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Tissue doppler imaging

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https://www.readbyqxmd.com/read/29457265/the-role-of-type-2-diabetes-mellitus-on-hypertensive-related-aortic-stiffness
#1
Edoardo Sciatti, Enrico Vizzardi, Assunta Castiello, Francesca Valentini, Ivano Bonadei, Sandro Gelsomino, Roberto Lorusso, Marco Metra
BACKGROUND: Hypertension is strongly related to arterial stiffness in a cause-effect fashion. Diabetes mellitus is also thought to determine vascular damage, mostly by means of advanced glycosylation end-products (AGEs). Aim of our study was to study the role of type 2 diabetes mellitus (T2DM) as regard ascending aortic elastic properties in hypertensive patients. METHODS: We prospectively enrolled outpatients with hypertension (n = 99) and type 2 diabetes mellitus plus hypertension (n = 42) without cardiovascular events...
February 19, 2018: Echocardiography
https://www.readbyqxmd.com/read/29454762/prognostic-value-of-right-ventricular-dysfunction-on-clinical-outcomes-after-transcatheter-aortic-valve-replacement
#2
Masahiko Asami, Stefan Stortecky, Fabien Praz, Jonas Lanz, Lorenz Räber, Anna Franzone, Raffaele Piccolo, George C M Siontis, Dik Heg, Marco Valgimigli, Peter Wenaweser, Eva Roost, Stephan Windecker, Thomas Pilgrim
OBJECTIVES: The purpose of this study was to investigate the association between right ventricular dysfunction (RVD) and cardiovascular death after transcatheter aortic valve replacement (TAVR). BACKGROUND: There is conflicting evidence on the effect of RVD on clinical outcomes after TAVR. METHODS: A total of 1,116 TAVR patients (age 82 ± 6 years; 51% female) who were consecutively enrolled into a prospective registry underwent detailed pre-operative assessment of right ventricular (RV) function and were dichotomized into 2 groups for the purposes of the present retrospective analysis...
February 9, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29452808/norepinephrine-exerts-an-inotropic-effect-during-the-early-phase-of-human-septic-shock
#3
O Hamzaoui, M Jozwiak, T Geffriaud, B Sztrymf, D Prat, F Jacobs, X Monnet, P Trouiller, C Richard, J L Teboul
BACKGROUND: We conducted this study to investigate whether norepinephrine increases cardiac contractility when administered during the early phase of septic shock. METHODS: We studied 38 patients with septic shock who had been resuscitated for <3 h and whose mean arterial pressure (MAP) remained <65 mm Hg. Echocardiographic variables were obtained before (T 0 ) and after either initiation or an increase in the dose of a norepinephrine infusion to increase MAP to ≥ 65 mm Hg (T 1 )...
March 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29446818/heart-involvement-in-systemic-sclerosis
#4
Ihsen Zairi, Lilia Baili, Khadija Mzoughi, Manel Dridi, Zouhaier Jnifene, Fatma Boussema
INTRODUCTION: Primary and secondary heart involvement in systemic sclerosis are important mortality predictors. Aim of this study was to investigate by standard echocardiography associated to pulsed-tissue Doppler imaging, six-minute walk test (6MWT) and BNP level cardiac manifestation in 30 patients with ScS and to establish a strategy to detect and to evaluate this complication. METHODS: This was a cross-sectional study conducted over a period of 16 months: a total of 30 consecutive patients with ScS diagnosed as proposed by the American college of Rheumatology and the European League Against Rheumatism 2013 and who were hospitalized in Internal Medicine department of Habib Thameur hospital underwent cardiac assessment...
March 2017: La Tunisie Médicale
https://www.readbyqxmd.com/read/29440827/evaluation-of-left-ventricular-function-in-obese-children-without-hypertension-by-a-tissue-doppler-imaging-study
#5
Yazdan Ghandi, Mehrzad Sharifi, Danial Habibi, Fatemeh Dorreh, Mojtaba Hashemi
Background: The prevalence of obesity is increasing worldwide. Obese children without hypertension are becoming an important health challenge. Aims: Complications of obesity in adults are well established, but in obese children, cardiac dysfunction has not been reported clinically. Settings and Design: The present crosssectional study investigates subclinical systolic and diastolic dysfunction using echocardiographic modalities. Materials and Methods: Twentyfive youngsters with body mass index (BMI) >30 and 25 healthy children with BMI <25 were assigned into case and control group, respectively...
January 2018: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/29435641/wave-intensity-as-a-useful-modality-for-assessing-ventilation-perfusion-imbalance-in-subclinical-patients-with-hypertension
#6
Yoshie Nogami, Yoshihiro Seo, Masayoshi Yamamoto, Tomoko Ishizu, Kazutaka Aonuma
Wave intensity (WI) is a novel noninvasive index of circulatory dynamics that reflects ventriculo-arterial coupling. It is calculated as the product of the first derivative of blood pressure and that of flow velocity measured by carotid echocardiography. This study aimed to clarify the clinical implications of WI and its relation with carbon dioxide production (VE/VCO 2 slope). Twenty-one healthy volunteers (control group) and 21 patients with hypertension (HT group) underwent cardiopulmonary exercise testing (CPX) and exercise stress echocardiography...
February 12, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29429762/enthesitis-a-hallmark-of-psoriatic-arthritis
#7
REVIEW
Gurjit S Kaeley, Lihi Eder, Sibel Z Aydin, Marwin Gutierrez, Catherine Bakewell
OBJECTIVE: To describe the growing importance of enthesitis in patients with psoriatic arthritis (PsA) and discuss the advantages and disadvantages of clinical and imaging methods currently used to assess enthesitis. METHODS: PubMed literature searches were conducted using the terms psoriatic arthritis, entheses, enthesitis, pathology, imaging, ultrasound, magnetic resonance imaging, clinical, and indices. Articles were deemed relevant if they provided insight into the pathology, monitoring, and/or diagnosis of enthesitis in PsA, or if they discussed clinical or imaging indices used to assess enthesitis...
January 6, 2018: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/29416213/the-role-of-doppler-imaging-in-the-assessment-of-right-ventricular-function-a-case-control-study-of-acute-inferior-wall-infarction
#8
Mojdeh Dabirian, Mohsen Aarabi, Maryam Nabati, Babak Bagheri, Shideh Nikoohemat, Vahid Mokhberi, Aliasghar Farsavian, Hadi Darvishi-Khezri
Background: Right ventricular infarction (RVI) develops in 30-50% of patients with inferior wall infarction (IWI). The rates of mortality, morbidity, and complications in these patients are greater than in the patients without RVI. We compared the tissue Doppler imaging (TDI) indices between a group of patients with IWI and RVI, with a similar group of patients who had IWI alone to investigate the application of TDI indices in the evaluation and detection of right ventricular function...
February 2018: Medical Archives
https://www.readbyqxmd.com/read/29415914/high-frequency-echocardiography%C3%A3-transformative-clinical-and-research-applications-in-humans-mice-and-zebrafish
#9
Louis W Wang, Scott H Kesteven, Inken G Huttner, Michael P Feneley, Diane Fatkin
Echocardiography is an invaluable tool for characterizing cardiac structure and function in vivo. Technological advances in high-frequency ultrasound over the past 3 decades have increased spatial and temporal resolution, and facilitated many important clinical and basic science discoveries. Successful reverse translation of established echocardiographic techniques, including M-mode, B-mode, color Doppler, pulsed-wave Doppler, tissue Doppler and, most recently, myocardial deformation imaging, from clinical cardiology into the basic science laboratory has enabled researchers to achieve a deeper understanding of myocardial phenotypes in health and disease...
February 6, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29406388/brachial-embolism-from-mechanical-mitral-valve-thrombosis-multimodality-imaging-guided-successful-thrombolysis
#10
Sinan Cerşit, Emrah Bayam, Sabahattin Gündüz, Ahmet Güner, Mehmet Özkan
: We report the administration of low-dose (25 mg) prolonged infusion (25 h) of tissue-typed plasminogen activator (t-PA) in the treatment of brachial arterial thromboembolism (BAT) secondary to prosthetic valve thrombosis (PVT), under the guidance of multimodality imaging. BAT is a rare disorder with serious consequences. The case of BAT secondary to mitral PVT was successfully treated with low-dose prolonged infusion of t-PA under the guidance of multimodality imaging with upper extremity duplex Doppler ultrasonography, multislice computerized tomographic angiography, coventional angiography and advanced transesophageal echocardiography...
February 5, 2018: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29399435/stimuli-disassembling-gold-nanoclusters-for-diagnosis-of-early-stage-oral-cancer-by-optical-coherence-tomography
#11
Chang Soo Kim, Dominique Ingato, Petra Wilder-Smith, Zhongping Chen, Young Jik Kwon
A key design consideration in developing contrast agents is obtaining distinct, multiple signal changes in diseased tissue. Plasmonic gold nanoparticles (Au NPs) have been developed as contrast agents due to their strong surface plasmon resonance (SPR). This study aims to demonstrate that stimuli-responsive plasmonic Au nanoclusters (Au NCs) can be used as a contrast agent for optical coherence tomography (OCT) in detecting early-stage cancer. Au NPs were clustered via acid-cleavable linkers to synthesize Au NCs that disassemble under mildly acidic conditions into individual Au NPs, simultaneously diminishing SPR effect (quantified by scattering intensity) and increasing Brownian motion (quantified by Doppler variance)...
2018: Nano Convergence
https://www.readbyqxmd.com/read/29399259/doppler-versus-histopathology-in-the-assessment-of-egyptian-patients-with-psoriasis-treated-with-acitretin
#12
Mohamed H Khater, Mohamed Soliman, Amin Amer, Fatehy Khater, Manal R Abd Elhaleem
Psoriasis is one of the most common chronic inflammatory skin diseases, characterized by erythema and the formation of plaques. The diagnosis of psoriasis is based on clinical examination, and its severity is assessed by the Psoriasis Area and Severity Index. Histologic examination is still the standard method for the final diagnosis. Sonography has proved to be a suitable noninvasive imaging method for studying soft tissue in dermatologic diseases such as psoriasis. This study evaluated the effect of Doppler sonography in the assessment of psoriasis in comparison with histopathology...
November 2017: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/29398489/young-patients-with-cystic-fibrosis-demonstrate-subtle-alterations-of-the-cardiovascular-system
#13
Jacobien B Eising, Cornelis K van der Ent, Arco J Teske, Maaike M Vanderschuren, Cuno S P M Uiterwaal, Folkert J Meijboom
BACKGROUND: As life expectancy increases in patients with cystic fibrosis, it is important to pay attention to extra-pulmonary comorbidities. Several studies have shown signs of myocardial dysfunction in adult patients, but little is known about onset and development of these changes over time. In this prospective study, cardiac function in children with cystic fibrosis was compared to that of healthy children. METHODS: 33 children, aged 3-12years, with cystic fibrosis were recruited from the Wilhelmina Children's hospital and 33 age-matched healthy children were selected from the WHISTLER study, a population-based cohort study...
February 2, 2018: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/29398438/angiogenesis-research-in-mouse-mammary-cancer-based-on-contrast-enhanced-ultrasonography-exploratory-study
#14
Ming Wang, Hai-Liang Feng, Yu-Qin Liu, He Liu, Yu-Xin Jiang, Qing-Li Zhu, Qing Dai, Jian-Chu Li
RATIONALE AND OBJECTIVES: The objective of this study was to investigate the contrast-enhanced ultrasound (CEUS) characteristics of tumor angiogenesis in mouse mammary cancer. MATERIALS AND METHODS: Twenty-four mice were examined with ultrasound and CEUS at 2-12 days after implantation. Four to five mice were assessed daily, and one to three mice were then sacrificed for histology. All of the histologic slides were reviewed and correlated with CEUS findings. RESULTS: A total of 46 cases of ultrasound examination had been performed in 24 mice...
February 2, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29384932/the-relation-between-blood-pressure-components-and-left-atrial-volume-in-the-context-of-left-ventricular-mass-index
#15
Marta Rojek, Marek Rajzer, Wiktoria Wojciechowska, Jerzy Gąsowski, Tomasz Pizoń, Danuta Czarnecka
Left atrial enlargement (LAE) is a risk factor for cardiovascular complications and death. In hypertensive patients, LAE is usually due to left ventricular (LV) hypertrophy and diastolic dysfunction. We aimed to identify factors associated with LAE in patients with increased and normal left ventricular mass index (LVMI) with reference to pulsatile and steady components of blood pressure (BP).The study was carried out as a cross-sectional observation. In a group of inhabitants of suburban area of Cracow, Poland, we measured office, ambulatory and central BP, carotid-femoral pulse wave velocity (PWV), as well as echocardiographic indices and gathered anthropometric data, information on habits and relevant medical history...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29383465/the-feasibility-of-tricuspid-annular-plane-systolic-excursion-performed-by-transesophageal-echocardiography-throughout-heart-surgery-and-its-interchangeability-with-transthoracic-echocardiography
#16
A Korshin, L Grønlykke, J C Nilsson, H Møller-Sørensen, N Ihlemann, M Kjøller, S Damgaard, P Lehnert, C Hassager, J Kjaergaard, H B Ravn
Tricuspid annular plane systolic excursion (TAPSE) is a robust measure of RV function, but the performance of transesophageal echocardiography (TEE) measured TAPSE during surgery is not well established. We aim to evaluate feasibility of various TEE views before, during and after surgery. Furthermore, we compare performance of individual TEE measurements depending on view and method (AMM- and M-mode as well as 2D) as well as TAPSE measured using TEE with transthoracic echocardiography (TTE) TAPSE. The study was conducted from January 2015 through September 2016...
January 30, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29371587/the-role-of-mir-126-in-critical-limb-ischemia-treatment-using-adipose-derived-stem-cell-therapeutic-factor-concentrate-and-extracellular-matrix-microparticles
#17
Václav Procházka, Jana Jurčíková, Kateřina Vítková, Lubomír Pavliska, Ludmila Porubová, Ondrej Lassák, Piotr Buszman, Carlos A Fernandez, František Jalůvka, Iveta Špačková, Ivo Lochman, Martin Procházka, Mária Janíková, Zdeněk Tauber, Jana Franková, Martin Lachnit, Michael C Hiles, Brian H Johnstone
BACKGROUND Paracrine factors secreted by adipose-derived stem cells can be captured, fractionated, and concentrated to produce therapeutic factor concentrate (TFC). The present study examined whether TFC effects could be enhanced by combining TFC with a biological matrix to provide sustained release of factors in the target region. MATERIAL AND METHODS Unilateral hind limb ischemia was induced in rabbits. Ischemic limbs were injected with either placebo control, TFC, micronized small intestinal submucosa tissue (SIS), or TFC absorbed to SIS...
January 26, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29364141/visualization-and-quantitative-3d-analysis-of-intraocular-melanoma-and-its-vascularization-in-a-hamster-eye
#18
Bartosz Leszczyński, Martyna Śniegocka, Andrzej Wróbel, Roman Pędrys, Małgorzata Szczygieł, Bożena Romanowska-Dixon, Krystyna Urbańska, Martyna Elas
A tumor vasculature network undergoes intense growth and rebuilding during tumor growth. Traditionally, vascular networks are histologically examined using parameters such as vessel density determined from two-dimensional slices of the tumor. Two-dimensional probing of a complicated three-dimensional (3D) structure only provides partial information. Therefore, we propose the use of microcomputed tomography (micro-CT) imaging to analyze the evolution of a tumor vasculature in an experimental ocular tumor model...
January 24, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29349425/assessment-of-lower-extremity-ischemia-using-smartphone-thermographic-imaging
#19
Peter H Lin, Marius Saines
Conventional diagnostic modalities for assessing arterial circulation or tissue perfusion include blood pressure measurement, ultrasound evaluation, and contrast-based angiographic assessment. An infrared thermal camera can detect infrared radiation energy from the human body, which generates a thermographic image to allow tissue perfusion analysis. We describe a smartphone-based miniature thermal imaging system that can be used as an adjunctive imaging modality to assess tissue perfusion. This smartphone-based camera device is noninvasive, simple to use, and cost-effective in assessing patients with lower extremity tissue perfusion...
December 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29341213/detection-of-subclinical-left-ventricular-dysfunction-by-tissue-doppler-imaging-in-horses-with-aortic-regurgitation
#20
S Ven, A Decloedt, D De Clercq, L Vera, F Rademakers, G van Loon
BACKGROUND: Aortic regurgitation (AR) can have an important clinical impact and in some cases leads to left ventricular (LV) failure. Tissue Doppler imaging (TDI) is an echocardiographic technique that has been used in horses to detect LV dysfunction. OBJECTIVES: To examine whether TDI detects changes in radial myocardial wall motion in horses with AR compared to control horses. STUDY DESIGN: Case-control study. METHODS: Echocardiography was performed in 30 healthy Warmblood horses and 34 Warmblood horses with AR, subdivided in groups with mild, moderate or severe AR...
January 17, 2018: Equine Veterinary Journal
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