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Speckle tracking

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https://www.readbyqxmd.com/read/29150155/the-association-of-functional-capacity-with-right-atrial-deformation-in-patients-with-pulmonary-arterial-hypertension-a-study-with-two-dimensional-speckle-tracking
#1
Weiwei Liu, Yueheng Wang, Jinling Zhou, Hui Bai, Feng Wang, Ju Wang
BACKGROUND: The purpose of this study was to assess right atrial (RA) myocardial mechanics in pulmonary hypertension (PH) patients using two-dimensional speckle tracking (2D-STE), and define the relationship between RA function and exercise capacity in PH patients. METHODS: Thirty-eight consecutive PH patients were studied and compared with a control group of 25 healthy volunteers. Peak atrial longitudinal strain (PALS), RA strain rate were measured in all subjects...
April 13, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29146482/impaired-left-atrial-strain-as-a-predictor-of-new-onset-atrial-fibrillation-after-aortic-valve-replacement-independently-of-left-atrial-size
#2
Guilherme Pessoa-Amorim, Jennifer Mancio, Luís Vouga, José Ribeiro, Vasco Gama, Nuno Bettencourt, Ricardo Fontes-Carvalho
INTRODUCTION AND OBJECTIVES: Left atrial dysfunction in aortic stenosis may precede atrial enlargement and predict the occurrence of atrial fibrillation (AF). To test this hypothesis, we assessed left atrial function and determined its impact on the incidence of AF after aortic valve replacement. METHODS: A total of 149 severe aortic stenosis patients (74±8.6 years, 51% men) with no prior AF were assessed using speckle-tracking echocardiography. Left atrial function was evaluated using peak atrial longitudinal strain (PALS), peak atrial contraction strain (PACS), and phasic left atrial volumes...
November 13, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/29142812/left-ventricle-relative-apical-sparing-in-cardiac-amyloidosis
#3
Marianna Nardozza, Elisabetta Chiodi, Donato Mele
Amyloidosis is a disease characterized by the extracellular deposition of the protein amyloid. It is a multiorgan disease, and cardiac involvement is not uncommon, generally in the form of a restrictive cardiomyopathy. Typical aspects of cardiac amyloidosis have been described at echocardiography and magnetic resonance imaging (MRI). In particular, the relative apical sparing at two-dimensional speckle-tracking echocardiography has been reported to be specific for cardiac amyloidosis. In our case, we report for the first time that this echocardiographic sign is related to lack of hyperenhancement at late gadolinium enhancement imaging in cardiac MRI...
October 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/29142809/is-left-atrial-function-affected-by-coronary-slow-flow-a-two-dimensional-speckle-tracking-echocardiographic-study
#4
Flora Fallah, Sima Narimani, Shima Yarmohammadi, Ali Hosseinsabet, Arash Jalali
Background: The coronary slow flow phenomenon (CSFP) is the slow passage of the angiographic contrast agent to the distal portion of the coronary artery in the absence of significant stenosis. We evaluated the left atrial (LA) function in patients with the CSFP using two-dimensional speckle-tracking echocardiography (2DSTE). Methods: The LA function was compared through 2DSTE between 36 patients with the CSFP and 36 participants with a normal coronary flow. The two groups were matched for age, sex, hypertension, diabetes mellitus, and the left ventricular function...
October 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/29138230/head-to-head-comparison-of-global-and-regional-two-dimensional-speckle-tracking-strain-versus-cardiac-magnetic-resonance-tagging-in-a-multicenter-validation-study
#5
Mihaela Silvia Amzulescu, Hélène Langet, Eric Saloux, Alain Manrique, Laurianne Boileau, Alisson Slimani, Pascal Allain, Clotilde Roy, Christophe de Meester, Agnès Pasquet, Mathieu De Craene, David Vancraeynest, Anne-Catherine Pouleur, Jean-Louis J Vanoverschelde, Bernhard L Gerber
BACKGROUND: Despite widespread use to characterize and refine prognosis, validation data of two-dimensional (2D) speckle tracking (2DST) echocardiography myocardial strain measurement remain scarce. METHODS AND RESULTS: Global and regional subendocardial peak-systolic Lagrangian longitudinal (LS) and circumferential strain (CS) by 2DST and 2D-tagged (2DTagg) cardiac magnetic resonance imaging were compared against sonomicrometry in a dynamic heart phantom and among each other in 136 patients included prospectively at 2 centers...
November 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29137850/the-importance-of-subclinical-left-ventricular-dysfunction-and-blood-pressure-pattern-in-asymptomatic-type-2-diabetic-patients-the-diagnostic-and-prognostic-significance-of-tissue-doppler-parameters-left-ventricular-global-longitudinal-strain-and-nighttime
#6
Angelina Stevanovic, Milica Dekleva
The primary aims of this study have been to explore the diagnostic and prognostic significance of Tissue Doppler parameters (TDI), global longitudinal strain (GLS), and blood pressure (BP) pattern in normotensive diabetic patients. METHODS: The study consisted of 121 diabetic patients and 41 healthy subjects. Conventional and TDI echocardiography were performed on all patients, including E/Em (ratio of diastolic velocities). GLS was derived from two-dimensional speckle-tracking. Ambulatory BP monitoring (ABPM) was obtained over 24h...
September 18, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29133200/histologic-and-hemodynamic-correlates-of-right-ventricular-function-in-a-pressure-overload-model-a-study-using-three-dimensional-speckle-tracking-echocardiography
#7
Yuman Li, Lei Li, Junwei Liu, Mengmei Li, Qing Lv, Jing Wang, Lin He, Mingxing Xie
The aim of our study was to assess the characterization of right ventricular (RV) deformation using three-dimensional (3D) speckle tracking echocardiography (STE) and association of 3D-STE indices with histologic and hemodynamic parameters in a chronic RV pressure overload animal model. Pulmonary artery banding (PAB) was used to induce RV pressure overload in seven beagles. 3D-STE, histologic and hemodynamic measurements were performed in PAB and sham-operated beagles 3 mo after PAB. RV longitudinal, radial and circumferential strain was measured from 3D-STE...
November 10, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29128888/two-dimensional-speckle-tracking-global-longitudinal-strain-in-high-sensitivity-troponin-negative-low-risk-patients-with-unstable-angina-a-resting-ischemia-test
#8
Patrícia Marques-Alves, Nuno Espírito-Santo, Rui Baptista, Rogério Teixeira, Rui Martins, Francisco Gonçalves, Mariano Pego
With the introduction of high-sensitivity troponin (hsTNI) assays, the clinical significance unstable angina (UA) has become uncertain. We hypothesized that impaired left ventricular (LV) two-dimensional speckle-tracking echocardiography (2D-STE)-derived peak global longitudinal strain (GLS) was able to exclude the presence of significant coronary artery disease (CAD) in UA patients without prior cardiovascular (CV) events and with a normal LV ejection fraction (LVEF). From a cohort of 200 patients admitted with UA, we selected 61 patients without prior CV events and with a normal LVEF; of these, 48 (79%) underwent invasive coronary angiography (ICA) and 24 (39%) had at least ≥ 1 significant stenosis...
November 11, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29119005/differences-in-left-ventricular-functional-adaptation-to-arterial-stiffness-and-neurohormonal-activation-in-patients-with-hypertension-a-study-with-two-dimensional-layer-specific-speckle-tracking-echocardiography
#9
Darae Kim, Chi Young Shim, Geu-Ru Hong, Sungha Park, InJeong Cho, Hyuk-Jae Chang, Jong-Won Ha, Namsik Chung
Background: Arterial stiffness increases pressure load to the left ventricle (LV), leading to LV hypertrophy and subendocardial ischemia. Neurohormones stimulate myocardial fibrosis and LV dysfunction. We aimed to explore the associations of arterial stiffness and plasma aldosterone with multi-directional, layer-specific LV, and left atrial (LA) mechanical function in hypertensive patients. Methods: Layer-specific LV global longitudinal strain (GLS-trans, GLS-endo, GLS-epi), global circumferential strain (GCS-trans, GCS-endo, GCS-epi), LV torsional parameters, and LA global longitudinal strain (LA GLS) were analyzed by two-dimensional speckle tracking echocardiography in 195 hypertensive patients (110 men, mean age 55 years)...
2017: Clinical Hypertension
https://www.readbyqxmd.com/read/29118359/visualization-and-quantification-of-injury-to-the-ciliated-epithelium-using-quantitative-flow-imaging-and-speckle-variance-optical-coherence-tomography
#10
Ute A Gamm, Brendan K Huang, Emily K Mis, Mustafa K Khokha, Michael A Choma
Mucociliary flow is an important defense mechanism in the lung to remove inhaled pathogens and pollutants. Disruption of ciliary flow can lead to respiratory infections. Multiple factors, from drugs to disease can cause an alteration in ciliary flow. However, less attention has been given to injury of the ciliated epithelium. In this study, we show how optical coherence tomography (OCT) can be used to investigate injury to the ciliated epithelium in a multi-contrast setting. We used particle tracking velocimetry (PTV-OCT) to investigate the cilia-driven flow field and 3D speckle variance imaging to investigate size and extent of injury caused to the skin of Xenopus embryos...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29116972/low-cardiac-output-syndrome-after-adult-cardiac-surgery-predictive-value-of-peak-systolic-global-longitudinal-strain
#11
Philippe Amabili, Sabeha Benbouchta, Laurence Roediger, Marc Senard, Marie Bernard Hubert, Anne-Françoise Donneau, Jean-François Brichant, Gregory A Hans
BACKGROUND: Peak systolic global longitudinal strain (GLS) is increasingly used to quantify left ventricular systolic function. The primary objective of this study was to assess whether GLS obtained during intraoperative transesophageal echocardiogram, performed before cardiopulmonary bypass, improves the prediction of postoperative low cardiac output syndrome (LCOS) after adult cardiac surgery. METHODS: GLS from 275 patients undergoing on-pump cardiac surgery was calculated retrospectively using two-dimensional- speckle tracking echocardiography (aCMQ module from Qlab software version 10...
November 7, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29116970/assessment-of-tricuspid-annular-motion-by-speckle-tracking-in-anesthetized-patients-using-transesophageal-echocardiography
#12
Tao Shen, Michael H Picard, Lanqi Hua, Sara M Burns, Michael N Andrawes
BACKGROUND: The perioperative assessment of right ventricular (RV) function remains a challenge. Tricuspid annular plane systolic excursion (TAPSE) using M-mode is a widely used measure of RV function. However, accurate alignment of the ultrasound beam with the direction of annular movement can be difficult with transesophageal echocardiography (TEE) to measure TAPSE, precluding effective use of M-mode to measure annular excursion. Tracking of specular reflectors in the myocardium may provide an angle-independent method to assess annular motion with TEE...
November 7, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29106754/right-heart-function-in-impaired-left-ventricular-diastolic-function-2d-speckle-tracking-echocardiography-based-and-doppler-tissue-imaging-based-analysis-of-right-atrial-and-ventricular-function
#13
Anna Brand, Marny Bathe, Sabine Oertelt-Prigione, Ute Seeland, Mirjam Rücke, Vera Regitz-Zagrosek, Karl Stangl, Fabian Knebel, Verena Stangl, Henryk Dreger
AIM: The aim of our study was to describe right atrial (RA) and right ventricular (RV) function, assessed by Doppler tissue imaging and 2D speckle tracking echocardiography (2DSTE), in women with signs of early impaired left ventricular diastolic function (DD). METHODS AND RESULTS: In a cross-sectional trial, standard parameters of diastolic and right heart function were investigated in 438 women of the Berlin Female Risk Evaluation (BEFRI) study. In a subset of women, average peak systolic RA strain (RAS), as well as the average peak systolic RV strain of the free wall (RVS free wall) and of all RV segments (average RV strain; RVS Avg), was analyzed using 2DSTE...
November 6, 2017: Echocardiography
https://www.readbyqxmd.com/read/29106752/subclinical-anthracycline-induced-cardiotoxicity-in-long-term-follow-up-of-asymptomatic-childhood-cancer-survivors-assessment-by-speckle-tracking-echocardiography
#14
Süha Çetin, Kadir Babaoğlu, Eviç Z Başar, Murat Deveci, Funda Çorapçıoğlu
OBJECTIVE: Survivors of childhood cancer treated with anthracyclines carry the risk for developing late-onset cardiotoxicity. The purpose of this study was to evaluate left ventricular (LV) function in this patient group and compare it with healthy controls by means of conventional and speckle tracking echocardiography (STE) after exposure to chemotherapy. MATERIAL AND METHODS: Conventional and STE were performed in 45 childhood cancer survivors (mean age 11 ± 4...
November 6, 2017: Echocardiography
https://www.readbyqxmd.com/read/29103855/right-ventricular-longitudinal-strain-in-left-ventricular-assist-device-surgery-a-retrospective-cohort-study
#15
Daniel R Beck, Lisa Foley, Jackson R Rowe, Angela F D Moss, Nathaen S Weitzel, T Brett Reece, David A Fullerton, Joseph C Cleveland, Karsten Bartels
OBJECTIVES: Right ventricular (RV) failure is common after left ventricular assist device (LVAD) surgery and is associated with higher mortality. Measurement of longitudinal RV strain using speckle-tracking technology is a novel approach to quantify RV function. The authors hypothesized that depressed peak longitudinal RV strain measured by intraoperative transesophageal echocardiography (TEE) examinations would be associated with adverse outcomes after LVAD surgery. DESIGN: Retrospective cohort study...
July 19, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29102595/interest-of-speckle-tracking-in-the-detection-of-cardiac-involvement-in-pregnant-women-with-hypertensive-disorder
#16
H Ajmi, D Abid, S Milouchi, D Louati, A Sghaier, D Choura, K Chaaben, L Abid, S Kammoun
INTRODUCTION: Pre-eclampsia is associated with many cardiovascular disorders present even in asymptomatic women. Several echocardiographic parameters are used to identify them. However, these parameters may be normal until late in the course of the disease process. Which justifies using new and more sensitive techniques. PURPOSE: We sought to test the hypothesis of subclinical cardiac involvement in such patients, based on speckle tracking, and to check its sensitivity compared to the usual methods...
October 23, 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29101521/impact-of-transducer-frequency-setting-on-speckle-tracking-measures
#17
Flemming Javier Olsen, Jesper Hastrup Svendsen, Lars Køber, Søren Højberg, Ketil Haugan, Jan Skov Jensen, Tor Biering-Sørensen
Speckle tracking echocardiography is an emerging technique, which is currently being included in clinical guidelines. We sought to investigate the impact of transducer frequency settings on speckle tracking derived measures. The study comprised of 22 subjects prospectively enrolled for a randomized controlled trial (LOOP-study, Clinicaltrials.gov:NCT02036450). Patients were above 70 years of age with increased risk of stroke, and had an echocardiogram performed, which included focused images of the left ventricle...
November 3, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29101180/reduced-longitudinal-contraction-is-associated-with-ischemic-mitral-regurgitation-after-posterior-mi
#18
Kiyotake Ishikawa, Shin Watanabe, Nadjib Hammoudi, Jaume Aguero, Olympia Bikou, Kenneth Fish, Roger J Hajjar
BACKGROUND: The role of left ventricular (LV) longitudinal contraction in ischemic mitral regurgitation (MR) remains unclear. We hypothesized that reduced longitudinal contraction disrupts normal mitral valve plane displacement during systole and leads to mitral valve tethering, thereby inducing ischemic MR. METHODS: Twenty-three Yorkshire pigs underwent induction of different-sized posterior myocardial infarction (MI) using a percutaneous approach. Incidence of MR and its association to LV longitudinal strain was examined using speckle-tracking echocardiography at one month post-MI to determine their relationship...
November 3, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29099830/disfunci%C3%A3-n-ventricular-subcl%C3%A3-nica-por-speckle-tracking-en-pacientes-adultos-con-coartaci%C3%A3-n-de-aorta
#19
Nilda Espinola-Zavaleta, José Carlos Rúan-Díaz, María Elena Soto, Nydia Ávila-Vanzzini, Guillermo Bracamontes-Castelo, Leonel Avendaño-Pérez
Objective: The aim of this study was to investigate the presence of early left ventricular (LV) systolic dysfunction in adult patients with aortic coarctation (AoCo) and systemic arterial hypertension (SAH) compared to systemic hypertensive patients without coarctation and healthy controls by speckle tracking. Methods: Sixty-one subjects were studied, who attended consecutively to external consultation. All were submitted to clinical history, resting electrocardiogram, conventional echocardiogram and with Speckle Tracking...
2017: Gaceta Médica de México
https://www.readbyqxmd.com/read/29094192/changes-in-bi-ventricular-function-after-hematopoietic-stem-cell-transplant-as-assessed-by-speckle-tracking-echocardiography
#20
Stuart Covi, Yaddanapudi Ravindranath, Ahmad Farooqi, Sureyya Savasan, Roland Chu, Sanjeev Aggarwal
Hematopoietic stem cell transplant (HSCT) is a therapeutic option for patients with sickle cell disease (SCD) and severe acquired aplastic anemia (SAA). HSCT may have beneficial effects on ventricular function in damaged myocardium. We hypothesized improvement in ventricular performance and pulmonary hypertension following HSCT with strain echocardiography in SCD and SAA. Echocardiographic strain and other standard functional data were obtained via retrospective cohort analysis of patients (n = 23) with SCD and SAA who underwent HSCT and were followed at a single center between 2000 and 2014...
November 1, 2017: Pediatric Cardiology
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