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https://www.readbyqxmd.com/read/28219811/stress-echocardiography-in-patients-who-experienced-mechanical-ventilation-weaning-failure
#1
Manuel Ruiz-Bailén, Jesús Cobo-Molinos, Ana Castillo-Rivera, María Dolores Pola-Gallego-de-Guzmán, Antonio Cárdenas-Cruz, Antonio Martínez-Amat, María Sevilla-Martínez, Clara Hernández-Caballero
INTRODUCTION: Critically ill patients may suffer varying degrees of temporary myocardial dysfunction during respiratory weaning that could play an important role in weaning failure. OBJECTIVES: In this study, we tried to assess the existence of temporary diastolic dysfunction during respiratory weaning. METHODS: Inclusion period is from 2006 to 2015. In this study, we included 181 ventilated patients with cardiogenic shock that were being weaned from mechanical ventilation...
January 18, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28219155/-genotype-distribution-of-human-enteroviruses-isolated-from-swage-in-shanghai-during-year-2013-2014
#2
Y Y Li, J Lu, X Z Wang, Y Y Yang, J Fei, L P Zhang, Z Li, C S Li, Y Zuo
Objective: To explore the time and genotype distribution of human enterovirus (HEV) isolated from sewage in Shanghai in 2013-2014. Methods: One sewage sample each was collected from two local sewage plants located in Minhang District and Jiading District on the same day at the day 24-28 of every month from 2013 to 2014. Each sample weighed 1 L. The specimens were concentrated by anionic membrane absorption, eluted with beef extract solution, and then used to inoculate RD, HEp-2, and L20B cell lines. A total of 249 enterovirus strains were isolated from sewage samples during the study period, including 185 non-polio enterovirus (NPEV) and 64 poliovirus (PV) strains, which were identified as vaccine strains...
February 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28210715/feasibility-and-reproducibility-of-two-dimensional-wall-motion-tracking-wmt-in-fetal-echocardiography
#3
Christian Enzensberger, Friederike Achterberg, Jan Degenhardt, Aline Wolter, Oliver Graupner, Johannes Herrmann, Roland Axt-Fliedner
Objective The primary objective of this study was to determine the feasibility and reproducibility of 2-dimensional speckle tracking imaging based on the wall motion tracking (WMT) technique in fetal echocardiography. The secondary objective was to compare left and right ventricular global and segmental longitudinal peak strain values. Methods A prospective cross-sectional study was performed. Global and segmental longitudinal peak strain values of the left ventricle (LV) and right ventricle (RV) were assessed prospectively...
February 2017: Ultrasound International Open
https://www.readbyqxmd.com/read/28208915/an-unusual-occurrence-of-methicillin-resistant-staphylococcal-endocarditis-with-vancomycin-creep-phenomenon-a-therapeutic-challenge
#4
S Sneha, Shanthan Venishetty, Shubha Seshadri, M Sudhakar Rao, Chiranjay Mukhopadhyay
Infective endocarditis by Methicillin Resistant Staphylococcus aureus (MRSA) bacteraemia is a common association and carries a high mortality. However, rising Minimum Inhibitory Concentrations (MICs) for vancomycin amongst MRSA strains is an emerging threat which carries poor prognosis and higher mortality. Here, we report a case of 41-year-old young non-addict gentleman presenting with fever of 3 days duration following recovery from an acute kidney injury necessitating haemodialysis. Systemic examination revealed signs of mitral regurgitation and left sided cerebellar signs...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28206705/erysipelothrix-rhusiopathiae-bloodstream-infection-a-22-year-experience-at-mayo-clinic-minnesota
#5
E M Tan, J R Marcelin, N Adeel, R J Lewis, M J Enzler, P K Tosh
Erysipelothrix rhusiopathiae is a facultatively anaerobic Gram-positive bacillus found mostly in swine, fish and sheep. E. rhusiopathiae classically causes cutaneous eruptions in butchers, fish handlers and veterinarians. Based solely on case reports, 90% of E. rhusiopathiae bloodstream infections (BSI) have been associated with infective endocarditis (IE). To assess the true frequency of IE in E. rhusiopathiae BSI as well as other clinical associations, we performed a retrospective cohort analysis of E...
February 16, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28166493/a-gpu-accelerated-3d-coupled-sub-sample-estimation-algorithm-for-volumetric-breast-strain-elastography
#6
Bo Peng, Yuqi Wang, Timothy J Hall, Jingfeng Jiang
Our primary objective of this work was to extend a previously published 2D coupled sub-sample tracking algorithm for 3D speckle tracking in the framework of ultrasound breast strain elastography. In order to overcome heavy computational cost, we investigated the use of a graphic processing unit (GPU) to accelerate the 3D coupled sub-sample speckle tracking method. The performance of the proposed GPU implementation was tested using a tissue-mimicking (TM) phantom and in vivo breast ultrasound data. The performance of this 3D sub-sample tracking algorithm was compared with the conventional 3D quadratic subsample estimation algorithm...
January 31, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28144259/variability-of-longitudinal-strain-in-left-ventricular-segments-supplied-by-non-stenosed-coronary-artery-insights-from-speckle-tracking-analysis-of-dobutamine-stress-echocardiograms-in-patients-with-high-coronary-risk-profile
#7
Karina Wierzbowska-Drabik, Michał Plewka, Jarosław D Kasprzak
INTRODUCTION: Although global deformation parameters have been increasingly used for myocardial function analysis, there are sparse data concerning segmental deformation of the left ventricle (LV). Moreover, some studies suggest heterogeneity of strain among LV segments, which may be especially significant during stress echocardiography. We assessed quantitatively regional LV function in the setting of dobutamine stress echocardiography (DSE), to examine differences of longitudinal strain between basal, mid and apical LV segments and to compare variability of regional deformation between rest and the peak stage of DSE...
February 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28130566/-stress-echocardiography-and-its-central-role-in-cardiac-diagnostics
#8
R Leischik, B Dworrak, T Cremer, S Amirie, H Littwitz
Stress echocardiography (SE) has an established central role as a diagnostic tool in cardiology. It is not only an established method for the diagnostic and prognostic stratification of patients with coronary artery disease but also shows an emerging value for assessment of cardiac function beyond coronary artery disease. The enormous conceptual technological development of ultrasound technology (Doppler, digitizing, tissue Doppler imaging, strain technology, 3‑D-echo and new ultrasound contrast agents) has led to applications of SE in almost all diagnostic fields of cardiology...
January 27, 2017: Herz
https://www.readbyqxmd.com/read/28123764/cardiac-mechanics-and-dysfunction-with-anthracyclines-in-the-community-results-from-the-predict-study
#9
Hari K Narayan, Wei Wei, Ziding Feng, Daniel Lenihan, Ted Plappert, Virginia Englefield, Michael Fisch, Bonnie Ky
BACKGROUND: Our objective was to determine the relevance of changes in myocardial mechanics in diagnosing and predicting cancer therapeutics-related cardiac dysfunction (CTRCD) in a community-based population treated with anthracyclines. METHODS: Quantitative measures of cardiac mechanics were derived from 493 echocardiograms in 165 participants enrolled in the PREDICT study (A Multicenter Study in Patients Undergoing AnthRacycline-Based Chemotherapy to Assess the Effectiveness of Using Biomarkers to Detect and Identify Cardiotoxicity and Describe Treatment)...
2017: Open Heart
https://www.readbyqxmd.com/read/28120156/investigating-the-value-of-right-heart-echocardiographic-metrics-for-detection-of-pulmonary-hypertension-in-patients-with-advanced-lung-disease
#10
Myriam Amsallem, David Boulate, Zoe Kooreman, Roham T Zamanian, Guillaume Fadel, Ingela Schnittger, Elie Fadel, Michael V McConnell, Gundeep Dhillon, Olaf Mercier, François Haddad
This study determined whether novel right heart echocardiography metrics help to detect pulmonary hypertension (PH) in patients with advanced lung disease (ALD). We reviewed echocardiography and catheterization data of 192 patients from the Stanford ALD registry and echocardiograms of 50 healthy controls. Accuracy of echocardiographic right heart metrics to detect PH was assessed using logistic regression and area under the ROC curves (AUC) analysis. Patients were divided into a derivation (n = 92) and validation cohort (n = 100)...
January 24, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28104715/detailed-echocardiographic-phenotyping-in-breast-cancer-patients-associations-with-ejection-fraction-decline-recovery-and-heart-failure-symptoms-over-3-years-of-followup
#11
Hari K Narayan, Brian S Finkelman, Benjamin French, Theodore Plappert, David Hyman, Amanda M Smith, Kenneth B Margulies, Bonnie Ky
BACKGROUND: -Cardiovascular disease in breast cancer patients is of growing concern. The longitudinal effects of commonly used therapies, including doxorubicin and trastuzumab, on cardiac remodeling and function remain unknown in this population. We sought to define the changes in echocardiographic parameters of structure, function, and ventricular-arterial (VA) coupling, and their associations with left ventricular ejection fraction (LVEF) and heart failure (HF) symptoms. METHODS: -In a longitudinal prospective cohort study of 277 breast cancer participants receiving doxorubicin (Dox), trastuzumab (Tras), or both (Dox+Tras), we obtained 1,249 echocardiograms over a median followup of 2...
January 19, 2017: Circulation
https://www.readbyqxmd.com/read/28094132/cardiovascular-maladaptation-to-exercise-in-young-hypertensive-patients
#12
Maurizio Cusmà Piccione, Concetta Zito, Bijoy Khandheria, Antonio Madaffari, Alessandra Oteri, Gabriella Falanga, Domenica Donato, Myriam D'Angelo, Maria Ludovica Carerj, Gianluca Di Bella, Egidio Imbalzano, Pietro Pugliatti, Scipione Carerj
BACKGROUND: Impairment of the adaptive mechanisms that increase cardiac output during exercise can translate to a reduced functional capacity. We investigated cardiovascular adaptation to exertion in asymptomatic hypertensive patients, aiming to identify the early signs of cardiac and vascular dysfunction. METHODS AND RESULTS: We enrolled 54 subjects: 30 patients (45.1±11.9years, 19 males) and 24 age-matched healthy controls (44.4±9.6years, 14 males). Speckle-tracking echocardiography (STE) and echo-tracking were performed at rest and during exertion to assess myocardial deformation and arterial stiffness...
January 4, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28070903/myocardial-deformation-in-pediatric-patients-with-mucopolysaccharidoses-a-two-dimensional-speckle-tracking-echocardiography-study
#13
Francesco Borgia, Enrica Pezzullo, Vincenzo Schiano Lomoriello, Regina Sorrentino, Francesco Lo Iudice, Sara Cocozza, Roberto Della Casa, Giancarlo Parenti, Pietro Strisciuglio, Bruno Trimarco, Maurizio Galderisi
BACKGROUND: Mucopolysaccharidoses (MPS) are inherited lysosomal storage disorders caused by deficiency of required glycosaminoglycans breakdown enzymes, inducing cardiac involvement. Little is known about myocardial deformation involvement in MPS. Our aim was to assess biventricular structure and function in asymptomatic children with MPS using standard echo Doppler and 2D speckle tracking (STE). METHODS: Fifteen MPS children (one type I, six type II, three type III A, one III B, three IV A, one VI), asymptomatic for cardiac symptoms, and 15 age and sex-matched healthy controls underwent echo Doppler and STE...
January 10, 2017: Echocardiography
https://www.readbyqxmd.com/read/28067978/imaging-left-ventricular-mechanical-activation-in-heart-failure-patients-using-cine-dense-mri-validation-and-implications-for-cardiac-resynchronization-therapy
#14
Daniel A Auger, Kenneth C Bilchick, Jorge A Gonzalez, Sophia X Cui, Jeffrey W Holmes, Christopher M Kramer, Michael Salerno, Frederick H Epstein
PURPOSE: To image late mechanical activation and identify effective left-ventricular (LV) pacing sites for cardiac resynchronization therapy (CRT). There is variability in defining mechanical activation time, with some studies using the time to peak strain (TPS) and some using the time to the onset of circumferential shortening (TOS). We developed improved methods for imaging mechanical activation and evaluated them in heart failure (HF) patients undergoing CRT. MATERIALS AND METHODS: We applied active contours to cine displacement encoding with stimulated echoes (DENSE) strain images to detect TOS...
January 9, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28060042/hiv-infected-children-in-malawi-have-decreased-performance-on-the-6-minute-walk-test-with-preserved-cardiac-mechanics-regardless-of-antiretroviral-treatment-status
#15
Amy Sims Sanyahumbi, Mina Hosseinipour, Danielle Guffey, Irving Hoffman, Peter N Kazembe, Madeline McCrary, Charles G Minard, Charles Van der Horst, Craig A Sable
INTRODUCTION: We aimed to (1) determine if cardiac disease can be detected in HIV-infected children by strain imaging, and (2) to evaluate differences in exercise performance between HIVinfected on and not yet on antiretroviral therapy (ART) and in HIV-uninfected children by 6- minute walk tests (6MWT) METHODS:: This cross-sectional study evaluated cardiac function by echocardiogram and exercise performance by 6MWT in HIV-infected and uninfected children ages 4 to 18 years in Lilongwe, Malawi...
January 3, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28055859/right-ventricular-strain-torsion-and-dyssynchrony-in-healthy-subjects-using-3d-spiral-cine-dense-magnetic-resonance-imaging
#16
Jonathan Suever, Gregory Wehner, Linyuan Jing, David Powell, Sean Hamlet, Jonathan Grabau, Dimitri Mojsejenko, Kristin Andres, Christopher Haggerty, Brandon Fornwalt
Mechanics of the left ventricle (LV) are important indicators of cardiac function. The role of right ventricular (RV) mechanics is largely unknown due to the technical limitations of imaging its thin wall and complex geometry and motion. By combining 3D Displacement Encoding with Stimulated Echoes (DENSE) with a post-processing pipeline that includes a local coordinate system, it is possible to quantify RV strain, torsion, and synchrony. In this study, we sought to characterize RV mechanics in 50 healthy individuals and compare these values to their LV counterparts...
December 29, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28054208/is-2d-speckle-tracking-echocardiography-useful-for-detecting-and-monitoring-myocardial-dysfunction-in-adult-m-3243a-g-carriers-a-retrospective-pilot-study
#17
S Koene, J Timmermans, G Weijers, P de Laat, C L de Korte, J A M Smeitink, M C H Janssen, L Kapusta
OBJECTIVES: Cardiomyopathy is a common complication of mitochondrial disorders, associated with increased mortality. Two dimensional speckle tracking echocardiography (2DSTE) can be used to quantify myocardial deformation. Here, we aimed to determine the usefulness of 2DSTE in detecting and monitoring subtle changes in myocardial dysfunction in carriers of the 3243A>G mutation in mitochondrial DNA. METHODS: In this retrospective pilot study, 30 symptomatic and asymptomatic carriers of the mitochondrial 3243A>G mutation of whom two subsequent echocardiograms were available were included...
January 4, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28048367/th-a-207b-00-shear-wave-imaging-and-a-qiba-us-biomarker-update
#18
Paul Carson
: Imaging of tissue elastic properties is a relatively new and powerful approach to one of the oldest and most important diagnostic tools. Imaging of shear wave speed with ultrasound is has been added to most high-end ultrasound systems. Understanding this exciting imaging mode aiding its most effective use in medicine can be a rewarding effort for medical physicists and other medical imaging and treatment professionals. Assuring consistent, quantitative measurements across the many ultrasound systems in a typical imaging department will constitute a major step toward realizing the great potential of this technique and other quantitative imaging...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047721/th-a-207b-01-basics-and-current-implementations-of-ultrasound-imaging-of-shear-wave-speed-and-elasticity
#19
S Chen
: Imaging of tissue elastic properties is a relatively new and powerful approach to one of the oldest and most important diagnostic tools. Imaging of shear wave speed with ultrasound is has been added to most high-end ultrasound systems. Understanding this exciting imaging mode aiding its most effective use in medicine can be a rewarding effort for medical physicists and other medical imaging and treatment professionals. Assuring consistent, quantitative measurements across the many ultrasound systems in a typical imaging department will constitute a major step toward realizing the great potential of this technique and other quantitative imaging...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047072/th-a-207b-02-qiba-ultrasound-elasticity-imaging-system-biomarker-qualification-and-user-testing-of-systems
#20
B Garra
: Imaging of tissue elastic properties is a relatively new and powerful approach to one of the oldest and most important diagnostic tools. Imaging of shear wave speed with ultrasound is has been added to most high-end ultrasound systems. Understanding this exciting imaging mode aiding its most effective use in medicine can be a rewarding effort for medical physicists and other medical imaging and treatment professionals. Assuring consistent, quantitative measurements across the many ultrasound systems in a typical imaging department will constitute a major step toward realizing the great potential of this technique and other quantitative imaging...
June 2016: Medical Physics
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