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Carotid doppler

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https://www.readbyqxmd.com/read/28511475/colour-doppler-evaluation-of-extracranial-carotid-artery-in-patients-presenting-with-acute-ischemic-stroke-and-correlation-with-various-risk-factors
#1
Samrin Haq, Manoj Mathur, Jasvir Singh, Navkiran Kaur, Raminderpal Singh Sibia, Rajesh Badhan
INTRODUCTION: Stroke is defined as an abrupt onset of neurologic deficit due to vascular cause. It is one of the leading causes of mortality and morbidity all over the world making early diagnosis and treatment inevitable. Lesions of extra cranial carotid arteries are implicated in majority of cases of acute ischemic stroke. Carotid Doppler is a non-invasive imaging technique, with sensitivity approaching that of angiography. Computed Tomography (CT) plays a major role to assess the site and nature of the lesion in patients with acute ischemic stroke...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28505975/reduced-cardiovascular-functions-in%C3%A2-patients-with-alzheimer-s-disease
#2
Wang-Sheng Jin, Xian-Le Bu, Ye-Ran Wang, Ling Li, Wei-Wei Li, Yu-Hui Liu, Chi Zhu, Xiu-Qing Yao, Yang Chen, Chang-Yue Gao, Tao Zhang, Chang-Yue Gao, Hua-Dong Zhou, Fan Zeng, Yan-Jiang Wang
Previous studies have suggested that cardiovascular functions might play a critical role in Alzheimer's disease (AD) pathogenesis. However, the relationship among heart function, blood flow of cerebral vessels, and AD remains unclear. In the present study, AD patients (n = 34) and age- and gender-matched cognitively normal controls (n = 34) were recruited. Comorbidity information was collected. The ejection fraction was measured using echocardiography, and the mean velocity, pulsatility index (PI), and resistance index (RI) of the basilar artery (BA), left terminal internal carotid artery (LTICA), and right terminal internal carotid artery (RTICA) were measured using transcranial Doppler...
May 11, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28503488/treatment-of-cerebral-vasospasm-in-an-infant-using-a-modified-dotter-technique
#3
Brian M Snelling, Samir Sur, Sumedh S Shah, Eric C Peterson
An 8-month old female presented with spontaneous subarachnoid hemorrhage and was treated successfully with endovascular coil embolization of the ruptured aneurysm. Transcranial Doppler ultrasound performed four days later demonstrated middle cerebral artery (MCA) velocities greater than 350 cm/sec on the right and greater than 200 cm/sec on the left, despite medical management. The patient demonstrated no focal neurological deficits, though examination was limited by our patient's sedation and intubation. Angiography revealed severe vasospasm of the supraclinoid internal carotid and MCA territories, bilaterally...
March 2017: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/28502137/angiopoietin-2-as-a-biomarker-for-echocardiographic-abnormalities-and-carotid-atherosclerosis-in-rheumatoid-arthritis-patients
#4
Hanan Omar, Ahmed Tageldien Abdellah, Housseini Abdalla, Samah Ismail Nasef, Hamdy Omar
Atherosclerosis and cardiovascular diseases (CVD) are increasingly recognised complications of rheumatoid arthritis (RA). Angiopoietin 2 (Ang-2) levels have been associated with clinically overt CVD in general population; we assessed serum Ang-2 levels and its correlation with Echocardiographic abnormalities and carotid intima-media thickness in RA patients. 44 RA patients without clinically overt CVD and 44 healthy controls were assessed by questionnaire and clinical examination. Disease activity score (DAS-28) was calculated...
June 2016: Egyptian Journal of Immunology
https://www.readbyqxmd.com/read/28501727/methods-to-evaluate-arterial-structure-and-function-in-children-state-of-the-art-knowledge
#5
REVIEW
Piotr Skrzypczyk, Małgorzata Pańczyk-Tomaszewska
BACKGROUND: With increasing rates of hypertension, obesity, and diabetes in the pediatric population, wide available, and reproducible methods are necessary to evaluate arterial structure and function in children and adolescents. METHODS: MEDLINE/Pubmed was searched for articles published in years 2012-2017 on methodology of, current knowledge on, and limitations of the most commonly used methods to evaluate central, proximal and coronary arteries, as well as endothelial function in pediatric patients...
May 11, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28500487/high-frame-rate-vector-flow-imaging-of-the-carotid-bifurcation
#6
REVIEW
Alfredo Goddi, Chandra Bortolotto, Ilaria Fiorina, Maria Vittoria Raciti, Marianna Fanizza, Elena Turpini, Giulia Boffelli, Fabrizio Calliada
Carotid artery atherosclerotic disease is still a significant cause of cerebrovascular morbidity and mortality. A new angle-independent technique, measuring and visualizing blood flow velocities in all directions, called vector flow imaging (VFI) is becoming available from several vendors. VFI can provide more intuitive and quantitative imaging of vortex formation, which is not clearly distinguishable in the color Doppler image. VFI, as quantitative method assessing disturbed flow patterns of the carotid bifurcation, has the potential to allow better understanding of the diagnostic value of complex flow and to enhance risk stratification...
May 12, 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/28493931/asymptomatic-carotid-artery-stenosis-and-retinal-nerve-fiber-layer-thickness-a-community-based-observational-study
#7
Dandan Wang, Yang Li, Yong Zhou, Cheng Jin, Qi Zhao, Anxin Wang, Shouling Wu, Wen Bin Wei, Xingquan Zhao, Jost B Jonas
PURPOSE: To examine whether an abnormally thin retinal nerve fiber layer (RNFL) is associated with cerebrovascular insufficiency. DESIGN: Community-based study. METHODS: The Asymptomatic Polyvascular Abnormalities in Community Study included Chinese aged 40+ years and without histories of cerebrovascular incidents or coronary heart disease. Using transcranial Doppler and carotid duplex ultrasound examination, we assessed presence and degree of an intracranial arterial stenosis (ICAS) and extracranial carotid arterial stenosis (ECAS) and we measured the RNFL thickness by spectral-domain optical coherence tomography...
2017: PloS One
https://www.readbyqxmd.com/read/28492792/cervical-cannulation-for-surgical-repair-of-congenital-cardiac-defects-in-infants-and-small-children
#8
Pankaj Garg, Arvind Kumar Bishnoi, Ketav Lakhia, Parth Solanki, Jigar Surti, Komal Shah, Sanjay Patel
INTRODUCTION: The biggest challenge faced in minimally invasive pediatric cardiac surgery is cannulation for cardiopulmonary bypass. Our technique and experience of cervical cannulation in infants and small children for repair of congenital cardiac defects is reported in this study. METHODS: From January 2013 to June 2015, 37 children (22 males) with mean age of 17.97±8.63 months and weight of 8.06±1.59 kg were operated on for congenital cardiac defects through right lateral thoracotomy...
March 2017: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28491108/electroacupuncture-improves-cognitive-deficits-through-increasing-regional-cerebral-blood-flow-and-alleviating-inflammation-in-cci-rats
#9
Dexiong Han, Zhe Liu, Gaimei Wang, Ying Zhang, Zemin Wu
Objective. To investigate the effect of EA on regional cerebral blood flow, cognitive deficits, inflammation, and its probable mechanisms in chronic cerebral ischemia (CCI) rats. Methods. Rats were assigned randomly into sham operation group (sham group) and operation group. For operation group, CCI model was performed using the permanent bilateral common carotid artery occlusion (BCCAO) method, and then rats were further randomly divided into model group and electroacupuncture (EA) group. 2/15 Hz low-frequency pulse electric intervention was applied at "Baihui" and "Dazhui" acupoints in EA group...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28488811/resolution-of-occlusive-carotid-artery-thrombus-treated-with-anticoagulation-as-demonstrated-on-duplex-ultrasonography
#10
Laura Stein, John W Liang, Jesse Weinberger
BACKGROUND AND PURPOSE: While the majority of cerebral ischemic events due to carotid occlusive disease result from atherosclerotic plaque rupture, intraluminal carotid artery thrombus occasionally occurs in patients without preexisting carotid atherosclerosis. Identification of nonatherosclerotic thrombus as the cause of the carotid occlusive disease can obviate the need for an interventional procedure, and resolution of thrombus can be monitored with B-mode duplex ultrasonography. METHODS: We reviewed 3 patients treated on The Mount Sinai Hospital Stroke Unit with anticoagulation for nonatherosclerotic carotid thrombi and followed with serial Doppler ultrasonogrpahy for resolution of thrombus...
May 10, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28487838/impact-of-high-serum-immunoglobulin-e-levels-on-the-risk-of-atherosclerosis-in-humans
#11
Derya Unal, Aslı Gelincik, Ali Elitok, Semra Demir, Müge Olgac, Raif Coskun, Mehmet Kocaaga, Bahattin Colakoglu, Suna Buyukozturk
BACKGROUND: Epidemiological studies show that immunoglobulin E (IgE) levels were higher in subjects with acute coronary events. However, it is unknown if the increased IgE level is a marker of future coronary incidents and whether it may be regarded as a risk factor of an ischemic heart disease. OBJECTIVE: Our aim was to investigate the relationship between IgE levels and some atherosclerotic markers in patients without known atherosclerotic disease. METHODS: Fifty patients (mean age, 40...
April 2017: Asia Pacific Allergy
https://www.readbyqxmd.com/read/28487393/potent-thrombolytic-effect-of-n-acetylcysteine-on-arterial-thrombi
#12
Sara Martinez de Lizarrondo, Clément Gakuba, Bradley A Herbig, Yohann Repessé, Carine Ali, Cécile V Denis, Peter Lenting, Emmanuel Touzé, Scott L Diamond, Denis Vivien, Maxime Gauberti
Background -Platelet crosslinking during arterial thrombosis involves von Willebrand Factor (VWF) multimers. Therefore, proteolysis of VWF appears promising to disaggregate platelet-rich thrombi and restore vessel patency in acute thrombotic disorders such as ischemic stroke, acute coronary syndrome or acute limb ischemia. N-Acetylcysteine (NAC, a clinically approved mucolytic drug) can reduce intrachain disulfide bonds in large polymeric proteins. In the present study, we postulated that NAC might cleave the VWF multimers inside occlusive thrombi, thereby leading to their dissolution and arterial recanalization...
May 9, 2017: Circulation
https://www.readbyqxmd.com/read/28483030/value-and-progress-of-ultrasound-in-diagnosis-and-treatment-of-hyperuricemia
#13
Zeyan Gao, Ke Lü
Uric acid is the final end-product of purine metabolism and 70% of it is excreted through the kidneys. Chronic hyperuricemia can easily cause gout and meanwhile may affect the kidneys and cardiovascular system. In recent years,the incidences of hyperuricemia and gout have gradually increased. This article summarizes the correlation of hyperuricemia with hyperuricemic nephropathy,gouty arthritis,non-alcoholic fatty liver disease,and carotid atherosclerosis and the role of color Doppler ultrasound in the diagnosis of these lesions...
April 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28482676/skin-microvascular-endothelial-dysfunction-is-associated-with-type-2-diabetes-independently-of-microalbuminuria-and-arterial-stiffness
#14
Hanna Jonasson, Sara Bergstrand, Fredrik H Nystrom, Toste Länne, Carl Johan Östgren, Niclas Bjarnegård, Ingemar Fredriksson, Marcus Larsson, Tomas Strömberg
Skin and kidney microvascular functions may be affected independently in diabetes mellitus. We investigated skin microcirculatory function in 79 subjects with diabetes type 2, where 41 had microalbuminuria and 38 not, and in 41 age-matched controls. The oxygen saturation, fraction of red blood cells and speed-resolved microcirculatory perfusion (% red blood cells × mm/s) divided into three speed regions: 0-1, 1-10 and above 10 mm/s, were assessed during baseline and after local heating of the foot with a new device integrating diffuse reflectance spectroscopy and laser Doppler flowmetry...
May 1, 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28479438/computational-fluid-dynamic-analysis-after-carotid-endarterectomy-patch-graft-versus-direct-suture-closure
#15
Maurizio Domanin, Adelaide Buora, Francesco Scardulla, Bruno Guerciotti, Laura Forzenigo, Pietro Biondetti, Christian Vergara
BACKGROUND: Closure tecnique after carotid endarterectomy (CEA) still remains an issue of debate. Routinely use of patch graft (PG) has been advocated to reduce restenosis, stroke, and death but its protective effect, particularly from late restenosis, is less evident and recent studies call into question this thesis. OBJECTIVE: This study aims to compare PG and direct suture (DS) by means of computational fluid-dynamic (CFD). To identify carotid regions with flow recirculation more prone to restenosis development, we analyzed time averaged oscillatory shear index (OSI) and relative residence time (RRT), that are well known indices correlated with plaque formation...
May 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28471554/-value-of-doppler-ultrasound-for-the-assessment-of-carotid-artery-invasion-by-tumours-of-the-upper-aerodigestive-tract
#16
REVIEW
D Dequanter, M Shahla, C Aubert, Y Deniz, Y Vanhemelrijck
The diagnosis of invasion of the carotid axis preoperatively is extremely helpful and determines the therapeutic approach as well as the prognosis for patients with tumours of the upper aerodigestive tract. A review of literature to refine the radiological choice between the different existing techniques is provided. It appears that echography gives excellent results.
April 2017: Revue Médicale de Liège
https://www.readbyqxmd.com/read/28466805/aortic-stiffness-evaluated-by-echocardiography-in-female-patients-with-takayasu-s-arteritis
#17
Yong Yang, Zhen Wang, Li-Jun Yuan, Tie-Sheng Cao, Jie Liu, Rong Ren, Yun-You Duan
OBJECTIVES: The aim of this study was to evaluate the aortic stiffness (AS) in young female patients with Takayasu's arteritis (TAK) and comparable controls by measuring carotid-femoral PWV (PWVcf) using echocardiography with pulse wave Doppler. The clinical feasibility and reproducibility of this echocardiographic method were also investigated. METHODS: Twenty-five TAK female patients (mean age 28.3±6.2 years) and 25 strictly matched healthy controls were included according to rigorous inclusion and exclusion criteria...
March 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28465403/middle-cerebral-artery-flow-velocity-increases-more-in-patients-with-delayed-intraparenchymal-hemorrhage-after-pipeline
#18
Denise Brunozzi, Sophia F Shakur, Ahmed E Hussein, Fady T Charbel, Ali Alaraj
OBJECTIVE: Pipeline Embolization Devices (PED) are commonly used for endovascular treatment of cerebral aneurysms but can be associated with delayed ipsilateral intraparenchymal hemorrhage (DIPH). The role that altered intracranial hemodynamics may play in the pathophysiology of DIPH is poorly understood. We assess middle cerebral artery (MCA) flow velocity changes after PED deployment. MATERIALS AND METHODS: Patients with aneurysms located proximal to the internal carotid artery terminus treated with PED at our institution between 2015 and 2016 were retrospectively reviewed...
May 2, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28459072/serum-25-hydroxyvitamin-d3-levels-are-associated-with-carotid-intima-media-thickness-and-carotid-atherosclerotic-plaque-in-type-2-diabetic-patients
#19
Yurong Wang, Huijuan Zhang
Objective. To investigate the relationship between serum 25-hydroxyvitamin D3 [25(OH)D3] levels and carotid intima-media thickness (IMT) as well as carotid atherosclerotic plaque in patients with type 2 diabetes mellitus (T2DM). Methods. 314 patients with T2DM were enrolled in this study. The clinical data and laboratory examinations of subjects were recorded, such as serum 25(OH)D3, hemoglobin A1c (HbA1c), serum lipids, fasting blood glucose (FBG), and other biochemical parameters. Color Doppler ultrasound was used to measure carotid IMT and carotid atherosclerotic plaques...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28444935/hydration-status-influences-the-measurement-of-arterial-stiffness
#20
Aaron R Caldwell, Matthew A Tucker, Jenna Burchfield, Nicole E Moyen, Alf Z Satterfield, Ashley Six, Brendon P McDermott, Sean W Mulvenon, Matthew S Ganio
Consensus guidelines have attempted to standardize the measurement and interpretation of pulse wave velocity (PWV); however, guidelines have not addressed whether hydration status affects PWV. Moreover, multiple studies have utilized heat stress to reduce arterial stiffness which may lead to dehydration. This study utilized two experiments to investigate the effects of dehydration on PWV at rest and during passive heat stress. In experiment 1, subjects (n = 19) completed two trials, one in which they arrived euhydrated and one dehydrated (1·2[1·0]% body mass loss)...
April 26, 2017: Clinical Physiology and Functional Imaging
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