV) apical rocking on a long-term clinical outcome in patients treated with CRT. METHODS AND RESULTS Consecutive heart failure patients treated with primary indication for CRT-D between 2005 and 2009 were included in a prospective registry. Echocardiography was performed prior to CRT to assess apical rocking, defined as motion of the LV apical myocardium perpendicular to the LV long axis. Major adverse cardiac event (MACE) was defined as combined end point of cardiac death and/or heart failure hospitalization and/or appropriate therapy (ATP and/or ICD shocks). All echocardiograms were assessed by independent cardiologists, blinded for clinical data. Multivariable analyses were performed to adjust for potential confounders. Two hundred and ninety-five patients with echocardiography prior to implantation were included in the final analyses. Apical rocking was present in 45% of the study patients. Apical rocking was significantly more common in younger patients, females, patients with sinus rhythm, non-ischaemic cardiomyopathy, and in patients with LBBB and wider QRS duration. During a mean clinical follow-up of 5.2 ± 1.6 years, 92 (31%) patients reached the end point of the study (MACE). Patients with MACE had shorter QRS duration, had more ischaemic cardiomyopathy, and were more often on Amiodarone. In univariate analyses, MACE was associated with shorter QRS duration, ischaemic aetiology, and the absence of apical rocking. After multivariable analyses, apical rocking was associated with less MACE (hazards ratio, HR 0.44, 95% confidence interval, CI 0.25-0.77). CONCLUSION Apical rocking is an independent predictor of a favourable long-term outcome in CRT-D patients.
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Affiliation(s)
- Abdul Ghani
- Department of Cardiology, Isala Hospital, Dr. Van Heesweg 2, 8025 AB Zwolle, The Netherlands
| | - Peter Paul H M Delnoy
- Department of Cardiology, Isala Hospital, Dr. Van Heesweg 2, 8025 AB Zwolle, The Netherlands
| | - Jan Paul Ottervanger
- Department of Cardiology, Isala Hospital, Dr. Van Heesweg 2, 8025 AB Zwolle, The Netherlands
| | - Anand R Ramdat Misier
- Department of Cardiology, Isala Hospital, Dr. Van Heesweg 2, 8025 AB Zwolle, The Netherlands
| | - Jaap Jan J Smit
- Department of Cardiology, Isala Hospital, Dr. Van Heesweg 2, 8025 AB Zwolle, The Netherlands
| | - Ahmet Adiyaman
- Department of Cardiology, Isala Hospital, Dr. Van Heesweg 2, 8025 AB Zwolle, The Netherlands
| | - Arif Elvan
- Department of Cardiology, Isala Hospital, Dr. Van Heesweg 2, 8025 AB Zwolle, The Netherlands
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Gorcsan J, Tayal B. Newer Echocardiographic Techniques in Cardiac Resynchronization Therapy. Card Electrophysiol Clin 2015; 7:609-618. [PMID: 26596806 DOI: 10.1016/j.ccep.2015.08.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Echocardiographic imaging plays a major role in patient selection for cardiac resynchronization therapy (CRT). One-third of patients do not respond; there is interest in advanced echocardiographic imaging to improve response. Current guidelines favor CRT for patients with electrocardiographic (ECG) QRS width of 150 milliseconds or greater and left bundle branch block. ECG criteria are imperfect; there is interest in advanced echocardiographic imaging to improve patient selection. This discussion focuses on newer echocardiographic methods to improve patient selection, improve delivery, and identify patients at risk for poor outcomes and serious ventricular arrhythmias.
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Affiliation(s)
- John Gorcsan
- Heart and Vascular Institute, Division of Cardiology, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Bhupendar Tayal
- Heart and Vascular Institute, Division of Cardiology, University of Pittsburgh, Pittsburgh, PA, USA
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Clinical Application of Strain Imaging. CURRENT ANESTHESIOLOGY REPORTS 2015. [DOI: 10.1007/s40140-015-0140-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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32
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Ghani A, Delnoy PPHM, Ottervanger JP, Ramdat Misier AR, Smit JJJ, Adiyaman A, Elvan A. Are changes in the extent of left ventricular dyssynchrony as assessed by speckle tracking associated with response to cardiac resynchronization therapy? Int J Cardiovasc Imaging 2015; 32:553-61. [PMID: 26585749 DOI: 10.1007/s10554-015-0809-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 11/16/2015] [Indexed: 11/26/2022]
Abstract
Echocardiographic assessment of left ventricular (LV) dyssynchrony is used to predict response to cardiac resynchronization therapy (CRT). However, the association between reduction in the extent of speckle tracking based LV-dyssynchrony and echocardiographic response to CRT has not been explored yet. The aim of this study was to assess the changes in the extent of LV dyssynchrony as a result of CRT and its association with echocardiographic response to CRT in a large consecutive series of patients. We studied 138 patients with standard CRT indication. Time-based speckle tracking longitudinal strain (maximal delay between 6-segments in 4-chamber view) was performed to assess LV-dyssynchrony at baseline and after a mean follow-up of 22 ± 8 months. Echocardiographic CRT response was defined as a reduction in LV end-systolic volume ≥15 %. Mean age was 68 ± 8 years (30 % female). Mean LV ejection fraction (LVEF) was 26 ± 7 %. Ninety six patients (70 %) were classified as echocardiographic responders. In the total study group, LV-dyssynchrony decreased from 196 ± 89 ms at baseline to 180 ± 105 ms during follow-up, P = 0.01. Of note, in responders there was a pronounced reduction in LV dyssynchrony (198 ± 88 ms at baseline vs 154 ± 50 ms after CRT, P < 0.001), whereas in non-responders there was a significant increase (191 ± 92 ms at baseline vs 243 ± 160 ms after CRT, P = 0.04). After multivariate analysis, decreased in LV-dyssynchrony, wider QRS duration and non-ischemic etiology were independently and significantly associated with CRT response. Changes in the extent of LV dyssynchrony as measured by speckle tracking after CRT are independently associated with response to CRT.
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Affiliation(s)
- Abdul Ghani
- Department of Cardiology, Heartcenter, Isala, Dr. Van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - Peter Paul H M Delnoy
- Department of Cardiology, Heartcenter, Isala, Dr. Van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - Jan Paul Ottervanger
- Department of Cardiology, Heartcenter, Isala, Dr. Van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - Anand R Ramdat Misier
- Department of Cardiology, Heartcenter, Isala, Dr. Van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - Jaap Jan J Smit
- Department of Cardiology, Heartcenter, Isala, Dr. Van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - Ahmet Adiyaman
- Department of Cardiology, Heartcenter, Isala, Dr. Van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - Arif Elvan
- Department of Cardiology, Heartcenter, Isala, Dr. Van Heesweg 2, 8025 AB, Zwolle, The Netherlands.
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Gorcsan J, Sogaard P, Bax JJ, Singh JP, Abraham WT, Borer JS, Dickstein K, Gras D, Krum H, Brugada J, Robertson M, Ford I, Holzmeister J, Ruschitzka F. Association of persistent or worsened echocardiographic dyssynchrony with unfavourable clinical outcomes in heart failure patients with narrow QRS width: a subgroup analysis of the EchoCRT trial. Eur Heart J 2015; 37:49-59. [DOI: 10.1093/eurheartj/ehv418] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 07/29/2015] [Indexed: 01/09/2023] Open
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Varma PK, Namboodiri N, Raman SP, Pappu UK, Gadhinglajkar SV, Ho J, Owais K, Mahmood F. CASE 10—2015: Cardiac Resynchronization Therapy: Role of Intraoperative Real-Time Three-Dimensional Transesophageal Echocardiography. J Cardiothorac Vasc Anesth 2015; 29:1365-75. [PMID: 26159744 DOI: 10.1053/j.jvca.2015.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Suneel Puthuvassery Raman
- Department of Anesthesiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
| | | | | | - Jonathan Ho
- Department of Anesthesiology, University of California, Los Angeles, Los Angeles, CA
| | - Khurram Owais
- Department of Anaesthesia, Beth Israel Deaconess Medical Center, Boston, MA
| | - Feroze Mahmood
- Department of Anaesthesia, Beth Israel Deaconess Medical Center, Boston, MA
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Pokharel P, Fujikura K, Bella JN. Clinical applications and prognostic implications of strain and strain rate imaging. Expert Rev Cardiovasc Ther 2015; 13:853-66. [DOI: 10.1586/14779072.2015.1056163] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Ghani A, Delnoy PPH, Adiyaman A, Ottervanger JP, Ramdat Misier AR, Smit JJJ, Elvan A. Septal rebound stretch as predictor of echocardiographic response to cardiac resynchronization therapy. IJC HEART & VASCULATURE 2015; 7:22-27. [PMID: 28785641 PMCID: PMC5497250 DOI: 10.1016/j.ijcha.2015.02.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 02/01/2015] [Indexed: 01/14/2023]
Abstract
AIM Septal rebound stretch (SRSsept) reflects an inefficient deformation of the septum during systole and is a potential new echocardiographic tool to predict response to Cardiac Resynchronization Therapy (CRT). However, there are only limited data on the potential predictive value of SRSsept on echocardiographic response. We evaluated the predictive value of SRSsept on echocardiographic response to CRT in a large population. METHODS AND RESULTS A total of 138 consecutive patients with functional class II-IV heart failure who underwent CRT were studied. Echocardiography was performed at baseline and after a mean follow-up period of 22 ± 8 months. Echocardiographic response to CRT was defined as a reduction in LV end-systolic volume ≥ 15%. Receiver operating characteristic curve analysis was performed to define the optimal cut-off value for SRSsept. Multivariable analyses were performed to adjust for potential confounders. Mean age was 68 ± 8 years (30% female). Mean baseline LV ejection fraction was 26 ± 7%, 51% had ischemic etiology. LBBB or LBBB like morphology was present in 95% of patients. Mean SRSsept was 4.4 ± 3.2%, 56% of patients had SRSsept ≥ 4%. Ninety six patients (70%) were echocardiographic responders. Baseline SRSsept was significantly higher in responders compared to non-responders (5.1 ± 3.2 vs 3.0 ± 2.7, P < 0.001). The optimal cut-off value for SRSsept to predict response to CRT was 4.0%. After both univariate (OR 3.74, 95% CI 1.72-8.10) and multivariate analyses (OR 3.71, 95% CI 1.49-9.2), baseline SRSsept > 4% independently predicted the response to CRT. CONCLUSIONS Baseline septal rebound stretch is independently associated with echocardiographic response to CRT.
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Key Words
- CABG, coronary artery bypass grafting
- CRT, cardiac resynchronization therapy
- Cardiac resynchronization therapy
- Heart failure
- IVMD, inter-ventricular mechanical delay
- LBBB, left bundle branch block
- LV-dyssynchrony
- LVEDD, left ventricular end-diastolic diameter
- LVEDV, left ventricular end-diastolic volume
- LVEF, left ventricular ejection fraction
- LVESD, left ventricular end-systolic diameter
- LVESV, left ventricular end-systolic volume
- NYHA, New York Heart Association
- PCI, percutaneous coronary intervention
- RBBB, right bundle branch block
- Response
- SRSSept, septal rebound stretch
- Septal rebound stretch
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Affiliation(s)
| | | | | | | | | | | | - Arif Elvan
- Department of Cardiology, Isala Hospital, Zwolle, The Netherlands
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37
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Steffel J, Robertson M, Singh JP, Abraham WT, Bax JJ, Borer JS, Dickstein K, Ford I, Gorcsan J, Gras D, Krum H, Sogaard P, Holzmeister J, Brugada J, Ruschitzka F. The effect of QRS duration on cardiac resynchronization therapy in patients with a narrow QRS complex: a subgroup analysis of the EchoCRT trial. Eur Heart J 2015; 36:1983-9. [DOI: 10.1093/eurheartj/ehv242] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 05/14/2015] [Indexed: 11/14/2022] Open
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Ghani A, Delnoy PPHM, Adiyaman A, Ottervanger JP, Ramdat Misier AR, Smit JJJ, Elvan A. Response to cardiac resynchronization therapy as assessed by time-based speckle tracking imaging. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2015; 38:455-64. [PMID: 25684239 DOI: 10.1111/pace.12589] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Revised: 12/09/2014] [Accepted: 01/04/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Response to cardiac resynchronization therapy (CRT) is still difficult to predict with previously investigated dyssynchrony indices. The predictive value of speckle tracking strain analysis has not been fully delineated yet. The objective of this study was to assess the predictive value of longitudinal strain (LS) and radial strain (RS) speckle tracking measurements on echocardiographic and clinical response to CRT. METHODS A total of 138 consecutive patients with functional class II-IV heart failure who underwent CRT were studied. Echocardiography was performed at baseline and during follow-up. Six different time-based left ventricular (LV)-dyssynchrony indices were measured with LS and RS. Echocardiographic response to CRT was defined as a reduction in LV end-systolic volume ≥15% and clinical response as survival without heart failure hospitalization. Multivariable analyses were performed to adjust for potential confounding factors. RESULTS Echocardiographic and clinical follow-up was 22 ± 8 and 42 ± 8 months, respectively. Ninety-six patients (70%) were classified as echocardiographic responders and 114 patients (83%) survived without heart failure hospitalization. QRS duration and nonischemic etiology predicted echocardiographic response to CRT. None of the speckle tracking indices was different between echocardiographic responders and nonresponders to CRT. Regarding clinical response, only maximal delay between six segments in four-chamber view measured with LS was different between responders and nonresponders, with 154-ms delay as the optimal cut-off value. Neither stratified analyses in patients with sinus rhythm nor multivariable analyses did change these findings. CONCLUSION Of all time-based measured speckle tracking indices, only maximal delay between six segments in four-chamber view as assessed with LS was associated with clinical response to CRT.
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Affiliation(s)
- Abdul Ghani
- Department of Cardiology, Isala Hospital, Zwolle, the Netherlands
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Ghani A, Delnoy PPHM, Ottervanger JP, Misier ARR, Smit JJJ, Adiyaman A, Elvan A. Apical rocking is predictive of response to cardiac resynchronization therapy. Int J Cardiovasc Imaging 2015; 31:717-25. [DOI: 10.1007/s10554-015-0607-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 01/28/2015] [Indexed: 01/14/2023]
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Chen Y, Cheng L, Yao H, Chen H, Wang Y, Zhao W, Pan C, Shu X. The myocardial ischemia evaluated by real-time contrast echocardiography may predict the response to cardiac resynchronization therapy: a large animal study. PLoS One 2014; 9:e113992. [PMID: 25469632 PMCID: PMC4254922 DOI: 10.1371/journal.pone.0113992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Accepted: 11/02/2014] [Indexed: 11/19/2022] Open
Abstract
Evidence-based criteria for applying cardiac resynchronization therapy (CRT) in patients with ischemic cardiomyopathy are still scarce. The aim of the present study was to evaluate the predictive value of real-time myocardial contrast echocardiography (RT-MCE) in a preclinical canine model of ischemic cardiomyopathy who received CRT. Ischemic cardiomyopathy was produced by ligating the first diagonal branch in 20 beagles. Dogs were subsequently divided into two groups that were either treated with bi-ventricular pacing (CRT group) or left untreated (control group). RT-MCE was performed at baseline, before CRT, and 4 weeks after CRT. Two-dimensional speckle tracking imaging was used to evaluate the standard deviation of circumferential (Cir12SD), radial (R12SD), and longitudinal (L12SD) strains of left ventricular segments at basal as well as middle levels. Four weeks later, the Cir12SD, R12SD, and myocardial blood flow (MBF) of the treated group were significantly improved compared to their non-CRT counterparts. Furthermore, MBF values measured before CRT were significantly higher in responders than in non-responders to bi-ventricular pacing. Meanwhile, no significant differences were observed between the responder and non-responder groups in terms of Cir12SD, R12SD, and L12SD. A high degree of correlation was found between MBF values before CRT and LVEF after CRT. When MBF value>24.9 dB/s was defined as a cut-off point before CRT, the sensitivity and specificity of RT-MCE in predicting the response to CRT were 83.3% and 100%, respectively. Besides, MBF values increased significantly in the CRT group compared with the control group after 4 weeks of pacing (49.8±15.5 dB/s vs. 28.5±4.6 dB/s, p<0.05). Therefore, we considered that myocardial perfusion may be superior to standard metrics of LV synchrony in selecting appropriate candidates for CRT. In addition, CRT can improve myocardial perfusion in addition to cardiac synchrony, especially in the setting of ischemic cardiomyopathy.
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Affiliation(s)
- Yongle Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Shanghai, PR China
| | - Leilei Cheng
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Shanghai, PR China
| | - Haohua Yao
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Shanghai, PR China
| | - Haiyan Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Shanghai, PR China
| | - Yongshi Wang
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Shanghai, PR China
| | - Weipeng Zhao
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Shanghai, PR China
| | - Cuizhen Pan
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Shanghai, PR China
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Shanghai, PR China
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41
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Marsan NA, Bax JJ. The potential role of gated myocardial perfusion SPECT imaging in patient selection for cardiac resynchronization therapy. J Nucl Cardiol 2014; 21:1072-4. [PMID: 25112540 DOI: 10.1007/s12350-014-9956-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 07/11/2014] [Indexed: 10/24/2022]
Affiliation(s)
- Nina Ajmone Marsan
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
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Qiu Q, Chen YX, Mai JT, Yuan WL, Wei YL, Liu YM, Yang L, Wang JF. Effects of cardiac resynchronization therapy on left ventricular remodeling and dyssynchrony in patients with left ventricular noncompaction and heart failure. Int J Cardiovasc Imaging 2014; 31:329-37. [PMID: 25392055 DOI: 10.1007/s10554-014-0568-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 11/05/2014] [Indexed: 12/18/2022]
Abstract
Left ventricular noncompaction (LVNC) is a rare cardiomyopathy with high incidence of heart failure (HF). It is unclear whether LVNC patients with desynchronized HF would benefit from cardiac resynchronization therapy (CRT). In order to evaluate the effect of CRT on LVNC, this study explored left ventricular (LV) remodeling and mechanical synchronicity before and after CRT in LVNC patients, and compare with that in idiopathic dilated cardiomyopathy (DCM) patients. We collected 15 LVNC and 30 matched DCM patients. All the patients underwent clinical evaluation,electrocardiogram and echocardiography before CRT and ≥6 months later. LV response was defined as ≥15 % decrease in LV end-systolic volume (LVESV). Longitudinal synchronicity was quantified by YU-index using tissue Doppler imaging. The time delay of peak radial strain from anteroseptal to posterior wall, which derived from speckle tracking imaging, was used to quantify radial synchronicity. In LVNC group, LV ejection fraction increased from 27.6 ± 5.5 to 39.1 ± 7.0 % (P < 0.01) during follow-up, but LV volumes did not change significantly (both P > 0.05). Five LVNC patients (33.3 %) responded to CRT, and all of them were super-responders (reduction in LVESV > 30 %). In addition, the number of noncompacted segments and the thickness ratio of noncompacted to compacted myocardium decreased (both P < 0.05). Inter-ventricular, longitudinal and radial intra-ventricular dyssynchrony also reduced significantly (all P < 0.05). Compared with DCM group, there was no significant difference in LV response rate (33.3 vs. 60.0 %, P = 0.092), improvement of LV function and dyssynchrony index (all P < 0.05). In conclusion, CRT improved heart function, morphology and mechanical dyssynchrony in LVNC patients.
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Affiliation(s)
- Qiong Qiu
- Department of Cardiology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 West Yanjiang Road, Guangzhou, 510120, China
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The association between left ventricular twisting motion and mechanical dyssynchrony: a three-dimensional speckle tracking study. Heart Vessels 2014; 31:158-64. [DOI: 10.1007/s00380-014-0586-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 09/19/2014] [Indexed: 12/18/2022]
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Gürel E, Tigen K, Karaahmet T, Dündar C, Güler A, Başaran Y. Apical transverse motion is associated with speckle-tracking radial dyssynchrony in patients with non-ischemic dilated cardiomyopathy. Anatol J Cardiol 2014; 15:620-5. [PMID: 25550176 PMCID: PMC5336861 DOI: 10.5152/akd.2014.5607] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Objective: Apical transverse motion (ATM) is a new parameter for assessing left ventricular (LV) dyssynchrony. Speckle-tracking radial strain analysis seems to be the best method to identify potential responders to cardiac resynchronization therapy. The aim of our study was to investigate the association between ATM and radial dyssynchrony assessed by speckle-tracking echocardiography in patients with non-ischemic dilated cardiomyopathy (NDC). Methods: We examined 35 NDC patients (mean age 49.2±28.1 years; 21 males). Cardiac dimension and ejection fraction (EF) were measured. Speckle-tracking analysis was performed on two-dimensional greyscale images in the mid-LV short axis view and apical views to calculate global radial, circumferential, and longitudinal strain (GRS, GCS, GLS), as well as rotational indexes (LV twist and torsion). Radial dyssynchrony was defined as a difference in time to peak systolic radial strain between the anteroseptal and posterior segments with a cut-off value of 130 ms. ATM was estimated using motion traces of 2 opposite apical segments. Results: Radial dyssynchrony was significantly correlated with ATMloop (r=0.78, p<0.001), ATM4CV (r=0.71, p=0.001), ATM3CV (r=0.67, p=0.003), GRS (r=-0.51, p=0.04), GCS (r=-0.55, p=0.03), LV twist (r=-0.58, p=0.02), and LV torsion (r=-0.56, p=0.03). The receiver operating characteristics analysis for ATMloop to distinguish between patients with and without radial dyssynchrony revealed an area under the curve value of 0.88 (CI: 0.73-1.04, p=0.005). The best cut-off value was 2.5 mm for ATMloop (85% sensitivity and 86% specificity). Conclusion: Apical transverse motion is closely associated with radial dyssynchrony assessed by speckle-tracking echocardiography. Quantitative measure of apical rocking has the potential for clinical applications.
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Affiliation(s)
- Emre Gürel
- Department of Cardiology, Ordu State Hospital; Ordu-Turkey.
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Haugaa KH, Marek JJ, Ahmed M, Ryo K, Adelstein EC, Schwartzman D, Saba S, Gorcsan J. Mechanical dyssynchrony after cardiac resynchronization therapy for severely symptomatic heart failure is associated with risk for ventricular arrhythmias. J Am Soc Echocardiogr 2014; 27:872-9. [PMID: 24798865 DOI: 10.1016/j.echo.2014.04.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Indexed: 11/15/2022]
Abstract
BACKGROUND Risk factors for ventricular arrhythmias after cardiac resynchronization defibrillator therapy (CRT-D) for severely symptomatic heart failure are of clinical importance but are not clearly defined. The objective of this study was to test the hypothesis that mechanical dyssynchrony after CRT-D is a risk factor for ventricular arrhythmias. METHODS A total of 266 consecutive CRT-D patients with class III or IV heart failure, QRS duration ≥120 msec, and ejection fractions ≤ 35% were prospectively studied. Dyssynchrony was assessed before and 6 months after CRT-D using speckle-tracking radial strain anteroseptal-to-posterior wall delay, predefined as ≥130 msec. Ventricular arrhythmias were predefined as appropriate antitachycardia pacing or shock, and the combined end point of ventricular arrhythmias, death, transplantation, or left ventricular assist device implantation was followed over 2 years. RESULTS Of the initial 266 patients, 11 died, five underwent transplantation, three received left ventricular assist devices before their 6-month echocardiographic examinations, 19 (7%) had inadequate speckle-tracking at 6-month follow-up, and 27 (10%) were lost to follow-up. Accordingly, the study group consisted of 201 patients. Dyssynchrony after CRT-D was observed in 79 (39%) and was associated with a significantly higher ventricular arrhythmic event rate: 21% (P < .001) with persistent dyssynchrony and 35% (P < .001) with new dyssynchrony, compared with 8% with no dyssynchrony after CRT-D. The combined end point of ventricular arrhythmias, death, transplantation, or left ventricular assist device implantation was significantly associated with dyssynchrony after CRT-D (hazard ratio, 2.53; 95% confidence interval, 1.49-4.28; P = .001). Dyssynchrony after CRT-D was associated with ventricular arrhythmias or death in patient subgroups by cardiomyopathy type, QRS width, and morphology (P < .05 for all). CONCLUSIONS Persistent or new radial dyssynchrony after CRT-D in severely symptomatic patients with heart failure with widened QRS complexes and reduced ejection fractions was associated with an increased rate of ventricular arrhythmias or death and appears to be a marker for a less favorable prognosis.
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Affiliation(s)
| | - Josef J Marek
- The University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | - Keiko Ryo
- The University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | | | - Samir Saba
- The University of Pittsburgh, Pittsburgh, Pennsylvania
| | - John Gorcsan
- The University of Pittsburgh, Pittsburgh, Pennsylvania.
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Adelstein E, Alam MB, Schwartzman D, Jain S, Marek J, Gorcsan J, Saba S. Effect of echocardiography-guided left ventricular lead placement for cardiac resynchronization therapy on mortality and risk of defibrillator therapy for ventricular arrhythmias in heart failure patients (from the Speckle Tracking Assisted Resynchronization Therapy for Electrode Region [STARTER] trial). Am J Cardiol 2014; 113:1518-22. [PMID: 24630387 DOI: 10.1016/j.amjcard.2014.01.431] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 01/28/2014] [Accepted: 01/28/2014] [Indexed: 10/25/2022]
Abstract
Echocardiography-guided left ventricular (LV) lead placement at the site of latest mechanical activation improves heart failure outcomes in patients receiving a cardiac resynchronization therapy defibrillator (CRT-D). In this study, we test the hypothesis that a strategy of echocardiography-guided LV lead placement improves patient survival rate free from appropriate CRT-D therapy for ventricular arrhythmias. Patients enrolled in the prospective, randomized Speckle Tracking Assisted Resynchronization Therapy for Electrode Region trial and treated with a CRT-D device (108 with the echo-guided strategy and 75 with the routine strategy) were followed to the end point of death or first appropriate CRT-D therapy. Over a follow-up period of 3.7 ± 2.1 years, 62 patients (33%) died and 40 (22%) received appropriate CRT-D therapy. Compared with the routine group, patients in the echo-guided group had improved CRT-D therapy-free survival rate (hazard ratio = 0.64, 95% confidence interval = 0.42 to 0.98, p = 0.038). Patients randomized to the echo-guided LV lead placement were more likely to resynchronize their LV compared with the routine group (72% vs 48%, respectively, p = 0.006). Patients whose LV did resynchronize after CRT-D had improved therapy-free survival rate compared with those whose LV did not resynchronize (hazard ratio = 0.49, 95% confidence interval = 0.28 to 0.86, p = 0.012). In conclusion, a strategy of echo-guided LV lead placement improved the patient survival rate free from defibrillator therapy in CRT-D recipients.
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Echocardiography-guided left ventricular lead placement for cardiac resynchronization therapy in ischemic vs nonischemic cardiomyopathy patients. Heart Rhythm 2014; 11:614-9. [DOI: 10.1016/j.hrthm.2014.01.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Indexed: 11/20/2022]
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Introduction to indexes for cardiac resynchronization therapy (CRT) indication. J Med Ultrason (2001) 2014; 41:261-74. [PMID: 27277786 DOI: 10.1007/s10396-013-0499-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Right ventricular apical pacing–induced left ventricular dyssynchrony is associated with a subsequent decline in ejection fraction. Heart Rhythm 2014; 11:602-8. [DOI: 10.1016/j.hrthm.2013.12.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Indexed: 11/30/2022]
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Bilchick KC, Kuruvilla S, Hamirani YS, Ramachandran R, Clarke SA, Parker KM, Stukenborg GJ, Mason P, Ferguson JD, Moorman JR, Malhotra R, Mangrum JM, Darby AE, Dimarco J, Holmes JW, Salerno M, Kramer CM, Epstein FH. Impact of mechanical activation, scar, and electrical timing on cardiac resynchronization therapy response and clinical outcomes. J Am Coll Cardiol 2014; 63:1657-66. [PMID: 24583155 DOI: 10.1016/j.jacc.2014.02.533] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/02/2014] [Accepted: 02/04/2014] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Using cardiac magnetic resonance (CMR), we sought to evaluate the relative influences of mechanical, electrical, and scar properties at the left ventricular lead position (LVLP) on cardiac resynchronization therapy (CRT) response and clinical events. BACKGROUND CMR cine displacement encoding with stimulated echoes (DENSE) provides high-quality strain for overall dyssynchrony (circumferential uniformity ratio estimate [CURE] 0 to 1) and timing of onset of circumferential contraction at the LVLP. CMR DENSE, late gadolinium enhancement, and electrical timing together could improve upon other imaging modalities for evaluating the optimal LVLP. METHODS Patients had complete CMR studies and echocardiography before CRT. CRT response was defined as a 15% reduction in left ventricular end-systolic volume. Electrical activation was assessed as the time from QRS onset to LVLP electrogram (QLV). Patients were then followed for clinical events. RESULTS In 75 patients, multivariable logistic modeling accurately identified the 40 patients (53%) with CRT response (area under the curve: 0.95 [p < 0.0001]) based on CURE (odds ratio [OR]: 2.59/0.1 decrease), delayed circumferential contraction onset at LVLP (OR: 6.55), absent LVLP scar (OR: 14.9), and QLV (OR: 1.31/10 ms increase). The 33% of patients with CURE <0.70, absence of LVLP scar, and delayed LVLP contraction onset had a 100% response rate, whereas those with CURE ≥0.70 had a 0% CRT response rate and a 12-fold increased risk of death; the remaining patients had a mixed response profile. CONCLUSIONS Mechanical, electrical, and scar properties at the LVLP together with CMR mechanical dyssynchrony are strongly associated with echocardiographic CRT response and clinical events after CRT. Modeling these findings holds promise for improving CRT outcomes.
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Affiliation(s)
- Kenneth C Bilchick
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia.
| | - Sujith Kuruvilla
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - Yasmin S Hamirani
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - Raghav Ramachandran
- Department of Biomedical Engineering, University of Virginia Health System, Charlottesville, Virginia
| | - Samantha A Clarke
- Department of Biomedical Engineering, University of Virginia Health System, Charlottesville, Virginia
| | - Katherine M Parker
- Department of Biomedical Engineering, University of Virginia Health System, Charlottesville, Virginia
| | - George J Stukenborg
- Department of Public Health Sciences, University of Virginia Health System, Charlottesville, Virginia
| | - Pamela Mason
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - John D Ferguson
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - J Randall Moorman
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - Rohit Malhotra
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - J Michael Mangrum
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - Andrew E Darby
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - John Dimarco
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia
| | - Jeffrey W Holmes
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia; Department of Biomedical Engineering, University of Virginia Health System, Charlottesville, Virginia
| | - Michael Salerno
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia; Department of Biomedical Engineering, University of Virginia Health System, Charlottesville, Virginia; Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Virginia
| | - Christopher M Kramer
- Department of Medicine, Cardiovascular Division, University of Virginia Health System, Charlottesville, Virginia; Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Virginia
| | - Frederick H Epstein
- Department of Biomedical Engineering, University of Virginia Health System, Charlottesville, Virginia; Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Virginia
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