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Tissue doppler imaging

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https://www.readbyqxmd.com/read/29029074/multimodality-imaging-evaluation-of-chagas-disease-an-expert-consensus-of-brazilian-cardiovascular-imaging-department-dic-and-the-european-association-of-cardiovascular-imaging-eacvi
#1
Maria Carmo P Nunes, Luigi Paolo Badano, J Antonio Marin-Neto, Thor Edvardsen, Covadonga Fernández-Golfín, Chiara Bucciarelli-Ducci, Bogdan A Popescu, Richard Underwood, Gilbert Habib, Jose Luis Zamorano, Roberto Magalhães Saraiva, Ester Cerdeira Sabino, Fernando A Botoni, Márcia Melo Barbosa, Marcio Vinicius L Barros, Eduardo Falqueto, Marcus Vinicius Simões, André Schmidt, Carlos Eduardo Rochitte, Manoel Otávio Costa Rocha, Antonio Luiz Pinho Ribeiro, Patrizio Lancellotti
Aims: To develop a document by Brazilian Cardiovascular Imaging Department (DIC) and the European Association of Cardiovascular Imaging (EACVI) to review and summarize the most recent evidences about the non-invasive assessment of patients with Chagas disease, with the intent to set up a framework for standardized cardiovascular imaging to assess cardiovascular morphologic and functional disturbances, as well as to guide the subsequent process of clinical decision-making. Methods and results: Chagas disease remains one of the most prevalent infectious diseases in Latin America, and has become a health problem in non-endemic countries...
September 25, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29029007/presence-of-micro-and-macroalbuminuria-and-the-association-with-cardiac-mechanics-in-patients-with-type-2-diabetes
#2
Peter Godsk Jørgensen, Tor Biering-Sørensen, Rasmus Mogelvang, Thomas Fritz-Hansen, Tina Vilsbøll, Peter Rossing, Jan Skov Jensen
Aims: Albuminuria-a marker of generalized vascular dysfunction-is a strong predictor of heart failure in patients with type 2 diabetes which may be caused by concomitant myocardial dysfunction reflecting the same underlying pathogenesis. Methods and results: We included 915 patients with type 2 diabetes from two secondary care centres and stratified according to albuminuria status in normo-, micro-, and macroalbuminuria. We performed comprehensive echocardiography including conventional imaging, tissue Doppler imaging, and 2D speckle tracking...
October 3, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29019716/subclinical-impairment-of-the-left-ventricular-longitudinal-function-in-patients-with-prolactinomas
#3
Xiao-Bing Jiang, Jing Zhang, Cui-Ling Li, Zhi-Gang Mao, Bin Hu, Zhe Zhu, Yong-Hong Zhu, Hai-Jun Wang
Purpose Hyperprolactinemia has been associated with endothelial dysfunction and a wide range of cardiovascular risk factors, thus it can potentially lead to cardiac dysfunction. The present study was designed to interrogate our hypothesis that hyperprolactinemia can contribute to preclinical impaired left ventricular function. Patients and Methods Thirty-one prolactinoma patients and sixty healthy volunteers were prospectively recruited. Left ventricular function was evaluated using conventional two dimensions and M-mode echocardiography, as well as Doppler tissues imaging (DTI)...
October 11, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29019612/unveiling-transthyretin-cardiac-amyloidosis-and-its-predictors-among-elderly-patients-with-severe-aortic-stenosis-undergoing-transcatheter-aortic-valve-replacement
#4
Adam Castaño, David L Narotsky, Nadira Hamid, Omar K Khalique, Rachelle Morgenstern, Albert DeLuca, Jonah Rubin, Codruta Chiuzan, Tamim Nazif, Torsten Vahl, Isaac George, Susheel Kodali, Martin B Leon, Rebecca Hahn, Sabahat Bokhari, Mathew S Maurer
Aims: Transthyretin cardiac amyloidosis (ATTR-CA) has been reported in patients with aortic stenosis (AS) but its prevalence and phenotype are not known. We examine elderly patients with severe symptomatic AS undergoing transcatheter aortic valve replacement (TAVR) and determine the prevalence and phenotype of ATTR-CA non-invasively. Methods and results: We performed technetium-99m pyrophosphate (99mTc-PYP) cardiac scintigraphy prospectively on patients who underwent TAVR, to screen for ATTR-CA...
October 7, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29019179/vessel-packaging-effect-in-laser-speckle-contrast-imaging-and-laser-doppler-imaging
#5
Ingemar Fredriksson, Marcus Larsson
Laser speckle-based techniques are frequently used to assess microcirculatory blood flow. Perfusion estimates are calculated either by analyzing the speckle fluctuations over time as in laser Doppler flowmetry (LDF), or by analyzing the speckle contrast as in laser speckle contrast imaging (LSCI). The perfusion estimates depend on the amount of blood and its speed distribution. However, the perfusion estimates are commonly given in arbitrary units as they are nonlinear and depend on the magnitude and the spatial distribution of the optical properties in the tissue under investigation...
October 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28993902/cardiac-involvement-in-undifferentiated-connective-tissue-disease-at-risk-for-systemic-sclerosis-otherwise-referred-to-as-very-early-early-systemic-sclerosis-a-tdi-study
#6
Michele D'Alto, Antonella Riccardi, Paola Argiento, Ilaria Di Stefano, Emanuele Romeo, Agostino Mattera Iacono, Antonello D'Andrea, Serena Fasano, Alessandro Sanduzzi, Marialuisa Bocchino, Ludovico Docimo, Salvatore Tolone, Maria Giovanna Russo, Gabriele Valentini
Undifferentiated connective tissue disease at risk for systemic sclerosis (UCTD-risk-SSc), otherwise referred to as very early-early SSc, is a condition characterized by Raynaud's phenomenon with serum SSc marker autoantibodies and/or typical capillaroscopic findings and unsatisfying classification criteria for the disease. The aim of the present study was to assess the prevalence of right (RV) or left ventricular (LV) systolic and/or diastolic dysfunction by standard echocardiography and tissue Doppler imaging (TDI)...
October 9, 2017: Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/28987653/diagnostic-hierarchy-of-radiological-features-in-soft-tissue-tumours-and-proposition-of-a-simple-diagnostic-algorithm-to-estimate-malignant-potential-of-an-unknown-mass
#7
Leonhard Gruber, Hannes Gruber, Anna K Luger, Bernhard Glodny, Benjamin Henninger, Alexander Loizides
OBJECTIVE: To quantify the diagnostic utility of imaging features in soft tissue masses (STMs) and to provide a ranked list of predictors for malignancy. SUBJECTS AND METHODS: Imaging features in 260 cases of STMs with verified histology were assessed. Diagnostic properties including sensitivity, specificity, positive and negative predictive values, likelihood/odds ratios (OR) and normalized variance (NV) via random forest analysis were calculated. The diagnostic utility of an 8-item checklist consisting of the highest-ranked features was evaluated through a receiver-operating-characteristics (ROC) curve...
October 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28986271/the-subclinical-cardiomyopathy-of-friedreich-s-ataxia-in-a-pediatric-population
#8
Jonathan F Plehn, Keren Hasbani, Inez Ernst, Kenneth D Horton, Bart E Drinkard, Nicholas A Di Prospero
BACKGROUND: Identification of a subclinical cardiomyopathy in a pediatric patients with Friedreich's ataxia (FA) has not been well-described. METHODS: We performed echocardiography (echo), cardiac magnetic resonance imaging (cMRI) and neurologic assessment in a cross-sectional analysis of 48 genetically-confirmed FA subjects aged 9-17 years with moderate neurologic impairment but without a cardiovascular history. Echo and cMRI-determined left ventricular mass were indexed to height in g/m2...
October 3, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28983853/the-effect-of-pericardial-incision-on-right-ventricular-systolic-function-a-prospective-observational-study
#9
Charles J Bitcon, Claude Tousignant
BACKGROUND: Echocardiographic longitudinal markers of right ventricular (RV) systolic function are commonly depressed after coronary artery bypass graft surgery (CABG) despite an uncomplicated course and good clinical recovery. The exact timing and cause of these changes is unknown. The aim of this observational study was to monitor echocardiographic markers of RV systolic function intraoperatively during CABG. We used angle-independent speckle tracking to measure the primary endpoints of tricuspid annular plane systolic excursion (TAPSE) and tricuspid annular systolic velocity (S') before and after pericardiotomy...
October 5, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/28983169/left-atrium-in-cardiac-resynchronization-therapy-active-participant-or-innocent-bystander
#10
Haitham A Badran, M A Abdelhamid, Mazen T Ibrahim, Ayman M Abdelmoteleb, John K Zarif
BACKGROUND: Cardiac resynchronization therapy (CRT) is an established treatment for patients with advanced heart failure that results in improvement of left ventricle (LV) systolic function and LV reverse remodeling. This may have a positive effect on the size and the function of the left atrium (LA). We assessed the LA function, dimensions, and volumes before and after CRT implantation. METHODS: A total of 37 patients with mean age of 55.3 ± 9.64 years including 11 (29...
October 2017: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/28983167/predictors-of-transient-left-ventricular-dysfunction-following-transcatheter-patent-ductus-arteriosus-closure-in-pediatric-age
#11
Hala Mounir Agha, Hala S Hamza, Alyaa Kotby, Mona E L Ganzoury, Nanies Soliman
OBJECTIVES: To evaluate the left ventricular function before and after transcatheter percutaneous patent ductus arteriosus (PDA) closure, and to identify the predictors of myocardial dysfunction post-PDA closure if present. INTERVENTIONS: Transcatheter PDA closure; conventional, Doppler, and tissue Doppler imaging; and speckle tracking echocardiography. OUTCOME MEASURES: To determine the feasibility and reliability of tissue Doppler and myocardial deformation imaging for evaluating myocardial function in children undergoing transcatheter PDA closure...
October 2017: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/28980052/right-ventricular-tissue-doppler-myocardial-performance-index-in-children-with-pulmonary-hypertension-relation-to-invasive-hemodynamics
#12
Richard M Friesen, Michal Schäfer, Dale A Burkett, Courtney J Cassidy, D Dunbar Ivy, Pei-Ni Jone
Right ventricular (RV) failure is a significant cause of morbidity and mortality in patients with pulmonary hypertension (PH). Myocardial performance index measured by tissue Doppler imaging (TDI-MPI) has been useful in assessing RV dysfunction in adults with PH. However, TDI-MPI as a marker for RV dysfunction or disease severity has not been evaluated in pediatric PH. The aim of this study was to investigate TDI-MPI and correlate with invasive hemodynamics in pediatric PH patients. Eighty pediatric PH patients undergoing cardiac catheterization and simultaneous transthoracic echocardiography were analyzed...
October 4, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28978276/a-novel-rodent-excision-model-for-ischemia-impaired-wound-healing
#13
Anna Theresa Hofmann, Sabine Neumann, James Crawford Ferguson, Heinz Redl, Rainer Mittermayr
Delayed wound healing and the potentially resulting chronic wounds are a challenging clinical problem. Available therapeutic strategies are limited in both number and efficacy. For developing and establishing novel treatment approaches appropriate clinical relevant animal models are essential. The aim of the study was to establish a reliable and reproducible delayed wound healing model which simulates the clinical scenario of compromised vascular tissue perfusion (hypoxia/ischemia). Therefore a standard rodent ischemic flap model was modified by challenging the tissue with ascending degrees of ischemia using different surgical approaches (minimal, mild, moderate and severe ischemic invasive approach)...
October 5, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28977264/recent-advances-in-bedside-microcirculation-assessment-in-critically-ill-patients
#14
Philipe Franco do Amaral Tafner, Felipe Ko Chen, Roberto Rabello, Thiago Domingos Corrêa, Renato Carneiro de Freitas Chaves, Ary Serpa
Parameters related to macrocirculation, such as the mean arterial pressure, central venous pressure, cardiac output, mixed venous saturation and central oxygen saturation, are commonly used in the hemodynamic assessment of critically ill patients. However, several studies have shown that there is a dissociation between these parameters and the state of microcirculation in this group of patients. Techniques that allow direct viewing of the microcirculation are not completely disseminated, nor are they incorporated into the clinical management of patients in shock...
April 2017: Revista Brasileira de Terapia Intensiva
https://www.readbyqxmd.com/read/28971558/maternal-cardiac-function-after-hellp-syndrome-an-echocardiography-study
#15
R Orabona, E Vizzardi, E Sciatti, F Prefumo, I Bonadei, A Valcamonico, M Metra, T Frusca
OBJECTIVE: To evaluate maternal hemodynamics in asymptomatic women with a previous pregnancy affected by hemolysis, elevated liver enzymes and low platelets (HELLP) syndrome and compare the findings to those of women with previous pre-eclampsia (PE) and controls with a previous uncomplicated pregnancy. METHODS: Women with a history of PE (n = 60) or HELLP syndrome (n = 49) and matched healthy controls (n = 60) underwent echocardiography at 6 months to 4 years after delivery, recording left ventricular (LV) dimensions, ejection fraction (LVEF) and mass, right ventricular (RV) tricuspid annular plane systolic excursion and fractional area change (FAC)...
October 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28952929/unambiguous-identification-and-visualization-of-an-acoustically-active-catheter-by-ultrasound-imaging-in-real-time-theory-algorithm-and-phantom-experiments
#16
Viksit Kumar, Richard Liu, Randall R Kinnick, Adriana Gregory, Azra Alizd, Marek Belohlavek, Mostafa Fatemi
OBJECTIVE: Ultrasound-guided biopsies and minimally invasive procedures have been used in numerous medical applications, including catheter guidance. The biggest challenge for catheter guidance by ultrasound lies in distinguishing the catheter from neighboring tissue, as well as the ability to differentiate the catheter body from its tip. METHODS: In our previous work, we introduced a functional prototype of an acoustically active catheter, in which a miniature piezoelectric crystal allowed accurate localization of the catheter tip by pulsed wave (PW) Doppler imaging and Doppler spectrogram...
September 25, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28944616/time-course-of-the-changes-in-right-and-left-ventricle-function-and-associated-factors-after-transcatheter-closure-of-atrial-septal-defects
#17
Byung W Yoo, Jung O Kim, Lucy Y Eun, Jae Y Choi, Dong S Kim
OBJECTIVE: The purpose of this study was to evaluate the changes in right ventricle (RV) and left ventricle (LV) function after transcatheter atrial septal defect (ASD) closure and to assess the influence of the age and the amount of shunt. DESIGN: Retrospective study PATIENTS: Fifty-three adult patients who underwent transcatheter closure were enrolled, then divided into subgroups according to the age (< 40 years vs ≥ 40 years), and the amount of shunt flow (QpQs < 2...
September 24, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28943125/electrocardiographic-echocardiographic-and-left-atrial-strain-imaging-features-of-a-dog-with-atrial-flutter-and-third-degree-atrioventricular-block
#18
M Baron Toaldo, G Romito, M Cipone, A Diana, M Tursi
A 14-year-old American Staffordshire terrier was presented for episodes of exercise-induced syncope. At admission, atrial flutter coupled to third-degree atrioventricular block was diagnosed electrocardiographically. On the second day of hospitalization, surface electrocardiogram revealed spontaneous conversion to sinus rhythm with persistence of atrioventricular block. Complete transthoracic echocardiograms were performed after each electrocardiographic examination. The combined use of conventional echocardiography with tissue Doppler imaging-based modalities allowed to investigate the atrial electromechanical correlation and function during typical atrial flutter and after its resolution...
September 21, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28942608/early-anthracycline-induced-cardiotoxicity-monitored-by-echocardiographic-doppler-parameters-combined-with-serum-hs-ctnt
#19
Chu-Jie Zhang, Xiao-Li Pei, Fei-Yan Song, Ye Guo, Qun-Ling Zhang, Xian-Hong Shu, David H Hsi, Lei-Lei Cheng
PURPOSE: As growing numbers of long-term cancer survivors faced with the cardiac side effects by anthracycline treatment, it is necessary to explore the optimal monitoring method for the early detection of cardiac toxicity. METHODS: We conducted a retrospective analysis of 82 consecutive patients with diffuse large B-cell lymphoma treated with chemotherapy. Echocardiographic Doppler imaging-derived Tei index and mitral annular peak systolic velocity (Sm) measured by tissue Doppler imaging TDI, serum high-sensitivity cardiac troponin T (hs-cTnT) levels, and left ventricular ejection fraction (LVEF) by multigated radionuclide angiography (MUGA) were obtained before, after 2-4, and after 6-8 chemotherapy cycles...
September 24, 2017: Echocardiography
https://www.readbyqxmd.com/read/28939029/captopril-improves-tumor-nanomedicine-delivery-by-increasing-tumor-blood-perfusion-and-enlarging-endothelial-gaps-in-tumor-blood-vessels
#20
Bo Zhang, Ting Jiang, Yanyan Tuo, Kai Jin, Zimiao Luo, Wei Shi, Heng Mei, Yu Hu, Zhiqing Pang, Xinguo Jiang
Poor tumor perfusion and unfavorable vessel permeability compromise nanomedicine drug delivery to tumors. Captopril dilates blood vessels, reducing blood pressure clinically and bradykinin, as the downstream signaling moiety of captopril, is capable of dilating blood vessels and effectively increasing vessel permeability. The hypothesis behind this study was that captopril can dilate tumor blood vessels, improving tumor perfusion and simultaneously enlarge the endothelial gaps of tumor vessels, therefore enhancing nanomedicine drug delivery for tumor therapy...
September 20, 2017: Cancer Letters
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