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https://www.readbyqxmd.com/read/28530483/carotidynia-in-high-altitude-travelers
#1
Andrea Parra, Tamuru Okada, Peter H Lin
Background Carotidynia is characterized by focal pain and tenderness of the carotid artery without associated hemodynamic or structural abnormalities. Carotid artery pathology has also been known to occur in high altitude due to aberrant baroreceptor response in the carotid bulb. Case Presentation We herein report two cases of high altitude-related idiopathic carotidynia. The first patient was a geologist who performed oil reserve survey in the Alaska Mountain, while the second patient was hiking in a mountain trail in Peru...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28528019/us-elastography-using-carotid-artery-pulsation-may-increase-the-diagnostic-accuracy-for-thyroid-nodules-with-us-pathology-discordance
#2
Yoon Joo Cho, Eun Ju Ha, Miran Han, Jin Wook Choi
This study evaluated the diagnostic performance of ultrasound elastography (USE) using carotid arterial pulsation and determined the reproducibility of USE for thyroid nodules. A total of 148 patients with 173 thyroid nodules participated. The mean elasticity contrast index (ECI) was significantly higher in malignant nodules (3.1 ± 1.5) than in benign nodules (1.7 ± 0.8) (p < 0.001). When a cut-off ECI value of 3.5 was used, the diagnostic accuracy (78.6%) of gray-scale ultrasound (US) + ECI was the highest compared with that of the gray-scale US (76...
May 17, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28527929/new-predictors-of-complications-in-carotid-body-tumor-resection
#3
Gloria Y Kim, Peter F Lawrence, Rameen S Moridzadeh, Kate Zimmerman, Alberto Munoz, Kuauhyama Luna-Ortiz, Gustavo S Oderich, Juan de Francisco, Jorge Ospina, Santiago Huertas, Leonardo R de Souza, Thomas C Bower, Steven Farley, Hugh A Gelabert, Marcus R Kret, E John Harris, Giovanni De Caridi, Francesco Spinelli, Matthew R Smeds, Christos D Liapis, John Kakisis, Anastasios P Papapetrou, Eike S Debus, Christian-A Behrendt, Edgar Kleinspehn, Joshua D Horton, Firas F Mussa, Stephen W K Cheng, Mark D Morasch, Khurram Rasheed, Matthew E Bennett, Jean Bismuth, Alan B Lumsden, Christopher J Abularrage, Alik Farber
OBJECTIVE: This study examined the relationship between two new variables, tumor distance to base of skull (DTBOS) and tumor volume, with complications of carotid body tumor (CBT) resection, including bleeding and cranial nerve injury. METHODS: Patients who underwent CBT resection between 2004 and 2014 were studied using a standardized, multi-institutional database. Demographic, perioperative, and outcomes data were collected. CBT measurements were determined from computed tomography, magnetic resonance imaging, and ultrasound examination...
June 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28525354/the-relationship-between-insulin-resistance-and-endothelial-dysfunction-in-obese-adolescents
#4
Preneet Cheema Brar, Payal Patel, Stuart Katz
BACKGROUND: Insulin resistance and endothelial dysfunction share a reciprocal relationship that links the metabolic and cardiovascular sequelae of obesity. We characterized the brachial artery reactivity testing (BART) and carotid artery-intima media thickness (CIMT) in adolescents categorized as obese insulin resistant (OIR) and obese not insulin resistant (ONIR). Lipoprotein particle (p) analysis and inflammatory cytokines in OIR and ONIR groups were also analyzed. METHODS: Obese adolescents (n=40; mean body mass index [BMI] 35...
May 18, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28523284/enhanced-axial-and-lateral-resolution-using-stabilized-pulses
#5
Shujie Chen, Kevin J Parker
Ultrasound B-scan imaging systems operate under some well-known resolution limits. To improve resolution, the concept of stable pulses, having bounded inverse filters, was previously utilized for the lateral deconvolution. This framework has been extended to the axial direction, enabling a two-dimensional deconvolution. The modeling of the two-way response in the axial direction is discussed, and the deconvolution is performed in the in-phase quadrature data domain. Stable inverse filters are generated and applied for the deconvolution of the image data from Field II simulation, a tissue-mimicking phantom, and in vivo imaging of a carotid artery, where resolution enhancement is observed...
April 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28522299/most-advisable-strategy-in-search-of-asymptomatic-target-organ-damage-in-hypertensive-patients
#6
J Abellán-Huerta, L Prieto-Valiente, L Consuegra-Sánchez, S Montoro-García, A B Salguero-Merino, R Morales-López, J Abellán-Alemán, F Soria-Arcos
OBJECTIVE: To evaluate the diagnostic potential of seven examinations in order to define the most suitable strategy for target organ damage (TOD) search in hypertensive patients. METHODS: This is a descriptive, cross-sectional study. 153 consecutive treated and essential hypertensive patients were enrolled. Patients with established cardiovascular or chronic renal disease (stage ≥4) were excluded. TOD search was assessed by: glomerular filtration rate (GFR), albumin/creatinine ratio (ACR), electrocardiogram (ECG), echocardiogram (ECO), ankle-brachial index (ABI), pulse wave velocity (PWV), and carotid ultrasound (intima media thickness and presence of plaques)...
May 15, 2017: Hipertensión y Riesgo Vascular
https://www.readbyqxmd.com/read/28521772/feasibility-and-relevance-of-compound-strain-imaging-in-non-stenotic-arteries-comparison-between-individuals-with-cardiovascular-diseases-and-healthy-controls
#7
Martijn F H Maessen, Thijs M H Eijsvogels, Ayla Grotens, Maria T E Hopman, Dick H J Thijssen, Hendrik H G Hansen
BACKGROUND: Compound strain imaging is a novel method to noninvasively evaluate arterial wall deformation which has recently shown to enable differentiation between fibrous and (fibro-)atheromatous plaques in patients with severe stenosis. We tested the hypothesis that compound strain imaging is feasible in non-stenotic arteries and provides incremental discriminative power to traditional measures of vascular health (i.e., distensibility coefficient (DC), central pulse wave velocity [cPWV], and intima-media thickness [IMT]) for differentiating between participants with and without a history of cardiovascular diseases (CVD)...
May 18, 2017: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28511905/hemorheological-alterations-in-adults-with-prediabetes-identified-by-hemoglobin-a1c-levels
#8
M A Marini, T V Fiorentino, F Andreozzi, G C Mannino, E Succurro, A Sciacqua, F Perticone, G Sesti
BACKGROUND AND AIMS: A link between increased blood viscosity and type 2 diabetes has been previously reported. Herein, we investigated the association of blood viscosity with prediabetes, identified by glycated hemoglobin A1c (HbA1c) according to the new American Diabetes Association criteria, and subclinical atherosclerosis. METHODS AND RESULTS: The study cohort includes 1136 non-diabetic adults submitted to anthropometrical evaluation, an oral glucose tolerance test and ultrasound measurement of carotid intima-media thickness (IMT)...
April 21, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
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
#9
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/28508856/microvascular-complications-of-type-2-diabetes-mellitus-are-associated-with-plaque-score-in-the-carotid-arteries
#10
Wojciech Bartman, Katarzyna Nabrdalik, Hanna Kwiendacz, Tomasz Sawczyn, Andrzej Tomasik, Krystyna Pierzchała, Monika Adamczyk-Sowa, Agnieszka Machowska-Majchrzak, Beata Łabuz-Roszak, Władysław Grzeszczak, Janusz Gumprecht
INTRODUCTION    The "common soil" hypothesis suggests that diabetic micro- and macroangiopathy arise from a similar pathophysiological has been once proposed. It is well documented that carotid artery atherosclerosis in patients with type 2 diabetes mellitus (T2DM) is associated with cardiovascular complications; however, whether microvascular complications are similarly related remains unclear. OBJECTIVES    We aimed to explore whether plaque score or common carotid artery intima-media thickness (CIMT) is associated with the macroangiopathic or microangiopathic complications of T2DM...
May 16, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28506681/evaluation-of-carotid-intima-media-thickness-with-vascular-endothelial-growth-factor-and-malondialdehyde-levels-in-patients-with-sarcoidosis
#11
N S Samanci, S Poturoglu, C Samanci, D Alis, H O Emre, M Koldas, H K Ozcelik, T Durmus, F Kantarci, S Ozturk
PURPOSE: To assess the impact of sarcoidosis on endothelial function by measuring carotid intima-media thickness (CIMT) and serum levels of malondialdehyde and vascular endothelial growth factor (VEGF). MATERIALS AND METHODS: We prospectively analyzed 41 patients with sarcoidosis (9 men, 32 women) with a mean age of 44.9±10.2 (SD) years and 34 healthy subjects (9 men, 24 women) with a mean age of 37.26±8.9 (SD) years who served as a control group. Sarcoidosis patients receiving steroids were included in Group 1 while those not under steroid treatment were included in Group 2...
May 12, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28503488/treatment-of-cerebral-vasospasm-in-an-infant-using-a-modified-dotter-technique
#12
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/28502055/cardiovascular-risk-stratification-in-patients-with-metabolic-syndrome-without-diabetes-or-cardiovascular-disease-usefulness-of-metabolic-syndrome-severity-score
#13
Walter Masson, Teo Epstein, Melina Huerín, Lorenzo Martín Lobo, Graciela Molinero, Adriana Angel, Gerardo Masson, Diana Millán, Salvador De Francesca, Laura Vitagliano, Alberto Cafferata, Pablo Losada
INTRODUCTION: The estimated cardiovascular risk determined by the different risk scores, could be heterogeneous in patients with metabolic syndrome without diabetes or vascular disease. This risk stratification could be improved by detecting subclinical carotid atheromatosis. AIMS: To estimate the cardiovascular risk measured by different scores in patients with metabolic syndrome and analyze its association with the presence of carotid plaque. METHODS: Non-diabetic patients with metabolic syndrome (Adult Treatment Panel III definition) without cardiovascular disease were enrolled...
May 13, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28501967/plaque-tissue-morphology-based-stroke-risk-stratification-using-carotid-ultrasound-a-polling-based-pca-learning-paradigm
#14
Luca Saba, Pankaj K Jain, Harman S Suri, Nobutaka Ikeda, Tadashi Araki, Bikesh K Singh, Andrew Nicolaides, Shoaib Shafique, Ajay Gupta, John R Laird, Jasjit S Suri
Severe atherosclerosis disease in carotid arteries causes stenosis which in turn leads to stroke. Machine learning systems have been previously developed for plaque wall risk assessment using morphology-based characterization. The fundamental assumption in such systems is the extraction of the grayscale features of the plaque region. Even though these systems have the ability to perform risk stratification, they lack the ability to achieve higher performance due their inability to select and retain dominant features...
June 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28501727/methods-to-evaluate-arterial-structure-and-function-in-children-state-of-the-art-knowledge
#15
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/28501327/echo-particle-image-velocimetry-for-estimation-of-carotid-artery-wall-shear-stress-repeatability-reproducibility-and-comparison-with-phase-contrast-magnetic-resonance-imaging
#16
Arati Gurung, Phillip E Gates, Luciano Mazzaro, Jonathan Fulford, Fuxing Zhang, Alex J Barker, Jean Hertzberg, Kunihiko Aizawa, William D Strain, Salim Elyas, Angela C Shore, Robin Shandas
Measurement of hemodynamic wall shear stress (WSS) is important in investigating the role of WSS in the initiation and progression of atherosclerosis. Echo particle image velocimetry (echo PIV) is a novel ultrasound-based technique for measuring WSS in vivo that has previously been validated in vitro using the standard optical PIV technique. We evaluated the repeatability and reproducibility of echo PIV for measuring WSS in the human common carotid artery. We measured WSS in 28 healthy participants (18 males and 10 females, mean age: 56 ± 12 y)...
May 10, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28500898/the-fact-not-to-ignore-mean-blood-pressure-is-the-main-predictor-of-increased-arterial-stiffness-in-patients-with-systemic-rheumatic-diseases
#17
Alma Čypienė, Jolanta Dadonienė, Dalia Miltinienė, Egidija Rinkūnienė, Rita Rugienė, Sigita Stropuvienė, Jolita Badarienė, Aleksandras Laucevičius
PURPOSE: We aimed to evaluate the association between carotid-radial pulse wave velocity (PWV), augmentation index (AIx), and flow-mediated dilatation (FMD) of the brachial artery and factors potentially influencing them in patients with rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) and systemic sclerosis (SSc). MATERIAL AND METHODS: 316 patients diagnosed with RA (32%), SLE (20%), SSc (16%) and 156 controls (32%) were included in the study. Parameters of arterial stiffness AIx and PWV were obtained using applanation tonometry...
May 10, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28500487/high-frame-rate-vector-flow-imaging-of-the-carotid-bifurcation
#18
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/28494102/non-invasive-carotid-artery-elastography-using-multi-element-synthetic-aperture-imaging-phantom-and-in-vivo-evaluation
#19
Rohit Nayak, Giovanni Schifitto, Marvin M Doyley
PURPOSE: Vascular elastography can visualize the strain distribution in the carotid artery, which could be useful in assessing the propensity of advanced plaques to rupture. In our previous studies, we demonstrated that sparse synthetic aperture (SA) imaging can produce high quality vascular strain elastograms. However, the low output power of SA imaging may hamper its clinical utility. In this study, we hypothesize that multi-element defocused emissions can overcome this limitation and improve the quality of the vascular strain elastograms...
May 11, 2017: Medical Physics
https://www.readbyqxmd.com/read/28493931/asymptomatic-carotid-artery-stenosis-and-retinal-nerve-fiber-layer-thickness-a-community-based-observational-study
#20
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
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