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Tissue doppler imaging

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https://www.readbyqxmd.com/read/29670871/echocardiographic-evaluation-of-ventricular-function-for-the-neonatologist-and-pediatric-intensivist
#1
REVIEW
Cécile Tissot, Yogen Singh, Nicole Sekarski
In the neonatal and pediatric intensive care setting, bedside cardiac ultrasound is often used to assess ventricular dimensions and function. Depending upon the underlying disease process, it is necessary to be able to evaluate the systolic and diastolic function of left and or right ventricles. The systolic function of left ventricle is mostly assessed qualitatively on visual inspection "eye-balling" and quantitatively by measuring circumferential fraction shortening or calculating the ejection fraction by Simpson's planimetry...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29667882/new-doppler-imaging-technique-for-assessing-angiogenesis-in-breast-tumors-correlation-with-immunohistochemically-analyzed-microvessels-density
#2
Sewha Kim, Hye Jin Lee, Kyung Hee Ko, Ah Young Park, Jieun Koh, Hae Kyoung Jung
Background Microvessel density (MVD) is associated with grade and prognosis in breast tumors. However, conventional color Doppler flow (CDF) imaging has been limited to represent MVD of breast tumors. Purpose To evaluate whether a new Doppler imaging technique (AngioPLUS) can represent MVD of breast tumors. Material and Methods The institutional review board approved this retrospective study, and patients' informed consent was waived. CDF and AngioPLUS were available in pathologically confirmed 55 breast tumors of 53 women...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29660911/the-effects-of-different-remote-ischemic-conditioning-on-ischemia-induced-failure-of-microvascular-circulation-in-humans
#3
Muzaffer Akkoca, Suzan Emel Usanmaz, Serhat Tokgöz, Cüneyt Köksoy, Emine Demirel-Yilmaz
BACKGROUND: Intermittent ischemia in remote tissues can be applied before ischemic injury, during ischemic injury or at the beginning of reperfusion of an index organ ischemia. The aim of this study was to investigate the effect of Remote Ischemic Conditioning (RIC) of the leg on changes in ischemia-induced the microvascular functions of the arm. MATERIAL AND METHODS: Ischemic microvascular injury was induced by arm ischemia (20 min) and reperfusion in healthy, nonsmoker, male volunteers (ischemia group-ISC, n: 9)...
April 13, 2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29657869/impaired-cardiac-and-vascular-motion-in-patients-with-takayasu-s-arteritis-a-velocity-vector-imaging-based-study
#4
Selen Yurdakul, Fatma Alibaz-Öner, Haner Direskeneli, Saide Aytekin
Objective: Takayasu's arteritis (TAK) is a chronic inflammatory vasculitis of the aorta and its major branches. In the present study, we aimed to evaluate the motion of the vascular wall and myocardial contractility by using a novel strain imaging method, velocity vector imaging (VVI), in patients with TAK. We also aimed to compare them with another inflammatory autoimmune disorder, systemic lupus erythematosus (SLE). Methods: We studied 33 patients with TAK, 18 patients with SLE, and 20 age- and sex-matched controls...
March 2018: European Journal of Rheumatology
https://www.readbyqxmd.com/read/29650121/prediction-of-abnormal-myocardial-relaxation-from-signal-processed-surface-ecg
#5
Partho P Sengupta, Hemant Kulkarni, Jagat Narula
BACKGROUND: Myocardial relaxation is impaired in almost all cases with left ventricular diastolic dysfunction (LVDD) and is a strong predictor of cardiovascular and all-cause mortality. OBJECTIVES: This study investigated the feasibility of signal-processed surface electrocardiography (spECG) as a diagnostic tool for predicting the presence of abnormal cardiac muscle relaxation. METHODS: A total of 188 outpatients referred for coronary computed tomography (CT) angiography underwent an echocardiogram for assessment of LVDD...
April 17, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29621764/right-ventricular-functions-in-pulmonary-thromboembolism
#6
Tarik Yildirim, Fatih Akın, Ibrahim Altun, Seda Yildirim, Ozcan Basaran, Mustafa Soylu
<br><br>this is a letter to editor We have read with great interest the paper entitled 'Subclinical Atherosclerosis in Patients with Prior Pulmonary Thromboembolism' Buyukterzi et al.1 is very important study. We have some suggestions about this trial. Firstly there are several echocardiographic parameters are available to determine right ventricular functions. Fractional area change (FAC), tricuspit annular plane systolic excursion (TAPSE), tissue Doppler derived right ventricular systolic excursion velocity S', strain and strain rate are the major determiner of right ventricular systolic functions...
April 5, 2018: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/29615292/dynamic-myocardial-response-to-exercise-in-childhood-cancer-survivors-treated-with-anthracyclines
#7
Barbara Cifra, Ching Kit Chen, Chun-Po S Fan, Cameron Slorach, Cedric Manlhiot, Brian W McCrindle, Andreea Dragulescu, Andrew N Redington, Mark K Friedberg, Paul C Nathan, Luc Mertens
BACKGROUND: Anthracycline cardiotoxicity can cause significant long-term morbidity in childhood cancer survivors (CCS), but many CCS do not manifest clinical symptoms until adulthood. The aims of this study were to characterize the dynamic myocardial response to exercise of CCS at long-term follow-up by combining semisupine bicycle exercise stress echocardiography with myocardial imaging techniques and to establish whether semisupine bicycle exercise stress echocardiography could identify CCS with abnormal exercise response...
March 31, 2018: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29611048/use-of-speckle-tracking-in-the-evaluation-of-late-subclinical-myocardial-damage-in-survivors-of-childhood-acute-leukaemia
#8
Elena Guadalupe Corella Aznar, Ariadna Ayerza Casas, Lorenzo Jiménez Montañés, Maria Ángeles Carlota Calvo Escribano, José Ignacio Labarta Aizpún, Pilar Samper Villagrasa
Heart disease is the leading cause of non-cancer death in childhood cancer survivors. to determine the prevalence of subclinical cardiac dysfunction using speckle tracking and compare its results with those obtained by classical methods of assessing left ventricular function and its relationship with different factors to identify the population at higher risk. Echocardiographic assessment of left ventricular function included ejection fraction, tissue Doppler, longitudinal/circumferential strains and biochemical parameters (troponin-T and Pro-BNP) in a cohort of 57 survivors of childhood acute leukaemia with at least 10 years since diagnosis...
April 2, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29607217/modern-diagnostic-techniques-for-the-assessment-of-ocular-blood-flow-in-myopia-current-state-of-knowledge
#9
REVIEW
Ewa Grudzińska, Monika Modrzejewska
Myopia is the most common refractive error and the subject of interest of various studies assessing ocular blood flow. Increasing refractive error and axial elongation of the eye result in the stretching and thinning of the scleral, choroid, and retinal tissues and the decrease in retinal vessel diameter, disturbing ocular blood flow. Local and systemic factors known to change ocular blood flow include glaucoma, medications and fluctuations in intraocular pressure, and metabolic parameters. Techniques and tools assessing ocular blood flow include, among others, laser Doppler flowmetry (LDF), retinal function imager (RFI), laser speckle contrast imaging (LSCI), magnetic resonance imaging (MRI), optical coherence tomography angiography (OCTA), pulsatile ocular blood flowmeter (POBF), fundus pulsation amplitude (FPA), colour Doppler imaging (CDI), and Doppler optical coherence tomography (DOCT)...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29606334/apical-transverse-motion-is-associated-with-interventricular-mechanical-delay-and-decreased-left-ventricular-function-in-children-with-dilated-cardiomyopathy
#10
Wei Hui, Cameron Slorach, Mark K Friedberg
BACKGROUND: Apical transverse motion (ATM) is associated with electromechanical dyssynchrony in adult dilated cardiomyopathy (DCM). Bundle branch block electromechanical dyssynchrony is uncommon in pediatric DCM, but ATM and its association with ventricular function have not been characterized. METHODS: Fifty-six children with DCM were retrospectively studied. Using echocardiography, ATM was assessed visually and by speckle-tracking longitudinal displacement of the interventricular septal and left ventricular (LV) lateral walls in opposite directions...
March 29, 2018: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29605474/hemodynamic-mechanisms-of-exercise-induced-pulmonary-hypertension-in-patients-with-lymphangioleiomyomatosis-the-role-of-exercise-stress-echocardiography
#11
Andrea Sonaglioni, Massimo Baravelli, Roberto Cassandro, Olga Torre, Davide Elia, Claudio Anzà, Sergio Harari
BACKGROUND: The pathogenesis of pulmonary hypertension (PH) in lymphangioleiomyomatosis (LAM) has not yet been completely clarified. The aim of this study was to conduct a noninvasive evaluation of the main hemodynamic mechanisms of exercise-induced PH in patients with LAM, assessed using exercise stress echocardiography. METHODS: Fifteen patients with LAM (mean age, 47 ± 13 years; all women) without resting PH were enrolled in a prospective single-center study and compared with 15 healthy female control subjects (mean age, 45...
March 28, 2018: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29601835/photoacoustic-imaging-of-synovial-tissue-hypoxia-in-experimental-post-traumatic-osteoarthritis
#12
REVIEW
Zhongyu Liu, Manting Au, Xuan Wang, Pok-Man Boris Chan, Puxiang Lai, Lei Sun, Yongping Zheng, Limin Rong, Chunyi Wen
OBJECTIVES: This pilot study aimed to investigate the feasibility of non-invasively assessing synovial tissue hypoxia in vivo using photoacoustic (PA) imaging in a post-traumatic osteoarthritis model and explore its correlation with OA severity. METHODS: The three-dimensional vasculature structure and oxygenation level of synovial tissues of destabilization of the medial meniscus (DMM)-induced osteoarthritis (OA) mice were longitudinally monitored using PA imaging...
March 27, 2018: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/29580628/prognostic-usefulness-of-tricuspid-annular-diameter-for-cardiovascular-events-in-patients-with-tricuspid-regurgitation-of-moderate-to-severe-degree
#13
Hyungseop Kim, In-Cheol Kim, Hyuck-Jun Yoon, Hyoung-Seob Park, Yun-Kyeong Cho, Chang-Wook Nam, Seongwook Han, Seung-Ho Hur, Yoon-Nyun Kim
Functional tricuspid regurgitation (TR) is frequently encountered. Current guidelines recommend the surgical correction of severe TR only at the time of left valve surgery despite emphasizing the enlarged tricuspid annulus (TA) dimension. We attempted to evaluate the relation between TA dimension and clinical outcomes of moderate or severe TR. A total of 213 patients (mean age 68 years, women 68%) with moderate or severe TR secondary to left-sided valve surgery, nonvalvular disease, or isolated primary TR were retrospectively identified and classified into tertiles of TA dimension...
March 2, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29577602/lack-of-interferon-gamma-attenuates-foreign-body-reaction-to-subcutaneous-implants-in-mice
#14
Puebla Cassini-Vieira, Melissa de Carvalho Santuchi, Rafaela Fernandes da Silva, Remo Castro Russo, Fernanda Assis Araújo, Robson Augusto Souza Dos Santos, Silvia Passos Andrade, Mauro Martins Teixeira, Luciola Silva Barcelos
Subcutaneous implantation of synthetic materials and biomedical devices often induces abnormal tissue healing - the foreign body reaction - which impairs their function. In particular, Interferon-γ (IFN-γ) is a critical endogenous mediator of inflammation and plays a key role in a wide variety of biological responses including tissue healing. However, the contribution of endogenous IFN-γ on different features of the foreign body response induced by synthetic implants regarding neovascularization, inflammation, and fibrogenesis is not well known...
March 25, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29577423/intraoperative-evaluation-of-perfusion-in-free-flap-surgery-a-systematic-review-and-meta-analysis
#15
REVIEW
Jan Maerten Smit, Vera L Negenborn, Sanne M Jansen, Mariëlle E H Jaspers, Ralph de Vries, Martijn W Heymans, Hay A H Winters, Ton G van Leeuwen, Margriet G Mullender, Nicole M A Krekel
BACKGROUND: Free flap survival relies on adequate tissue perfusion. We aim to give an overview of the available literature of all objective methods to intraoperatively assess free flap tissue perfusion, and the effects on (partial) flap loss. METHODS: A systematic review and meta-analysis according to the PRISMA guidelines was performed (PubMed, Cochrane Library, Embase) regarding English language articles. Meta-analyses were performed by pooling means and slopes using random-effect models...
March 25, 2018: Microsurgery
https://www.readbyqxmd.com/read/29573995/investigation-of-ventricular-pre-excitation-electrocardiographic-pattern-in-two-horses-clinical-presentation-and-potential-causes
#16
Judit Viu, Lara Armengou, Annelies Decloedt, Eduard Jose-Cunilleras
Two horses referred to the Unitat Equina, Fundació Hospital Clínic Veterinari, Universitat Autònoma de Barcelona, for unrelated clinical problems, and with no previous history of cardiac disease exhibited an intermittent ventricular pre-excitation electrocardiographic pattern during hospitalization. Both animals showed decreased plasma total and ionized magnesium concentrations, but no other relevant electrolyte disturbances were detected. Altered interventricular septal motion associated with ventricular pre-excitation beats (VPBs) was detected on M-mode echocardiography in both horses...
March 21, 2018: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/29572873/characterizing-cardiac-dysfunction-in-fetuses-with-left-congenital-diaphragmatic-hernia
#17
Mónica Cruz-Lemini, Brenda Valenzuela-Alcaraz, Julio Granados-Montiel, Josep M Martínez, Fátima Crispi, Eduard Gratacós, Rogelio Cruz-Martínez
OBJECTIVE: To evaluate cardiac function by conventional echocardiography and tissue Doppler imaging (TDI) in fetuses with left congenital diaphragmatic hernia (CDH). METHODS: Conventional echocardiography (myocardial performance index (MPI), ventricular filling velocities and E/A ratios) and TDI (annular myocardial peak velocities, E/E' and E'/A' ratios) in mitral, septal and tricuspid annulus were evaluated in a cohort of 31 left-sided CDH fetuses and compared with 75 controls matched for gestational age 2:1...
March 23, 2018: Prenatal Diagnosis
https://www.readbyqxmd.com/read/29566816/cardiac-resynchronization-therapy-in-patients-with-heart-failure-and-narrow-qrs-complexes
#18
Bhupendar Tayal, John Gorcsan, Jeroen J Bax, Niels Risum, Niels Thue Olsen, Jagmeet P Singh, William T Abraham, Jeffrey S Borer, Kenneth Dickstein, Daniel Gras, Henry Krum, Josep Brugada, Michele Robertson, Ian Ford, Johannes Holzmeister, Frank Ruschitzka, Peter Sogaard
BACKGROUND: Cross correlation analysis (CCA) using tissue Doppler imaging has been shown to be associated with outcome after cardiac resynchronization therapy (CRT) in patients with heart failure (HF) with wide QRS. However, its significance in patients with narrow QRS treated with CRT is unknown. OBJECTIVES: The aim of the current study was to investigate the association of mechanical activation delay by CCA with study outcome in patients with HF enrolled in the EchoCRT trial...
March 27, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29565692/a-case-of-subacute-infantile-mountain-sickness-in-a-kyrgyz-child
#19
Kubatbek Muratali Uulu, Meerim Cholponbaeva, Melis Duishobaev, Aidana Toktosunova, Abdirashit Maripov, Akylbek Sydykov, Akpay Sarybaev
Muratali Uulu, Kubatbek, Meerim Cholponbaeva, Melis Duishobaev, Aidana Toktosunova, Abdirashit Maripov, Akylbek Sydykov, and Akpay Sarybaev. A case of subacute infantile mountain sickness in a Kyrgyz child. High Alt Med Biol. 00: 000-000, 2018.-Subacute infantile mountain sickness (SIMS) is a syndrome of severe pulmonary hypertension and right heart failure that develops in infants born in the lowlands and subsequently brought to live at high altitudes. Earlier postmortem studies have demonstrated significant remodeling of small pulmonary arteries as well as right ventricular hypertrophy and dilatation...
March 22, 2018: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29556421/normative-ultrasound-references-for-the-paediatric-wrist-dorsal-soft-tissues
#20
Karen Rosendahl, Ingvild Sævold Bruserud, Ninnie Oehme, Pétur Benedikt Júlíusson, Laura Tanturri de Horatio, Lil-Sofie Ording Müller, Silvia Magni-Manzoni
Objective: To report novel ultrasound (US) references for the healthy paediatric wrist. Methods: Healthy children and adolescents had an US examination including Doppler, of the right wrist, using a mid-sagittal image through the radiocarpal (RC)/midcarpal (MC) joints. These features were noted: appearances and depth of the recess, with an additional measurement in the flexed position and number of Doppler signals within the recess in close proximity to the joint...
2018: RMD Open
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