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https://www.readbyqxmd.com/read/28724945/effect-of-septal-flash-on-right-ventricular-systolic-function-in-left-bundle-branch-block-patients-with-preserved-left-ventricular-ejection-fraction
#1
Guang-Yuan Li, Yong-Huai Wang, Zheng-Yu Guan, Xuan-Yi Jin, Yang Li, Shuang Liu, Chun-Yan Ma, Jun Yang
A leftward motion of the ventricular septum prior to ejection, known as the septal flash (SF), is frequently observed in patients with left bundle-branch block (LBBB). We investigated whether the abnormal motion of the ventricular septum affects right ventricle (RV) contractile performance in LBBB patients with preserved left ventricular ejection fraction (LVEF). Forty-four patients with complete LBBB were selected using standard 12-lead electrocardiograms (ECGs), with 30 healthy individuals serving as controls...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28722247/left-ventricular-function-and-regional-strain-with-subtly-tagged-steady-state-free-precession-feature-tracking
#2
Eric M Schrauben, Brett R Cowan, Andreas Greiser, Alistair A Young
PURPOSE: To provide regional strain and ventricular volume from a single acquisition, using subtly tagged steady-state free precession (SubTag SSFP) feature tracking. MATERIALS AND METHODS: The effects on regional strain of tag strength in gradient recalled echo (GRE) tagging, flip angle in untagged balanced SSFP, and both in SubTag SSFP were examined in the mid left ventricle of 15 healthy volunteers at 3T. Optimal parameters were determined from varying both tag strength and SSFP flip angle using full tag saturation GRE as the reference standard...
July 19, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28702435/interval-and-continuous-aerobic-exercise-training-similarly-increase-cardiac-function-and-autonomic-modulation-in-infarcted-mice
#3
Cesar Cavinato Cal Abad, Ademir Manuel do Nascimento, Leandro Eziquiel Dos Santos, Diego Figueroa, Pamella Ramona, Michele Sartori, Katia B Scapini, Oscar Albuquerque, Ivana Cinthya Moraes-Silva, Hélio José Coelho-Júnior, Bruno Rodrigues, Cristiano Teixeira Mostarda, Kátia De Angelis, Maria Cláudia Irigoyen
The present study aimed to compare the effects of moderate-intensity continuous and high-intensity interval exercise training (ET) on exercise tolerance, cardiac morphometry and function, hemodynamic, and cardiac autonomic modulation in myocardial infarcted mice. Wild-type mice (WT) were divided into four groups: sedentary WT (S); WT myocardium infarction sedentary (IS); WT myocardium infarction underwent to moderate-intensity continuous ET (MICT), and WT myocardium infarction underwent to high-intensity interval ET (MIIT)...
June 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28701527/relationship-between-myocardial-function-body-mass-index-and-outcome-after-st-segment-elevation-myocardial-infarction
#4
Emer Joyce, Georgette E Hoogslag, Vasileios Kamperidis, Philippe Debonnaire, Spyridon Katsanos, Bart Mertens, Nina Ajmone Marsan, Jeroen J Bax, Victoria Delgado
BACKGROUND: Better survival for overweight and obese patients after ST-segment-elevation myocardial infarction (STEMI) has been demonstrated. The association between body mass index (BMI), outcome, and left ventricular (LV) structure and function after STEMI, including LV longitudinal strain (global longitudinal strain), was evaluated. METHODS AND RESULTS: First patients with STEMI undergoing primary percutaneous coronary intervention (n=1604; mean age, 61±12 years; 75% men) had BMI measured on admission, and 2-dimensional transthoracic echocardiography performed within 48 hours...
July 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28700019/assessment-of-subclinical-doxorubicin-induced-cardiotoxicity-in-a-rat-model-by-speckle-tracking-imaging
#5
Yu Kang, Wei Wang, Hang Zhao, Zhiqing Qiao, Xuedong Shen, Ben He
Backgrounds: Despite their clear therapeutic benefits, anthracycline-induced cardiotoxicity is a major concern limiting the ability to reduce morbidity and mortality associated with cancers. The early identification of anthracycline-induced cardiotoxicity is of vital importance to assess the cardiac risk against the potential cancer treatment. Objective: To investigate whether speckle-tracking analysis can provide a sensitive and accurate measurement when detecting doxorubicin-induced left ventricular injury...
July 10, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28698984/echocardiographic-evaluation-of-cardiac-function-after-cancer-chemotherapy
#6
REVIEW
Tomoko Negishi, Kazuaki Negishi
Progress in cancer therapy has led to improved prognosis of patients with cancer and thus to a continuous rise of cancer survivors. However, it has simultaneously increased cardiovascular morbidity and mortality rates due to direct and/or indirect side effects of anticancer treatment. Similar to the rapid rise of patients with adult congenital disease, the number of patients suffering or at risk of cardiotoxicity has been steeply increasing and getting an emerging issue. Among the many facets of chemotherapy-induced cardiovascular toxicity, this review attempts to summarize echocardiographic evaluation of cardiac function after cancer chemotherapy by reviewing the definition, risk factors, brief history, limitation of left ventricular ejection fraction and myocardial strain imaging, as well as the limitations of this technique...
July 11, 2017: Journal of Echocardiography
https://www.readbyqxmd.com/read/28691201/combined-myocardial-deformation-to-predict-cardiac-resynchronization-therapy-response-in-non-ischemic-cardiomyopathy
#7
Ning Yang, Zhao-Guang Liang, Zhao-Jun Wang, Hui Liu, Chao Chi, Yan-Feng Tian, Shu-Han Qi, Bi-Yu Wang, Wei Han
BACKGROUND: 20-30% of patients do not benefit from CRT when the established selection criteria were applied. We hypothesized that a combined assessment of mechanical dyssynchrony, myocardial deformation and diastolic function would identify patients who would benefit most from CRT. METHOD: In 36 CRT patients, clinical evaluation and echocardiography were performed before and after CRT. Patients were classified into 3 subgroups according to their amount of response: echocardiographic responders, clinical responders, and nonresponders...
July 10, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28689753/comparison-of-left-ventricular-function-and-myocardial-infarct-size-determined-by-2-dimensional-speckle-tracking-echocardiography-in-patients-with-and-without-chronic-obstructive-pulmonary-disease-after-st-segment-elevation-myocardial-infarction
#8
Laurien Goedemans, Rachid Abou, Georgette E Hoogslag, Nina Ajmone Marsan, Christian Taube, Victoria Delgado, Jeroen J Bax
Patients with chronic obstructive pulmonary disease (COPD) have a high risk of mortality after acute ST-segment elevation myocardial infarction (STEMI). We compared STEMI patients with versus without COPD in terms of infarct size and left ventricular (LV) systolic function using advanced 2-dimensional speckle tracking echocardiography. Of 1,750 patients with STEMI (mean age 61 ± 12 years, 76% male), 133 (7.6%) had COPD. With transthoracic echocardiography, left ventricular ejection fraction (LVEF) and wall motion score index were measured...
June 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28688952/left-ventricular-mechanics-in-children-with-hypertrophic-cardiomyopathy-cmr-study
#9
Łukasz Mazurkiewicz, Lidia Ziółkowska, Joanna Petryka, Mateusz Śpiewak, Łukasz Małek, Agata Kubik, Magdalena Marczak, Jolanta Misko, Grażyna Brzezińska-Rajszys
OBJECTIVES: To assess the magnitude of myocardial displacement abnormalities and their alterations with the fibrosis, left-ventricular (LV) outflow tract obstruction (LVOTO) and hypertrophy in juveniles with hypertrophic cardiomyopathy (HCM). STUDY DESIGN: Fifty-five children [age 12,5±4.6years, 38 (69,1%) males, 19 (34,5%) with LVOTO] with HCM and 20 controls underwent cardiovascular magnetic resonance. The LV feature tracking (FT) derived strain and strain rates were quantified...
July 5, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28685602/relationship-of-biomarkers-of-extracellular-matrix-with-myocardial-function-in-type-2-diabetes-mellitus
#10
Ju-Hua Liu, Yan Chen, Zhe Zhen, Lai-Ming Ho, Anita Tsang, Michele Yuen, Karen Lam, Hung-Fat Tse, Kai-Hang Yiu
AIM: The study evaluated the relationship of extracellular matrix and renin angiotensin system with myocardial dysfunction in Type 2 diabetes mellitus. METHODS: All patients underwent resting and exercise echocardiography, including conventional parameters, E/E' ratio, global longitudinal strain and diastolic function reserve index. Plasma matrix metalloproteinase-1, TIMP-1, amino-terminal propeptide of type I and type III procollagen and renin angiotensin system activity were measured...
July 7, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28685315/clinical-feasibility-and-validation-of-3d-principal-strain-analysis-from-cine-mri-comparison-to-2d-strain-by-mri-and-3d-speckle-tracking-echocardiography
#11
Alessandro Satriano, Bobak Heydari, Mariam Narous, Derek V Exner, Yoko Mikami, Monica M Attwood, John V Tyberg, Carmen P Lydell, Andrew G Howarth, Nowell M Fine, James A White
Two-dimensional (2D) strain analysis is constrained by geometry-dependent reference directions of deformation (i.e. radial, circumferential, and longitudinal) following the assumption of cylindrical chamber architecture. Three-dimensional (3D) principal strain analysis may overcome such limitations by referencing intrinsic (i.e. principal) directions of deformation. This study aimed to demonstrate clinical feasibility of 3D principal strain analysis from routine 2D cine MRI with validation to strain from 2D tagged cine analysis and 3D speckle tracking echocardiography...
July 6, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28675049/importance-of-material-parameters-and-strain-energy-function-on-the-wall-stresses-in-the-left-ventricle
#12
Sareh Behdadfar, Laurent Navarro, Joakim Sundnes, Molly M Maleckar, Stéphane Avril
Patient-specific estimates of the stress distribution in the left ventricles (LV) may have important applications for therapy planning, but computing the stress generally requires knowledge of the material behaviour. The passive stress-strain relation of myocardial tissue has been characterized by a number of models, but material parameters (MPs) remain difficult to estimate. The aim of this study is to implement a zero-pressure algorithm to reconstruct numerically the stress distribution in the LV without precise knowledge of MPs...
July 4, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28673476/prediction-for-improvement-and-remodeling-in-first-onset-myocardial-infarction-by-speckle-tracking-echocardiography-is-global-or-regional-selection-better
#13
Bo Hu, Qing Zhou, Jinling Chen, Tuantuan Tan, Xue Yao, Hongning Song, Ruiqiang Guo
Cardiac function improvement and chamber remodeling after the onset of acute myocardial infarction (AMI) is crucial as it is closely related to the outcomes of patients. We sought to investigate the predictive value of left ventricular (LV) global and region of interest (ROI) assessment for prognosis of AMI patients by speckle tracking echocardiography (STE). We prospectively enrolled 81 first-onset AMI patients for baseline and 6-mo follow-up analysis. The echocardiography-derived parameters were compared in receiver operator characteristics (ROC) analysis for prediction of LV remodeling (LVR) (a minimum 20% increase of LV end-diastolic volume) and cardiac function improvement (a minimum 5% increase of LV ejection fraction)...
June 30, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28670832/association-between-left-ventricular-perfusion-defects-and-myocardial-deformation-indexes-in-heart-transplantation-recipients
#14
Antonello D'Andrea, Maria Luisa De Rimini, Raffaella America, Chiara Cirillo, Lucia Riegler, Giuseppe Limongelli, Michele D'Alto, Gemma Salerno, Ciro Maiello, Pietro Muto, Maria Giovanna Russo, Raffaele Calabrò, Eduardo Bossone, Giuseppe Pacileo
The aim of the study was to analyze possible correlations between strain echocardiography (STE) and PET myocardial perfusion in a population of heart transplantation (HTx) recipients showing preserved left ventricular (LV) ejection fraction. By STE, LV global longitudinal strain (LV GLS) was lower in HTx. PET showed no transient or chronic ischemia in 83 of 115 HTx (73%). Fixed perfusion defects were observed in 17% of HTx and reversible ischemia in 10%. Significant coronary stenosis was observed only in 10 cases...
July 3, 2017: Echocardiography
https://www.readbyqxmd.com/read/28670388/left-ventricular-myocardial-strain-in-ventricular-arrhythmia-without-structural-heart-disease-using-cardiac-magnetic-resonance
#15
Xuepei Tang, Sisi Yu, Yaohan Yu, Haibo Ren, Shuhao Li, Li Zhou, Zhen Yang, Hailong Wu, Wei Zhou, Lianggeng Gong
Ventricular arrhythmia (VA) in structurally normal heart is considered as benign. However, these arrhythmias have been recently reported to induce left ventricular (LV) dysfunction. Up to now, there is no efficacious method to detect abnormal myocardial systolic function in VA patients. Therefore, in the current study, we used cardiac magnetic resonance feature tracking (CMR-FT) on balanced steady state free precision (SSFP) cine images to investigate LV myocardial strain in 42 VA patients without known heart disease as well as in 29 normal volunteers...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28670159/predictive-value-of-cardiac-magnetic-resonance-imaging-derived-myocardial-strain-for-poor-outcomes-in-patients-with-acute-myocarditis
#16
Ji Won Lee, Yeon Joo Jeong, Geewon Lee, Nam Kyung Lee, Hye Won Lee, Jin You Kim, Bum-Sung Choi, Ki Seok Choo
OBJECTIVE: To evaluate the utility of cardiovascular magnetic resonance (CMR)-derived myocardial strain measurement for the prediction of poor outcomes in patients with acute myocarditis. MATERIALS AND METHODS: We retrospectively analyzed data from 37 patients with acute myocarditis who underwent CMR. Left ventricular (LV) size, LV mass index, ejection fraction and presence of myocardial late gadolinium enhancement (LGE) were analyzed. LV circumferential strain (EccSAX), radial strain (ErrSAX) from mid-ventricular level short-axis cine views and LV longitudinal strain (EllLV), radial strain (ErrLax) measurements from 2-chamber long-axis views were obtained...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28669395/afterload-dependence-of-right-ventricular-myocardial-strain
#17
Leah Wright, Kazuaki Negishi, Nathan Dwyer, Sudhir Wahi, Thomas H Marwick
BACKGROUND: Right ventricular (RV) free wall strain (RVFWS) is a feasible method for quantitation and follow-up of RV function and may have benefits over traditional markers such as fractional area change. However, like all ejection phase parameters, RVFWS is difficult to assess in the presence of changing afterload. The aim of this study was to compare RVFWS and traditional RV function parameters for tracking progress of RV function in patients with pulmonary arterial hypertension (PAH) over a range of pulmonary artery systolic pressure (PASPs)...
July 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28668226/sustained-chronic-maternal-hyperoxygenation-increases-myocardial-deformation-in-fetuses-with-a-small-aortic-isthmus-at-risk-for-coarctation
#18
Shi Zeng, Jiawei Zhou, Qinghai Peng, Wen Deng, Ming Zang, Tao Wang, Qichang Zhou
BACKGROUND: We aimed to assess differences in myocardial deformation in fetuses at risk for coarctation (CoA) and the effects of maternal hyperoxygenation on deformation. METHODS: Fetal echocardiography and velocity vector imaging were performed prospectively and serially in 48 fetuses with a small aortic isthmus and 48 gestation age-matched normal fetuses. Fetuses with a small aortic isthmus were randomly divided into two groups: one group with and the other group without maternal supplemental oxygen administration...
June 28, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28664601/left-atrial-strain-predicts-hemodynamic-parameters-in-cardiovascular-patients
#19
Bernd Hewing, Lena Theres, Sebastian Spethmann, Karl Stangl, Henryk Dreger, Fabian Knebel
BACKGROUND: We aimed to evaluate the predictive value of left atrial (LA) reservoir, conduit, and contractile function parameters as assessed by speckle tracking echocardiography (STE) for invasively measured hemodynamic parameters in a patient cohort with myocardial and valvular diseases. METHODS: Sixty-nine patients undergoing invasive hemodynamic assessment were enrolled into the study. Invasive hemodynamic parameters were obtained by left and right heart catheterization...
June 29, 2017: Echocardiography
https://www.readbyqxmd.com/read/28664478/the-integrated-value-of-sst2-and-global-longitudinal-strain-in-the-early-stratification-of-patients-with-severe-aortic-valve-stenosis-a-translational-imaging-approach
#20
Iacopo Fabiani, Lorenzo Conte, Nicola Riccardo Pugliese, Enrico Calogero, Valentina Barletta, Rossella Di Stefano, Tatiana Santoni, Cristian Scatena, Uberto Bortolotti, Antonio Giuseppe Naccarato, Anna Sonia Petronio, Vitantonio Di Bello
Aortic valve stenosis (AVS) is associated with significant myocardial fibrosis (MF). Global longitudinal strain (GLS) is a sensible indicator of systolic dysfunction. ST2 is a member of the interleukin (IL)-1 receptor family and a modulator of hypertrophic and fibrotic responses. We aimed at assessing: (a) the association between adverse LV remodeling, LV functional parameters (including GLS) and sST2 level. (b) The association between MF (detected by endo-myocardial biopsy) and sST2 in patients with AVS undergoing surgical valve replacement...
June 29, 2017: International Journal of Cardiovascular Imaging
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