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Strain echo

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https://www.readbyqxmd.com/read/29857954/computed-tomography-for-strain-imaging-behind-the-echo-eight-ball
#1
EDITORIAL
Rebecca T Hahn
No abstract text is available yet for this article.
May 9, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29844146/activin-a-and-late-postpartum-cardiac-dysfunction-among-women-with-hypertensive-disorders-of-pregnancy
#2
Sajid Shahul, Hadi Ramadan, Junaid Nizamuddin, Ariel Mueller, Vijal Patel, John Dreixler, Avery Tung, Roberto M Lang, Lynn Weinert, Rabab Nasim, Sireesha Chinthala, Sarosh Rana
Women with hypertensive disorders of pregnancy have an increased risk of subsequent heart failure and cardiovascular disease when compared with women with normotensive pregnancies. Although the mechanisms underlying these findings are unclear, elevated levels of the biomarker activin A are associated with myocardial dysfunction and may have predictive value. We hypothesized that elevated levels of antepartum activin A levels would correlate with postpartum cardiac dysfunction in women with hypertensive disorders of pregnancy...
May 29, 2018: Hypertension
https://www.readbyqxmd.com/read/29808387/findings-on-3d-speckle-tracking-echocardiography-in-asymptomatic-methamphetamine-abusers
#3
Li-Juan Zhang, Ke-Qi Chen, Yun-Yan Shi, Xiao-Ling Qiao, Lian-You Wang, Xiao-Zhi Zheng
To detect potential cardiac abnormalities in asymptomatic methamphetamine abusers using three-dimensional speckle tracking echocardiography (3D STE). Fifty-three male methamphetamine abusers, free of cardiac symptoms/signs, were enrolled in this study. A control group of 53 age-matched male normal subjects was studied for comparison. Standard 3D, flow and tissue Doppler echo with measurements of left ventricular end-diastolic volume (LVEDV), end-systolic volume (LVESV), ejection fraction (LVEF), the ratio of the early to late diastolic transmitral filling velocity (E/A), the ratio of the early diastolic transmitral filling velocity to the early diastolic septal tissue velocity (E/E') and 3D STE with measurements of global area strain (GAS), global longitudinal strain (GLS), global circumferential strain (GCS) and global radial strain (GRS) were performed, respectively...
May 28, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29789916/two-dimensional-speckle-tracking-echocardiography-derived-strain-measurements-in-survivors-of-childhood-cancer-on-angiotensin-converting-enzyme-inhibition-or-receptor-blockade
#4
Jamie K Harrington, Marc E Richmond, Arielle W Fein, Serge Kobsa, Prakash Satwani, Amee Shah
Speckle tracking echocardiography (STE)-derived strain indices are believed to detect early cardiac dysfunction in survivors of childhood cancer and have potential to identify patients who may benefit from early heart failure treatment. However, effects of heart failure treatment on STE-derived strain measurements in this population are unknown. The aim of this study was to assess STE-derived strain measurements in survivors of childhood cancer treated with angiotensin converting enzyme inhibition or receptor blockade (ACEi/ARB)...
May 22, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29778859/diagnosis-of-nonischemic-stage-b-heart-failure-in-type-2-diabetes-mellitus-optimal-parameters-for-prediction-of-heart-failure
#5
Ying Wang, Hong Yang, Quan Huynh, Mark Nolan, Kazuaki Negishi, Thomas H Marwick
OBJECTIVES: This study sought to identify whether impaired global longitudinal strain (GLS), diastolic dysfunction (DD), or left atrial enlargement (LAE) should be added to stage B heart failure (SBHF) criteria in asymptomatic patients with type 2 diabetes mellitus. BACKGROUND: SBHF is a precursor to clinical heart failure (HF), and its recognition justifies initiation of cardioprotective therapy. However, original definitions of SBHF were based on LV hypertrophy and impaired ejection fraction...
May 11, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29777281/right-ventricular-systolic-function-parameters-in-hypoplastic-left-heart-syndrome
#6
S Javed Zaidi, Jamie Penk, Vivian W Cui, Supaluck Kanjanauthai, David A Roberson
Assessment of the systolic function of the right ventricle (RV) in patients with hypoplastic left heart syndrome (HLHS) is important. The asymmetric shape and heavy trabeculations make accurate assessment of RV systolic function challenging. Novel measures of RV function could be helpful in distinguishing reduced versus preserved function in HLHS and may also be worse in HLHS with preserved function compared to normal controls. These novel methods offer promise, but research and clinical applicability is hindered as no cut-off values for normal function have been established...
May 18, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29754921/global-longitudinal-strain-corrected-by-rr-interval-is-a-superior-echocardiographic-predictor-of-outcome-in-patients-with-atrial-fibrillation
#7
Maria Dons, Jan Skov Jensen, Flemming Javier Olsen, Martina Chantal de Knegt, Thomas Fritz-Hansen, Ali Vazir, Tor Biering-Sørensen
BACKGROUND: Echocardiographic assessment of systolic and diastolic function during atrial fibrillation (AF) is challenging. This study evaluates the prognostic value of strain in patients with AF and suggests a novel approach on how to take into account the varying heart cycle lengths in AF. METHODS: Echocardiograms from 204 patients with AF during examination were analyzed offline. Patients with known heart failure (HF) were excluded. Peak global longitudinal strain (GLS) was averaged from 18 myocardial segments...
July 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29753023/reduced-left-ventricular-mechanical-dispersion-in-heart-failure-patients-undergoing-cardiac-resynchronisation-therapy-is-associated-with-superior-long-term-outcome
#8
Pieter van der Bijl, Mand Jh Khidir, Melissa Leung, Dilek Yilmaz, Bart Mertens, Nina Ajmone Marsan, Victoria Delgado, Jeroen J Bax
BACKGROUND: In heart failure (HF) patients, left ventricular mechanical dispersion (LVMD) reflects heterogeneous mechanical activation of the left ventricle. In HF patients, LVMD can be reduced after CRT. Whether lesser LVMD is associated with improved outcome is unknown. OBJECTIVE: To relate LVMD to long-term prognosis in a large cohort of HF patients after 6 months of cardiac resynchronization therapy (CRT). METHODS: Clinical, echocardiographic and ventricular arrhythmia (VA) data were analyzed from an ongoing registry of HF recipients of CRT...
May 9, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29746871/discrete-typing-units-of-trypanosoma-cruzi-detected-by-real-time-pcr-in-chilean-patients-with-chronic-chagas-cardiomyopathy
#9
Catalina Muñoz-San Martín, Inés Zulantay, Miguel Saavedra, Cristián Fuentealba, Gabriela Muñoz, Werner Apt
Chagas disease is a major public health problem in Latin America and has spread to other countries due to immigration of infected persons. 10-30% of patients with chronic Chagas disease will develop cardiomyopathy. Chagas cardiomyopathy is the worst form of the disease, due to its high morbidity and mortality. Because of its prognostic value and adequate medical monitoring, it is very important to identify infected people who could develop Chagas cardiomyopathy. The aim of this study was to determine if discrete typing units (DTUs) of Trypanosoma cruzi are related to the presence of heart disease in patients with chronic Chagas disease...
May 7, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29733526/the-importance-of-qualitative-and-quantitative-regional-wall-motion-abnormality-assessment-at-rest-in-pediatric-coronary-allograft-vasculopathy
#10
Nathalie Dedieu, Miguel Silva Vieira, Matthew Fenton, James Wong, Rene Botnar, Michael Burch, Gerald Greil, Tarique Hussain
CAV remains one of the main limiting factors for survival in children after heart transplantation. In this study, we explored the incremental value of routine CMR for evaluation and detection of CAV using qualitative and quantitative analysis of regional and global myocardial function and strain. This was a prospective imaging biomarker validation trial. Twenty-two patients (11 male), aged between 10 and 17 years (median 14 years) post-heart transplantation, were prospectively enrolled and underwent CMR in addition to their biennial review workup with Echo, angiography, and IVUS...
May 7, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29700783/modeling-right-ventricle-failure-after-continuous-flow-left-ventricular-assist-device-a-biventricular-finite-element-and-lumped-parameter-analysis
#11
Francesco Scardulla, Valentina Agnese, Giuseppe Romano, Gabriele Di Gesaro, Sergio Sciacca, Diego Bellavia, Francesco Clemenza, Michele Pilato, Salvatore Pasta
The risk of right ventricle (RV) failure remains a major contraindication for continuous-flow left ventricular assist device (CF-LVAD) implantation in patients with heart failure. It is therefore critical to identify the patients who will benefit from early intervention to avoid adverse outcomes. We sought to advance the computational modeling description of the mechanisms underlying RV failure in LVAD-supported patients. RV failure was studied by computational modeling of hemodynamic and cardiac mechanics using lumped-parameter and biventricular finite element (FE) analysis...
April 26, 2018: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/29700129/regional-myocardial-perfusion-disturbance-in-experimental-chronic-chagas-cardiomyopathy
#12
Luciano F L Oliveira, James T Thackeray, José A Marin Neto, Minna M D Romano, Eduardo E V Carvalho, Jorge Mejia, Denise M Tanaka, Grace K Silva, Douglas R Abdalla, Carlos Malamut, Frank M Bengel, Maria L Higuchi, André Schmidt, Edécio Cunha-Neto, Marcus V Simões
Background: Altered myocardial perfusion is a common finding in chronic Chagas cardiomyopathy (CCC), but its underlying histologic changes have not been elucidated. We investigated the occurrence of myocardial perfusion defects (MPD) and the correlated regional changes to histology in an experimental model of CCC in hamsters. Methods: Female Syrian hamsters ( n = 34) were infected with 3.5x104 to 105 trypomastigote forms of T. cruzi Y-strain and 6 to 10 months afterwards were submitted to in vivo imaging including: rest 99m Tc-sestamibi SPECT imaging, segmental and global left ventricular (LV) function assessment by using 2D-echocardiogram, and 18 F-FDG PET for evaluation of myocardial viability...
April 26, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29696586/echo-and-the-failure-of-knowing-in-judith-fox-s-photographic-project-i-still-do-loving-and-living-with-alzheimer-s
#13
Agnese Sile
In relationships 'I' and 'you' become 'we'; despite individual differences, couples obtain an interdependent identity due to their shared interactions. During a serious illness, biological and biographical disruptions can put any reciprocal relationship under strain. Through intermedial analysis of Judith Fox's photographic project, I Still Do: Loving and Living with Alzheimer's (2009), I will explore ways the couple make sense of illness, how illness is communicated through text and image and also to identify the limits of representation...
April 26, 2018: Journal of Medical Humanities
https://www.readbyqxmd.com/read/29691224/echo-and-heart-failure-when-do-people-need-an-echo-and-when-do-they-need-natriuretic-peptides
#14
REVIEW
Daniel Modin, Ditte Madsen Andersen, Tor Biering-Sørensen
Heart failure (HF) is a threat to public health. Heterogeneities in aetiology and phenotype complicate the diagnosis and management of HF. This is especially true when considering HF with preserved ejection fraction (HFpEF), which makes up 50% of HF cases. Natriuretic peptides may aid in establishing a working diagnosis in patients suspected of HF, but echocardiography remains the optimal choice for diagnosing HF. Echocardiography provides important prognostic information in both HF with reduced ejection fraction (HFrEF) and HFpEF...
June 2018: Echo Research and Practice
https://www.readbyqxmd.com/read/29685590/visualizing-angle-independent-principal-strains-in-the-longitudinal-view-of-the-carotid-artery-phantom-and-in-vivo-evaluation
#15
Rohit Nayak, Giovanni Schifitto, Marvin M Doyley
Non-invasive vascular elastography can evaluate the stiffness of the carotid artery by visualizing the vascular strain distribution. Axial strain estimates of the longitudinal cross section of the carotid artery are sensitive to the angle between the artery and the transducer. Anatomical variations in branching and arching of the carotid artery can affect the assessment of arterial stiffness. In this study, we hypothesized that principal strain elastograms computed using compounded plane wave imaging can reliably visualize the strain distribution in the carotid artery, independent of the transducer angle...
July 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29685020/ability-of-computed-tomography-to-predict-right-heart-strain-on-an-echocardiogram-in-patients-with-acute-pulmonary-embolus
#16
A Shams, J Hung, A Bahl
Patients with submassive pulmonary embolism (PE) resulting in right heart strain (RHS) have an increased risk of mortality compared to those with a preserved right ventricular function. This study aimed to investigate the predictive value of computed tomography pulmonary angiogram (CTPA) findings of right heart strain in patients with computed tomography (CT)-proven PE for the diagnosis of right heart strain by echocardiogram (ECHO). The institutional review board (IRB) approved retrospective chart review of the adult emergency department patients diagnosed with an acute PE between 2012 and 2016...
March 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29680337/t1-mapping-by-cardiac-magnetic-resonance-and-multidimensional-speckle-tracking-strain-by-echocardiography-for-the-detection-of-acute-cellular-rejection-in-cardiac-allograft-recipients
#17
Leyla Elif Sade, Tuncay Hazirolan, Hatice Kozan, Handan Ozdemir, Mutlu Hayran, Serpil Eroglu, Bahar Pirat, Atilla Sezgin, Haldun Muderrisoglu
OBJECTIVES: The aim of this study was to test the hypothesis that echocardiographic strain imaging, by tracking subtle alterations in myocardial function, and cardiac magnetic resonance T1 mapping, by quantifying tissue properties, are useful and complement each other to detect acute cellular rejection in heart transplant recipients. BACKGROUND: Noninvasive alternatives to endomyocardial biopsy are highly desirable to monitor acute cellular rejection. METHODS: Surveillance endomyocardial biopsies, catheterizations, and echocardiograms performed serially according to institutional protocol since transplantation were retrospectively reviewed...
April 14, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29678322/measurement-of-wall-shear-stress-exerted-by-flowing-blood-in-the-human-carotid-artery-ultrasound-doppler-velocimetry-and-echo-particle-image-velocimetry
#18
Phillip E Gates, Arati Gurung, Luciano Mazzaro, Kuni Aizawa, Salim Elyas, William D Strain, Angela C Shore, Robin Shandas
Vascular endothelial cells lining the arteries are sensitive to wall shear stress (WSS) exerted by flowing blood. An important component of the pathophysiology of vascular diseases, WSS is commonly estimated by centerline ultrasound Doppler velocimetry (UDV). However, the accuracy of this method is uncertain. We have previously validated the use of a novel, ultrasound-based, particle image velocimetry technique (echo PIV) to compute 2-D velocity vector fields, which can easily be converted into WSS data. We compared WSS data derived from UDV and echo PIV in the common carotid artery of 27 healthy participants...
July 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29669563/a-comparison-of-both-dense-and-feature-tracking-techniques-with-tagging-for-the-cardiovascular-magnetic-resonance-assessment-of-myocardial-strain
#19
J Jane Cao, Nora Ngai, Lynette Duncanson, Joshua Cheng, Kathleen Gliganic, Qizhi Chen
BACKGROUND: Myocardial strain is increasingly recognized as an important assessment for myocardial function. In addition, it also improves outcome prediction. However, there is lack of standardization in strain evaluation by cardiovascular magnetic resonance (CMR). In this study we compared strain values using multiple techniques and multiple vendor products. METHODS: Prospectively recruited patients with cardiomyopathy of diverse etiology (N = 77) and healthy controls (N = 10) underwent CMR on a 1...
April 19, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29668926/right-atrial-and-ventricular-echocardiographic-strain-analysis-predicts-requirement-for-right-ventricular-support-after-left-ventricular-assist-device-implantation
#20
Dafni Charisopoulou, Nicholas R Banner, Camil Demetrescu, Andre R Simon, Shelley Rahman Haley
Aims: The need for right ventricular assist device (RVAD) support after left ventricular assist device (LVAD) therapy is associated with increased morbidity and mortality. We used 2D echocardiographic strain analysis to assess right atrial (RA) and right ventricular (RV) mechanics and predict the need for RV mechanical support after LVAD implantation. Methods and results: Seventy advanced chronic heart failure (ACHF) patients [59 male, age 47 ± 12 years, 79% dilated cardiomyopathy, left ventricular ejection fraction 23 ± 10%] received continuous-flow LVAD as a bridge to transplantation over an 18 month period...
April 13, 2018: European Heart Journal Cardiovascular Imaging
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