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Kocabaş U, Payzın S, Hasdemir C. Assessment of atrial functional remodeling in patients with atrioventricular nodal reentrant tachycardia with and without drug-induced type 1 Brugada pattern: A case-control study. JOURNAL OF CLINICAL ULTRASOUND : JCU 2021; 49:573-579. [PMID: 33599988 DOI: 10.1002/jcu.22990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/06/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
PURPOSE The time interval between the onset of the P-wave on electrocardiogram (ECG) and peak A' velocity of the lateral left atrial wall assessed by tissue Doppler imaging (PA-TDI interval) determine total atrial conduction time (TACT) which reflects atrial remodeling and arrhythmic substrate. In this retrospective study, we aimed to assess TACT in patients with atrioventricular nodal reentrant tachycardia (AVNRT) with and without drug-induced type 1 Brugada electrocardiogram ECG pattern (DI-Type 1 BrP) and control subjects. METHODS Study population consisted of 62 consecutive patients (46 women; mean age 44 ± 12 years) undergoing electrophysiological study and ablation for symptomatic, drug-resistant AVNRT, and 42 age-matched and sex-matched control subjects. All patients and control subjects underwent ajmaline challenge test and tissue Doppler imaging. RESULTS A DI-Type 1 BrP was uncovered in 24 of 62 patients with AVNRT (38.7%). PA-TDI interval was similar among AVNRT patients with and without DI-Type 1 BrP (124 ± 12 ms vs 119 ± 14 ms, respectively, P = .32), but significantly longer in patients with AVNRT with as well as without DI-Type 1 BrP than in control subjects (124 ± 12 ms and 119 ± 14 ms vs 105 ± 11 ms, respectively, P < .001). CONCLUSION The TACT assessed by PA-TDI interval is longer in patients with AVNRT with and without DI-Type 1 BrP than in age-matched and sex-matched healthy control subjects.
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Affiliation(s)
- Umut Kocabaş
- Department of Cardiology, Ege University School of Medicine, Izmir, Turkey
- Department of Cardiology, Başkent University Istanbul Hospital, Istanbul, Turkey
| | - Serdar Payzın
- Department of Cardiology, Ege University School of Medicine, Izmir, Turkey
| | - Can Hasdemir
- Department of Cardiology, Ege University School of Medicine, Izmir, Turkey
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Lebek S, Wester M, Pec J, Poschenrieder F, Tafelmeier M, Fisser C, Provaznik Z, Schopka S, Debl K, Schmid C, Buchner S, Maier LS, Arzt M, Wagner S. Abnormal P-wave terminal force in lead V 1 is a marker for atrial electrical dysfunction but not structural remodelling. ESC Heart Fail 2021; 8:4055-4066. [PMID: 34196135 PMCID: PMC8497361 DOI: 10.1002/ehf2.13488] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/19/2021] [Accepted: 06/07/2021] [Indexed: 11/12/2022] Open
Abstract
Aims There is a lack of diagnostic and therapeutic options for patients with atrial cardiomyopathy and paroxysmal atrial fibrillation. Interestingly, an abnormal P‐wave terminal force in electrocardiogram lead V1 (PTFV1) has been associated with atrial cardiomyopathy, but this association is poorly understood. We investigated PTFV1 as a marker for functional, electrical, and structural atrial remodelling. Methods and results Fifty‐six patients with acute myocardial infarction and 13 kidney donors as control cohort prospectively underwent cardiac magnetic resonance imaging to evaluate the association between PTFV1 and functional remodelling (atrial strain). To further investigate underlying pathomechanisms, right atrial appendage biopsies were collected from 32 patients undergoing elective coronary artery bypass grafting. PTFV1 was assessed as the product of negative P‐wave amplitude and duration in lead V1 and defined as abnormal if ≥4000 ms*μV. Activity of cardiac Ca/calmodulin‐dependent protein kinase II (CaMKII) was determined by a specific HDAC4 pull‐down assay as a surrogate for electrical remodelling. Atrial fibrosis was quantified using Masson's trichrome staining as a measure for structural remodelling. Multivariate regression analyses were performed to account for potential confounders. A total of 16/56 (29%) of patients with acute myocardial infarction, 3/13 (23%) of kidney donors, and 15/32 (47%) of patients undergoing coronary artery bypass grafting showed an abnormal PTFV1. In patients with acute myocardial infarction, left atrial (LA) strain was significantly reduced in the subgroup with an abnormal PTFV1 (LA reservoir strain: 32.28 ± 12.86% vs. 22.75 ± 13.94%, P = 0.018; LA conduit strain: 18.87 ± 10.34% vs. 10.17 ± 8.26%, P = 0.004). Abnormal PTFV1 showed a negative correlation with LA conduit strain independent from clinical covariates (coefficient B: −7.336, 95% confidence interval −13.577 to −1.095, P = 0.022). CaMKII activity was significantly increased from (normalized to CaMKII expression) 0.87 ± 0.17 to 1.46 ± 0.15 in patients with an abnormal PTFV1 (P = 0.047). This increase in patients with an abnormal PTFV1 was independent from clinical covariates (coefficient B: 0.542, 95% confidence interval 0.057 to 1.027, P = 0.031). Atrial fibrosis was significantly lower with 12.32 ± 1.63% in patients with an abnormal PTFV1 (vs. 20.50 ± 2.09%, P = 0.006), suggesting PTFV1 to be a marker for electrical but not structural remodelling. Conclusions Abnormal PTFV1 is an independent predictor for impaired atrial function and for electrical but not for structural remodelling. PTFV1 may be a promising tool to evaluate patients for atrial cardiomyopathy and for risk of atrial fibrillation.
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Affiliation(s)
- Simon Lebek
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
| | - Michael Wester
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
| | - Jan Pec
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
| | | | - Maria Tafelmeier
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
| | - Christoph Fisser
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
| | - Zdenek Provaznik
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Simon Schopka
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Kurt Debl
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
| | - Christof Schmid
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Stefan Buchner
- Department of Internal Medicine, Cham Hospital, Cham, Germany
| | - Lars S Maier
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
| | - Michael Arzt
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
| | - Stefan Wagner
- Department of Internal Medicine II, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany
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103
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Ünlü S, Yamak BA, Sezenöz B, Şahinarslan A, Arınsoy ST. Left atrial contractile longitudinal strain determines intrinsic left atrial function regardless of load status and left ventricular deformation. Int J Cardiovasc Imaging 2021; 37:3245-3253. [PMID: 34176030 DOI: 10.1007/s10554-021-02324-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 06/21/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE Left atrial (LA) longitudinal strain (S) has been proposed as a superior, non-invasive parameter over LA volumetric assessment. LAS has diagnostic and prognostic value in many cardiovascular pathologies. Nevertheless, the acute effect of hemodynamic changes on LAS indices is not well-established. We sought to identify volume independent physiomechanical changes in LA and interrelation between LA and left ventricular (LV) strain indices following a large amount of fluid loss provided by hemodialysis. METHODS Seventy-five patients between 18 and 85 years of age under hemodialysis therapy were included. The echocardiographic images were obtained before and after hemodialysis. Phasic LAS and LV global longitudinal strain (GLS) were calculated. The impact of volume depletion on echocardiographic measurements and their temporal correlation were calculated. RESULTS LV and LA dimensions,volumes and LV, LA reservoir, and conduit deformation showed a significant decrease after hemodialysis. No significant change was observed for LAScontraction (p = 0.203). The ultrafiltrated volume was significantly correlated with the changes in LVGLS (r = 0.75, p < 0.001), and LASreservoir (r = 0.81, p < 0.001) and LA total emptying volume (r = 0.80, p < 0.001). Absolute changes in LASreservoir and LVGLS were strongly correlated (r = 0.83, p < 0.001). There was no correlation between absolute changes in LAScontraction and LVGLS or ultrafiltrated volume (p = NS, both). CONCLUSION LA reservoir and conduit LS are highly volume dependent strain parameters and are strongly correlated with LV deformation along with ultrafiltrated volume. Acute excessive volume depletion or LV deformation have no influence on LAScontraction. It is important to identify independent easily accessible functional parameters for the LA which would improve clinical evaluation.
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Affiliation(s)
- Serkan Ünlü
- Department of Cardiology, Faculty of Medicine, Gazi University, Ankara, Turkey.
| | - Betül Ayça Yamak
- Department of Cardiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Burak Sezenöz
- Department of Cardiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Asife Şahinarslan
- Department of Cardiology, Faculty of Medicine, Gazi University, Ankara, Turkey
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104
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Singh N, Singh A, Besser SA, Lang RM, Mor-Avi V, Kosuri S, Bishop MR, DeCara JM. Echocardiographic predictors of new-onset atrial arrhythmias in patients undergoing hematopoietic stem cell transplantation. Int J Cardiol 2021; 339:225-231. [PMID: 34174337 DOI: 10.1016/j.ijcard.2021.06.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/08/2021] [Accepted: 06/18/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Atrial arrhythmias following hematopoietic stem cell transplantation (HSCT) have been associated with increased length of stay, need for intensive care, and increased mortality within one-year post-transplant. We sought to identify echocardiographic parameters that may predict the development of new atrial arrhythmias post-HSCT. METHODS We performed a retrospective chart review of 753 consecutive patients who underwent HSCT at the University of Chicago from January 2015 through December 2019. Patients with baseline echocardiogram within 6 months prior to transplantation were included. Those with prior transplants, history of atrial arrhythmias, or unavailable echocardiographic images were excluded, resulting in 187 patients included for final analysis. Baseline clinical and demographic variables, as well as echocardiographic parameters, were compared between patients who developed new atrial arrhythmias post-HSCT versus those who did not. RESULTS Of the 187 patients included for analysis, 25 (13%) developed new atrial arrhythmias, with 13 of these occurring within 30 days of transplantation. Despite no significant difference in left atrial (LA) end-systolic volume between those with and without new arrhythmia following HSCT (OR 1.04; 95% CI 0.91-1.09, p = 0.233), univariable analysis demonstrated that patients who developed atrial arrhythmias had reduced LA function, as reflected by lower LA emptying fraction (OR 0.94; 95% CI 0.91-0.98, p = 0.003) and lower LA reservoir strain (OR 0.95; 95% CI 0.92-0.99, p = 0.009). CONCLUSIONS Echocardiographic indices of LA function, namely LA emptying fraction and LA reservoir strain, can identify patients at risk for developing new atrial arrhythmias post-HSCT, prior to the development of morphologic changes in the LA.
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Affiliation(s)
- Nikhil Singh
- Section of Cardiology, Department of Medicine, UChicago Medicine, Chicago, IL 60636, USA
| | - Amita Singh
- Section of Cardiology, Department of Medicine, UChicago Medicine, Chicago, IL 60636, USA
| | - Stephanie A Besser
- Section of Cardiology, Department of Medicine, UChicago Medicine, Chicago, IL 60636, USA
| | - Roberto M Lang
- Section of Cardiology, Department of Medicine, UChicago Medicine, Chicago, IL 60636, USA
| | - Victor Mor-Avi
- Section of Cardiology, Department of Medicine, UChicago Medicine, Chicago, IL 60636, USA
| | - Satyajit Kosuri
- Section of Hematology/Oncology, Department of Medicine, UChicago Medicine, Chicago, IL 60637, USA
| | - Michael R Bishop
- Section of Hematology/Oncology, Department of Medicine, UChicago Medicine, Chicago, IL 60637, USA
| | - Jeanne M DeCara
- Section of Cardiology, Department of Medicine, UChicago Medicine, Chicago, IL 60636, USA.
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105
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Varadarajan V, Ambale-Venkatesh B, Hong SY, Habibi M, Ashikaga H, Wu CO, Chen LY, Heckbert SR, Bluemke DA, Lima JAC. Association of Longitudinal Changes in NT-proBNP With Changes in Left Atrial Volume and Function: MESA. Am J Hypertens 2021; 34:626-635. [PMID: 33491080 DOI: 10.1093/ajh/hpab018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/28/2020] [Accepted: 01/20/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND The mechanism of left atrial (LA) remodeling is poorly understood. The aim of this longitudinal study was to investigate whether changes in NT-proBNP levels relate to alterations of LA structure and function over time in a multiethnic population. METHODS From the prospective cohort study, the Multi-Ethnic Study of Atherosclerosis, our analysis included 1,838 participants who underwent cardiac magnetic resonance imaging at the baseline and 10-year examinations, had NT-proBNP levels available at both time points, and did not develop heart failure, myocardial infarction, and/or atrial fibrillation. Multivariable linear regression was used to analyze the association between NT-proBNP level (log-transformed) at the 2 time points and change in LA volumes, LA emptying fractions (total, active, and passive), and LA longitudinal strain. Log NT-proBNP was categorized into Low-Low (N = 681), Low-High (N = 238), High-Low (N = 237), and High-High (N = 682) based on the median value at both time points. RESULTS With the Low-Low group as the reference group, the High-High group experienced a greater increase in LA maximum and minimum indexed volumes: 3.1 ml/m2 (95% confidence interval 1.98, 4.20) and 2.7 ml/m2 (1.89, 3.51), respectively. The High-High group also experienced a greater decrease in LA total, passive, active emptying fraction, and longitudinal strain: -3.3% (-4.46, -2.11), -0.9% (-1.80, -0.02), -4.2% (-5.55, -2.76), and -2.3% (-3.80, -0.72), respectively. The Low-High group had similar associations, but the effect sizes were not as high. CONCLUSIONS Adverse LA remodeling over 10 years of follow-up strongly correlates with prolonged elevated levels of intracardiac stress, as assessed by NT-proBNP levels.
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Affiliation(s)
| | | | - Seo Young Hong
- Office of the Director, Center for Scientific Review, National Institutes of Health, Bethesda, Maryland, USA
| | - Mohammadali Habibi
- Department of Cardiology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Hiroshi Ashikaga
- Department of Cardiology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Colin O Wu
- Department of Medicine, National Heart, Lung and Blood Institute, Bethesda, Maryland, USA
| | - Lin Y Chen
- Cardiovascular Division, Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Susan R Heckbert
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - David A Bluemke
- Department of Radiology, University of Wisconsin, Madison, Wisconsin, USA
| | - Joao A C Lima
- Department of Cardiology, Johns Hopkins University, Baltimore, Maryland, USA
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Characteristics and prognosis of patients with cryptogenic stroke and suggestive of patent foramen ovale. Cardiovasc Ultrasound 2021; 19:20. [PMID: 34090472 PMCID: PMC8180014 DOI: 10.1186/s12947-021-00255-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 05/25/2021] [Indexed: 01/16/2023] Open
Abstract
AIMS The purpose of this study were to identify the usefulness of screening for PFO using agitated saline echocardiography (ASE) and characteristics and prognosis of patients with suggestive of patent foramen ovale (PFO). METHODS Three hundred three patients (mean age, 53 ± 9 years; 199 [66%] men) admitted with acute stroke or suspicion of stroke were included. Patients were classified into those with and without right-to-left shunt (RLS) according to the ASE results (positive ASE [n = 92] vs. negative ASE [n = 211]). Fifty-one out of ninety-two patients with positive ASE and twenty-one out of two hundred eleven patients with negative ASE underwent TEE with ASE to confirm PFO. RESULTS Ninety-two were positive for ASE and thirty-six of the fifty-one patients who underwent TEE were confirmed as having PFO. Of the patients with RLS grade 1, 50% were diagnosed with PFO and all patients with RLS grade ≥ 2 were diagnosed with PFO. All patients with negative ASE had no PFO (sensitivity of 100% and specificity of 58%). Patients with positive ASE were younger, had a lower body mass, and a lower prevalence of hypertension. The positive ASE patients had a higher mean S' velocity and better diastolic function. Four of ninety-one patients with positive ASE and thirteen of one hundred seventy-seven showed recurrence of stroke and suspicion of stroke. CONCLUSION Transthoracic ASE is a good method to screen for PFO. Patients with suggestive of PFO had lower risk factors, less atherosclerosis, and better cardiac performance.
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107
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Domogo AA, Ottesen JT. Patient-specific parameter estimation: Coupling a heart model and experimental data. J Theor Biol 2021; 526:110791. [PMID: 34087267 DOI: 10.1016/j.jtbi.2021.110791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 05/01/2021] [Accepted: 05/28/2021] [Indexed: 10/21/2022]
Abstract
This study develops a hemodynamic model involving the atrium, ventricle, veins, and arteries that can be calibrated to experimental results. It is a Windkessel model that incorporates an unsteady Bernoulli effect in the blood flow to the atrium. The model is represented by ordinary differential equations in terms of blood volumes in the compartments as state variables and it demonstrates the use of conductance instead of resistance to capture the effect of a non-leaking heart valve. The experimental results are blood volume data from 20 young (half of which are women) and 20 elderly (half of which are women) subjects during rest, inotropic stress (dobutamine), and chronotropic stress (glycopyrrolate). The model is calibrated to conform with data and physiological findings in 4 different levels. First, an optimization routine is devised to find model parameter values that give good fit between the model volume curves and blood volume data in the atrium and ventricle. Patient-specific information are used to get initial parameter values as a starting point of the optimization. Also, model pressure curves must show realistic behavior. Second, parametric bootstrapping is performed to establish the reliability of the optimal parameters. Third, statistical tests comparing mean optimal parameter values from young vs elderly subjects and women vs men are examined to support and present age and sex related differences in heart functions. Lastly, statistical tests comparing mean optimal parameter values from resting condition vs pharmacological stress are studied to verify and quantify the effects of dobutamine and glycopyrrolate to the cardiovascular system.
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Affiliation(s)
- Andrei A Domogo
- University of the Philippines Baguio, Baguio City, Philippines; Roskilde University, Roskilde, Denmark.
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108
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Ben-Arzi A, Hazanov E, Ghanim D, Rozen G, Marai I, Grosman-Rimon L, Kachel E, Amir O, Carasso S. Left atrial minimal volume: association with diastolic dysfunction and heart failure in patients in sinus rhythm or atrial fibrillation with preserved ejection fraction. BMC Med Imaging 2021; 21:76. [PMID: 33957873 PMCID: PMC8101036 DOI: 10.1186/s12880-021-00606-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 04/21/2021] [Indexed: 01/28/2023] Open
Abstract
Background Evidence of diastolic dysfunction (DD) required for the diagnosis of heart failure with preserved ejection fraction (HFpEF) is elusive in atrial fibrillation (AF). Left ventricular (LV) and left atrial (LA) speckle-tracking echocardiography (STE) may provide rhythm independent indications of DD. We aimed to find common LV/LA myocardial mechanics parameters to demonstrate DD, using STE in patients with AF. Methods 176 echocardiographic assessments of patients were studied retrospectively by STE. 109 patients with history of AF were divided in three groups: sinus with normal diastolic function (n = 32, ND), sinus with DD (n = 35, DD) and patients with AF during echocardiography (n = 42). These assessments were compared to 67 normal controls. Demographic, clinical, echocardiographic and myocardial mechanic characteristics were obtained. Results The patients with DD in sinus rhythm and patients with AF were similar in age, mostly women, and had cardiovascular risk factors as well as higher dyspnea prevalence compared to either controls or patients with ND. In the AF group, LV ejection fraction (LVEF) (p = 0.008), global longitudinal strain and LA emptying were lower (p < 0.001), whereas LA volumes were larger (p < 0.001) compared to the other groups. In a multivariable analysis of patients in sinus rhythm, LA minimal volume indexed to body surface area (Vmin-I) was found to be the single significant factor associated with DD (AUC 83%). In all study patients, Vmin-I correlated with dyspnea (AUC 80%) and pulmonary hypertension (AUC 90%). Conclusions Vmin-I may be used to identify DD and assist in the diagnosis of HFpEF in patients with AF.
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Affiliation(s)
- Assaf Ben-Arzi
- Cardiovascular Institute, Poriya Medical Center, Lower Galilee, Israel.,The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Zefat, Israel
| | - Evgeni Hazanov
- Cardiovascular Institute, Poriya Medical Center, Lower Galilee, Israel
| | - Diab Ghanim
- Cardiovascular Institute, Poriya Medical Center, Lower Galilee, Israel
| | - Guy Rozen
- Cardiovascular Institute, Poriya Medical Center, Lower Galilee, Israel.,The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Zefat, Israel
| | - Ibrahim Marai
- Cardiovascular Institute, Poriya Medical Center, Lower Galilee, Israel.,The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Zefat, Israel
| | | | - Erez Kachel
- Cardiovascular Institute, Poriya Medical Center, Lower Galilee, Israel.,The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Zefat, Israel.,Department of Cardiothoracic Surgery, Leviev Heart Center, Sheba Medical Center, Tel HaShomer, Israel
| | - Offer Amir
- Cardiovascular Institute, Poriya Medical Center, Lower Galilee, Israel.,The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Zefat, Israel.,Department of Cardiology, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Shemy Carasso
- Cardiovascular Institute, Poriya Medical Center, Lower Galilee, Israel. .,The Azrieli Faculty of Medicine in the Galilee, Bar-Ilan University, Zefat, Israel.
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109
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Wang X, Hong J, Zhang T, Xu D. Changes in left ventricular and atrial mechanics and function after dialysis in patients with end-stage renal disease. Quant Imaging Med Surg 2021; 11:1899-1908. [PMID: 33936973 DOI: 10.21037/qims-20-961] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Background Hemodialysis (HD) can influence end-stage renal disease (ESRD) patients' circulatory system. The present study aimed to evaluate the effect of volume depletion on left ventricular (LV) and left atrial (LA) function and determine the volume-independent parameters before and after HD in patients with ESRD. Methods Between January 2018 and January 2019, we recruited long-term HD patients (n=40, 51.0±16.4 years), excluding those with structural cardiac disease. Echocardiographic parameters, including LV and LA volumes, flow Doppler, pulsed tissue Doppler, and speckle tracking echocardiography (STE) before and after HD (within 24 h), were examined, and the values were compared. Results Following HD, alteration in LV end-systolic volume was not detected, whereas LV end-diastolic volume (90.18±23.91 vs. 84.21±23.54 mL, P=0.036) and LV ejection fraction (LVEF; 64.63%±6.56% vs. 62.84%±6.56%, P=0.049) decreased. Peak early diastolic trans-mitral flow velocity (E-wave; 82.22±20.13 vs. 72.43±18.32 cm/s, P<0.001), peak early diastolic tissue Doppler velocity (e'; 6.45±1.88 vs. 5.77±1.63 cm/s, P<0.001) at the septal side of the mitral annulus, the ratio of early to late Doppler velocities of diastolic mitral inflow (0.90±0.27 vs. 0.79±0.23, P<0.001), and the average E/e' ratio (12.54±4.08 vs. 11.28±4.52, P=0.049) decreased significantly. No significant difference was found in peak blood flow velocity at the mitral valve during late diastole and e' at the lateral side of the mitral annulus after HD. LA volume index (35.55±12.61 vs. 30.22±9.80 mL/m2, P<0.001), tricuspid regurgitation velocity (260.11±36.54 vs. 242.37±32.22 cm/s, P=0.002), and pulmonary artery systolic pressure (33.63±11.29 vs. 29.94±7.80 mmHg, P=0.006) significantly decreased. LV global longitudinal systolic strain (GLS) of 4-chamber view (-24.37%±3.02% vs. -23.38%±3.33%, P=0.019), rather than global circumferential systolic strain, exhibited significant change after HD. Significant changes were also found in LV longitudinal early diastolic strain rate (LSRe; 1.17±0.25 vs. 1.05±0.24 s-1, P<0.001) and early diastolic global radial velocity (Ve; 2.62±0.59 vs. 2.25±0.67 cm/s, P=0.011) after HD, but not in other strain rates and global radial velocity measurements. LA maximal volume (35.55±12.61 vs. 30.22±9.80 mL/m2, P<0.001), LA total emptying fraction (54.19%±10.39% vs. 49.63%±11.05%, P=0.009), and LA passive emptying fraction (32.23%±12.86% vs. 26.81%±9.28%, P=0.004) decreased significantly after HD, while LA minimal volume, the volume at the onset of atrial systole, and LA active emptying fraction after HD were not significantly different. Conclusions Most indices of systolic (LVEF and GLS of 4-chamber view) and early diastolic function (E-wave, e', LSRe, global radial Ve, and LA passive emptying fraction) were preload dependent. Late diastolic indices, including LV late diastolic global longitudinal strain rate, late diastolic global radial velocity, and LA active emptying fraction, did not change with volume depletion.
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Affiliation(s)
- Xiaoyan Wang
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jian Hong
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tao Zhang
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Di Xu
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Yang J, Liu Y, Feng L, Liu M, You L, Liu Y, Wu J, Zhang G, Geng X, Xie R. Effect of Left Atrial Appendage Closure in Combination With Catheter Ablation on Left Atrial Function for Persistent Atrial Fibrillation. Front Cardiovasc Med 2021; 8:666465. [PMID: 33996950 PMCID: PMC8119738 DOI: 10.3389/fcvm.2021.666465] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
Background: A single procedure combining left atrial appendage closure (LAAC) plus catheter ablation (CA) has been proven to be safe and feasible for treating atrial fibrillation (AF). However, the influence of treatment modality on left atrial (LA) function is not thoroughly explained. Objective: We aimed to investigate the changes of LA function in persistent AF patients undergoing concomitant LAAC and CA. Methods: The study population comprised 65 patients who underwent combined AF ablation and Watchman LAAC (combined therapy group) in our center, and 65 participants of the AF simple ablation group who were matched based on sex, age, CHA2DS2-VASc score and HAS-BLED score using propensity score matching. During the 1-year follow-up period, two-dimensional echocardiography and speckle tracking echocardiography were performed to assess LA reservoir, conduit, and contractile function. Results: The combined therapy was associated with a significant improvement in the LA reservoir function with increased expansion index and strain indices, including strain and strain rate (SR) during ventricular systole. Conduit function with SR during early ventricular diastole was also improved, as was contractile function with active atrial emptying fraction and SR during atrial systole. Similarly, LA reservoir and contractile function indices all improved continuously during follow-up after catheter ablation alone. At 3 months follow-up LA reservoir and conduit function with strain indices had a tendency to improve only in the simple procedure group. At 1-year follow-up there was no significant difference in either LA volumes or strain indices between the two groups. Conclusion: Both the combined therapy group and the simple ablation group demonstrated significant improvement in LA function. Based upon the fact that LA function was improved in both groups it might be concluded that most of the effects appeared to result from ablation, not LAAC; furthermore the additional LAAC procedure did not affect the improvement of LA function after CA.
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Affiliation(s)
- Jing Yang
- Division of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yue Liu
- Division of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Liang Feng
- Division of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Mingqing Liu
- Department of Medicine, Cangzhou Medical College, Cangzhou, China
| | - Ling You
- Division of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yu Liu
- Department of Cardiac Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jinglan Wu
- Division of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Guangming Zhang
- Division of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xue Geng
- Division of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ruiqin Xie
- Division of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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Zhang Y, Shui W, Tian Y, Zhang Z, Li J, Wang J. The impact of left ventricular geometry on left atrium phasic function in obstructive sleep apnea syndrome: a multimodal echocardiography investigation. BMC Cardiovasc Disord 2021; 21:209. [PMID: 33894755 PMCID: PMC8070276 DOI: 10.1186/s12872-021-02018-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 04/13/2021] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Left ventricular geometry and left atrium (LA) enlargement are risk factors for cardiovascular disease. However, reports on the relationship between left ventricular geometry and LA volume yielded contradictory findings, and LA phasic function remains unclear. Hence, this study aimed to investigate the influence of left ventricular geometry on LA volume and phasic function in patients with obstructive sleep apnea syndrome (OSAS) via a multimodal echocardiographic approach. METHODS In this cross-sectional study, 221 patients with OSAS (age 20-68 years, mean age 45.27 ± 12.50 years) underwent clinical evaluation, polysomnography, and multimodal echocardiographic examination with two-dimensional echocardiography (2DE), two-dimensional speckle-tracking echocardiography (2D-STE) and three-dimensional echocardiography (3DE). Based on conventional classification of left ventricular geometry, patients with OSAS were divided into four groups: normal geometry (NG), concentric remodeling (CR), concentric hypertrophy (CH), and eccentric hypertrophy (EH). RESULTS Based on 2DE and 3DE, the LA volumes and indices gradually increased from NG to CH. Additionally, 2DE and 3DE LA maximum volume index (LAVImax) were higher in patients with CH and EH than in patients with NG and CR (P < 0.05). The reservoir function, estimated by LA total emptying fraction (LA TotEF) was lower in patients with CH than in patients with NG in 2DE and 3DE (both, P < 0.05). Also, LA conduit function, evaluated by LA passive emptying fraction (LA PassEF) was lower in patients with CH than in patients with NG and CR, and in patients with EH than in those with NG in 2DE and 3DE (all, P < 0.05). The LA booster pump function, evaluated by LA active emptying fraction (LA ActEF) showed no statistically significant difference in 2DE; however, it was greater in patients with CH than in those with NG in 3DE. Similar results were obtained by 2D-STE, and CH was significantly associated with LA strain during systole (LAS-S, β = - 0.546, 95%CI: - 6.371-(- 3.444); P < 0.001), early diastole (LAS-E, β = - 0.636, 95%CI: - 9.532-(- 5.710); P < 0.001), and late diastole (LAS-A, β = - 0.450, 95%CI: 1.518-3.909; P < 0.001) in multiple linear regression. CONCLUSIONS The LA phasic function changed with left ventricular geometry via multimodal echocardiography. CH had the most notable negative effect on the maximum volume and phasic function of the LA.
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Affiliation(s)
- Yong Zhang
- Medical imaging department of Shanxi Medical University; Department of Ultrasound, First Hospital of Shanxi Medical University, 85 Jiefang Nan Road, Taiyuan, 030001, Shanxi, China
| | - Wen Shui
- Medical imaging department of Shanxi Medical University; Department of Ultrasound, First Hospital of Shanxi Medical University, 85 Jiefang Nan Road, Taiyuan, 030001, Shanxi, China
| | - Yun Tian
- Medical imaging department of Shanxi Medical University; Department of Ultrasound, First Hospital of Shanxi Medical University, 85 Jiefang Nan Road, Taiyuan, 030001, Shanxi, China
| | - Zhenxia Zhang
- Department of Respiratory, First Hospital of Shanxi Medical University, 85 Jiefang Nan Road, Taiyuan, 030001, Shanxi, China
| | - Juan Li
- Medical imaging department of Shanxi Medical University; Department of Ultrasound, First Hospital of Shanxi Medical University, 85 Jiefang Nan Road, Taiyuan, 030001, Shanxi, China
| | - Jian Wang
- Medical imaging department of Shanxi Medical University; Department of Ultrasound, First Hospital of Shanxi Medical University, 85 Jiefang Nan Road, Taiyuan, 030001, Shanxi, China.
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Peigh G, Shah SJ, Patel RB. Left Atrial Myopathy in Atrial Fibrillation and Heart Failure: Clinical Implications, Mechanisms, and Therapeutic Targets. Curr Heart Fail Rep 2021; 18:85-98. [PMID: 33864224 DOI: 10.1007/s11897-021-00510-5] [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] [Accepted: 03/22/2021] [Indexed: 12/26/2022]
Abstract
PURPOSE OF REVIEW This review discusses the mechanisms, clinical implications, and treatments of left atrial (LA) myopathy in comorbid atrial fibrillation (AF) and heart failure (HF) across the spectrum of ejection fraction. RECENT FINDINGS AF and HF are highly comorbid conditions. Left atrial (LA) myopathy, characterized by impairments in LA structure, function, or electrical conduction, plays a fundamental role in the development of both AF and HF with preserved ejection fraction (AF-HFpEF) along with AF and HF with reduced ejection fraction (AF-HFrEF). While the nature of LA myopathy in AF-HFpEF is unique from that of AF-HFrEF, LA myopathy also leads to progression of both of these conditions. There may be a vulnerable cohort of AF-HF patients who have a disproportionate degree of LA myopathy compared with left ventricular (LV) dysfunction. Further investigations are required to identify therapies to improve LA function in this cohort.
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Affiliation(s)
- Graham Peigh
- Division of Cardiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Sanjiv J Shah
- Division of Cardiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Ravi B Patel
- Division of Cardiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA. .,Division of Cardiology, Northwestern Memorial Hospital, 676 N St. Clair Suite 600, Chicago, IL, 60611, USA.
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Altmann S, Halfmann MC, Abidoye I, Yacoub B, Schmidt M, Wenzel P, Forman C, Schoepf UJ, Xiong F, Dueber C, Kreitner KF, Varga-Szemes A, Emrich T. Compressed sensing acceleration of cardiac cine imaging allows reliable and reproducible assessment of volumetric and functional parameters of the left and right atrium. Eur Radiol 2021; 31:7219-7230. [PMID: 33779815 PMCID: PMC8452582 DOI: 10.1007/s00330-021-07830-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 01/26/2021] [Accepted: 02/24/2021] [Indexed: 11/05/2022]
Abstract
Objectives To compare volumetric and functional parameters of the atria derived from highly accelerated compressed sensing (CS)–based cine sequences in comparison to conventional (Conv) cine imaging. Methods CS and Conv cine sequences were acquired in 101 subjects (82 healthy volunteers (HV) and 19 patients with heart failure with reduced ejection fraction (HFrEF)) using a 3T MR scanner in this single-center study. Time-volume analysis of the left (LA) and right atria (RA) were performed in both sequences to evaluate atrial volumes and function (total, passive, and active emptying fraction). Inter-sequence and inter- and intra-reader agreement were analyzed using correlation, intraclass correlation (ICC), and Bland-Altman analysis. Results CS-based cine imaging led to a 69% reduction of acquisition time. There was significant difference in atrial parameters between CS and Conv cine, e.g., LA minimal volume (LAVmin) (Conv 24.0 ml (16.7–32.7), CS 25.7 ml (19.2–35.2), p < 0.0001) or passive emptying fraction (PEF) (Conv 53.9% (46.7–58.4), CS 49.0% (42.0–54.1), p < 0.0001). However, there was high correlation between the techniques, yielding good to excellent ICC (0.76–0.99) and small mean of differences in Bland-Altman analysis (e.g. LAVmin − 2.0 ml, PEF 3.3%). Measurements showed high inter- (ICC > 0.958) and intra-rater (ICC > 0.934) agreement for both techniques. CS-based parameters (PEF AUC = 0.965, LAVmin AUC = 0.864) showed equivalent diagnostic ability compared to Conv cine imaging (PEF AUC = 0.989, LAVmin AUC = 0.859) to differentiate between HV and HFrEF. Conclusion Atrial volumetric and functional evaluation using CS cine imaging is feasible with relevant reduction of acquisition time, therefore strengthening the role of CS in clinical CMR for atrial imaging. Key Points • Reliable assessment of atrial volumes and function based on compressed sensing cine imaging is feasible. • Compressed sensing reduces scan time and has the potential to overcome obstacles of conventional cine imaging. • No significant differences for subjective image quality, inter- and intra-rater agreement, and ability to differentiate healthy volunteers and heart failure patients were detected between conventional and compressed sensing cine imaging. Supplementary Information The online version contains supplementary material available at 10.1007/s00330-021-07830-z.
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Affiliation(s)
- Sebastian Altmann
- Department of Diagnostic and Interventional Radiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Langenbeckstraße 1, 55131, Mainz, Germany
| | - Moritz C Halfmann
- Department of Diagnostic and Interventional Radiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Langenbeckstraße 1, 55131, Mainz, Germany
| | - Ibukun Abidoye
- Department of Diagnostic and Interventional Radiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.,Afe Babalola University/Multisystem Hospital, Km 8.5, Afe Babalola way, Ado-Ekiti, Ekiti, Nigeria
| | - Basel Yacoub
- Department of Radiology and Radiological Science, Medical University of South Carolina, 25 Courtenay Drive, Charleston, SC, 29425, USA
| | - Michaela Schmidt
- Cardiac MR R&D, Siemens Healthcare GmbH, Henkestraße, 127, 91052, Erlangen, Germany
| | - Philip Wenzel
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.,Center for Cardiology, Cardiology I, University Medical Center Mainz, Langenbeckstraße 1, 55131, Mainz, Germany
| | - Christoph Forman
- Cardiac MR R&D, Siemens Healthcare GmbH, Henkestraße, 127, 91052, Erlangen, Germany
| | - U Joseph Schoepf
- Department of Radiology and Radiological Science, Medical University of South Carolina, 25 Courtenay Drive, Charleston, SC, 29425, USA
| | - Fei Xiong
- Cardiac MR R&D, Siemens Healthcare GmbH, Henkestraße, 127, 91052, Erlangen, Germany
| | - Christoph Dueber
- Department of Diagnostic and Interventional Radiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany
| | - Karl-Friedrich Kreitner
- Department of Diagnostic and Interventional Radiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany
| | - Akos Varga-Szemes
- Department of Radiology and Radiological Science, Medical University of South Carolina, 25 Courtenay Drive, Charleston, SC, 29425, USA
| | - Tilman Emrich
- Department of Diagnostic and Interventional Radiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany. .,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Langenbeckstraße 1, 55131, Mainz, Germany. .,Department of Radiology and Radiological Science, Medical University of South Carolina, 25 Courtenay Drive, Charleston, SC, 29425, USA.
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Feng L, Gao H, Qi N, Danton M, Hill NA, Luo X. Fluid-structure interaction in a fully coupled three-dimensional mitral-atrium-pulmonary model. Biomech Model Mechanobiol 2021; 20:1267-1295. [PMID: 33770307 PMCID: PMC8298265 DOI: 10.1007/s10237-021-01444-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 03/01/2021] [Indexed: 12/17/2022]
Abstract
This paper aims to investigate detailed mechanical interactions between the pulmonary haemodynamics and left heart function in pathophysiological situations (e.g. atrial fibrillation and acute mitral regurgitation). This is achieved by developing a complex computational framework for a coupled pulmonary circulation, left atrium and mitral valve model. The left atrium and mitral valve are modelled with physiologically realistic three-dimensional geometries, fibre-reinforced hyperelastic materials and fluid–structure interaction, and the pulmonary vessels are modelled as one-dimensional network ended with structured trees, with specified vessel geometries and wall material properties. This new coupled model reveals some interesting results which could be of diagnostic values. For example, the wave propagation through the pulmonary vasculature can lead to different arrival times for the second systolic flow wave (S2 wave) among the pulmonary veins, forming vortex rings inside the left atrium. In the case of acute mitral regurgitation, the left atrium experiences an increased energy dissipation and pressure elevation. The pulmonary veins can experience increased wave intensities, reversal flow during systole and increased early-diastolic flow wave (D wave), which in turn causes an additional flow wave across the mitral valve (L wave), as well as a reversal flow at the left atrial appendage orifice. In the case of atrial fibrillation, we show that the loss of active contraction is associated with a slower flow inside the left atrial appendage and disappearances of the late-diastole atrial reversal wave (AR wave) and the first systolic wave (S1 wave) in pulmonary veins. The haemodynamic changes along the pulmonary vessel trees on different scales from microscopic vessels to the main pulmonary artery can all be captured in this model. The work promises a potential in quantifying disease progression and medical treatments of various pulmonary diseases such as the pulmonary hypertension due to a left heart dysfunction.
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Affiliation(s)
- Liuyang Feng
- School of Mathematics and Statistics, University of Glasgow, Glasgow, G12 8SQ, UK.
| | - Hao Gao
- School of Mathematics and Statistics, University of Glasgow, Glasgow, G12 8SQ, UK
| | - Nan Qi
- Institute of Marine Science and Technology, Shandong University, Shangdong, 266237, People's Republic of China
| | - Mark Danton
- Department of Cardiac Surgery, Royal Hospital for Children, Glasgow, UK
| | - Nicholas A Hill
- School of Mathematics and Statistics, University of Glasgow, Glasgow, G12 8SQ, UK
| | - Xiaoyu Luo
- School of Mathematics and Statistics, University of Glasgow, Glasgow, G12 8SQ, UK
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Weber J, Bond K, Flanagan J, Passick M, Petillo F, Pollack S, Robinson N, Petrossian G, Cao JJ, Barasch E. The Prognostic Value of Left Atrial Global Longitudinal Strain and Left Atrial Phasic Volumes in Patients Undergoing Transcatheter Valve Implantation for Severe Aortic Stenosis. Cardiology 2021; 146:489-500. [PMID: 33752215 DOI: 10.1159/000514665] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/24/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The changes and the prognostic implications of left atrial (LA) volumes (LAV), LA function, and vascular load in patients undergoing transcatheter aortic valve implantation (TAVI) for severe aortic stenosis (AS) are less known. METHODS We enrolled 150 symptomatic patients (mean age 82 ± 8 years, 58% female, and pre-TAVI aortic valve area 0.40 ± 0.19 cm/m2) with severe AS who underwent 2D transthoracic echocardiography and 2D speckle tracking echocardiography at average 21 ± 35 days before and 171 ± 217 days after TAVI. The end point was a composite of new onset of atrial fibrillation, hospitalization for heart failure and all-cause death (major adverse cardiac events [MACE]). RESULTS After TAVI, indexed maximal LA volume and minimum volume of the LA decreased by 2.1 ± 10 mL/m2 and 1.6 ± 7 mL/m2 (p = 0.032 and p = 0.011, respectively), LA function index increased by 6.8 ± 11 units (p < 0.001), and LA stiffness decreased by 0.38 ± 2.0 (p = 0.05). No other changes in the LA phasic volumes, emptying fractions, and vascular load were noted. Post-TAVI, both left atrial and ventricular global peak longitudinal strain improved by about 6% (p = 0.01 and 0.02, respectively). MACE was reached by 37 (25%) patients after a median follow-up period of 172 days (interquartile range, 20-727). In multivariable models, MACE was associated with both pre- and post-TAVI LA global peak longitudinal strain (hazard ratio [HR] 0.75, CI 0.59-0.97; and HR 0.77, CI 0.60-1.00, per 5 percentage point units, respectively), pre-TAVI LV global endocardial longitudinal strain (HR 1.37, CI 1.02-1.83 per 5 percentage point units), and with most of the LA phasic volumes. CONCLUSION Within 6 months after TAVI, there is reverse LA remodeling and an improvement in LA reservoir function. Pre- and post-TAVI indices of LA function and volume remain independently associated with MACE. Larger studies enrolling a greater diversity of patients may provide sufficient evidence for the utilization of these imaging biomarkers in clinical practice.
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Affiliation(s)
- Jonathan Weber
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA
| | - Kristine Bond
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA
| | - Joseph Flanagan
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA
| | - Michael Passick
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA
| | - Florentina Petillo
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA
| | - Simcha Pollack
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA
| | - Newell Robinson
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA
| | - George Petrossian
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA
| | - J Jane Cao
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA.,Health Sciences Center, Stony Brook University, Stony Brook, New York, USA
| | - Eddy Barasch
- Departments of Research and Cardiac Imaging, St. Francis Hospital, The Heart Center, Roslyn, New York, USA, .,Health Sciences Center, Stony Brook University, Stony Brook, New York, USA,
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Quah JX, Dharmaprani D, Tiver K, Lahiri A, Hecker T, Perry R, Selvanayagam JB, Joseph MX, McGavigan A, Ganesan A. Atrial fibrosis and substrate based characterization in atrial fibrillation: Time to move forwards. J Cardiovasc Electrophysiol 2021; 32:1147-1160. [PMID: 33682258 DOI: 10.1111/jce.14987] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/15/2021] [Accepted: 02/22/2021] [Indexed: 12/15/2022]
Abstract
Atrial fibrillation (AF) is the most commonly encountered cardiac arrhythmia in clinical practice. However, current therapeutic interventions for atrial fibrillation have limited clinical efficacy as a consequence of major knowledge gaps in the mechanisms sustaining atrial fibrillation. From a mechanistic perspective, there is increasing evidence that atrial fibrosis plays a central role in the maintenance and perpetuation of atrial fibrillation. Electrophysiologically, atrial fibrosis results in alterations in conduction velocity, cellular refractoriness, and produces conduction block promoting meandering, unstable wavelets and micro-reentrant circuits. Clinically, atrial fibrosis has also linked to poor clinical outcomes including AF-related thromboembolic complications and arrhythmia recurrences post catheter ablation. In this article, we review the pathophysiology behind the formation of fibrosis as AF progresses, the role of fibrosis in arrhythmogenesis, surrogate markers for detection of fibrosis using cardiac magnetic resonance imaging, echocardiography and electroanatomic mapping, along with their respective limitations. We then proceed to review the current evidence behind therapeutic interventions targeting atrial fibrosis, including drugs and substrate-based catheter ablation therapies followed by the potential future use of electro phenotyping for AF characterization to overcome the limitations of contemporary substrate-based methodologies.
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Affiliation(s)
- Jing X Quah
- College of Medicine and Public Health, Flinders University of South Australia, Adelaide, Australia.,Department of Cardiovascular Medicine, Flinders Medical Centre, Adelaide, Australia
| | - Dhani Dharmaprani
- College of Medicine and Public Health, Flinders University of South Australia, Adelaide, Australia.,College of Science and Engineering, Flinders University of South Australia, Adelaide, Australia
| | - Kathryn Tiver
- Department of Cardiovascular Medicine, Flinders Medical Centre, Adelaide, Australia
| | - Anandaroop Lahiri
- Department of Cardiovascular Medicine, Flinders Medical Centre, Adelaide, Australia
| | - Teresa Hecker
- Department of Cardiovascular Medicine, Flinders Medical Centre, Adelaide, Australia
| | - Rebecca Perry
- Department of Cardiovascular Medicine, Flinders Medical Centre, Adelaide, Australia.,UniSA Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | | | - Majo X Joseph
- Department of Cardiovascular Medicine, Flinders Medical Centre, Adelaide, Australia
| | | | - Anand Ganesan
- College of Medicine and Public Health, Flinders University of South Australia, Adelaide, Australia.,Department of Cardiovascular Medicine, Flinders Medical Centre, Adelaide, Australia
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Lange A, Huntress H, Steindl J, Palka P. Incremental role of CT coronary angiography in the assessment of left ventricular diastolic function. Open Heart 2021; 8:e001566. [PMID: 33741690 PMCID: PMC7986954 DOI: 10.1136/openhrt-2020-001566] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/24/2021] [Accepted: 02/24/2021] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE To determine whether Computed Tomography (CT) coronary angiography (CTCA) has clinical value for the assessment of left ventricular (LV) diastolic dysfunction (DD) beyond traditional information on coronary artery anatomy. METHOD In this retrospective study, a consecutive group of 72 patients (mean age 59±13 years)-who met the eligibility criteria of sinus rhythm, no significant valvular abnormalities, and who had transthoracic echocardiogram (TTE)-were analysed. The CTCA was prospectively triggered during diastole. Outcomes of interest were CTCA derived LV and left atrial (LA) volumes, diastolic expansion (DE) index: LV volume÷LA volume and DE fraction (DEF): [(LV volume-LA volume)÷LV volume]×100. TTE-LA volume was measured as maximum, minimum and pre-A. Studied patients were divided according to the current classification of LVDD as a reference standard. A small subgroup of nine patients underwent further invasive cardiac catheterisation. RESULTS CTCA-LV and LA volumes were larger compared with TTE, 37%±20% and 11%±21%, respectively. CTCA-LA volume correlated well with all TTE-LA volumes (maximum: R2=0.58; pre-A wave: R2=0.39; minimum: R2=0.26; p<0.0001) with the smallest differences in maximum LA volume (9±32 mL; mean±2 SD). The DE and DEF correlated with both LA function and LVDD. DE >1.65 and DE <1.40 have good specificity (85% and 88%, respectively), and positive predictive value to differentiate LVDD. DE and DEF were dependent on the patients' age but independent of other variables. CONCLUSIONS CTCA derived diastasis volume indices can provide additional quantifiable information on LVDD.
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Affiliation(s)
- Aleksandra Lange
- Queensland Cardiovascular Group, Wesley Medical Research Limited, St Andrew's War Memorial Hospital, Brisbane, Queensland, Australia
| | - Harry Huntress
- Queensland Cardiovascular Group, Wesley Medical Research Limited, St Andrew's War Memorial Hospital, Brisbane, Queensland, Australia
| | - Jesse Steindl
- Queensland Cardiovascular Group, Wesley Medical Research Limited, St Andrew's War Memorial Hospital, Brisbane, Queensland, Australia
| | - Przemyslaw Palka
- Queensland Cardiovascular Group, Wesley Medical Research Limited, St Andrew's War Memorial Hospital, Brisbane, Queensland, Australia
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Lee JM, Chung H, Kim HO, Woo JS, Kim SJ, Kim W, Kim WS, Kim JB. Ventricular late potentials measured by signal-averaged electrocardiogram in young professional soccer players. INTERNATIONAL JOURNAL OF ARRHYTHMIA 2021. [DOI: 10.1186/s42444-021-00031-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background and objectives
Athlete’s heart is characterized by structural cardiac changes, including enlargement and hypertrophy. However, exercise-induced cardiac electrical remodeling is not well known in Asian athletes. We sought to evaluate the association between vigorous exercise and the development of abnormal late potential on signal-averaged electrocardiogram (SAECG).
Method
We analyzed 48 Korean professional soccer players and 71 healthy sedentary controls who underwent SAECG and transthoracic echocardiography at Kyung Hee University Hospital. An SAECG was considered abnormal (positive for ventricular late potential) when any one of the three following criteria was met: filtered QRS duration > 114 ms, root-mean-square voltage in the terminal 40 ms < 20 uV, or a voltage < 40 uV for more than 38 ms.
Results
Fragmented QRS was more commonly found in athletes (1.4% vs. 10.4%). Athletes demonstrated significantly higher proportion of filtered QRS duration > 114 ms (7.0% vs. 22.9%, P = 0.013) and lower terminal QRS root-mean-square voltage < 20 uV (5.6% vs. 20.8%, P = 0.012). Ventricular late potential on SAECG was significantly more frequent in athletes (15.5% vs. 35.4%, P = 0.012). Regarding echocardiographic parameters, the athletes had larger cardiac chamber size; however, these differences became non-significant after adjustment for body surface area, except left ventricular mass index (65.7 ± 12.7 g/m2 vs. 84.7 ± 17.7 g/m2, P < 0.001).
Conclusion
Abnormal SAECG findings were significantly more common in athletes than in controls. Further study is needed to determine the clinical impact of these abnormal SAECGs in athletes and cardiac outcomes in the long term.
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Darweesh RM, Baghdady YK, El Hossary H, Khaled M. Importance of left atrial mechanical function as a predictor of atrial fibrillation risk following cardiac surgery. Int J Cardiovasc Imaging 2021; 37:1863-1872. [PMID: 33591474 DOI: 10.1007/s10554-021-02163-w] [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: 12/14/2020] [Accepted: 01/10/2021] [Indexed: 11/27/2022]
Abstract
Postoperative atrial fibrillation (POAF) after cardiac surgery is a major health problem that is associated with a significant financial burden and increased early morbidity and mortality. We investigated the accuracy of new echocardiographic derived indices to predict patients at higher risk of developing POAF. 84 consecutive patients (age 57.9 ± 6.9, 32% female) hospitalized for isolated CABG underwent comprehensive echocardiographic evaluation before surgery. Left atrial (LA) function was quantified through the assessment of phasic LA volumes to calculate LATEF. Speckle tracking echocardiography STE was used to measure LA reservoir strain, conduit strain and booster strain. Patients who developed POAF had increased LA volumes and impaired LA functions assessed by both the volumetric phasic changes and STE. By univariable analysis, all LA function parameters significantly predicted POAF. Multivariate regression analysis showed that age (P = 0.03, OR 1.134, 95% CI 1.012-1.271) and LATEF (P = 0.001, OR 0.814, 95% CI 0.725-0.914) were strong independent factors for POAF with LATEF showing the highest predictive accuracy. After multivariable adjustment to include LA strain indices to the base model, LA contractile strain LACtS (23.93 ± 4.19 vs 37.0 ± 3.35, p < 0.001) was the best discriminated for the highest predictive accuracy (OR 0.429, 95% CI 0.26-0.708). The ROC Curve was calculated for the greatest performance for prediction of POAF (AUC LACtS: 0.992; LATEF: 0.899). Adding new left atrial mechanics parameters is a more sensitive, independent tool that provides an incremental predictive value to discriminate patients at more risk for POAF.
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Alenezi F, Rajagopal S. The right atrium, more than a storehouse. Int J Cardiol 2021; 331:329-330. [PMID: 33548383 DOI: 10.1016/j.ijcard.2021.01.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 01/27/2021] [Indexed: 10/22/2022]
Affiliation(s)
- Fawaz Alenezi
- Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Sudarshan Rajagopal
- Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, NC, USA.
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Whitaker J, Karády J, Karim R, Tobon-Gomez C, Fastl T, Razeghi O, O'Neill L, Decroocq M, Williams S, Corrado C, Mukherjee RK, Sim I, O'Hare D, Kotadia I, Kolossváry M, Merkely B, Littvay L, Tarnoki AD, Tarnoki DL, Voros S, Razavi R, O'Neill M, Rajani R, Maurovich Horvat P, Niederer S. Standardised computed tomographic assessment of left atrial morphology and tissue thickness in humans. IJC HEART & VASCULATURE 2021; 32:100694. [PMID: 33392384 PMCID: PMC7772783 DOI: 10.1016/j.ijcha.2020.100694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 11/21/2020] [Accepted: 12/02/2020] [Indexed: 11/18/2022]
Abstract
AIMS Left atrial (LA) remodelling is a common feature of many cardiovascular pathologies and is a sensitive marker of adverse cardiovascular outcomes. The aim of this study was to establish normal ranges for LA parameters derived from coronary computed tomographic angiography (CCTA) imaging using a standardised image processing pipeline to establish normal ranges in a previously described cohort. METHODS CCTA imaging from 193 subjects recruited to the Budapest GLOBAL twin study was analysed. Indexed LA cavity volume (LACVi), LA surface area (LASAi), wall thickness and LA tissue volume (LATVi) were calculated. Wall thickness maps were combined into an atlas. Indexed LA parameters were compared with clinical variables to identify early markers of pathological remodelling. RESULTS LACVi is similar between sexes (31 ml/m2 v 30 ml/m2) and increased in hypertension (33 ml/m2 v 29 ml/m2, p = 0.009). LASAi is greater in females than males (47.8 ml/m2 v 45.8 ml/m2 male, p = 0.031). Median LAWT was 1.45 mm. LAWT was lowest at the inferior portion of the posterior LA wall (1.14 mm) and greatest in the septum (median = 2.0 mm) (p < 0.001). Conditions known to predispose to the development of AF were not associated with differences in tissue thickness. CONCLUSIONS The reported LACVi, LASAi, LATVi and tissue thickness derived from CCTA may serve as reference values for this age group and clinical characteristics for future studies. Increased LASAi in females in the absence of differences in LACVi or LATVi may indicate differential LA shape changes between the sexes. AF predisposing conditions, other than sex, were not associated with detectable changes in LAWT.Clinical trial registration:http://www.ClinicalTrials.gov/NCT01738828.
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Key Words
- AF, atrial fibrillation
- BSA, body surface area
- CCTA, cardiac computed tomography
- Computed tomography (CT)
- DZ, dizygotic
- LA, left atrium
- LAA, left atrial appendage
- LACV, left atrial cavity volume
- LASA, left atrial surface area
- LATV, left atrial tissue volume
- LAWT, left atrial wall thickness
- Left atrium
- MZ, monozygotic
- PV, pulmonary vein
- Tissue thickness
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Affiliation(s)
- John Whitaker
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Júlia Karády
- Cardiovascular Imaging Research Group, Semmelweis University, Budapest, Hungary
| | - Rashed Karim
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Catalina Tobon-Gomez
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Thomas Fastl
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Orod Razeghi
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Louisa O'Neill
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Marie Decroocq
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Steven Williams
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
- Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | - Cesare Corrado
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Rahul K. Mukherjee
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Iain Sim
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Daniel O'Hare
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Irum Kotadia
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Márton Kolossváry
- Cardiovascular Imaging Research Group, Semmelweis University, Budapest, Hungary
| | - Bela Merkely
- Cardiovascular Imaging Research Group, Semmelweis University, Budapest, Hungary
| | - Levente Littvay
- Cardiovascular Imaging Research Group, Semmelweis University, Budapest, Hungary
| | - Adam D. Tarnoki
- Department of Radiology, Semmelweis University, Budapest, Hungary
- Hungarian Twin Registry, Budapest, Hungary
| | - David L. Tarnoki
- Department of Radiology, Semmelweis University, Budapest, Hungary
- Hungarian Twin Registry, Budapest, Hungary
| | - Szilard Voros
- Cardiovascular Imaging Research Group, Semmelweis University, Budapest, Hungary
| | - Reza Razavi
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
| | - Mark O'Neill
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
- Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | - Ronak Rajani
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
- Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | | | - Steven Niederer
- School of Biomedical Engineering and Imaging Sciences, King’s College, London, UK
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Chung H, Kim Y, Park CH, Kim IS, Kim JY, Min PK, Yoon YW, Kim TH, Lee BK, Hong BK, Rim SJ, Kwon HM, Lee KA, Choi EY. Contribution of sarcomere gene mutations to left atrial function in patients with hypertrophic cardiomyopathy. Cardiovasc Ultrasound 2021; 19:4. [PMID: 33407484 PMCID: PMC7789152 DOI: 10.1186/s12947-020-00233-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/14/2020] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Left atrial (LA) enlargement and dysfunction are related to clinical course in patients with hypertrophic cardiomyopathy (HCM). We aimed to investigate genetic contribution to LA structural and functional remodeling. METHODS Two hundred twelve patients were consecutively enrolled, and echocardiography and extensive genetic analysis were performed. Cardiac magnetic resonance (CMR) was performed in 135 patients. Echocardiography was also performed in controls (n = 30). RESULTS Patients with HCM had lower late-diastolic mitral annular velocity (a') and higher LA volume index (LAVI) than controls. Patients with pathogenic or likely pathogenic sarcomere gene mutations (PSM, n = 67, 32%) had higher LAVI and lower CMR-derived LA total emptying fraction (37.0 ± 18.5 vs. 44.2 ± 12.4%, p = 0.025). In patients without AF (n = 187), the PSM had lower a' (6.9 ± 2.0 vs. 7.8 ± 1.9 cm/s, p = 0.004) than others. The PSM had higher prevalence and amount of late gadolinium enhancement (LGE) in the left ventricle (LV). In multivariate analysis, PSM was significantly related to lower a' independent of E/e', LV mass index, and LAVI. However, the relation significantly attenuated after adjustment for the extent of LGE in the LV, suggesting common myopathy in the LV and LA. In addition, PSM was significantly related to lower LA total emptying fraction independent of age, E/e', s', LV ejection fraction, LV myocardial global longitudinal strain and %LGE mass. CONCLUSIONS PSM was related to LA dysfunction independent of LV filling pressure and LAVI, suggesting its contribution to atrial myopathy in HCM.
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Affiliation(s)
- Hyemoon Chung
- Department of Internal Medicine, Division of Cardiology, Kyung Hee University School of Medicine, Seoul, South Korea
| | - Yoonjung Kim
- Department of Laboratory Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Chul Hwan Park
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - In-Soo Kim
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Jong-Youn Kim
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Pil-Ki Min
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Young Won Yoon
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Tae Hoon Kim
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Byoung Kwon Lee
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Bum-Kee Hong
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Se-Joong Rim
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Hyuck Moon Kwon
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea
| | - Kyung-A Lee
- Department of Laboratory Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea.
| | - Eui-Young Choi
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eonju-Ro, Gangnam-Gu, Seoul, 06273, Republic of Korea.
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123
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Atrial conduction time associated predictors of recurrent atrial fibrillation. Int J Cardiovasc Imaging 2021; 37:1267-1277. [PMID: 33389363 DOI: 10.1007/s10554-020-02113-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
Identifying patients at high risk of atrial fibrillation (AF) recurrence remains challenging. This study aimed to evaluate total atrial conduction time (TACT) and left atrial (LA) asynchrony as predictors of AF recurrence. Consecutive patients after the first AF episode, terminated either spontaneously or with cardioversion, underwent transthoracic echocardiography. TACT, estimated by the time delay between the onset of P-wave and the peak A'-wave on the Tissue Doppler Imaging (PA-TDI duration), atrial volumetric and functional parameters, and biatrial strain were assessed. We calculated mean PA-TDI-the average of PA-TDI measurements in all left atrial (LA) walls-and the difference between the longest and the shortest PA interval (DLS) and the standard deviation of 4 PA intervals (SD4) to assess the LA global remodeling and asynchrony, respectively. The primary endpoint was AF recurrence. Patients with recurrent AF had significantly prolonged PA-TDI intervals in each LA wall-and thus mean PA-TDI-than those without recurrence (mean PA-TDI: 157.4 ± 17.9 vs. 110.2 ± 7.7 ms, p < 0.001). At univariate analysis, LA maximum volume index, total LA emptying fraction, right atrial maximum volume index, PA-TDI, DLS, and SD4 were predictors of AF recurrence. At multivariable analysis, PA-TDI intervals in all LA walls remained strong predictors with mean PA-TDI (odds ratio 1.04; 95% confidence interval 1.03-1.06) having an optimal cutoff of 125.8 ms in receiver operator characteristics curve analysis providing 98% sensitivity and 100% specificity for AF recurrence (area under the curve = 0.989). PA-TDI was an independent predictor of AF recurrence and outperformed established echocardiographic parameters.
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124
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Barletta V, Mazzocchetti L, Parollo M, Spatafora D, Bongiorni M, Zucchelli G. Multimodality imaging for atrial fibrosis detection in the era of precision medicine. J Cardiovasc Echogr 2021; 31:189-197. [PMID: 35284213 PMCID: PMC8893107 DOI: 10.4103/jcecho.jcecho_61_21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 08/09/2021] [Indexed: 11/04/2022] Open
Abstract
In recent years, atrial fibrillation (AF) has increasingly become a focus of attention because it represents the most encountered arrhythmia in clinical practice and a major cause of morbidity and mortality. Issues underlying AF have long been debated; nevertheless, electrical, contractile, and structural remodeling is demonstrated to be the pivotal contributor to arrhythmic substrate. Fibrosis is a hallmark of arrhythmogenic structural remodeling, resulting from an accumulation of fibrillar collagen deposits, as a reparative process to replace degenerating myocardium with concomitant reactive fibrosis, which causes interstitial expansion. Although the precise role of fibrosis in AF initiation and maintenance remains to be fully elucidated, a better definition of its extent and distribution may assist in designing individually tailored ablation approaches and improving procedure outcomes by targeting the fibrotic substrates with an organized strategy employing imaging resources. A deep comprehension of the mechanisms underlying atrial fibrosis could be crucial to setting up improved strategies for preventing AF-promoting structural remodeling. Imaging modalities such as echocardiography, cardiac computed tomography, and cardiac magnetic resonance, combined sometimes with invasive electroanatomical mapping, could provide valuable information for the optimal patients’ management if their use is not limited to cardiac anatomy study but extended to characterize abnormal left atrial substrate. Although pulmonary vein isolation is usually efficacious in treating paroxysmal AF, it is not sufficient for many patients with nonparoxysmal arrhythmias, particularly those with longstanding persistent AF. Noninvasive imaging techniques play a pivotal role in the planning of arrhythmic substrates ablation and show a strong correlation with electro-anatomic mapping, whose novel multipolar mapping catheters allow nowadays a more precise comprehension of atrial substrate. This review aims to explore the impact of the various imaging modalities for the detection of atrial fibrosis and their role in the management of AF.
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125
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Yilmaz A, Kahraman F, Ergül E, Çetin M. Left atrial volume index to left ventricular ejection fraction ratio predicted major adverse cardiovascular event in ST-Elevated myocardial infarction patients during 8 years of follow-up. J Cardiovasc Echogr 2021; 31:227-233. [PMID: 35284216 PMCID: PMC8893117 DOI: 10.4103/jcecho.jcecho_38_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 07/26/2021] [Accepted: 08/07/2021] [Indexed: 11/04/2022] Open
Abstract
Objective: Methods: Results: Conclusion:
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126
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Wright SP, Dawkins TG, Eves ND, Shave R, Tedford RJ, Mak S. Hemodynamic function of the right ventricular-pulmonary vascular-left atrial unit: normal responses to exercise in healthy adults. Am J Physiol Heart Circ Physiol 2020; 320:H923-H941. [PMID: 33356960 DOI: 10.1152/ajpheart.00720.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
With each heartbeat, the right ventricle (RV) inputs blood into the pulmonary vascular (PV) compartment, which conducts blood through the lungs at low pressure and concurrently fills the left atrium (LA) for output to the systemic circulation. This overall hemodynamic function of the integrated RV-PV-LA unit is determined by complex interactions between the components that vary over the cardiac cycle but are often assessed in terms of mean pressure and flow. Exercise challenges these hemodynamic interactions as cardiac filling increases, stroke volume augments, and cycle length decreases, with PV pressures ultimately increasing in association with cardiac output. Recent cardiopulmonary exercise hemodynamic studies have enriched the available data from healthy adults, yielded insight into the underlying mechanisms that modify the PV pressure-flow relationship, and better delineated the normal limits of healthy responses to exercise. This review will examine hemodynamic function of the RV-PV-LA unit using the two-element Windkessel model for the pulmonary circulation. It will focus on acute PV and LA responses that accommodate increased RV output during exercise, including PV recruitment and distension and LA reservoir expansion, and the integrated mean pressure-flow response to exercise in healthy adults. Finally, it will consider how these responses may be impacted by age-related remodeling and modified by sex-related cardiopulmonary differences. Studying the determinants and recognizing the normal limits of PV pressure-flow relations during exercise will improve our understanding of cardiopulmonary mechanisms that facilitate or limit exercise.
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Affiliation(s)
- S P Wright
- Centre for Heart, Lung and Vascular Health, University of British Columbia-Okanagan, Kelowna, British Columbia, Canada
| | - T G Dawkins
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, Wales, United Kingdom
| | - N D Eves
- Centre for Heart, Lung and Vascular Health, University of British Columbia-Okanagan, Kelowna, British Columbia, Canada
| | - R Shave
- Centre for Heart, Lung and Vascular Health, University of British Columbia-Okanagan, Kelowna, British Columbia, Canada
| | - R J Tedford
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - S Mak
- Division of Cardiology, Department of Medicine, Sinai Health, Toronto, Ontario, Canada.,Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
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127
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Bhatt A, Flink L, Lu DY, Fang Q, Bibby D, Schiller NB. Exercise physiology of the left atrium: quantity and timing of contribution to cardiac output. Am J Physiol Heart Circ Physiol 2020; 320:H575-H583. [PMID: 33275524 DOI: 10.1152/ajpheart.00402.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Although the phases of left atrial (LA) function at rest have been studied, the physiological response of the LA to exercise is undefined. This study defines the exercise behavior of the normal left atrium by quantitating its volumetric response to graded effort. Healthy subjects (n = 131) were enrolled from the Health eHeart cohort. Echocardiograms were obtained at baseline and during ramped supine bicycle exercise. Left ventricular volume index, stroke volume index (LVSVI), left atrial end-systolic volume index (LAESVI), left atrial end-diastolic volume index (LAEDVI), and left atrial emptying fraction (LAEF), reservoir fraction, and conduit fraction were analyzed. The LVSVI increased with low exercise but did not increase further with peak exercise; cardiac output increased through the agency of heart rate. The LAESVI and LAEDVI decreased and the LAEF increased with exercise. As a result, the LA reservoir volume index was static throughout exercise. The reservoir fraction decreased from 46% at rest to 40% with low exercise (P < 0.001) in association with increased LVSVI and remained similar at peak exercise. The conduit volume index increased from 20 mL/m2 at rest to 24 mL/m2 at low exercise and stayed the same at peak exercise. Similarly, the conduit fraction increased from 54% at rest to 60% at low exercise (P < 0.001) and did not change further with peak exercise. Although atrial function increased with exercise, the major contribution to the augmentation of LV stroke volume is LA conduit fraction, a marker of active ventricular relaxation. Furthermore, the major determinant of raising cardiac output during high-level exercise is heart rate.NEW & NOTEWORTHY Diseases of the left atrium (LA) are major sources of disability (e.g., strokes and fatigue), but its exercise physiology has been unstudied. Such knowledge may allow early recognition of disease and suggest therapies. We show that in normal subjects, low-level exercise decreases LA volume and increases its ejection fraction. However, these changes offset each other volumetrically, and the contribution to LV filling from a full to an empty LA (reservoir function) is static. Higher levels of exercise do not change LA reservoir contribution. Blood flowing directly from the pulmonary vein to LV (conduit flow) impelled by augmented LV active relaxation (suction) is the major source of a modest increase in LV stroke volume. The major source of increased cardiac output with exercise is heart rate. During all stages of exercise, the LA works hard but only to keep up. We believe that our findings provide an additional set of benchmarks through which to quantitate LA pathology and gauge its progression.
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Affiliation(s)
- Anish Bhatt
- Division of Cardiology, University of California, San Francisco, California.,Health eHeart Study and Research Cardiac Physiology Laboratory, University of California, San Francisco, California.,Cardiovascular Division, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Laura Flink
- Division of Cardiology, University of California, San Francisco, California.,Health eHeart Study and Research Cardiac Physiology Laboratory, University of California, San Francisco, California.,Kaiser Permanente San Leandro Medical Center, San Leandro, California
| | - Dai-Yin Lu
- Division of Cardiology, University of California, San Francisco, California.,Health eHeart Study and Research Cardiac Physiology Laboratory, University of California, San Francisco, California
| | - Qizhi Fang
- Division of Cardiology, University of California, San Francisco, California.,Health eHeart Study and Research Cardiac Physiology Laboratory, University of California, San Francisco, California
| | - Dwight Bibby
- Division of Cardiology, University of California, San Francisco, California.,Health eHeart Study and Research Cardiac Physiology Laboratory, University of California, San Francisco, California
| | - Nelson B Schiller
- Division of Cardiology, University of California, San Francisco, California.,Health eHeart Study and Research Cardiac Physiology Laboratory, University of California, San Francisco, California
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Kochie SL, Schober KE, Rhinehart J, Winter RL, Bonagura JD, Showers A, Yildez V. Effects of pimobendan on left atrial transport function in cats. J Vet Intern Med 2020; 35:10-21. [PMID: 33241877 PMCID: PMC7848333 DOI: 10.1111/jvim.15976] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Arterial thromboembolism is a sequela of hypertrophic cardiomyopathy (HCM) in cats related to left atrial (LA) enlargement and dysfunction. HYPOTHESIS Pimobendan improves LA transport function in cats. ANIMALS Twenty-two client-owned cats with HCM and 11 healthy cats. METHODS Prospective, double-blind, randomized, placebo-controlled clinical cohort study. Cats were randomized to receive either pimobendan (0.25 mg/kg PO q12h) or placebo for 4 to 7 days. Nineteen echocardiographic variables of LA size and function were evaluated. Statistical comparisons included t tests, analysis of variance, and multivariable analyses. RESULTS Peak velocity of left auricular appendage flow (LAapp peak; mean ± SD, 0.85 ± 0.20 vs 0.71 ± 0.22 m/s; P = .01), maximum LA volume (P = .03), LA total emptying volume (P = .03), peak velocity of late diastolic transmitral flow (A peak velocity; 0.77 ± 0.12 vs 0.62 ± 0.17 m/s; P = .05), and A velocity time integral (A VTI; 3.05 ± 0.69 vs 3.37 ± 0.49; P = .05) were increased after pimobendan. Mean change after pimobendan was larger in cats with HCM compared to healthy cats for LA fractional shortening (2.1% vs -2.1%; P = .05), A VTI (0.58 vs 0.01 cm; P = .01), LAapp peak (0.20 vs 0.02 m/s; P = .02), LA kinetic energy (3.51 vs -0.10 kdynes-cm; P = .05), and LA ejection force (1.93 vs -0.07 kdynes; P = .01) in the multivariable model. The stronger effect of pimobendan in cats with HCM was independent of LA size. CONCLUSIONS AND CLINICAL IMPORTANCE We identified positive, albeit minor, effects of pimobendan on LA function in cats with HCM. Whether or not treatment with pimobendan decreases the risk of cardiogenic embolism deserves further study.
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Affiliation(s)
- Samantha L Kochie
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Karsten E Schober
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Jaylyn Rhinehart
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Randolph L Winter
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - John D Bonagura
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Annie Showers
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Vedat Yildez
- Center for Biostatistics, The Ohio State University, Columbus, Ohio, USA
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Samaan AA, Hassan A, Hassan M, Said K, El Aroussy W, Fawzy ME, Yacoub M. Left atrial structural and functional remodeling following balloon mitral valvuloplasty. Int J Cardiovasc Imaging 2020; 37:999-1007. [PMID: 33211239 DOI: 10.1007/s10554-020-02084-0] [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: 07/07/2020] [Accepted: 10/21/2020] [Indexed: 11/28/2022]
Abstract
Mitral stenosis (MS) is associated with left atrial (LA) functional and morphological changes as a result of chronic increase in LA pressure. Relieving the mitral obstruction via balloon mitral valvuloplasty (BMV) might be associated with LA structural and functional remodeling. To study alterations of LA volume and functions 1 year following successful BMV in patients with isolated rheumatic severe mitral stenosis. Thirty patients (median age 33 years, 22 women) with severe rheumatic MS were included in the study. Using biplane method, trans-thoracic 2D echocardiography was used to estimate LA volume indexed to body surface area (BSA). Maximal, minimal and pre-A left atrial volumes were measured and indexed to BSA. LA volumetric functions were then assessed and the measurements were repeated 6 months and 1 year after successful valvuloplasty. At baseline, median mitral valve area (MVA) was 0.9 (0.6-1.3) cm2 measured by planimetry with a mean pressure gradient of 12.5 (8-24) mmHg. Following BMV, a significant regression of left atrial volume index was noticed at 6 months compared to baseline (51 vs. 60 ml/m2, p = 0.001) with a further decrease at 1 year (48 vs. 51 ml/m2, p = 0.03). At 6 months, volumetric assessment of left atrial functions showed a significant improvement in LA total emptying fraction (42% vs 30%, p = 0.001) as well as in LA passive emptying fraction (26% vs 14%, p = 0.033) and LA active emptying fraction (20% vs. 18%, p = 0.016). All these indices showed further improvement at 1 year [47% (P = 0.02), 29% (p = 0.03) and 31% (p = 0.001) respectively]. In patients with isolated rheumatic MS, mitral valvuloplasty was associated with a significant decline of LA volume accompanied by a significant improvement of its volumetric functions.
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Affiliation(s)
- Amir Anwar Samaan
- Department of Cardiovascular Medicine, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt. .,Department of Cardiology, Aswan Heart Centre, Aswan, Egypt.
| | - Ahmed Hassan
- Department of Cardiovascular Medicine, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt.,Department of Cardiology, Aswan Heart Centre, Aswan, Egypt
| | - Mohamed Hassan
- Department of Cardiovascular Medicine, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt.,Department of Cardiology, Aswan Heart Centre, Aswan, Egypt
| | - Karim Said
- Department of Cardiovascular Medicine, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Wafaa El Aroussy
- Department of Cardiovascular Medicine, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Mohamed Eid Fawzy
- Department of Cardiovascular Medicine, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Magdi Yacoub
- Department of Cardiothoracic Surgery, Aswan Heart Centre, Aswan, Egypt.,Department of Cardiothoracic Surgery, Imperial College London, London, UK
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130
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Cameli M, Miglioranza MH, Magne J, Mandoli GE, Benfari G, Ancona R, Sibilio G, Reskovic Luksic V, Dejan D, Griseli L, Van De Heyning CM, Mortelmans P, Michalski B, Kupczynska K, Di Giannuario G, Devito F, Dulgheru R, Ilardi F, Salustri A, Abushahba G, Morrone D, Fabiani I, Penicka M, Katbeh A, Sammarco G, Esposito R, Santoro C, Pastore MC, Comenale Pinto S, Kalinin A, Pičkure Ž, Ažman Juvan K, Zupan Mežnar A, Coisne A, Coppin A, Opris MM, Nistor DO, Paakkanen R, Biering-Sørensen T, Olsen FJ, Lapinskas T, Vaškelyté JJ, Galian-Gay L, Casas G, Motoc AI, Papadopoulos CH, Loizos S, Ágoston G, Szabó I, Hristova K, Tsonev SN, Galli E, Vinereanu D, Mihaila Baldea S, Muraru D, Mondillo S, Donal E, Galderisi M, Cosyns B, Edvardsen T, Popescu BA. Multicentric Atrial Strain COmparison between Two Different Modalities: MASCOT HIT Study. Diagnostics (Basel) 2020; 10:diagnostics10110946. [PMID: 33202837 PMCID: PMC7696899 DOI: 10.3390/diagnostics10110946] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/07/2020] [Accepted: 11/10/2020] [Indexed: 12/18/2022] Open
Abstract
Two methods are currently available for left atrial (LA) strain measurement by speckle tracking echocardiography, with two different reference timings for starting the analysis: QRS (QRS-LASr) and P wave (P-LASr). The aim of MASCOT HIT study was to define which of the two was more reproducible, more feasible, and less time consuming. In 26 expert centers, LA strain was analyzed by two different echocardiographers (young vs senior) in a blinded fashion. The study population included: healthy subjects, patients with arterial hypertension or aortic stenosis (LA pressure overload, group 2) and patients with mitral regurgitation or heart failure (LA volume–pressure overload, group 3). Difference between the inter-correlation coefficient (ICC) by the two echocardiographers using the two techniques, feasibility and analysis time of both methods were analyzed. A total of 938 subjects were included: 309 controls, 333 patients in group 2, and 296 patients in group 3. The ICC was comparable between QRS-LASr (0.93) and P-LASr (0.90). The young echocardiographers calculated QRS-LASr in 90% of cases, the expert ones in 95%. The feasibility of P-LASr was 85% by young echocardiographers and 88% by senior ones. QRS-LASr young median time was 110 s (interquartile range, IR, 78-149) vs senior 110 s (IR 78-155); for P-LASr, 120 s (IR 80-165) and 120 s (IR 90-161), respectively. LA strain was feasible in the majority of patients with similar reproducibility for both methods. QRS complex guaranteed a slightly higher feasibility and a lower time wasting compared to the use of P wave as the reference.
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Affiliation(s)
- Matteo Cameli
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, 53100 Siena, Italy; (G.E.M.); (M.C.P.); (S.M.)
- Correspondence: ; Tel.: +39-0577585377
| | - Marcelo Haertel Miglioranza
- Institute of Cardiology, University Foundation of Cardiology, Porto Alegre 90620-000, Brazil; (M.H.M.); (L.G.)
| | - Julien Magne
- CHU Limoges, Hôpital Dupuytren, Service Cardiologie, F-87042, 87042 Limoges, France;
- Cardiology Department, INSERM U1094, Faculté de médecine de Limoges, 2, rue Marcland, 87000 Limoges, France
| | - Giulia Elena Mandoli
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, 53100 Siena, Italy; (G.E.M.); (M.C.P.); (S.M.)
| | - Giovanni Benfari
- Section of Cardiology, Department of Medicine, University of Verona, 37126 Verona, Italy;
| | - Roberta Ancona
- UOC Cardiologia/UTIC—“Santa Maria delle Grazie” Hospital Pozzuoli, 80078 Pozzuoli, Italy; (R.A.); @gmail.it (G.S.); (S.C.P.)
| | - Gerolamo Sibilio
- UOC Cardiologia/UTIC—“Santa Maria delle Grazie” Hospital Pozzuoli, 80078 Pozzuoli, Italy; (R.A.); @gmail.it (G.S.); (S.C.P.)
| | - Vlatka Reskovic Luksic
- Department of Cardiovascular Diseases, University Hospital Centre Zagreb, 10000 Zagreb, Croatia; (V.R.L.); (D.D.)
| | - Dosen Dejan
- Department of Cardiovascular Diseases, University Hospital Centre Zagreb, 10000 Zagreb, Croatia; (V.R.L.); (D.D.)
| | - Leonardo Griseli
- Institute of Cardiology, University Foundation of Cardiology, Porto Alegre 90620-000, Brazil; (M.H.M.); (L.G.)
| | | | - Philippe Mortelmans
- Department of Cardiology, Antwerp University Hospital, 2650 Edegem, Belgium; (C.M.V.D.H.); (P.M.)
| | - Blazej Michalski
- Department of Cardiology, Medical University of Lodz, 91347 Lodz, Poland; (B.M.); (K.K.)
| | - Karolina Kupczynska
- Department of Cardiology, Medical University of Lodz, 91347 Lodz, Poland; (B.M.); (K.K.)
| | | | | | - Raluca Dulgheru
- Cardiology Department—Heart Valve Clinic—University Hospital Liege, B-4000 Liege, Belgium; (R.D.); (F.I.)
| | - Federica Ilardi
- Cardiology Department—Heart Valve Clinic—University Hospital Liege, B-4000 Liege, Belgium; (R.D.); (F.I.)
- Department of Advanced Biomedical Sciences, Federico II, University Hospital, 80131 Naples, Italy; (R.E.); (C.S.); (M.G.)
| | - Alessandro Salustri
- Non-Invasive Department, Heart Hospital—Hamad Medical Corporation, Doha 3050, Qatar; (A.S.); (G.A.)
| | - Galal Abushahba
- Non-Invasive Department, Heart Hospital—Hamad Medical Corporation, Doha 3050, Qatar; (A.S.); (G.A.)
| | - Doralisa Morrone
- Cardiothoracic and Vascular Department, Pisa University, 56126 Pisa, Italy; (D.M.); (I.F.)
| | - Iacopo Fabiani
- Cardiothoracic and Vascular Department, Pisa University, 56126 Pisa, Italy; (D.M.); (I.F.)
- Cardiologia e Medicina Cardiovascolare—Fondazione Toscana Gabriele Monasterio, 56124 Pisa, Italy
| | - Martin Penicka
- Cardiovascular Research Center Aalst, OLV Clinic, 9300 Aalst, Belgium; (M.P.); (A.K.)
| | - Asim Katbeh
- Cardiovascular Research Center Aalst, OLV Clinic, 9300 Aalst, Belgium; (M.P.); (A.K.)
| | - Giuseppe Sammarco
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, 35122 Padua, Italy; (G.S.); (D.M.)
| | - Roberta Esposito
- Department of Advanced Biomedical Sciences, Federico II, University Hospital, 80131 Naples, Italy; (R.E.); (C.S.); (M.G.)
| | - Ciro Santoro
- Department of Advanced Biomedical Sciences, Federico II, University Hospital, 80131 Naples, Italy; (R.E.); (C.S.); (M.G.)
| | - Maria Concetta Pastore
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, 53100 Siena, Italy; (G.E.M.); (M.C.P.); (S.M.)
| | - Salvatore Comenale Pinto
- UOC Cardiologia/UTIC—“Santa Maria delle Grazie” Hospital Pozzuoli, 80078 Pozzuoli, Italy; (R.A.); @gmail.it (G.S.); (S.C.P.)
| | - Artem Kalinin
- Department “Gailezers”, Riga East Clinical University Hospital, LV-1038 Riga, Latvia; (A.K.); (Z.P.)
| | - Žanna Pičkure
- Department “Gailezers”, Riga East Clinical University Hospital, LV-1038 Riga, Latvia; (A.K.); (Z.P.)
| | - Katja Ažman Juvan
- Department of Cardiovascular Surgery, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia;
| | - Anja Zupan Mežnar
- Cardiology Department, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia;
| | - Augustine Coisne
- Department of Clinical Physiology and Echocardiography—Heart Valve Clinic, Lille University Hospital, 59800 Lille, France; (A.C.); (A.C.)
| | - Amandine Coppin
- Department of Clinical Physiology and Echocardiography—Heart Valve Clinic, Lille University Hospital, 59800 Lille, France; (A.C.); (A.C.)
| | - Mihaela Maria Opris
- Institute for Emergency Cardiovascular Diseases and Transplant of Targu Mures, 540136 Targu Mures, Romania; (M.M.O.); (D.O.N.)
| | - Dan Octavian Nistor
- Institute for Emergency Cardiovascular Diseases and Transplant of Targu Mures, 540136 Targu Mures, Romania; (M.M.O.); (D.O.N.)
| | - Riitta Paakkanen
- Heart and Lung Center, Helsinki University Hospital and Helsinki University, 00100 Helsinki, Finland;
| | - Tor Biering-Sørensen
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Copenhagen, Denmark; (T.B.-S.); (F.J.O.)
| | - Flemming Javier Olsen
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Copenhagen, Denmark; (T.B.-S.); (F.J.O.)
| | - Tomas Lapinskas
- Department of Cardiology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (T.L.); (J.J.V.)
| | - Jolanta Justina Vaškelyté
- Department of Cardiology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (T.L.); (J.J.V.)
| | - Laura Galian-Gay
- Department of Cardiology, Hospital Universitari Vall d’Hebron, 08035 Barcelona, Spain; (L.G.-G.); (G.C.)
| | - Guillem Casas
- Department of Cardiology, Hospital Universitari Vall d’Hebron, 08035 Barcelona, Spain; (L.G.-G.); (G.C.)
| | - Andreea Iulia Motoc
- Centre for Cardiovascular Diseases, University Hospital of Brussels, B-1090 Brussels, Belgium; (A.I.M.); (B.C.)
| | | | - Savvas Loizos
- Korgialenio Benakio—Red Cross Hospital, 115 26 Athens, Greece; (C.H.P.); (S.L.)
| | - Gergely Ágoston
- Department of Family Medicine, University of Szeged, H-6725 Szeged, Hungary; (G.A.); (I.S.)
| | - Istvan Szabó
- Department of Family Medicine, University of Szeged, H-6725 Szeged, Hungary; (G.A.); (I.S.)
| | - Krasimira Hristova
- Department of Noninvasive Functional Diagnostic and Imaging, National Heart Hospital, 1309 Sofia, Bulgaria; (K.H.); (S.N.T.)
| | - Svetlin Netkov Tsonev
- Department of Noninvasive Functional Diagnostic and Imaging, National Heart Hospital, 1309 Sofia, Bulgaria; (K.H.); (S.N.T.)
| | - Elena Galli
- Centre Hospitalier Universitaire de Rennes, Inserm, University of Rennes, LTSI—UMR 1099, F-35000 Rennes, France; (E.G.); (E.D.)
| | - Dragos Vinereanu
- Department of Cardiology, University of Medicine and Pharmacy Carol Davila—Emergency and University Hospital, 050474 Bucharest, Romania; (D.V.); (S.M.B.)
| | - Sorina Mihaila Baldea
- Department of Cardiology, University of Medicine and Pharmacy Carol Davila—Emergency and University Hospital, 050474 Bucharest, Romania; (D.V.); (S.M.B.)
| | - Denisa Muraru
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, 35122 Padua, Italy; (G.S.); (D.M.)
- Department of Medicine and Surgery, University of Milano-Bicocca, 20126 Milan, Italy
| | - Sergio Mondillo
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, 53100 Siena, Italy; (G.E.M.); (M.C.P.); (S.M.)
| | - Erwan Donal
- Centre Hospitalier Universitaire de Rennes, Inserm, University of Rennes, LTSI—UMR 1099, F-35000 Rennes, France; (E.G.); (E.D.)
| | - Maurizio Galderisi
- Department of Advanced Biomedical Sciences, Federico II, University Hospital, 80131 Naples, Italy; (R.E.); (C.S.); (M.G.)
| | - Bernard Cosyns
- Centre for Cardiovascular Diseases, University Hospital of Brussels, B-1090 Brussels, Belgium; (A.I.M.); (B.C.)
| | - Thor Edvardsen
- Center for Cardiological Innovation, Department of Cardiology, Oslo University Hospital, Rikshospitalet, 0372 Oslo, Norway;
- Faculty of Medicine, University of Oslo, 0315 Oslo, Norway
| | - Bogdan A. Popescu
- Department of Cardiology, University of Medicine and Pharmacy “Carol Davila”—Euroecolab, Emergency Institute for Cardiovascular Diseases “Prof. Dr. C. C. Iliescu”, Sos. Fundeni 258, 022328 Bucharest, Romania;
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131
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Karaliute R, Jureviciute J, Jurgaityte J, Rimkute A, Mizariene V, Baksyte G, Kazakevicius T, Urboniene D, Kavoliuniene A. The Predictive Value of Tissue Doppler Indices for Early Recurrence of Atrial Fibrillation After Electrical Cardioversion. Clin Interv Aging 2020; 15:1917-1925. [PMID: 33116446 PMCID: PMC7548222 DOI: 10.2147/cia.s263303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 07/19/2020] [Indexed: 12/14/2022] Open
Abstract
Purpose Spectral tissue Doppler-derived E/e’ ratio has been proposed as the best parameter for prediction of atrial fibrillation (AF). Relaxation and contraction are equivalent parts of a continuous cardiac cycle, where systolic and diastolic abnormalities have a variable contribution to the left ventricle (LV) failure. The aim of this study was to investigate whether the E/(e’xs’) ratio is a better index than E/e‘ to predict AF recurrence and to determine the changes of spectral tissue Doppler indices 1 month after the electrical cardioversion (ECV). Patients and Methods The study included 77 persistent AF patients with restored sinus rhythm (SR) after ECV. Only patients with normal LV ejection fraction (EF) were included. Echocardiography and NT-proBNP laboratory findings were performed. A primary outcome was the early (within 1 month) recurrence of AF. Results After a 1 month follow-up period, 39 patients (50.6%) were in SR. E/e′ (HR=1.74, P=0.001) and E/(e’×s’) ratios (HR=8.17, P=0.01) were significant predictors of AF recurrence. E/(e’×s’) in combination with LV end-diastolic diameter >49.3 mm and NT-proBNP >2000 ng/L demonstrated a higher contribution in the model to predict AF recurrence compared to the E/e’ ratio (18.94, P=0.005 vs 1.95, P=0.001). On ROC analysis, E/(e’×s’) and E/e′ showed similar diagnostic accuracy (E/(e’×s’), AUC=0.71, P=0.002 and E/e′, AUC=0.75, P<0.0001). Average e‘ value significantly decreased after 1 month in SR (from 10.76±1.24 to 8.96±1.47 cm/s, P=0.01), E wave did not change significantly and E/e′ ratio tended to improve. A decrease of average e‘ and an increase of average s‘ values led to significant improvement of E/(e’xs’) ratio. Conclusion E/(e’xs’) and E/e’ ratios are comparable to predict early AF recurrence after ECV in patients with persistent AF. The e’ value decreased significantly after 1 month follow-up period after ECV for persistent AF patients.
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Affiliation(s)
- Rasa Karaliute
- Laboratory of Behavioral Medicine, Neuroscience Institute, Lithuanian University of Health Sciences, Kaunas, Lithuania.,Department of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Justina Jureviciute
- Department of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Julija Jurgaityte
- Department of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Agne Rimkute
- Department of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Vaida Mizariene
- Department of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Giedre Baksyte
- Department of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Tomas Kazakevicius
- Department of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Daiva Urboniene
- Department of Laboratory Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Ausra Kavoliuniene
- Department of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
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132
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Morrone D, Arbucci R, Wierzbowska-Drabik K, Ciampi Q, Peteiro J, Agoston G, Varga A, Camarozano AC, Boshchenko A, Ryabova T, Dekleva M, Simova I, Lowenstein Haber DM, Tesic M, Boskovic N, Djordjevic-Dikic A, Beleslin B, D'Alfonso MG, Mori F, Rodrìguez-Zanella H, Kasprzak JD, Cortigiani L, Lattanzi F, Scali MC, Torres MAR, Daros CB, de Castro E Silva Pretto JL, Gaibazzi N, Zagatina A, Zhuravskaya N, Amor M, Mieles PEV, Merlo PM, Monte I, D'Andrea A, Re F, Di Salvo G, Merli E, Lorenzoni V, De Nes M, Paterni M, Limongelli G, Prota C, Citro R, Colonna P, Villari B, Antonini-Canterin F, Carpeggiani C, Lowenstein J, Picano E. Feasibility and functional correlates of left atrial volume changes during stress echocardiography in chronic coronary syndromes. Int J Cardiovasc Imaging 2020; 37:953-964. [PMID: 33057991 DOI: 10.1007/s10554-020-02071-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/09/2020] [Indexed: 10/23/2022]
Abstract
An enlarged left atrial volume index (LAVI) at rest mirrors increased LA pressure and/or impairment of LA function. A cardiovascular stress may acutely modify left atrial volume (LAV) within minutes. Aim of this study was to assess the feasibility and functional correlates of LAV-stress echocardiography (SE) Out of 514 subjects referred to 10 quality-controlled labs, LAV-SE was completed in 490 (359 male, age 67 ± 12 years) with suspected or known chronic coronary syndromes (n = 462) or asymptomatic controls (n = 28). The utilized stress was exercise in 177, vasodilator in 167, dobutamine in 146. LAV was measured with the biplane disk summation method. SE was performed with the ABCDE protocol. The intra-observer and inter-observer LAV variability were 5% and 8%, respectively. ∆-LAVI changes (stress-rest) were negatively correlated with resting LAVI (r = - 0.271, p < 0.001) and heart rate reserve (r = -.239, p < 0.001). LAV-dilators were defined as those with stress-rest increase ≥ 6.8 ml/m2, a cutoff derived from a calculated reference change value above the biological, analytical and observer variability of LAVI. LAV dilation occurred in 56 patients (11%), more frequently with exercise (16%) and dipyridamole (13%) compared to dobutamine (4%, p < 0.01). At multivariable logistic regression analysis, B-lines ≥ 2 (OR: 2.586, 95% CI = 1.1293-5.169, p = 0.007) and abnormal contractile reserve (OR: 2.207, 95% CI = 1.111-4.386, p = 0.024) were associated with LAV dilation. In conclusion, LAV-SE is feasible with high success rate and low variability in patients with chronic coronary syndromes. LAV dilation is more likely with reduced left ventricular contractile reserve and pulmonary congestion.
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Affiliation(s)
| | - Rosina Arbucci
- Cardiodiagnosticos, Investigaciones Medicas, Buenos Aires, Argentina
| | | | - Quirino Ciampi
- Cardiology Division, Fatebenefratelli Hospital, Benevento, Italy
| | - Jesus Peteiro
- CHUAC- Complexo Hospitalario Universitario A Coruna- University of A Coruna, La Coruna, Spain
| | - Gergely Agoston
- Institute of Family Medicine, University of Szeged, Szeged, Hungary
| | - Albert Varga
- Institute of Family Medicine, University of Szeged, Szeged, Hungary
| | - Ana Cristina Camarozano
- Hospital de Clinicas UFPR, Medicine Department, Federal University of Paranà, Curitiba, Brazil
| | - Alla Boshchenko
- Cardiology Research Institute, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russian Federation
| | - Tamara Ryabova
- Cardiology Research Institute, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russian Federation
| | - Milica Dekleva
- Clinical Cardiology Department, Clinical Hospital Zvezdara, Medical School, University of Belgrade, Belgrade, Serbia
| | - Iana Simova
- Head of Cardiology Department, Acibadem City Clinic Cardiovascular Center, University Hospital, Sofia, Bulgaria
| | | | - Milorad Tesic
- Cardiology Clinic, Clinical Center of Serbia, Medical School, University of Belgrade, Belgrade, Serbia
| | - Nikola Boskovic
- Cardiology Clinic, Clinical Center of Serbia, Medical School, University of Belgrade, Belgrade, Serbia
| | - Ana Djordjevic-Dikic
- Cardiology Clinic, Clinical Center of Serbia, Medical School, University of Belgrade, Belgrade, Serbia
| | - Branko Beleslin
- Cardiology Clinic, Clinical Center of Serbia, Medical School, University of Belgrade, Belgrade, Serbia
| | - Maria Grazia D'Alfonso
- SOD Diagnostica Cardiovascolare, DAI Cardio-Toraco-Vascolare, Azienda Ospedaliera-Universitaria Careggi, Firenze, Italy
| | - Fabio Mori
- SOD Diagnostica Cardiovascolare, DAI Cardio-Toraco-Vascolare, Azienda Ospedaliera-Universitaria Careggi, Firenze, Italy
| | | | | | | | - Fabio Lattanzi
- Cardiothoracic Department, University of Pisa, Pisa, Italy
| | | | - Marco A R Torres
- Hospital de Clinicas de Porto Alegre - Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | | | | | - Nicola Gaibazzi
- Cardiology Department, Parma University Hospital, Parma, Italy
| | - Angela Zagatina
- Cardiology Department, Saint Petersburg State University Clinic, Saint Petersburg State University, St Petersburg, Russian Federation
| | - Nadezhda Zhuravskaya
- Cardiology Department, Saint Petersburg State University Clinic, Saint Petersburg State University, St Petersburg, Russian Federation
| | - Miguel Amor
- Cardiology Department, Ramos Mejia Hospital, Buenos Aires, Argentina
| | | | | | - Ines Monte
- Echocardiography Lab, Cardio-Thorax-Vascular Department, "Policlinico Vittorio Emanuele", Catania University, Catania, Italy
| | | | - Federica Re
- Cardiology Division, Ospedale San Camillo, Rome, Italy
| | - Giovanni Di Salvo
- Cardiology Division, Pediatric Cardiology Department, Brompton Hospital, Imperial College of London, London, UK
| | - Elisa Merli
- Department of Cardiology, Ospedale per gli Infermi, Faenza, Ravenna, Italy
| | | | - Michele De Nes
- Biomedicine Department, Institute of Clinical Physiology, CNR, Pisa, Italy
| | - Marco Paterni
- Biomedicine Department, Institute of Clinical Physiology, CNR, Pisa, Italy
| | | | - Costantina Prota
- Cardiology Division, Fatebenefratelli Hospital, Benevento, Italy
| | - Rodolfo Citro
- Cardiology Department and Echocardiography Lab, University Hospital "San Giovanni Di Dio e Ruggi D'Aragona", Salerno, Italy.,Italian Society of Echocardiography and Cardiovascular Imaging, Rome, Italy
| | - Paolo Colonna
- Italian Society of Echocardiography and Cardiovascular Imaging, Rome, Italy.,Cardiology Hospital, Policlinico University Hospital of Bari, Bari, Italy
| | - Bruno Villari
- Cardiology Division, Fatebenefratelli Hospital, Benevento, Italy
| | - Francesco Antonini-Canterin
- Italian Society of Echocardiography and Cardiovascular Imaging, Rome, Italy.,Cardiac Prevention and Rehabilitation Unit, Highly Specialized Rehabilitation Hospital Motta Di Livenza, Treviso, Italy
| | - Clara Carpeggiani
- Biomedicine Department, Institute of Clinical Physiology, CNR, Pisa, Italy
| | - Jorge Lowenstein
- Cardiodiagnosticos, Investigaciones Medicas, Buenos Aires, Argentina
| | - Eugenio Picano
- Biomedicine Department, Institute of Clinical Physiology, CNR, Pisa, Italy.
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Kiatsilapanan A, Surachetpong SD. Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography. BMC Vet Res 2020; 16:344. [PMID: 32948164 PMCID: PMC7501631 DOI: 10.1186/s12917-020-02557-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 09/04/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Left atrial (LA) function plays an important role in diastolic dysfunction in cats with hypertrophic cardiomyopathy (HCM). Two-dimensional speckle tracking echocardiography (2D-STE) is a technique for assessing LA function. This study aimed to evaluate the LA function in HCM cats compared to normal cats, using 2D-STE. RESULTS Seventeen client-owned cats affected with HCM and twenty healthy control cats were studied. Conventional echocardiographic and 2D-STE variables were measured and compared between groups (control and HCM groups). Variability of the peak atrial longitudinal strain (PALS) displayed good reproducibility with 4.7% intra-observer and 14% inter-observer repeatability. The mean value of PALS in the HCM group (13.16 ± 8.64) was lower than that in the control group (28.54 ± 10.31) (P < 0.001). PALS was lowest in the LA roof region. The atrial longitudinal strains of septal and lateral regions were significantly lower in the HCM group than in the normal group. The PALS correlated with the percentage of the LA fractional shortening (LA-FS) (r = 0.538, P = 0.001), the percentage of the LA ejection fraction (LA-EF) (r = 0.797, P < 0.001), and the LA fractional area change (FAC) (r = 0.746, P < 0.001). CONCLUSIONS PALS is a feasible and reproducible method to evaluate the LA function in cats affected with HCM.
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Affiliation(s)
- Arisara Kiatsilapanan
- Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, 10330, Bangkok, Thailand
| | - Sirilak Disatian Surachetpong
- Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, 10330, Bangkok, Thailand.
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134
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Kiatsilapanan A, Surachetpong SD. Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography. BMC Vet Res 2020. [PMID: 32948164 DOI: 10.1186/s12917-020-02557-3.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Left atrial (LA) function plays an important role in diastolic dysfunction in cats with hypertrophic cardiomyopathy (HCM). Two-dimensional speckle tracking echocardiography (2D-STE) is a technique for assessing LA function. This study aimed to evaluate the LA function in HCM cats compared to normal cats, using 2D-STE. RESULTS Seventeen client-owned cats affected with HCM and twenty healthy control cats were studied. Conventional echocardiographic and 2D-STE variables were measured and compared between groups (control and HCM groups). Variability of the peak atrial longitudinal strain (PALS) displayed good reproducibility with 4.7% intra-observer and 14% inter-observer repeatability. The mean value of PALS in the HCM group (13.16 ± 8.64) was lower than that in the control group (28.54 ± 10.31) (P < 0.001). PALS was lowest in the LA roof region. The atrial longitudinal strains of septal and lateral regions were significantly lower in the HCM group than in the normal group. The PALS correlated with the percentage of the LA fractional shortening (LA-FS) (r = 0.538, P = 0.001), the percentage of the LA ejection fraction (LA-EF) (r = 0.797, P < 0.001), and the LA fractional area change (FAC) (r = 0.746, P < 0.001). CONCLUSIONS PALS is a feasible and reproducible method to evaluate the LA function in cats affected with HCM.
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Affiliation(s)
- Arisara Kiatsilapanan
- Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, 10330, Bangkok, Thailand
| | - Sirilak Disatian Surachetpong
- Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, 10330, Bangkok, Thailand.
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135
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Argento LV, Travetto CM, Colicigno MDLM, Marambio G, Gentile S, Salvati A, Lax J, Cianciulli T. Tissue Doppler Imaging and strain rate of the left atrial lateral wall: age related variations and comparison with parameters of diastolic function. Cardiovasc Ultrasound 2020; 18:38. [PMID: 32912235 PMCID: PMC7488512 DOI: 10.1186/s12947-020-00221-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 08/18/2020] [Indexed: 11/29/2022] Open
Abstract
Background Strain Rate Imaging (SRI) is one of the most used techniques to study left atrial (LA) and diastolic function. Its availability in low-income countries is diminished since it requires additional expensive software, among other limitations. In contrast, Tissue Doppler Imaging (TDI) is widely available and easy to use. We hypothesize TDI could detect changes in LA and diastolic function associated with age similarly to SRI. The aim of this study is to evaluate the effects of age on LA and diastolic function assessed by LA lateral wall TDI online by spectral pulse, and to compare them with age-related variations of LA SRI and other parameters of diastolic function in a population of healthy adults. Materials and methods Ninety-one healthy adults were prospectively evaluated. In apical four - chamber view the LA lateral wall was divided in three portions. Peak velocities of basal and mid portions were measured with TDI online by spectral pulse and with SRI by speckle tracking. A first positive wave (S’la and SRS) and two negative waves (E’la and SRE, and A’la and SRA respectively) were obtained. E’la/A’la ratio and SRE/SRA ratio were analyzed. The distribution of the variables by age subgroups was described and analyzed. Correlation analyses were performed. Results The median age was 42 years old and 54.9% were female. E’la/A’la showed a negative good correlation with age. E’la/A’la and SRE/SRA ratios changed from > 1 to < 1 in the age group of 41–50 years old, while this occurred in the group of 51–60 years old for the E/A ratio. Lateral and septal mitral annulus E´ showed decrease with age and prolongation of E-wave deceleration time was observed in the age group over 61 years old. Conclusion Normal values according to age group of TDI of the LA lateral wall were obtained. Age-related changes in LA and diastolic function could be detected as early with TDI as with SRI. Future studies are required to explore if this method could be used to address in part LA or diastolic function in other populations with established cardiovascular disease or at risk of presenting it, which could be useful in low-income settings, where SRI is not available.
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Affiliation(s)
- Laura V Argento
- Hospital General de Agudos Dr. Cosme Argerich, Pi y Margall 750 (C1155AHD) CABA, Buenos Aires, Argentina. .,Sanatorio Clínica Modelo de Modelo de Morón, Buenos Aires, Argentina.
| | | | | | - Gerardo Marambio
- Hospital General de Agudos Dr. Cosme Argerich, Pi y Margall 750 (C1155AHD) CABA, Buenos Aires, Argentina
| | - Silvia Gentile
- Sanatorio Clínica Modelo de Modelo de Morón, Buenos Aires, Argentina
| | - Ana Salvati
- Sanatorio Clínica Modelo de Modelo de Morón, Buenos Aires, Argentina.,Fellow of the American College of Cardiology, Washington DC, USA
| | - Jorge Lax
- Hospital General de Agudos Dr. Cosme Argerich, Pi y Margall 750 (C1155AHD) CABA, Buenos Aires, Argentina.,Fellow of the American College of Cardiology, Washington DC, USA
| | - Tomás Cianciulli
- Hospital General de Agudos Dr. Cosme Argerich, Pi y Margall 750 (C1155AHD) CABA, Buenos Aires, Argentina.,Sanatorio Clínica Modelo de Modelo de Morón, Buenos Aires, Argentina.,Fellow of the American College of Cardiology, Washington DC, USA.,Fellow of the American Society of Echocardiography, Durham, USA
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136
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Nollet EE, Manders EM, Goebel M, Jansen V, Brockmann C, Osinga J, van der Velden J, Helmes M, Kuster DWD. Large-Scale Contractility Measurements Reveal Large Atrioventricular and Subtle Interventricular Differences in Cultured Unloaded Rat Cardiomyocytes. Front Physiol 2020; 11:815. [PMID: 32848817 PMCID: PMC7396550 DOI: 10.3389/fphys.2020.00815] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 06/18/2020] [Indexed: 01/22/2023] Open
Abstract
The chambers of the heart fulfill different hemodynamic functions, which are reflected in their structural and contractile properties. While the atria are highly elastic to allow filling from the venous system, the ventricles need to be able to produce sufficiently high pressures to eject blood into the circulation. The right ventricle (RV) pumps into the low pressure pulmonary circulation, while the left ventricle (LV) needs to overcome the high pressure of the systemic circulation. It is incompletely understood whether these differences can be explained by the contractile differences at the level of the individual cardiomyocytes of the chambers. We addressed this by isolating cardiomyocytes from atria, RV, LV, and interventricular septum (IVS) of five healthy wild-type rats. Using a high-throughput contractility set-up, we measured contractile function of 2,043 cells after overnight culture. Compared to ventricular cardiomyocytes, atrial cells showed a twofold lower contraction amplitude and 1.4- to 1.7-fold slower kinetics of contraction and relaxation. The interventricular differences in contractile function were much smaller; RV cells displayed 12–13% less fractional shortening and 5–9% slower contraction and 3–15% slower relaxation kinetics relative to their LV and IVS counterparts. Aided by a large dataset, we established relationships between contractile parameters and found contraction velocity, fractional shortening and relaxation velocity to be highly correlated. In conclusion, our findings are in line with contractile differences observed at the atrioventricular level, but can only partly explain the interventricular differences that exist at the organ level.
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Affiliation(s)
- Edgar E Nollet
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
| | | | - Max Goebel
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
| | - Valentijn Jansen
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
| | - Cord Brockmann
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
| | - Jorrit Osinga
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
| | - Jolanda van der Velden
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
| | - Michiel Helmes
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands.,CytoCypher BV, Wageningen, Netherlands
| | - Diederik W D Kuster
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
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137
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Abstract
While AF most often occurs in the setting of atrial disease, current assessment and treatment of patients with AF does not focus on the extent of the atrial myopathy that serves as the substrate for this arrhythmia. Atrial myopathy, in particular atrial fibrosis, may initiate a vicious cycle in which atrial myopathy leads to AF, which in turn leads to a worsening myopathy. Various techniques, including ECG, plasma biomarkers, electroanatomical voltage mapping, echocardiography, and cardiac MRI, can help to identify and quantify aspects of the atrial myopathy. Current therapies, such as catheter ablation, do not directly address the underlying atrial myopathy. There is emerging research showing that by targeting this myopathy we can help decrease the occurrence and burden of AF.
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Affiliation(s)
- Harold Rivner
- Cardiovascular Division, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, US
| | - Raul D Mitrani
- Cardiovascular Division, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, US
| | - Jeffrey J Goldberger
- Cardiovascular Division, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, US
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138
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Kawel-Boehm N, Bremerich J. The Importance of Left Atrial Function after Myocardial Infarction. Radiology 2020; 296:310-311. [DOI: 10.1148/radiol.2020202132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nadine Kawel-Boehm
- From the Department of Radiology, Kantonsspital Graubuenden, Loestrasse 170, 7000 Chur, Switzerland (N.K.B.); Institute for Diagnostic, Interventional and Pediatric Radiology (DIPR), Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (N.K.B.); and Department of Radiology, University of Basel Hospital, Basel, Switzerland (J.B.)
| | - Jens Bremerich
- From the Department of Radiology, Kantonsspital Graubuenden, Loestrasse 170, 7000 Chur, Switzerland (N.K.B.); Institute for Diagnostic, Interventional and Pediatric Radiology (DIPR), Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (N.K.B.); and Department of Radiology, University of Basel Hospital, Basel, Switzerland (J.B.)
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139
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Flink L, Parwani P, Ursell PC, Bibby D, Fang Q, Schiller NB. Left atrial mass: relationship between gross anatomy and quantitative echocardiography. Cardiovasc Pathol 2020; 49:107265. [PMID: 32745615 DOI: 10.1016/j.carpath.2020.107265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/16/2020] [Accepted: 07/24/2020] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Left atrial (LA) enlargement is associated with increased risk of adverse cardiovascular outcomes. Unlike the left ventricular mass, LA mass has not been described. We sought to define the anatomic mass of the LA using anatomic specimens from autopsy. We hypothesized that LA mass could be estimated by echocardiography. METHODS AND RESULTS Using anatomic specimens of 22 subjects who died and underwent post mortem examination as well as echocardiogram, we defined normal LA mass by weighing anatomic specimens of those with normal LA volume on echocardiogram. Using 17 subjects with normal LA volume on echocardiogram, we found their LA mass on anatomic specimens to be 25.5 ± 6.3 grams (14.4 ± 3.2 g/m2). We developed an echocardiographic measure of LA mass and validated this measurement with paired LA anatomic specimens. We found the normal LA mass on echocardiogram to be 25.4 ± 6.3 g (14.4 ± 2.8 g/m2) which correlated well with anatomic specimens (β = 0.99; Confidence interval CI 0.6-1.4, P < .0001; Pearson correlation coefficient r = 0.83). Furthermore, we defined the normal LA volume to mass ratio as 1.38 ± 0.45. CONCLUSIONS LA mass is an additional parameter with which may contribute to the study of LA morphology.
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Affiliation(s)
- Laura Flink
- San Francisco Veterans Affairs Medical Center, Division of Cardiology, San Francisco, CA, USA; Cardiovascular Research Institute, University of California-San Francisco, San Francisco, CA, USA.
| | - Purvi Parwani
- Cardiovascular Research Institute, University of California-San Francisco, San Francisco, CA, USA
| | - Philip C Ursell
- Department of Pathology, University of California-San Francisco, San Francisco, CA, USA
| | - Dwight Bibby
- Cardiovascular Research Institute, University of California-San Francisco, San Francisco, CA, USA
| | - Qizhi Fang
- Cardiovascular Research Institute, University of California-San Francisco, San Francisco, CA, USA
| | - Nelson B Schiller
- San Francisco Veterans Affairs Medical Center, Division of Cardiology, San Francisco, CA, USA; Cardiovascular Research Institute, University of California-San Francisco, San Francisco, CA, USA
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140
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Left atrial diameter and atrial fibrillation, but not elevated NT-proBNP, predict the development of pulmonary hypertension in patients with HFpEF. J Geriatr Cardiol 2020; 17:400-409. [PMID: 32863822 PMCID: PMC7416065 DOI: 10.11909/j.issn.1671-5411.2020.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND The determinants of pulmonary hypertension (PH) due to heart failure with preserved ejection fraction (HFpEF) have been poorly investigated in patients with cardiovascular diseases (CVD). METHODS From July 1 2017 to March 31 2019, a total of 149 consecutive HFpEF patients hospitalized with CVD were enrolled in this prospective cross-sectional study. A systolic pulmonary artery pressure (PASP) > 35 mmHg estimated by echocardiography was defined as PH-HFpEF. Logistic regression was performed to establish predictors of PH in HFpEF patients. RESULTS Overall, the mean age of participants was 72 ± 11 years, and 74 (49.7%) patients were females. A total of 59 (39.6%) patients were diagnosed with PH-HFpEF by echocardiography. The left atrial diameter (LAD) was related to the ratio of the transmitral flow velocities/mitral annulus tissue velocities in early diastole (E/E') and the left ventricular diameter in systole (LVDs). N-Terminal pro B-type natriuretic peptide (NT-proBNP) was not found to be associated with LAD and impaired diastolic or systolic function of the left ventricle. Multivariable logistic regression showed that atrial fibrillation (AF) increased the risk of PH-HFpEF incidence 3.46-fold with a 95% confidence interval (CI) of 1.44-8.32, P = 0.005. Meanwhile, LAD ≥ 45 mm resulted in a 3.43-fold increased risk, 95% CI: 1.51-7.75, P = 0.003. However, the significance levels of NT-proBNP, age and LVEF were underpowered in the regression model. Two variables, AF and LAD ≥ 45 mm, predicted the PH-HFpEF incidence (C-statistic = 0.773, 95% CI: 0.695-0.852, P < 0.001). CONCLUSIONS Two parameters associated with electrical and anatomical remodelling of the left atrium were related to the incidence of PH in HFpEF patients with CVD.
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141
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Decloedt A, Van Steenkiste G, Vera L, Buhl R, van Loon G. Atrial fibrillation in horses part 1: Pathophysiology. Vet J 2020; 263:105521. [PMID: 32928494 DOI: 10.1016/j.tvjl.2020.105521] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 07/05/2020] [Accepted: 07/21/2020] [Indexed: 01/30/2023]
Abstract
Atrial fibrillation (AF) is the most common clinically relevant arrhythmia in horses, with a reported prevalence up to 2.5%. The pathophysiology has mainly been investigated in experimental animal models and human medicine, with limited studies in horses. Atrial fibrillation results from the interplay between electrical triggers and a susceptible substrate. Triggers consist of atrial premature depolarizations due to altered automaticity or triggered activity, or local (micro)reentry. The arrhythmia is promoted by atrial myocardial ion channel alterations, Ca2+ handling alterations, structural abnormalities, and autonomic nervous system imbalance. Predisposing factors include structural heart disease such as valvular regurgitation resulting in chronic atrial stretch, although many horses show so-called 'lone AF' or idiopathic AF in which no underlying cardiac abnormalities can be detected using routine diagnostic techniques. These horses may have underlying ion channel dysfunction or undiagnosed myocardial (micro)structural alterations. Atrial fibrillation itself results in electrical, contractile and structural remodelling, fostering AF maintenance. Electrical remodelling leads to shortening of the atrial effective refractory period, promoting reentry. Contractile remodelling consists of decreased myocardial contractility, while structural remodelling includes the development of interstitial fibrosis and atrial enlargement. Reverse remodelling occurs after cardioversion to sinus rhythm, but full recovery may take weeks to months depending on duration of AF. The clinical signs of AF depend on the aerobic demands during exercise, ventricular rhythm response and presence of underlying cardiac disease. In horses with so-called 'lone AF', clinical signs are usually absent at rest but during exercise poor performance, exercise-induced pulmonary hemorrhage, respiratory distress, weakness or rarely collapse may develop.
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Affiliation(s)
- Annelies Decloedt
- Equine Cardioteam Gent University, Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Belgium.
| | - Glenn Van Steenkiste
- Equine Cardioteam Gent University, Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Belgium
| | - Lisse Vera
- Equine Cardioteam Gent University, Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Belgium
| | - Rikke Buhl
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Gunther van Loon
- Equine Cardioteam Gent University, Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Belgium
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142
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Cheema B, Kinno M, Gu D, Ryan J, Mitter S, Rigolin V, Thomas J, Puthumana J. Left atrial size and strain in elite athletes: A cross‐sectional study at the NBA Draft Combine. Echocardiography 2020; 37:1030-1036. [DOI: 10.1111/echo.14680] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/07/2020] [Accepted: 04/20/2020] [Indexed: 12/18/2022] Open
Affiliation(s)
- Baljash Cheema
- Division of CardiologyDepartment of MedicineNorthwestern University Feinberg School of Medicine Chicago IL USA
| | - Menhel Kinno
- Division of CardiologyLoyola University Chicago Stritch School of Medicine Maywood IL USA
| | - David Gu
- Division of CardiologyDepartment of MedicineNorthwestern University Feinberg School of Medicine Chicago IL USA
| | - Juliet Ryan
- Division of CardiologyDepartment of MedicineNorthwestern University Feinberg School of Medicine Chicago IL USA
| | - Sumeet Mitter
- Zena and Michael A. Weiner Cardiovascular InstituteIcahn School of Medicine at Mount Sinai New York NY USA
| | - Vera Rigolin
- Division of CardiologyDepartment of MedicineNorthwestern University Feinberg School of Medicine Chicago IL USA
| | - James Thomas
- Division of CardiologyDepartment of MedicineNorthwestern University Feinberg School of Medicine Chicago IL USA
| | - Jyothy Puthumana
- Division of CardiologyDepartment of MedicineNorthwestern University Feinberg School of Medicine Chicago IL USA
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143
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Ng C, Ahmad A, Budhram DR, He M, Balakrishnan N, Mondal T. Accuracy of Electrocardiography and Agreement with Echocardiography in the Diagnosis of Pediatric Left Atrial Enlargement. Sci Rep 2020; 10:10027. [PMID: 32572091 PMCID: PMC7308350 DOI: 10.1038/s41598-020-66987-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 05/26/2020] [Indexed: 11/09/2022] Open
Abstract
Left atrial enlargement (LAE) is a marker for diastolic cardiac dysfunction. Echocardiograms are considered the gold-standard for diagnosis, but given their wider access and lower economic cost, electrocardiograms (ECGs) may be useful in identifying patients who would benefit from further investigation. This study investigates the utility of ECG criteria to diagnose LAE in pediatric patients. A retrospective chart review (n = 492) was conducted in patients whose echocardiograms demonstrated LAE by left atrial indexed diameter z-score ≥2.0 and/or increased left atrial to aortic root ratio at various cutoffs (≥1.4, ≥1.6, ≥1.8). ECG criteria studied included: (1) P wave ≥110 msec, (2) P mitrale ≥40 msec, in LII (3) terminal negative P wave deflection in lead V1 > 40 msec, and (4) P/PR segment >1.6 in lead II. Sensitivity, specificity, Cohen's Kappa coefficient (κ), and ROC curves were calculated. A combination of P mitrale ≥40 msec and terminal negative P wave deflection in lead V1 > 40 msec yielded the greatest agreement (κ = 0.221, 95%CI 0.060-0.382), but all ECG criteria used to diagnose LAE had poor diagnostic value (AUC < 0.60). The present ECG criteria should not be used to diagnose LAE in the absence of an echocardiogram and findings should be considered in the context of clinical symptoms.
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Affiliation(s)
- Charis Ng
- Candidate at Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Attila Ahmad
- Department of Pediatric Cardiology, University of Alberta, Edmonton, Canada
| | - Dalton R Budhram
- Candidate at Faculty of Medicine, Queen's University, Kingston, Canada
| | - Mu He
- Department of Mathematics & Statistics, McMaster University, Hamilton, Canada
| | | | - Tapas Mondal
- Department of Pediatric Cardiology, McMaster University, Hamilton, Canada.
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144
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Augustin CM, Fastl TE, Neic A, Bellini C, Whitaker J, Rajani R, O'Neill MD, Bishop MJ, Plank G, Niederer SA. The impact of wall thickness and curvature on wall stress in patient-specific electromechanical models of the left atrium. Biomech Model Mechanobiol 2020; 19:1015-1034. [PMID: 31802292 PMCID: PMC7203597 DOI: 10.1007/s10237-019-01268-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/21/2019] [Indexed: 12/31/2022]
Abstract
The left atrium (LA) has a complex anatomy with heterogeneous wall thickness and curvature. The anatomy plays an important role in determining local wall stress; however, the relative contribution of wall thickness and curvature in determining wall stress in the LA is unknown. We have developed electromechanical finite element (FE) models of the LA using patient-specific anatomical FE meshes with rule-based myofiber directions. The models of the LA were passively inflated to 10mmHg followed by simulation of the contraction phase of the atrial cardiac cycle. The FE models predicted maximum LA volumes of 156.5 mL, 99.3 mL and 83.4 mL and ejection fractions of 36.9%, 32.0% and 25.2%. The median wall thickness in the 3 cases was calculated as [Formula: see text] mm, [Formula: see text] mm, and [Formula: see text] mm. The median curvature was determined as [Formula: see text] [Formula: see text], [Formula: see text], and [Formula: see text]. Following passive inflation, the correlation of wall stress with the inverse of wall thickness and curvature was 0.55-0.62 and 0.20-0.25, respectively. At peak contraction, the correlation of wall stress with the inverse of wall thickness and curvature was 0.38-0.44 and 0.16-0.34, respectively. In the LA, the 1st principal Cauchy stress is more dependent on wall thickness than curvature during passive inflation and both correlations decrease during active contraction. This emphasizes the importance of including the heterogeneous wall thickness in electromechanical FE simulations of the LA. Overall, simulation results and sensitivity analyses show that in complex atrial anatomy it is unlikely that a simple anatomical-based law can be used to estimate local wall stress, demonstrating the importance of FE analyses.
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Affiliation(s)
- Christoph M Augustin
- Department of Mechanical Engineering, University of California, Berkeley, Berkeley, USA
- Gottfried Schatz Research Center: Division of Biophysics, Medical University of Graz, Graz, Austria
| | - Thomas E Fastl
- Department of Biomedical Engineering, King's College London, London, UK
| | - Aurel Neic
- Gottfried Schatz Research Center: Division of Biophysics, Medical University of Graz, Graz, Austria
| | - Chiara Bellini
- Department of Bioengineering, Northeastern University, Boston, USA
| | - John Whitaker
- Department of Cardiology, Guy's and St Thomas' Hospitals, London, UK
| | - Ronak Rajani
- Department of Cardiology, Guy's and St Thomas' Hospitals, London, UK
| | - Mark D O'Neill
- Department of Cardiology, Guy's and St Thomas' Hospitals, London, UK
| | - Martin J Bishop
- Department of Biomedical Engineering, King's College London, London, UK
| | - Gernot Plank
- Gottfried Schatz Research Center: Division of Biophysics, Medical University of Graz, Graz, Austria
- BioTechMed-Graz, Graz, Austria
| | - Steven A Niederer
- Department of Biomedical Engineering, King's College London, London, UK.
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145
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Quantification of left atrial wall motion in healthy horses using two-dimensional speckle tracking. J Vet Cardiol 2020; 30:32-43. [PMID: 32645687 DOI: 10.1016/j.jvc.2020.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 04/21/2020] [Accepted: 04/23/2020] [Indexed: 11/21/2022]
Abstract
INTRODUCTION The mechanical function of the left atrium (LA) plays a pivotal role in modulation of left ventricular filling. Assessment of LA function might be a clinically useful prognostic tool for horses with mitral regurgitation or atrial fibrillation. However, the most accurate, reliable, and clinically useful methods to assess LA myocardial function are yet to be determined. The objective of this study was to describe the methods for quantification of LA wall motion using two-dimensional speckle tracking (2DST) echocardiography in healthy Warmblood horses to quantify measurement variability, to calculate reference intervals for 2DST variables, and to investigate their relationship to sex, age, body weight, and heart rate. ANIMALS, MATERIALS, AND METHODS Twenty-six healthy Warmblood horses were included. 2DST analyses of LA wall motion were performed on digitally stored cine-loop recordings of a standardized right-parasternal four-chamber view focusing on the LA. Longitudinal strain, longitudinal strain rate, and time to peak LA contraction were measured to characterize LA contractile, reservoir, and conduit function. Intraobserver and interobserver measurement variability was quantified, and reference intervals were calculated. RESULTS The coefficient of variation for intraobserver and interobserver measurement variability ranged between 2.0-11.1% and 5.1-15.4%, respectively, for global strain, strain rate, and time to peak LA contraction. Reference intervals for healthy Warmblood horses were reported. CONCLUSION This study shows that 2DST is a feasible and reliable method to quantify LA wall motion throughout the cardiac cycle in healthy Warmblood horses. Further studies are required to establish the clinical value of 2DST for assessment of LA function.
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Li L, Deng YB, Guo LD, Liu K, Zhang J, Tang QY. Evaluation of Long-Term Impact of Pericardiectomy on Left Atrial Functions in Patients with Constrictive Pericarditis Using Speckle Tracking Echocardiography. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:1158-1168. [PMID: 32107091 DOI: 10.1016/j.ultrasmedbio.2020.01.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 01/03/2020] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
The aims of this study were to explore the long-term impact of pericardiectomy on left atrial (LA) functions in patients with constrictive pericarditis (CP) using speckle tracking echocardiography (STE) and to correlate post-operative LA functions with clinical status. Echocardiographic examinations were undertaken in 29 patients with CP 1 wk before and 1, 6 and 12 mo after pericardiectomy. STE was performed to obtain LA global longitudinal strain, including strain during the conduit phase (LAScd), strain during the contraction phase (LASct) the sum of the latter and strain during the reservoir phase (LASr). Control patients consisted of 29 age- and sex-matched healthy volunteers. LASct, LAScd and LASr obtained 6 mo after pericardiectomy improved significantly compared with pre-operative values, but were still lower than the values for control patients. Further increases were observed gradually with normalization of LASct 12 mo after pericardiectomy. However, there were still significant differences between LAScd and LASr obtained in control patients and those obtained 12 mo after pericardiectomy. Moreover, the improvements in LAScd, LASct and LASr 12 mo after pericardiectomy correlated well with symptomatic clinical alleviation (p < 0.01). These results indicate that LA strains analyzed with STE might be useful in evaluating the long-term impact of pericardiectomy on LA functions.
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Affiliation(s)
- Li Li
- Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - You-Bin Deng
- Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ling-Dan Guo
- Department of Medical Ultrasound, Wuhan Center Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kun Liu
- Department of Medical Ultrasound, Third People's Hospital of Hubei Province, Wuhan, China
| | - Jun Zhang
- Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiao-Ying Tang
- Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Robb JS, Hu C, Peters DC. Interleaved, undersampled radial multiple-acquisition steady-state free precession for improved left atrial cine imaging. Magn Reson Med 2020; 83:1721-1729. [PMID: 31605555 PMCID: PMC6982567 DOI: 10.1002/mrm.28036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/31/2019] [Accepted: 09/20/2019] [Indexed: 11/10/2022]
Abstract
PURPOSE Balanced steady-state free precession (bSSFP) left atrial (LA) cine suffers from off-resonance artifacts, particularly in the pulmonary veins (PVs). Linear combination or multiple-acquisition SSFP (MA-SSFP) effectively removes banding but greatly increases scan time. We hypothesized that MA-SSFP with interleaved radial undersampling, where each phase-cycling is acquired with an interleaved set of radial projections, would improve image quality of LA cine with a small increase of scan time and streak artefacts. METHODS Undersampled radial MA-SSFP with and without interleaving was compared with fully sampled radial bSSFP by means of simulations, phantoms, and in vivo imaging. Ten healthy subjects were imaged on a 3T scanner, with bSSFP and MA-SSFP cine of the left atrium, and B0-mapping. Images were assessed (1 = worst, 5 = best) by 2 independent readers, with respect to 5 qualitative criteria and apparent signal-to-noise ratio. RESULTS In healthy subjects, off-resonance differed from the right inferior PVs to the LA cavity by 163 Hz ± 73 Hz at 3T. Compared with fully sampled radial bSSFP, interleaved radial MA-SSFP significantly improved image quality with respect to off-resonance artifacts (3.8 ± 0.6 versus 2.3 ± 1.0; P = 0.005), PV conspicuity (2.8 ± 1.0 versus 4.3 ± 0.5; P = 0.005), and the number of visualized PVs (1.7 ± 0.4 versus 0.9 ± 0.7; P = 0.008), although with greater streak artifacts (3.4 ± 0.4 versus 4.9 ± 0.2; P = 0.004) and lower measured apparent signal-to-noise ratio (24 ± 9 versus 69 ± 36; P = 0.002). Flow artifacts were similar. Interleaved radial MA-SSFP reduced streaking artifacts and increased apparent signal-to-noise ratio versus noninterleaved radial. CONCLUSIONS Interleaved radial MA-SSFP cine reduces banding artifacts with an acceptable increase of scan time and streak artifacts. The proposed technique improves the LA and PV visualization in bSSFP cine imaging.
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Affiliation(s)
| | - Chenxi Hu
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Dana C. Peters
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, Yale University, New Haven, CT, USA
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Malandish A, Tartibian B, Sheikhlou Z, Afsargharehbagh R, Rahmati M. The effects of short-term moderate intensity aerobic exercise and long-term detraining on electrocardiogram indices and cardiac biomarkers in postmenopausal women. J Electrocardiol 2020; 60:15-22. [PMID: 32208176 DOI: 10.1016/j.jelectrocard.2020.03.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 02/23/2020] [Accepted: 03/07/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate the effects of 12-week of moderate-intensity aerobic exercise and 5-month detraining on electrocardiogram (ECG) indices and serum levels of 25-hydroxivitamin D (Vit D), parathyroid hormone (PTH), calcium (Ca2+), and phosphorus (P) in postmenopausal women (PMWs). MATERIALS AND METHODS Thirty-one PMWs (aged 50-70 yrs) were randomized to exercise (EX, n = 16) and control (C, n = 15) groups. EX group performed of 12-week of warm up- walking/jogging moderate intensity aerobic exercise training program- recovery (60 min/day, 3 days/week at 70% of maximal heart rate reserve), and then 5-month detraining remained. C group maintain their normal lifestyle during 8 months. The ECG indices and cardiac serum levels were measured at baseline, after 12-week exercise, and after 5-month detraining. RESULTS After 12-week exercise intervention, P-R interval, serum PTH and serum Vit D were significantly increased in the EX group compared to the C group (P = 0.020, P = 0.001 and P = 0.001, respectively). After 5-month detraining, P-R segment and S-T interval were significantly decreased (P = 0.042 and P = 0.001, respectively) while serum Vit D was significantly increased (P = 0.014) in the EX group compared to the C group. CONCLUSIONS The results suggested that 12-week of moderate intensity aerobic exercise increased the P-R interval, PTH and Vit D, as severe Vit D deficiency status (below 10 ng/ml) improved to Vit D deficiency status (between 10 and 20 ng/ml) in PMWs. Also, long-term positive adaptations to aerobic exercise such as increased Vit D were observed even after 5-month detraining. In addition, P-R segment and S-T interval decreased after 5-month detraining in sedentary PMWs, which may be a sign of atrial positive adaptations to aerobic exercise.
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Affiliation(s)
- Abbas Malandish
- Exercise Physiology, Department of Exercise Physiology, Faculty of Sport Sciences, Urmia University, Urmia, Iran.
| | - Bakhtyar Tartibian
- Exercise Physiology, Department of Sport Injuries & Corrective Exercises, Faculty of Physical Education & Sport Sciences, Allameh Tabataba'i University, Tehran, Iran
| | - Zeinab Sheikhlou
- Exercise Physiology, Department of Exercise Physiology, Faculty of Sport Sciences, Urmia University, Urmia, Iran
| | - Roghaiyeh Afsargharehbagh
- Fellowship of Balloon Angioplasty, Department of Interventional Cardiology, Shohada Hospital, Urmia University of Medical Sciences, Urmia, Iran
| | - Mohammad Rahmati
- Clinical Biochemistry, Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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van der Ven JPG, Alsaied T, Juggan S, Bossers SSM, van den Bosch E, Kapusta L, Kuipers IM, Kroft LJM, Ten Harkel ADJ, van Iperen GG, Rathod RH, Helbing WA. Atrial function in Fontan patients assessed by CMR: Relation with exercise capacity and long-term outcomes. Int J Cardiol 2020; 312:56-61. [PMID: 32139238 DOI: 10.1016/j.ijcard.2020.02.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 01/21/2020] [Accepted: 02/23/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To assess the role of atrial function on exercise capacity and clinical events in Fontan patients. DESIGN We included 96 Fontan patients from 6 tertiary centers, aged 12.8 (IQR 10.1-15.6) years, who underwent cardiac magnetic resonance imaging and cardiopulmonary exercise testing within 12 months of each other from 2004 to 2017. Intra-atrial lateral tunnel (ILT) and extracardiac conduit (ECC) patients were matched 1:1 with regard to age, gender and dominant ventricle. The pulmonary venous atrium was manually segmented in all phases and slices. Atrial function was assessed by volume-time curves. Furthermore, atrial longitudinal and circumferential feature tracking strain was assessed. We determined the relation between atrial function and exercise capacity, assessed by peak oxygen uptake and VE/VCO2 slope, and events (mortality, listing for transplant, re-intervention, arrhythmia) during follow-up. RESULTS Atrial maximal and minimal volumes did not differ between ILT and ECC patients. ECC patients had higher reservoir function (21.1 [16.4-28.0]% vs 18.2 [10.9-22.2]%, p = .03), lower conduit function and lower total circumferential strain (13.8 ± 5.1% vs 18.0 ± 8.7%, p = .01), compared to ILT patients. Only for ECC patients, a better late peak circumferential strain rate predicted better VE/VCO2 slope. No other parameter of atrial function predicted peak oxygen uptake or VE/VCO2 slope. During a median follow-up of 6.2 years, 42 patients reached the composite end-point. No atrial function parameters predicted events during follow-up. CONCLUSIONS ECC patients have higher atrial reservoir function and lower conduit function. Atrial function did not predict exercise capacity or events during follow-up.
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Affiliation(s)
- Jelle P G van der Ven
- Department of Pediatrics, Division of Cardiology, Erasmus Medical Centre - Sophia Children's Hospital, Rotterdam, the Netherlands; Netherlands Heart Institute, Utrecht, the Netherlands
| | - Tarek Alsaied
- Department of Cardiology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA; Department of Cardiology, Cincinnati Children's Hospital, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Saeed Juggan
- Department of Cardiology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Sjoerd S M Bossers
- Department of Pediatrics, Division of Cardiology, Erasmus Medical Centre - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - Eva van den Bosch
- Department of Pediatrics, Division of Cardiology, Erasmus Medical Centre - Sophia Children's Hospital, Rotterdam, the Netherlands; Netherlands Heart Institute, Utrecht, the Netherlands
| | - Livia Kapusta
- Department of Pediatrics, Division of Cardiology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands; Pediatric Cardiology Unit, Tel-Aviv Sourasky Medical Center, Tel Aviv University Sackler School of Medicine, Tel Aviv, Israel
| | - Irene M Kuipers
- Department of Pediatrics, Division of Cardiology, Academic Medical Centre, Amsterdam, the Netherlands
| | - Lucia J M Kroft
- Department of Radiology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Arend D J Ten Harkel
- Department of Pediatrics, Division of Cardiology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Gabrielle G van Iperen
- Department of Pediatrics, Division of Cardiology, University Medical Centre Utrecht - Wilhelmina Children's Hospital, Utrecht, the Netherlands
| | - Rahul H Rathod
- Department of Cardiology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Willem A Helbing
- Department of Pediatrics, Division of Cardiology, Erasmus Medical Centre - Sophia Children's Hospital, Rotterdam, the Netherlands; Department of Radiology, Erasmus Medical Centre, Rotterdam, the Netherlands; Department of Pediatrics, Division of Cardiology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.
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Kurzawski J, Janion-Sadowska A, Zandecki L, Piatek L, Koziel D, Sadowski M. Global peak left atrial longitudinal strain assessed by transthoracic echocardiography is a good predictor of left atrial appendage thrombus in patients in sinus rhythm with heart failure and very low ejection fraction - an observational study. Cardiovasc Ultrasound 2020; 18:7. [PMID: 32061249 PMCID: PMC7024551 DOI: 10.1186/s12947-020-00188-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 02/04/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Peak left atrial longitudinal strain (PALS) can help identify left atrial appendage thrombus (LAAT) in patients with atrial fibrillation. Nevertheless, few studies have been performed in patients in sinus rhythm without established indications for anticoagulation but with increased risk of LAAT, such as heart failure (HF) with severe left ventricular systolic dysfunction patients. The primary aim of this study was to identify clinical and transthoracic echocardiography predictors of LAAT in HF patients with very low left ventricular ejection fraction and sinus rhythm. The secondary objective was to analyze frequencies and predictors of a composite clinical endpoint of death or hospitalization for ischemic stroke. METHODS We included 63 patients with HF, left ventricular ejection fraction < 25%, sinus rhythm at presentation, no history of atrial fibrillation, and without any established indications for anticoagulation. We determined whether clinical and transthoracic echocardiography parameters, including left atrial strain analysis, predicted LAAT. Transesophageal echocardiography was performed in all patients. When LAAT was detected, anticoagulation was recommended. The participants were followed for a median of 28.6 months (range 4-40) to determine the composite endpoint. RESULTS LAAT was found in 20 (31.7%) patients. Global PALS was the best independent predictor of LAAT in univariate and multivariate logistic regression analyses (Gini coefficient 0.65, area under the receiver-operating characteristic curve 0.83). A global PALS value below 8% was a good discriminator of LAAT presence (odds ratio 30.4, 95% CI 7.2-128, p < 0.001). During follow-up, 18 subjects (28.6%) reached the composite clinical endpoint. CHA2DS2-VASc score, use of angiotensin-converting-enzyme inhibitors or angiotensin receptor blockers, and body surface area were significant predictors for the composite endpoint of death or hospitalization for ischemic stroke in the multivariate regression model. CONCLUSIONS LAAT was relatively common in our group of HF patients and PALS has shown prognostic potential in LAAT identification. Further research is needed to determine whether initiation of anticoagulation or additional screening supported by PALS measurements will improve clinical outcomes in these patients.
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Affiliation(s)
| | | | - Lukasz Zandecki
- The Jan Kochanowski University, ul. Stefana Zeromskiego 5, 25-001, Kielce, Poland.
| | - Lukasz Piatek
- The Jan Kochanowski University, ul. Stefana Zeromskiego 5, 25-001, Kielce, Poland
| | - Dorota Koziel
- The Jan Kochanowski University, ul. Stefana Zeromskiego 5, 25-001, Kielce, Poland
| | - Marcin Sadowski
- The Jan Kochanowski University, ul. Stefana Zeromskiego 5, 25-001, Kielce, Poland
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