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Pruszczyk A, Zawadka M, Andruszkiewicz P, LaVia L, Herpain A, Sato R, Dugar S, Chew MS, Sanfilippo F. Mortality in patients with septic cardiomyopathy identified by longitudinal strain by speckle tracking echocardiography: An updated systematic review and meta-analysis with trial sequential analysis. Anaesth Crit Care Pain Med 2024; 43:101339. [PMID: 38128732 DOI: 10.1016/j.accpm.2023.101339] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/27/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Septic cardiomyopathy is associated with poor outcomes but its definition remains unclear. In a previous meta-analysis, left ventricular (LV) longitudinal strain (LS) showed significant prognostic value in septic patients, but findings were not robust due to a limited number of studies, differences in effect size and no adjustment for confounders. METHODS We conducted an updated systematic review (PubMed and Scopus up to 14.02.2023) and meta-analysis to investigate the association between LS and survival in septic patients. We included studies reporting global (from three apical views) or regional LS (one or two apical windows). A secondary analysis evaluated the association between LV ejection fraction (EF) and survival using data from the selected studies. RESULTS We included fourteen studies (1678 patients, survival 69.6%) and demonstrated an association between better performance (more negative LS) and survival with a mean difference (MD) of -1.45%[-2.10, -0.80] (p < 0.0001;I2 = 42%). No subgroup differences were found stratifying studies according to number of views used to calculate LS (p = 0.31;I2 = 16%), severity of sepsis (p = 0.42;I2 = 0%), and sepsis criteria (p = 0.59;I2 = 0%). Trial sequential analysis and sensitivity analyses confirmed the primary findings. Grade of evidence was low. In the included studies, thirteen reported LVEF and we found an association between higher LVEF and survival (MD = 2.44% [0.44,4.45]; p = 0.02;I2 = 42%). CONCLUSIONS We confirmed that more negative LS values are associated with higher survival in septic patients. The clinical relevance of this difference and whether the use of LS may improve understanding of septic cardiomyopathy and prognostication deserve further investigation. The association found between LVEF and survival is of unlikely clinical meaning. REGISTRATION PROSPERO number CRD42023432354.
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Affiliation(s)
- Andrzej Pruszczyk
- 2nd Department of Anesthesiology and Intensive Care, Medical University of Warsaw, Poland
| | - Mateusz Zawadka
- 2nd Department of Anesthesiology and Intensive Care, Medical University of Warsaw, Poland
| | - Pawel Andruszkiewicz
- 2nd Department of Anesthesiology and Intensive Care, Medical University of Warsaw, Poland
| | - Luigi LaVia
- Department of Anesthesia and Intensive Care, "Policlinico-San Marco" University Hospital, Catania, Italy
| | - Antoine Herpain
- Department of Intensive Care, St.-Pierre University Hospital, Université Libre de Bruxelles, 1050 Brussels, Belgium; Experimental Laboratory of Intensive Care, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Ryota Sato
- Department of Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Siddharth Dugar
- Department of Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Michelle S Chew
- Department of Anaesthesia and Intensive Care, Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Filippo Sanfilippo
- Department of Anesthesia and Intensive Care, "Policlinico-San Marco" University Hospital, Catania, Italy; Department of General Surgery and Medico-Surgical Specialties, School of Anaesthesia and Intensive Care, University of Catania, Catania, Italy.
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Santonocito C, Sato R, Dugar S, Sanfilippo F. The importance of assessing left ventricular longitudinal function in presence of increased afterload. Crit Care 2024; 28:21. [PMID: 38217007 PMCID: PMC10785471 DOI: 10.1186/s13054-024-04801-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 01/05/2024] [Indexed: 01/14/2024] Open
Affiliation(s)
- Cristina Santonocito
- Department of Anaesthesia and Intensive Care, A.O.U. Policlinico-San Marco, Site "Policlinico G. Rodolico", Via S. Sofia N 78, 95123, Catania, Italy
| | - Ryota Sato
- Division of Critical Care Medicine, Department of Medicine, The Queen's Medical Center, Honululu, HI, USA
| | - Siddharth Dugar
- Department of Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, USA
- Cleveland Clinic Lerner College of Medicine, Cleveland, OH, USA
| | - Filippo Sanfilippo
- Department of Anaesthesia and Intensive Care, A.O.U. Policlinico-San Marco, Site "Policlinico G. Rodolico", Via S. Sofia N 78, 95123, Catania, Italy.
- Department of General Surgery and Medical-Surgical Specialties, Section of Anesthesia and Intensive Care, University of Catania, Catania, Italy.
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3
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Chawla S, Sato R, Duggal A, Alwakeel M, Hasegawa D, Alayan D, Collier P, Sanfilippo F, Lanspa M, Dugar S. Correlation between tissue Doppler-derived left ventricular systolic velocity (S') and left ventricle ejection fraction in sepsis and septic shock: a retrospective cohort study. J Intensive Care 2023; 11:28. [PMID: 37400918 DOI: 10.1186/s40560-023-00678-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/25/2023] [Indexed: 07/05/2023] Open
Abstract
BACKGROUND Tissue Doppler-derived left ventricular systolic velocity (mitral S') has shown excellent correlation to left ventricular ejection fraction (LVEF) in non-critically patients. However, their correlation in septic patients remains poorly understood and its impact on mortality is undetermined. We investigated the relationship between mitral S' and LVEF in a large cohort of critically-ill septic patients. METHODS We conducted a retrospective cohort study between 01/2011 and 12/2020. All adult patients (≥ 18 years) who were admitted to the medical intensive care unit (MICU) with sepsis and septic shock that underwent a transthoracic echocardiogram (TTE) within 72 h were included. Pearson correlation test was used to assess correlation between average mitral S' and LVEF. Pearson correlation was used to assess correlation between average mitral S' and LVEF. We also assessed the association between mitral S', LVEF and 28-day mortality. RESULTS 2519 patients met the inclusion criteria. The study population included 1216 (48.3%) males with a median age of 64 (IQR: 53-73), and a median APACHE III score of 85 (IQR: 67, 108). The median septal, lateral, and average mitral S' were 8 cm/s (IQR): 6.0, 10.0], 9 cm/s (IQR: 6.0, 10.0), and 8.5 cm/s (IQR: 6.5, 10.5), respectively. Mitral S' was noted to have moderate correlation with LVEF (r = 0.46). In multivariable logistic regression analysis, average mitral S' was associated with an increase in both 28-day ICU and in-hospital mortality with odds ratio (OR) 1.04 (95% CI 1.01-1.08, p = 0.02) and OR 1.04 (95% CI 1.01-1.07, p = 0.02), respectively. CONCLUSIONS Even though mitral S' and LVEF may be related, they are not exchangeable and were only found to have moderate correlation in this study. LVEF is U-shaped, while mitral S' has a linear relation with 28-day ICU mortality. An increase in average mitral S' was associated with higher 28-day mortality.
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Affiliation(s)
- Sanchit Chawla
- Department of Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Ryota Sato
- Department of Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Abhijit Duggal
- Department of Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, USA
- Cleveland Clinic Lerner College of Medicine, Case Western University Reserve University, Cleveland, OH, USA
| | - Mahmoud Alwakeel
- Department of Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Daisuke Hasegawa
- Department of Internal Medicine, Mount Sinai Beth Israel, New York, NY, USA
| | - Dina Alayan
- Department of Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Patrick Collier
- Department of Cardiovascular Medicine, Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Filippo Sanfilippo
- Anaesthesiology and Intensive Care, University of Catania, Catania, Italy
- Policlinico-San Marco University Hospital, Catania, Italy
| | - Michael Lanspa
- Critical Care Echocardiography Service, Intermountain Medical Center, Murray, UT, USA
- Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, UT, USA
| | - Siddharth Dugar
- Department of Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, USA.
- Cleveland Clinic Lerner College of Medicine, Case Western University Reserve University, Cleveland, OH, USA.
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Monge García MI, Jian Z, Hatib F, Settles JJ, Cecconi M, Pinsky MR. Relationship between intraventricular mechanical dyssynchrony and left ventricular systolic and diastolic performance: An in vivo experimental study. Physiol Rep 2023; 11:e15607. [PMID: 36808901 PMCID: PMC9937795 DOI: 10.14814/phy2.15607] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/13/2023] [Accepted: 01/23/2023] [Indexed: 02/19/2023] Open
Abstract
Left ventricular mechanical dyssynchrony (LVMD) refers to the nonuniformity in mechanical contraction and relaxation timing in different ventricular segments. We aimed to determine the relationship between LVMD and LV performance, as assessed by ventriculo-arterial coupling (VAC), LV mechanical efficiency (LVeff ), left ventricular ejection fraction (LVEF), and diastolic function during sequential experimental changes in loading and contractile conditions. Thirteen Yorkshire pigs submitted to three consecutive stages with two opposite interventions each: changes in afterload (phenylephrine/nitroprusside), preload (bleeding/reinfusion and fluid bolus), and contractility (esmolol/dobutamine). LV pressure-volume data were obtained with a conductance catheter. Segmental mechanical dyssynchrony was assessed by global, systolic, and diastolic dyssynchrony (DYS) and internal flow fraction (IFF). Late systolic LVMD was related to an impaired VAC, LVeff , and LVEF, whereas diastolic LVMD was associated with delayed LV relaxation (logistic tau), decreased LV peak filling rate, and increased atrial contribution to LV filling. The hemodynamic factors related to LVMD were contractility, afterload, and heart rate. However, the relationship between these factors differed throughout the cardiac cycle. LVMD plays a significant role in LV systolic and diastolic performance and is associated with hemodynamic factors and intraventricular conduction.
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Affiliation(s)
| | | | | | | | - Maurizio Cecconi
- Department Anaesthesia and Intensive Care Units, Humanitas Research HospitalHumanitas UniversityMilanItaly
| | - Michael R. Pinsky
- Department of Critical Care MedicineUniversity of Pittsburgh School of MedicinePittsburghPennsylvaniaUSA
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Unno K, Sano M, Kaneko Y, Akita K, Sakakibara T, Sato R, Narumi T, Iguchi K, Mogi S, Suwa K, Naruse Y, Ohtani H, Saotome M, Urushida T, Maekawa Y. Safety of a Cardiac Resynchronization Therapy Device Implantation in a Patient with Unstable Heart Failure Who Require Impella-Device Assistance. Int Heart J 2022; 63:623-626. [DOI: 10.1536/ihj.21-616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Kyoko Unno
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Makoto Sano
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Yutaro Kaneko
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Keitaro Akita
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Tomoaki Sakakibara
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Ryota Sato
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Taro Narumi
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Keisuke Iguchi
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Satoshi Mogi
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Kenichiro Suwa
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Yoshihisa Naruse
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Hayato Ohtani
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Masao Saotome
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Tsuyoshi Urushida
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
| | - Yuichiro Maekawa
- Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine
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Mele D, Trevisan F, Fiorencis A, Smarrazzo V, Bertini M, Ferrari R. Current Role of Echocardiography in Cardiac Resynchronization Therapy: from Cardiac Mechanics to Flow Dynamics Analysis. Curr Heart Fail Rep 2021; 17:384-396. [PMID: 32979151 DOI: 10.1007/s11897-020-00484-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE OF REVIEW The aim of this review is to summarily explain what LV synchrony, coordination, myocardial work, and flow dynamics are, trying to clarify their advantages and limitations in the treatment of heart failure patients undergoing or with implanted cardiac resynchronization therapy (CRT). RECENT FINDINGS CRT is an established treatment for patients with heart failure and left ventricular systolic dysfunction. In the current guidelines, CRT implant indications rely only on electrical dyssynchrony, but in the last years, many aspects of cardiac mechanics (including contractile synchrony, coordination, propagation, and myocardial work) and flow dynamics have been studied using echocardiographic techniques to better characterize patients undergoing or with implanted CRT. However, the concepts, limits, and potential applications of all these echocardiographic evaluations are unclear to most clinicians. The use of left ventricular dyssynchrony and discoordination indices may help to identify those significant mechanical alterations whose correction may increase the probability of a favorable CRT response. Assessment of myocardial work and intracardiac flow dynamics may overcome some limitations of the conventional evaluation of cardiac mechanics but more investigations are needed before extensive clinical application.
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Affiliation(s)
- Donato Mele
- Cardiac Unit, Azienda Ospedaliero-Universitaria, Via Aldo Moro 8, 44124, Cona (Ferrara), Italy.
| | - Filippo Trevisan
- Cardiac Unit, Azienda Ospedaliero-Universitaria, Via Aldo Moro 8, 44124, Cona (Ferrara), Italy
| | - Andrea Fiorencis
- Cardiac Unit, Azienda Ospedaliero-Universitaria, Via Aldo Moro 8, 44124, Cona (Ferrara), Italy
| | - Vittorio Smarrazzo
- Cardiac Unit, Azienda Ospedaliero-Universitaria, Via Aldo Moro 8, 44124, Cona (Ferrara), Italy
| | - Matteo Bertini
- Cardiac Unit, Azienda Ospedaliero-Universitaria, Via Aldo Moro 8, 44124, Cona (Ferrara), Italy
| | - Roberto Ferrari
- Cardiac Unit, Azienda Ospedaliero-Universitaria, Via Aldo Moro 8, 44124, Cona (Ferrara), Italy
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7
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Zhu M, Wang Y, Cheng Y, Su Y, Chen H, Shu X. The value of non-invasive myocardial work indices derived from left ventricular pressure-strain loops in predicting the response to cardiac resynchronization therapy. Quant Imaging Med Surg 2021; 11:1406-1420. [PMID: 33816178 DOI: 10.21037/qims-20-754] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background Non-invasive left ventricular (LV) pressure-strain loops (PSLs), which are generated by combining LV longitudinal strain with brachial artery blood pressure, provide a novel method of quantifying global and segmental myocardial work (MW) indices with potential advantages over conventional echocardiographic strain data, which suffers from being load-dependent. This method has been recently introduced in echocardiographic software, enhancing the efficiency of MW calculations. This study aimed to evaluate the role of non-invasive MW indices derived from LV PSLs in predicting cardiac resynchronization therapy (CRT) response. Methods A total of 106 heart failure (HF) patients scheduled for CRT were included in the MW analysis. Global and segmental (septal and lateral at the mid-ventricular level) MW indices were assessed before CRT and at a 6-month follow-up. Response to CRT was defined as ≥15% reduction in LV end-systolic volume and ≥1 NYHA functional class improvement at 6-month follow-up compared to baseline. Results CRT response was observed in 78 (74%) patients. At baseline, the global work index (GWI) and global constructive work (GCW) were significantly higher in CRT responders than in non-responders (both P<0.05). Furthermore, responders exhibited significantly higher mid lateral MW and mid lateral constructive work (CW) (both P<0.001), but significantly lower mid septal MWI and mid septal myocardial work efficiency (MWE) than non-responders (all P<0.01). Baseline mid septal MWE (OR 0.975, 95% CI: 0.959-0.990, P=0.002) and mid lateral MWI (OR 1.003, 95% CI: 1.002-1.004, P<0.001) were identified as independent predictors of CRT response in multivariate regression analysis. Mid septal MWE ≤42% combined with mid lateral MWI ≥740 mmHg% predicted CRT response, with an optimal sensitivity of 79% and specificity of 82% [area under the receiver operating characteristic curve (AUC) =0.830, P<0.001]. Conclusions Assessment of MW indices before CRT could identify the marked imbalance in LV MW distribution and can be widely used as a reliable complementary tool for guiding patient selection for CRT in clinical practice.
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Affiliation(s)
- Mengruo Zhu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yanan Wang
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yufei Cheng
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yangang Su
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Haiyan Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
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Prinzen FW, Willemen E, Lumens J. LBBB and High Afterload. JACC Cardiovasc Imaging 2019; 12:978-980. [DOI: 10.1016/j.jcmg.2017.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 12/01/2017] [Accepted: 12/04/2017] [Indexed: 11/28/2022]
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Left ventricular systolic function evaluated by strain echocardiography and relationship with mortality in patients with severe sepsis or septic shock: a systematic review and meta-analysis. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2018; 22:183. [PMID: 30075792 PMCID: PMC6091069 DOI: 10.1186/s13054-018-2113-y] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 07/03/2018] [Indexed: 01/25/2023]
Abstract
Background Sepsis-induced myocardial dysfunction is associated with poor outcomes, but traditional measurements of systolic function such as left ventricular ejection fraction (LVEF) do not directly correlate with prognosis. Global longitudinal strain (GLS) utilizing speckle-tracking echocardiography (STE) could be a better marker of intrinsic left ventricular (LV) function, reflecting myocardial deformation rather than displacement and volume changes. We sought to investigate the prognostic value of GLS in patients with sepsis and/or septic shock. Methods We conducted a systematic review (PubMed and Embase up to 26 October 2017) and meta-analysis to investigate the association between GLS and mortality at longest follow up in patients with severe sepsis and/or septic shock. In the primary analysis, we included studies reporting transthoracic echocardiography data on GLS according to mortality. A secondary analysis evaluated the association between LVEF and mortality including data from studies reporting GLS. Results We included eight studies in the primary analysis with a total of 794 patients (survival 68%, n = 540). We found a significant association between worse LV function and GLS values and mortality: standard mean difference (SMD) − 0.26; 95% confidence interval (CI) − 0.47, − 0.04; p = 0.02 (low heterogeneity, I2 = 43%). No significant association was found between LVEF and mortality in the same population of patients (eight studies; SMD, 0.02; 95% CI − 0.14, 0.17; p = 0.83; no heterogeneity, I2 = 3%). Conclusions Worse GLS (less negative) values are associated with higher mortality in patients with severe sepsis or septic shock, while such association is not valid for LVEF. More critical care research is warranted to confirm the better ability of STE in demonstrating underlying intrinsic myocardial disease compared to LVEF. Electronic supplementary material The online version of this article (10.1186/s13054-018-2113-y) contains supplementary material, which is available to authorized users.
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10
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Mele D, Bertini M, Malagù M, Nardozza M, Ferrari R. Current role of echocardiography in cardiac resynchronization therapy. Heart Fail Rev 2018; 22:699-722. [PMID: 28714039 DOI: 10.1007/s10741-017-9636-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cardiac resynchronization therapy (CRT) is an established treatment for patients with heart failure and left ventricular systolic dysfunction. Patients are usually assessed by echocardiography, which provides a number of anatomical and functional information used for cardiac dyssynchrony assessment, prognostic stratification, identification of the optimal site of pacing in the left ventricle, optimization of the CRT device, and patient follow-up. Compared to other cardiac imaging techniques, echocardiography has the advantage to be non-invasive, repeatable, and safe, without exposure to ionizing radiation or nefrotoxic contrast. In this article, we review current evidence about the role of echocardiography before, during, and after the implantation of a CRT device.
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Affiliation(s)
- Donato Mele
- Centro Cardiologico Universitario and LTTA Centre, University of Ferrara, Ferrara, Italy. .,Noninvasive Cardiology Unit, Azienda Ospedaliero-Universitaria, Via Aldo Moro 8, 44124, Ferrara, Cona, Italy.
| | - Matteo Bertini
- Centro Cardiologico Universitario and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Michele Malagù
- Centro Cardiologico Universitario and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Marianna Nardozza
- Centro Cardiologico Universitario and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Roberto Ferrari
- Centro Cardiologico Universitario and LTTA Centre, University of Ferrara, Ferrara, Italy.,Maria Cecilia Hospital, GVM Care & Research, E.S. Health Science Foundation, Cotignola, RA, Italy
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11
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Mele D, Luisi GA, Malagù M, Laterza A, Ferrari R, Bertini M. Echocardiographic evaluation of cardiac dyssynchrony: Does it still matter? Echocardiography 2018; 35:707-715. [PMID: 29719067 DOI: 10.1111/echo.13902] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Cardiac resynchronization therapy (CRT) is an established treatment for patients with heart failure and left ventricular systolic dysfunction. For many years, cardiac mechanical dyssynchrony assessed by echocardiography has been considered as a key evaluation to characterize CRT candidates and predict CRT response. In current guidelines, however, CRT implant indications rely only on electrical dyssynchrony. The aim of this article was to clarify whether and how the evaluation of cardiac mechanical dyssynchrony should be performed today by echocardiography.
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Affiliation(s)
- Donato Mele
- Cardiology Unit and LTTA Center, University of Ferrara, Ferrara, Italy
| | | | - Michele Malagù
- Cardiology Unit and LTTA Center, University of Ferrara, Ferrara, Italy
| | - Anna Laterza
- Cardiology Unit and LTTA Center, University of Ferrara, Ferrara, Italy
| | - Roberto Ferrari
- Cardiology Unit and LTTA Center, University of Ferrara, Ferrara, Italy.,Maria Cecilia Hospital, GVM Care & Research, E.S. Health Science Foundation, Cotignola, Italy
| | - Matteo Bertini
- Cardiology Unit and LTTA Center, University of Ferrara, Ferrara, Italy
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12
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Galli E, Leclercq C, Fournet M, Hubert A, Bernard A, Smiseth OA, Mabo P, Samset E, Hernandez A, Donal E. Value of Myocardial Work Estimation in the Prediction of Response to Cardiac Resynchronization Therapy. J Am Soc Echocardiogr 2018; 31:220-230. [DOI: 10.1016/j.echo.2017.10.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Indexed: 10/18/2022]
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13
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Risum N, Tayal B, Hansen TF, Bruun NE, Jensen MT, Lauridsen TK, Saba S, Kisslo J, Gorcsan J, Sogaard P. Identification of Typical Left Bundle Branch Block Contraction by Strain Echocardiography Is Additive to Electrocardiography in Prediction of Long-Term Outcome After Cardiac Resynchronization Therapy. J Am Coll Cardiol 2016; 66:631-41. [PMID: 26248989 DOI: 10.1016/j.jacc.2015.06.020] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 05/07/2015] [Accepted: 06/02/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND Current guidelines suggest that patients with left bundle branch block (LBBB) be treated with cardiac resynchronization therapy (CRT); however, one-third do not have a significant activation delay, which can result in nonresponse. By identifying characteristic opposing wall contraction, 2-dimensional strain echocardiography (2DSE) may detect true LBBB activation. OBJECTIVES This study sought to investigate whether the absence of a typical LBBB mechanical activation pattern by 2DSE was associated with unfavorable long-term outcome and if this is additive to electrocardiographic (ECG) morphology and duration. METHODS From 2 centers, 208 CRT candidates (New York Heart Association classes II to IV, ejection fraction ≤35%, QRS duration ≥120 ms) with LBBB by ECG were prospectively included. Before CRT implantation, longitudinal strain in the apical 4-chamber view determined whether typical LBBB contraction was present. The pre-defined outcome was freedom from death, left ventricular assist device, or heart transplantation over 4 years. RESULTS Two-thirds of patients (63%) had a typical LBBB contraction pattern. During 4 years, 48 patients (23%) reached the primary endpoint. Absence of a typical LBBB contraction was independently associated with increased risk of adverse outcome after adjustment for ischemic heart disease and QRS width (hazard ratio [HR]: 3.1; 95% CI: 1.64 to 5.88; p < 0.005). Adding pattern assessment to a risk prediction model including QRS duration and ischemic heart disease significantly improved the net reclassification index to 0.14 (p = 0.04) and improved the C-statistics (0.63 [95% CI: 0.54 to 0.72] vs. 0.71 [95% CI: 0.63 to 0.80]; p = 0.02). Use of strict LBBB ECG criteria was not independently associated with outcome in the multivariate model (HR: 1.72; 95% CI: 0.89 to 3.33; p = 0.11. Assessment of LBBB contraction pattern was superior to time-to-peak indexes of dyssynchrony (p < 0.01 for all). CONCLUSIONS Contraction pattern assessment to identify true LBBB activation provided important prognostic information in CRT candidates.
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Affiliation(s)
- Niels Risum
- Department of Cardiology, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark.
| | - Bhupendar Tayal
- Division of Cardiology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Cardiology and Clinical Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - Thomas F Hansen
- Department of Cardiology, Gentofte University Hospital, Hellerup, Denmark
| | - Niels E Bruun
- Division of Cardiology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Cardiology, Gentofte University Hospital, Hellerup, Denmark
| | | | - Trine K Lauridsen
- Department of Cardiology, Gentofte University Hospital, Hellerup, Denmark
| | - Samir Saba
- Division of Cardiology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Joseph Kisslo
- Division of Cardiovascular Medicine, Duke University Medical Center, Durham, North Carolina
| | - John Gorcsan
- Division of Cardiology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Peter Sogaard
- Department of Cardiology and Clinical Medicine, Aalborg University Hospital, Aalborg, Denmark
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Marechaux S, Menet A, Guyomar Y, Ennezat PV, Guerbaai RA, Graux P, Tribouilloy C. Role of echocardiography before cardiac resynchronization therapy: new advances and current developments. Echocardiography 2016; 33:1745-1752. [DOI: 10.1111/echo.13334] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Sylvestre Marechaux
- Lille North of France University/Catholic University Hospital/Catholic School of Medicine; Cardiology Department; Lille Catholic University; Lille France
- INSERM U 1088; University of Picardie; Amiens France
| | - Aymeric Menet
- Lille North of France University/Catholic University Hospital/Catholic School of Medicine; Cardiology Department; Lille Catholic University; Lille France
- INSERM U 1088; University of Picardie; Amiens France
| | - Yves Guyomar
- Lille North of France University/Catholic University Hospital/Catholic School of Medicine; Cardiology Department; Lille Catholic University; Lille France
| | | | - Raphaëlle Ashley Guerbaai
- Cardiology Department; Grenoble University Hospital; Grenoble France
- Cardiovascular and Thoracic Department; Amiens University Hospital; Amiens France
| | - Pierre Graux
- Lille North of France University/Catholic University Hospital/Catholic School of Medicine; Cardiology Department; Lille Catholic University; Lille France
| | - Christophe Tribouilloy
- INSERM U 1088; University of Picardie; Amiens France
- Cardiovascular and Thoracic Department; Amiens University Hospital; Amiens France
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15
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Sequential radial and circumferential strain and oxidative stress assessment in dogs with tachycardia-induced cardiac dysfunction. Int J Cardiovasc Imaging 2015; 32:583-91. [DOI: 10.1007/s10554-015-0812-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 11/20/2015] [Indexed: 10/22/2022]
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16
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Takahashi N, Sato N, Ishikawa M, Kikuchi A, Hanaoka D, Ishihara S, Amitani K, Sakai Y, Sakai N, Kumita SI, Shimizu W. Long-term Hemodialysis Corrects Left Ventricular Dyssynchrony in End-stage Renal Disease: A Study with Gated Technetium-99m Sestamibi Myocardial Perfusion Single-photon Emission Computed Tomography. J NIPPON MED SCH 2015; 82:76-83. [PMID: 25959198 DOI: 10.1272/jnms.82.76] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Left ventricular (LV) dyssynchrony is common in patients with end-stage renal disease (ESRD), and echocardiographic assessment has shown that it can be improved by a single session of hemodialysis (HD). The aim of this study was to assess the effects of chronic HD on LV dyssynchrony in patients ESRD by means of gated technetium-99m sestamibi myocardial perfusion single-photon emission computed tomography (GSPECT) with phase analysis. MATERIALS AND METHODS Twelve patients with ESRD underwent GSPECT and echocardiography before the start of long-term HD (baseline) and 3 months later. In addition, 7 control subjects matched for age and sex underwent GSPECT and echocardiography within a 2-month period. To evaluate LV dyssynchrony, both histogram bandwidth (HBW) and phase standard deviation (PSD) were determined with phase analysis of GSPECT images. The end-diastolic volume (EDV), end-systolic volume (ESV), and ejection fraction were also measured with GSPECT, and the LV mass index (LVMI) was measured with echocardiography. The LV dyssynchrony, volume, function, and mass were compared among control subjects, patients with ESRD at baseline, and patients with ESRD after 3 months of chronic HD. RESULTS The LV dyssynchrony, volume, and mass at baseline were significantly greater in patients with ESRD than in control subjects (HBW, 65.5°±54.4° vs. 22.3°±7.5°, P<0.05; PSD, 21.0°±15.5° vs. 7.6°±5.5°, P<0.05; EDV, 105.7±29.2 vs. 72.3±13.9 mL, P<0.05; ESV, 44.3±22.1 vs. 20.9±10.3 mL, P<0.05; LVMI, 136.5±48.3 vs. 65.4±5.6 g/m(2), P<0.01). From baseline to the third month of chronic HD, there were significant increases in EDV (78.6±25.4 vs. 105.7±29.2 mL, P<0.01) and ESV (27.6±16.2 vs. 44.3±22.1 mL, P<0.01) and significant decreases in HBW (65.5°±54.4° vs. 31.0°±15.7°, P<0.01) and PSD (21.0°±15.5° vs. 10.0°±8.2°, P<0.01). CONCLUSION Chronic HD decreased LV dyssynchrony and volume in patients with ESRD. Serial phase analysis of GSPECT images is a useful method of assessing the effects of long-term HD on LV dyssynchrony and volume in patients with ESRD.
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Affiliation(s)
- Naoto Takahashi
- Department of Cardiology, Nippon Medical School Musashi Kosugi Hospital
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17
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Hamabe L, Kim S, Yoshiyuki R, Fukayama T, Nakata TM, Fukushima R, Tanaka R. Echocardiographic evaluation of myocardial changes observed after closure of patent ductus arteriosus in dogs. J Vet Intern Med 2015; 29:126-31. [PMID: 25594430 PMCID: PMC4858090 DOI: 10.1111/jvim.12517] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 09/17/2014] [Accepted: 11/04/2014] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Closure of PDA can be associated with echocardiographic changes including deterioration of LV systolic function. Although PDA is commonly encountered in dogs, few comprehensive reports of echocardiographic changes in dogs with PDA closure are available. OBJECTIVES To evaluate the short-term echocardiographic changes observed after PDA closure in dogs using strain analysis. ANIMALS Seventeen client-owned dogs with left-to-right PDA. METHODS Echocardiographic evaluations, including standard echocardiography and two-dimensional tissue tracking (2DTT), were performed before and within 3 days of PDA closure. RESULTS Preclosure examination showed LV and left atrial dilatation indicating volume overload as a result of PDA. Closure of PDA resulted in significant reduction of LVIDd (<.0001) and LA/Ao (0.01) without change in LVIDs, suggestive of decreased preload. Postclosure LV systolic dysfunction was observed with significant decreased in FS (<.0001) and strain values (P = .0039 for radial strains, P = .0005 for circumferential strains). Additionally, significant LV dyssynchrony (P = .0162) was observed after closure of PDA. CONCLUSIONS AND CLINICAL IMPORTANCE Closure of PDA resulted in decreased preload as a result of alleviation of LV volume overload, which in turn caused transient deterioration of LV systolic function. Additionally, this study demonstrated that strain analysis is load dependent. Therefore, care should be taken when interpreting strain measurements as an indicator of LV systolic function.
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Affiliation(s)
- L Hamabe
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Saiwai-cho 3-5-8, Fuchu, 183-8509, Tokyo
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Menet A, Greffe L, Ennezat PV, Delelis F, Guyomar Y, Castel AL, Guiot A, Graux P, Tribouilloy C, Marechaux S. Is mechanical dyssynchrony a therapeutic target in heart failure with preserved ejection fraction? Am Heart J 2014; 168:909-16.e1. [PMID: 25458655 DOI: 10.1016/j.ahj.2014.08.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 08/02/2014] [Indexed: 01/22/2023]
Abstract
BACKGROUND Previous studies have found a high frequency of mechanical dyssynchrony in patients with heart failure (HF) with preserved ejection fraction (HFpEF), hence suggesting that cardiac resynchronization therapy (CRT) may be considered in HFpEF. The present study was designed to compare the amount of mechanical dyssynchrony between HFpEF patients and (1) HF with reduced EF (HFrEF) patients with an indication for CRT (HFrEF-CRT(+)) group, (2) HFrEF patients with QRS duration < 120 ms (HFrEF-QRS < 120 ms) group, and (3) hypertensive controls (HTN). METHODS Electrical (ECG) and mechanical dyssynchrony (atrio-ventricular dyssynchrony, interventricular dyssynchrony, intraventricular dyssynchrony) were assessed using conventional, tissue Doppler, and Speckle Tracking strain echocardiography in 40 HFpEF patients, 40 age- and sex-matched HTN controls, 40 HFrEF-QRS < 120 ms patients, and 40 HFrEF-CRT(+) patients. RESULTS The frequency of left bundle branch block was low in HFpEF patients (5%) and similar to HTN controls (5%, P = 0.85). Indices of dyssynchrony were similar between HFpEF and HTN patients or HFrEF-QRS < 120 ms patients. In contrast, most indices of dyssynchrony differed between HFpEF and HFrEF-CRT(+) patients. The principal components analysis on the entire cohort of 160 patients yielded 2 homogeneous groups of patients in terms of dyssynchrony, the first comprising HFrEF-CRT(+) patients and the second comprising HTN, HFrEF-QRS < 120 ms and HFpEF patients. CONCLUSIONS Mechanical dyssynchrony in HFpEF does not differ from that of patients with HTN or patients with HFrEF and a narrow QRS. This data raises concerns regarding the role of dyssynchrony in the pathophysiology of HFpEF and thereby the potential usage of CRT in HFpEF.
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Hu W, Zhao QY, Yu SB, Sun B, Chen L, Cao S, Guo RQ. Renal sympathetic denervation inhibits the development of left ventricular mechanical dyssynchrony during the progression of heart failure in dogs. Cardiovasc Ultrasound 2014; 12:47. [PMID: 25416926 PMCID: PMC4255928 DOI: 10.1186/1476-7120-12-47] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Accepted: 11/12/2014] [Indexed: 11/17/2022] Open
Abstract
Background The purpose of this study was to investigate whether transcatheter renal sympathetic denervation (RSD) interfere with the development of left ventricular (LV) mechanical dyssynchrony during the progression of heart failure (HF). Methods Nineteen beagles were randomly divided into sham-operated group (six dogs), control group (seven dogs), and RSD group (six dogs). Sham-operated group were implanted with pacemakers without pacing; Control group were implanted with pacemakers and underwent 3 weeks of rapid right ventricular pacing; and RSD group underwent catheter-based RSD bilaterally and were simultaneously implanted with pacemakers. Both LV strain and LV dyssynchrony were analyzed via 2D speckle-tracking strain echocardiography to evaluate LV function. Longitudinal dyssynchrony was determined as the standard deviation for time-to-peak speckle-tracking strain on apical 4- and 2-chamber views. Radial and circumferential dyssynchrony was determined as the standard deviation for time-to-peak speckle-tracking strain in mid- and base-LV short-axis views. Each myocardial function was also evaluated by averaging the peak systolic strains. LV systolic pressure (LVSP) and LV end-diastolic pressure (LVEDP) were measured. The LV interstitial fibrosis was determined by histological analysis. Plasma angiotensin II (Ang II), aldosterone and norepinephrine (NE) levels were also measured. Results After 3 weeks, all of the dogs in both the control and RSD groups showed greater LV end-diastolic volume compared with the sham-operated group; however, the dogs in the RSD group had a higher LV ejection fraction (LVEF) than the dogs in the control group (p < 0.001). The LV systolic strains were higher in the RSD group than in the control group (p < 0.001 for longitudinal, circumferential and radial strain, respectively). The levels of LV dyssynchrony were lower in the RSD group than in the control group (p < 0.001 for longitudinal, circumferential and radial dyssynchrony, respectively). Compared with dogs with control alone, RSD dogs had lower LV end-diastolic pressures and less fibrous tissue. The levels of plasma Ang II, aldosterone and NE were lower in the RSD group than in the control group. Conclusions RSD inhibites the development of left ventricular mechanical dyssynchrony during the progression of heart failure in dogs.
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Affiliation(s)
| | | | | | | | | | | | - Rui-qiang Guo
- Department of Ultrasound, Renmin Hospital of Wuhan University, Jiefang Road 238#, Wuchang District, Wuhan 430060, China.
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Relationship between Two-Dimensional Speckle-Tracking Septal Strain and Response to Cardiac Resynchronization Therapy in Patients with Left Ventricular Dysfunction and Left Bundle Branch Block: A Prospective Pilot Study. J Am Soc Echocardiogr 2014; 27:501-11. [DOI: 10.1016/j.echo.2014.01.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Indexed: 12/20/2022]
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21
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Lim P, Donal E, Lafitte S, Derumeaux G, Habib G, Réant P, Thivolet S, Lellouche N, Grimm RA, Gueret P. Multicentre study using strain delay index for predicting response to cardiac resynchronization therapy (MUSIC study). Eur J Heart Fail 2014; 13:984-91. [DOI: 10.1093/eurjhf/hfr073] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Pascal Lim
- Cardiovascular department; Henri Mondor University Hospital (APHP and INSERM U841); Créteil France
| | - Erwan Donal
- Pontchaillou University Hospital; Rennes France
| | | | | | | | | | | | - Nicolas Lellouche
- Cardiovascular department; Henri Mondor University Hospital (APHP and INSERM U841); Créteil France
| | | | - Pascal Gueret
- Cardiovascular department; Henri Mondor University Hospital (APHP and INSERM U841); Créteil France
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22
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Cai QZ, Liang Y, Zhu ZH, Lu XZ. Influence of percutaneous atrial septal defect closure on inter- and intra-ventricular mechanical dyssynchrony in adults: evaluation of strain pattern. Int J Cardiovasc Imaging 2014; 30:721-7. [PMID: 24504492 DOI: 10.1007/s10554-014-0385-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 01/31/2014] [Indexed: 11/30/2022]
Abstract
Previous studies using speckle-tracking echocardiography (STE) for quantifying the functions of the right and left ventricles (RV and LV, respectively) in the presence of percutaneous atrial septal defect (ASD) closure have focused on the peak systolic strain (PSS). This study investigated changes in the mechanical dyssynchrony of ventricular contraction before and after ASD closure, issues that have been little addressed in the literature. Thirty-one adults with ASD were studied using two-dimensional STE before and 24 h after ASD closure. Thirty-one healthy age- and sex-matched subjects were recruited as controls. Global and segmental PSS values from the longitudinal, circumferential, and radial directions were analyzed. The time to peak systolic strain (PSST) and the standard deviation of the time to peak strain (SDT) among segments in each direction were calculated, to investigate the inter- and intra-ventricular mechanical dyssynchrony in these patients and improvements after closure. Compared to the control group, patients with ASD had higher RV free-wall longitudinal systolic strain, with increased PSST and SDT. The SDT values of the LV longitudinal and circumferential strains were also increased. By 24 h after ASD closure, the RV free-wall longitudinal strain and its PSST and SDT had reverted to normal levels. The LV circumferential strain was increased, and its SDT was decreased. The contraction period of the RV and myocardial contraction dyssynchrony in the RV and LV were increased in ASD patients. The inter- and intra-ventricular mechanical utilities were improved after percutaneous closure of the ASD.
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MESH Headings
- Adult
- Aged
- Cardiac Catheterization
- Case-Control Studies
- Echocardiography, Doppler
- Female
- Heart Septal Defects, Atrial/complications
- Heart Septal Defects, Atrial/diagnostic imaging
- Heart Septal Defects, Atrial/physiopathology
- Heart Septal Defects, Atrial/therapy
- Humans
- Male
- Middle Aged
- Myocardial Contraction
- Recovery of Function
- Time Factors
- Treatment Outcome
- Ventricular Dysfunction, Left/diagnostic imaging
- Ventricular Dysfunction, Left/etiology
- Ventricular Dysfunction, Left/physiopathology
- Ventricular Dysfunction, Right/diagnostic imaging
- Ventricular Dysfunction, Right/etiology
- Ventricular Dysfunction, Right/physiopathology
- Ventricular Function, Left
- Ventricular Function, Right
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Affiliation(s)
- Qi-Zhe Cai
- Department of Echocardiography, Cardiovascular Institute, Fu Wai Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100037, China
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23
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Early diastolic strain rate predicts response to heart failure therapy in patients with dilated cardiomyopathy. Int J Cardiovasc Imaging 2014; 30:505-13. [DOI: 10.1007/s10554-014-0361-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 01/02/2014] [Indexed: 10/25/2022]
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Cognet T, Vervueren PL, Dercle L, Bastié D, Richaud R, Berry M, Marchal P, Gautier M, Fouilloux A, Galinier M, Carrié D, Massabuau P, Berry I, Lairez O. New concept of myocardial longitudinal strain reserve assessed by a dipyridamole infusion using 2D-strain echocardiography: the impact of diabetes and age, and the prognostic value. Cardiovasc Diabetol 2013; 12:84. [PMID: 23759020 PMCID: PMC3685519 DOI: 10.1186/1475-2840-12-84] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 05/28/2013] [Indexed: 12/20/2022] Open
Abstract
AIMS Although dipyridamole is a widely used pharmacological stress agent, the direct effects on myocardium are not entirely known. Diabetic cardiomyopathy can be investigated by 2D-strain echocardiography. The aim of this study was to assess myocardial functional reserve after dipyridamole infusion using speckle-tracking echocardiography. METHODS Seventy-five patients referred for dipyridamole stress myocardial perfusion gated SPECT (MPGS) were examined by echocardiography to assess a new concept of longitudinal strain reserve (LSR) and longitudinal strain rate reserve (LSRR) respectively defined by the differences of global longitudinal strain (GLS) and longitudinal strain rate between peak stress after dipyridamole and rest. Twelve patients with myocardial ischemia were excluded on the basis of MPGS as gold standard. RESULTS Mean LSR was -2.28±2.19% and was more important in the 28 (44%) diabetic patients (-3.27±1.93%; p=0.001). After multivariate analyses, only diabetes improved LSR (p=0.011) after dipyridamole infusion and was not associated with glycaemic control (p=0.21), insulin therapy (p=0.46) or duration of the disease (p=0.80). Conversely, age (p=0.002) remained associated with a decrease in LSR. LSSR was also correlated to age (p=0.005). Patients with a LSR<0% have a better survival after 15 months (log-rank p=0.0012). CONCLUSION LSR explored by 2D speckle-tracking echocardiography after dipyridamole infusion is a simple and new concept that provides new insights into the impact of diabetes and age on the myocardium with a potential prognostic value.
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Affiliation(s)
- Thomas Cognet
- Department of Nuclear Medicine, University Hospital of Rangueil, Toulouse, France.
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25
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D'Andrea A, Mele D, Nistri S, Riegler L, Galderisi M, Agricola E, Losi MA, Ballo P, Mondillo S, Badano LP. The prognostic impact of dynamic ventricular dyssynchrony in patients with idiopathic dilated cardiomyopathy and narrow QRS. Eur Heart J Cardiovasc Imaging 2013; 14:183-189. [DOI: 10.1093/ehjci/jes154] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/29/2023] Open
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Hayashi SY, Nowak J, Lindholm B, Nascimento MMD, Lind B, Bjällmark A, Larsson M, Pachaly MA, Seeberger A, Riella MC, Brodin L. Left ventricular mechanical dyssynchrony in patients with different stages of chronic kidney disease and the effects of hemodialysis. Hemodial Int 2013; 17:346-58. [DOI: 10.1111/hdi.12017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Shirley Yumi Hayashi
- Department of Medical Engineering, School of Technology and HealthRoyal Institute of Technology Stockholm Sweden
- Divisions of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and TechnologyKarolinska InstitutetKarolinska University Hospital Huddinge Stockholm Sweden
| | - Jacek Nowak
- Department of Laboratory Medicine, Division of Clinical PhysiologyKarolinska InstitutetKarolinska University Hospital Huddinge Stockholm Sweden
| | - Bengt Lindholm
- Divisions of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and TechnologyKarolinska InstitutetKarolinska University Hospital Huddinge Stockholm Sweden
| | - Marcelo Mazza do Nascimento
- Divisions of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and TechnologyKarolinska InstitutetKarolinska University Hospital Huddinge Stockholm Sweden
- Pro‐renal Foundation Curitiba Parana Brazil
| | - Britta Lind
- Department of Medical Engineering, School of Technology and HealthRoyal Institute of Technology Stockholm Sweden
| | - Anna Bjällmark
- Department of Medical Engineering, School of Technology and HealthRoyal Institute of Technology Stockholm Sweden
| | - Matilda Larsson
- Department of Medical Engineering, School of Technology and HealthRoyal Institute of Technology Stockholm Sweden
| | | | - Astrid Seeberger
- Divisions of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and TechnologyKarolinska InstitutetKarolinska University Hospital Huddinge Stockholm Sweden
| | | | - Lars‐Åke Brodin
- Department of Medical Engineering, School of Technology and HealthRoyal Institute of Technology Stockholm Sweden
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Ennezat PV, Maréchaux S, Pibarot P, Le Jemtel TH. Secondary Mitral Regurgitation in Heart Failure with Reduced or Preserved Left Ventricular Ejection Fraction. Cardiology 2013; 125:110-117. [DOI: 10.1159/000350356] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
Secondary mitral regurgitation (MR) has been extensively studied in heart failure due to reduced ejection fraction. In contrast, the occurrence and the pathogenesis of secondary MR are much less known in heart failure with preserved ejection fraction (HFpEF). The present review aimed at describing this common but ignored feature of HFpEF.
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The impact of change in volume and left-ventricular hypertrophy on left-ventricular mechanical dyssynchrony in children with end-stage renal disease. Pediatr Cardiol 2012; 33:1124-30. [PMID: 22441563 DOI: 10.1007/s00246-012-0266-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Accepted: 02/21/2012] [Indexed: 10/28/2022]
Abstract
Left-ventricular dyssynchrony (LVD) adversely affects systolic performance and has not been previously evaluated in children with end-stage renal disease (ESRD). We hypothesized (1) that LVD in children with ESRD would be significantly increased compared with controls and (2) that volume load and left-ventricular hypertrophy (LVH) would be associated with increased LVD. This was a prospective observational study in which real-time three-dimensional echocardiographic data were acquired in 27 stable children with ESRD (13 peritoneal dialysis [PD] and 14 hemodialysis [HD]) and 29 normal controls. Data were acquired before and after an HD session. Dyssynchrony index (SDI) was defined per standard formulae and was normalized to cardiac cycle duration (SDIp). Left-ventricular mass (LVM) was obtained from M-mode echocardiography and was normalized to height(2.7) (LVM index). The mean age (13.8 vs. 11.3 years) and SDI, SDIp, LVM, and LVM index were significantly greater among children with ESRD than among controls (p < 0.05). Demographics and heart rates were comparable between HD and PD subgroups, whereas SDI 16 and 12 segments, SDIp 16 segments, and LVM were significantly greater in the HD group. SDI and SDIp 16 segments improved after an HD session (p < 0.05); LVM and LVM index remained unchanged. LVD was significantly greater in patients with LVH compared with those without LVH. Children with ESRD had significant LVD and increased LVM compared with controls. Increased LVD in those undergoing HD rather than PD, as well as the improvement in synchrony after HD, suggest that volume may modulate LVD. LVD was increased in children with LVH. LVD in children with ESRD may have pathogenic implications.
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Chang SA, Kim HK, Sohn DW. Impact of afterload on the assessment of severity of aortic stenosis. J Cardiovasc Ultrasound 2012; 20:79-84. [PMID: 22787524 PMCID: PMC3391632 DOI: 10.4250/jcu.2012.20.2.79] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 05/08/2012] [Accepted: 05/15/2012] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Aortic stenosis (AS) is increasingly diagnosed in current aging society. Echocardiography is the most important tool in the assessment of AS and its severity. However, load-dependency of Doppler measurement could affect the accuracy of AS severity assessment. We tried to evaluate the impact of afterload on the assessment of AS severity by modification of afterload using pneumatic compression (Pcom). METHODS Forty patients diagnosed as moderate or severe AS [effective orifice area of aortic valve (EOAAV) by continuity equation of < 1.5 cm2] were consecutively enrolled. Patients with severely uncontrolled hypertension, severe left ventricular (LV) dysfunction, and other significant valve disease were excluded. Comprehensive echocardiography was performed at baseline to assess AS severity. Then, pneumatic compression of the lower extremities by 100 mmHg was applied to increase LV afterload. After 3 minutes, echocardiography was repeated to assess AS severity. RESULTS Mean blood pressure was significantly increased under Pcom (p < 0.001), while heart rate remained unchanged. Peak aortic valve velocity (Vmax) was slightly, but significantly decreased under Pcom (p = 0.03). However, Doppler velocity index and EOAAV by continuity equation were not affected by Pcom. CONCLUSION AS severity assessment by echocardiography was not dependent on the change of LV afterload imposed by Pcom. AV Vmax was slightly decreased with LV afterload increment, but these changes were too small to alter treatment plan of AS patients. EOAAV and Doppler velocity index are more stable parameters for AS severity assessment.
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Affiliation(s)
- Sung-A Chang
- Division of Cardiology, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Circulation: Cardiovascular Imaging
Editors’ Picks. Circ Cardiovasc Imaging 2012; 5:e39-51. [DOI: 10.1161/circimaging.112.978148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The following articles are being highlighted as part of
Circulation: Cardiovascular Imaging
’s Topic Review. This series summarize the most important articles, as selected by the editors, that have been published in the
Circulation
portfolio. The studies included in this article represent the most significant research in clinical translation of novel imaging technologies.
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Kociol RD. Circulation: Heart Failure
Editors' Picks. Circ Heart Fail 2012. [DOI: 10.1161/circheartfailure.112.968487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The following are highlights from
Circulation: Heart Failure
Topic Review. This series will summarize the most important articles, as selected by the editors, that have published in the
Circulation
portfolio. The objective of this series is to provide our readership with a timely comprehensive selection of important papers that are relevant to the heart failure audience. The studies included in this article represent the most noteworthy research in the areas of heart failure and electrophysiology.
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Kim HK, Chang SA, Ahn HS, Shin DH, Kim JH, Lee SP, Kim YJ, Cho GY, Sohn DW, Oh BH, Park YB. Load independence of two-dimensional speckle-tracking-derived left ventricular twist and apex-to-base rotation delay in nonischemic dilated cardiomyopathy: implications for left ventricular dyssynchrony assessment. J Am Soc Echocardiogr 2012; 25:652-60. [PMID: 22465871 DOI: 10.1016/j.echo.2012.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2011] [Indexed: 01/13/2023]
Abstract
BACKGROUND Left ventricular (LV) twist mechanics are a promising, sensitive tool for assessing pathophysiologic changes in patients with systolic heart failure. Although LV twist is known to be load dependent in healthy volunteers, this has not been examined in patients with "long-standing" dilated cardiomyopathy (DCM). The aim of this study was to determine whether LV twist remains load dependent in the setting of long-standing, nonischemic DCM. METHODS Thirty-four patients with DCM with baseline LV ejection fractions (LVEFs) < 40% and 13 subjects with preserved LVEFs (≥50%) were enrolled. After baseline measurements, pneumatic compression of the lower extremities (Pcom) was used to increase LV afterload. Subsequently, sublingual nitroglycerin (SL-NG) was administered to modify preload. Conventional echocardiographic parameters, LV end-systolic wall stress, net LV twist angle, and apex-to-base-rotation delay (ABRD) were assessed under each condition. RESULTS In patients with DCM, although LV end-systolic wall stress significantly increased under Pcom (196.9 ± 64.9 g/m(2) at baseline vs 231.8 ± 78.9 g/m(2) under Pcom, P < .017) and decreased after SL-NG application (231.8 ± 78.9 g/m(2) under Pcom vs 197.4 ± 67.4 g/m(2) after SL-NG, P < .017), net LV twist angle and ABRD showed no significant changes depending on LV loading condition (for LV twist, 7.63 ± 4.47° at baseline vs 7.03 ± 4.13° under Pcom vs 7.35 ± 4.36° after SL-NG, P = 0.65; for ABRD, 16.56 ± 13.81% at baseline vs 17.19 ± 14.81% under Pcom vs 15.95 ± 13.27% after SL-NG, P = .53). Careful examination of individual patient data revealed that LV twist was load independent when patients had LV twist < 12°. ABRD was also found to be load independent, but only in patients with LVEFs < 34%. In contrast, LV twist and ABRD were load dependent in patients with preserved LVEFs. CONCLUSIONS LV twist and its component, ABRD, had relatively load insensitive properties in patients with long-standing DCM and can be used in future clinical trials as load-independent indexes of LV dyssynchrony.
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Affiliation(s)
- Hyung-Kwan Kim
- Division of Cardiology, Department of Internal Medicine, Cardiovascular Center, Seoul National University Hospital, Seoul, South Korea.
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Circulation: Cardiovascular Imaging
Editors' Picks. Circ Cardiovasc Imaging 2012. [DOI: 10.1161/circimaging.112.974097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Left ventricular dyssynchrony in pre-excitation syndrome: effect of accessory pathway location and reversibility after ablation therapy. Heart Vessels 2012; 28:199-207. [PMID: 22349776 DOI: 10.1007/s00380-012-0233-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 01/13/2012] [Indexed: 10/28/2022]
Abstract
We sought to evaluate the effects and reversibility of different locations of accessory pathways (AP) on left ventricular dyssynchrony (LVdys). The acute and chronic effects of AP were evaluated in a canine model (n = 11) and in patients with pre-excitation syndrome (n = 25). Pre-excitation was simulated in the canine model by applying VDD-type epicardial ventricular pacing near the atrioventricular (AV) groove with 50-ms AV interval after median thoracotomy, at five different sites in each animal. For the simulation of pre-excitation through the septal accessory pathway, right basal septal pacing was performed using a transvenous lead. Left ventricular dyssynchrony was measured by a two-dimensional speckle-tracking technique: before and during pacing in the canine model, and before and within 24 h after the ablation in patients with Wolff-Parkinson-White (WPW) syndrome. In the canine model, the most prominent intraventricular LVdys was observed in left lateral pre-excitation (P < 0.001). In patients with pre-excitation syndrome, LVdys was greatest in patients with left free wall accessory pathways before the ablation (P = 0.013). After catheter ablation, such a difference diminished (P = 0.619). The degree of LVdys was different according to the site of AP in both the acute model and chronic patients, and the most significant LVdys associated with pre-excitation was observed in left lateral AP. Left ventricular dyssynchrony was reversible in patients with WPW syndrome. Left ventricular dyssynchrony observed in patients with pre-excitation syndrome might be a different entity from that observed in patients with heart failure.
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Ventricular dyssynchrony of idiopathic versus pacing-induced left bundle branch block and its prognostic effect in patients with preserved left ventricular systolic function. Am J Cardiol 2012; 109:556-62. [PMID: 22133751 DOI: 10.1016/j.amjcard.2011.09.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2011] [Revised: 09/29/2011] [Accepted: 09/29/2011] [Indexed: 11/20/2022]
Abstract
The extent of left ventricular (LV) dyssynchrony might not be comparable between right ventricular pacing-induced left bundle branch block (RV-LBBB) and idiopathic LBBB (iLBBB), despite the morphologic analogy on the electrocardiogram. The objectives of the present study were to elucidate the differences in the LV dyssynchrony index (LVdys) between RV-LBBB and iLBBB, and to assess the prognostic implication of LV dyssynchrony. The conventional echocardiographic parameters, LVdys, and LV end-systolic wall stress were evaluated in 20 healthy volunteers and 21 patients with iLBBB and 20 with RV-LBBB with preserved LV systolic function. Three types of LVdys were evaluated: LVdys-6, LVdys-2, and LVdys-standard deviation. The patients were clinically followed up for about 3 years. The prevalence of LV dyssynchrony was not rare in those with either iLBBB or RV-LBBB, but it was more prevalent in the patients with iLBBB than in those with RV-LBBB. The patients with iLBBB had greater LVdys than those with RV-LBBB (84 ± 55 vs 55 ± 50 for LVdys-6, 51 ± 49 vs 31 ± 40 for LVdys-2, 37 ± 24 vs 24 ± 22 for LVdys-standard deviation in iLBBB vs RV-LBBB). LVdys displayed significant correlations with QRS duration, LV volumes, LV ejection fraction, LV end-systolic wall stress, and mitral inflow E/mitral annular E' velocity ratio. Multivariate logistic regression analysis showed that the LV end-diastolic volume and LV end-systolic wall stress were independent determinants of the presence of LV dyssynchrony. During follow-up, no cardiovascular death or hospitalization for heart failure was reported in either group. In conclusion, despite similarities in electrocardiographic morphology, the extent of LV dyssynchrony were greater in patients with iLBBB, with LV preload and afterload the main determinants. No association was found between the presence of LV dyssynchrony and prognosis.
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Kociol RD. Circulation: Heart Failure
Editors' Picks: Most Important Papers in Heart Failure and Imaging. Circ Heart Fail 2012. [DOI: 10.1161/circheartfailure.111.966176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The following are highlights from
Circulation: Heart Failure
Topic Review. This series will summarize the most important manuscripts, as selected by the editors, that have been published in the
Circulation
portfolio. The objective of this series is to provide our readership with a timely comprehensive selection of important papers that are relevant to the heart failure audience. The studies included in this article represent the most noteworthy research in the areas of heart failure and imaging.
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38
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Chung WJ. Is Dynamic Left Ventricular Dyssynchrony a Novel Surrogate Marker in the Patient with Hypertension? J Cardiovasc Ultrasound 2012; 20:172-3. [PMID: 23346285 PMCID: PMC3542509 DOI: 10.4250/jcu.2012.20.4.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 12/16/2012] [Accepted: 12/17/2012] [Indexed: 11/22/2022] Open
Affiliation(s)
- Wook-Jin Chung
- Cardiology Division, Heart Center, Gachon University Gil Hospital, Incheon, Korea
- Gachon Cardiovascular Research Institute, Gachon University Gil Hospital, Incheon, Korea
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Circulation: Cardiovascular Imaging
Editors' Picks. Circ Cardiovasc Imaging 2011. [DOI: 10.1161/circimaging.111.970319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The following articles are being highlighted as part of
Circulation: Cardiovascular Imaging
's Topic Review. This series summarizes the most important articles, as selected by the editors, that have published in the
Circulation
portfolio. The studies included in this article represent the most significant research in the area of myocardial disease.
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40
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Al-Jaroudi W, Iqbal F, Heo J, Iskandrian AE. Relation between heart rate and left ventricular mechanical dyssynchrony in patients with end-stage renal disease. Am J Cardiol 2011; 107:1235-40. [PMID: 21296324 DOI: 10.1016/j.amjcard.2010.12.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Revised: 12/15/2010] [Accepted: 12/15/2010] [Indexed: 11/28/2022]
Abstract
The effect of heart rate (HR) on left ventricular (LV) mechanical dyssynchrony has not been studied by phase analysis of myocardial perfusion imaging and has yielded conflicting results by echocardiography. We measured indexes of LV dyssynchrony by automated analysis of gated single-photon emission computed tomography in 140 patients with end-stage renal disease (ESRD) and 133 subjects with normal renal function (control group). Patients with abnormal perfusion pattern or QRS duration >120 ms were excluded. HR at time of acquisition of gated images was recorded. LV ejection fraction (EF), volumes, mass, and 2 indexes of dyssynchrony, phase SD and bandwidth, were derived. Almost 50% of patients in each group had an abnormal LVEF (<50%). HR at rest ranged from 48 to 113 beats/min (75 ± 13). Patients with abnormal LVEF had a higher phase SD (30 ± 13° vs 22 ± 11° and 28 ± 16° vs 15 ± 6° for the ESRD and control groups, respectively, p <0.001 each) and higher histographic bandwidth (88 ± 44° vs 62 ± 33° and 80 ± 49° vs 43 ± 14° for the ESRD and control groups, p <0.001 each). Patients with ESRD and normal LVEF had higher SD and bandwidth than the control group (22 ± 11° vs 15 ± 6° and 62 ± 33° vs 43 ± 14°, respectively, p <0.001 each). The control and ESRD groups were divided into tertiles based on HR. The phase SD and bandwidth were similar in the first (slowest HR) and third (highest HR) tertiles in every group (p = NS). There were no significant correlations between phase SD or bandwidth and HR in either group. In conclusion, within the HR range examined in this cross-sectional study, there was no relation between HR at rest and LV dyssynchrony.
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Affiliation(s)
- Wael Al-Jaroudi
- Division of Cardiovascular Medicine, Section of Cardiovascular Imaging, Cleveland Clinic, Cleveland, Ohio, USA.
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Synchronicity of LV Contraction as a Determinant of LV Twist Mechanics. JACC Cardiovasc Imaging 2011; 4:338-47. [DOI: 10.1016/j.jcmg.2010.11.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 11/04/2010] [Accepted: 11/22/2010] [Indexed: 11/18/2022]
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Murata T, Dohi K, Onishi K, Sugiura E, Fujimoto N, Ichikawa K, Ishikawa E, Nakamura M, Nomura S, Takeuchi H, Nobori T, Ito M. Role of haemodialytic therapy on left ventricular mechanical dyssynchrony in patients with end-stage renal disease quantified by speckle-tracking strain imaging. Nephrol Dial Transplant 2010; 26:1655-61. [PMID: 20864553 DOI: 10.1093/ndt/gfq590] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Tomohiro Murata
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
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