Read by QxMD icon Read


Hong Liang, Dawei Wang, Guoying Che, Yanxin Su
PURPOSE: The purpose of this study was to compare the carotid artery wall elasticity between patients with uremia and controls using echo tracking (ET). METHODS: Ninety-three patients with uremia and 35 control subjects (Group A) were enrolled in this study. In the ET mode, the carotid artery elasticity parameters including stiffness index (β), pressure-strain elasticity modulus (EP), arterial compliance (AC), and one-point pulse wave velocity (PWVβ) were measured, and carotid intima-media thickness (IMT) was measured with B-mode ultrasonography...
February 16, 2018: Journal of Medical Ultrasonics
Céline Engrand, Didier Laux, Jean-Yves Ferrandis, Roland Demaria, Emmanuel Le Clézio
Tissue temperature control during cardiac surgery is crucial for myocardial protection. To preserve the tissue, a hypothermic cardioplegia is applied in order to decrease the heart temperature down to around 10°C. The monitoring of the thermal evolution of the myocardium is then of importance to minimize deleterious effects on the heart. The present work aims at evaluating the potential of an ultrasonic velocimetric thermometry on the monitoring of in vitro tissues heating. An indentation process is first proposed to identify the experimental linear relationship linking, in myocardia, the speed of the ultrasonic longitudinal wave to the tissue temperature...
February 1, 2018: Ultrasonics
Manjie You, Li Zhang, Lingyun Fang, Jie Li, Mingxing Xie
The objective is to evaluate carotid arterial elasticity in patients with obstructive sleep apnea hypopnea syndrome (OSAHS) by two-dimensional speckle tracking imaging (2D-STI).Sixty-two hospitalized patients with OSAHS and 20 healthy subjects were studied. The OSAHS patients were divided into 3 subgroups: a mild group, a moderate group, and severe group. All subjects underwent complete left common carotid artery (LCCA) examination by echo-tacking technique and 2D-STI. The stiffness parameter (β), elastic modulus (Eρ), stiffness β single pulse wave velocity (PWVβ), and arterial compliance (AC) were automatically calculated by echo-tracking technique...
December 2017: Medicine (Baltimore)
Ayşe Nur Şirin Özcan, Abdullah Nabi Aslan, Özlem Ünal, Karabekir Ercan, Orhan Küçükşahin
AIM: Cardiovascular (CV) disease is the reason for most mortality cases in RA and cannot be explained only by the presence of traditional CV risk factors. In this study, we aimed to investigate the relationship between local carotid stiffness (CS) parameters measured by a novel ultrasound method and inflammatory disease activity in rheumatoid arthritis (RA) patients. Material and methods: The study was conducted with 70 RA patients and 35 control subjects. According to their disease activity score (DAS-28), the RA patients were classified into active RA (n = 36; DAS-28 > 3...
May 10, 2017: Medical Ultrasonography
Abdullah Nabi Aslan, Ayşe Nur Özcan, Hüseyin Ayhan, Serkan Sivri, Filiz Çelebi, Karabekir Ercan, Tahir Durmaz
INTRODUCTION: Arterial stiffness (AS) is a well-accepted and reliable predictor of atherosclerotic diseases. Inflammation plays an important role in the development of AS. AIM: To evaluate local carotid stiffness (CS) together with fibrinogen and high-sensitivity C-reactive protein (hsCRP) levels in stable angina pectoris (SAP) patients. MATERIAL AND METHODS: The study consisted of 353 consecutive patients with SAP. All underwent coronary angiography (CAG) after the evaluation of local CS parameters and carotid intima-media thickness (IMT) from both common carotid arteries by a real-time echo-tracking system...
2017: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
Matjaz Vrtovec, Ajda Anzic, Irena Preloznik Zupan, Katja Zaletel, Ales Blinc
BACKGROUND: Patients with myeloproliferative neoplasms (MPNs) are at increased risk for atherothrombotic events. Our aim was to determine if patients with essential thrombocytosis (ET), a subtype of MPNs, free of symptomatic atherosclerosis, have greater carotid artery stiffness, worse endothelial function, greater coronary calcium and carotid plaque burden than control subjects. PATIENTS AND METHODS: 40 ET patients without overt vascular disease, and 42 apparently healthy, age and sex-matched control subjects with comparable classical risk factors for atherosclerosis and Framingham risk of coronary disease were enrolled...
June 2017: Radiology and Oncology
Prashant Verma, Marvin M Doyley
We derived the Cramér Rao lower bound for 2-D estimators employed in quasi-static elastography. To illustrate the theory, we modeled the 2-D point spread function as a sinc-modulated sine pulse in the axial direction and as a sinc function in the lateral direction. We compared theoretical predictions of the variance incurred in displacements and strains when quasi-static elastography was performed under varying conditions (different scanning methods, different configuration of conventional linear array imaging and different-size kernels) with those measured from simulated or experimentally acquired data...
June 24, 2017: Ultrasound in Medicine & Biology
Abdullah Nabi Aslan, Ayşe Nur Şirin Özcan, Şükran Erten, Yakup Alsancak, Tahir Durmaz
OBJECTIVES: Rheumatoid arthritis (RA) is a chronic, inflammatory disease associated with increased risk of cardiovascular (CV) disease. Arterial stiffness (AS) is an independent predictor of CV events. This study aimed to analyse local carotid AS parameters in seronegative and seropositive RA patients. DESIGN: Of 347 consecutive RA patients, we selected specifically those who were free of established CV diseases and risk factors. As a result, 140 patients (126 women, 52...
October 2017: Scandinavian Cardiovascular Journal: SCJ
Štefan Tóth, Ján Fedačko, Tímea Pekárová, Zdenka Hertelyová, Matan Katz, Adil Mughees, Jozef Kuzma, Peter Štefanič, Ivan Kopolovets, Daniel Pella
INTRODUCTION: Many studies have highlighted the important role of PCSK9 in the development of cardiometabolic changes and its possible function as a biomarker of myocardial infarction or ischemic heart disease. This study aimed to determine the relationship between circulating PCSK9 levels and subclinical vascular changes in the group of low risk patients without manifest cardiovascular diseases. METHODS: In this study, 120 healthy patients, free of manifest cardiovascular diseases, diabetes mellitus, and without lipid-lowering therapy, were divided into three groups based on BMI: normal weight (N = 50), overweight (N = 30), and obese (N = 40)...
December 2017: Cardiology and Therapy
Francesco Antonini-Canterin, Elisa Leiballi, Flavia Martinis, Daniela Pavan
Hypertension is considered the major modifiable risk factor for premature cardiovascular disease, being more common than other important risk factors as cigarette smoking, dyslipidemia, or diabetes [1]. In older patients, systolic pressure and pulse pressure are more powerful determinants of cardiovascular events than diastolic pressure [2]. Importantly, the cardiovascular risk associated with hypertension is significantly affected by the presence or absence of other major risk factors [3]. Among imaging features, left ventricular hypertrophy (LVH) is the more common and early in patients with hypertension [4]...
April 10, 2017: Minerva Cardioangiologica
Marko Novaković, Katja Prokšelj, Vito Starc, Borut Jug
PURPOSE: Adults after surgical repair of tetralogy of Fallot (ToF) may have impaired vascular and cardiac autonomic function. Thus, we wanted to assess interrelations between heart rate variability (HRV) and heart rate recovery (HRR), as parameters of cardiac autonomic function, and arterial stiffness, as a parameter of vascular function, in adults with repaired ToF as compared to healthy controls. METHODS: In a case-control study of adults with repaired ToF and healthy age-matched controls we measured: 5-min HRV variability (with time and frequency domain data collected), carotid artery stiffness (through pulse-wave analysis using echo-tracking ultrasound) and post-exercise HRR (cycle ergometer exercise testing)...
June 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
Olga Vriz, Victor Aboyans, Rosalba Minisini, Julien Magne, Nicole Bertin, Mario Pirisi, Eduardo Bossone
Arterial stiffness can predict cardiovascular events, and the aim of this study was to produce age- and sex-specific reference values for echo-tracking carotid stiffness in healthy subjects. A total of 900 subjects (500 males, mean age 45.8±19 years) were enrolled. Common carotid artery stiffness and compliance, using a high-definition echo-tracking ultrasound system, were evaluated. To compare stiffness parameters across the different age groups, individual scores were transformed into T-scores, indicating how many standard deviation (s...
July 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
Maurizio Cusmà Piccione, Concetta Zito, Bijoy Khandheria, Antonio Madaffari, Alessandra Oteri, Gabriella Falanga, Domenica Donato, Myriam D'Angelo, Maria Ludovica Carerj, Gianluca Di Bella, Egidio Imbalzano, Pietro Pugliatti, Scipione Carerj
BACKGROUND: Impairment of the adaptive mechanisms that increase cardiac output during exercise can translate to a reduced functional capacity. We investigated cardiovascular adaptation to exertion in asymptomatic hypertensive patients, aiming to identify the early signs of cardiac and vascular dysfunction. METHODS AND RESULTS: We enrolled 54 subjects: 30 patients (45.1±11.9years, 19 males) and 24 age-matched healthy controls (44.4±9.6years, 14 males). Speckle-tracking echocardiography (STE) and echo-tracking were performed at rest and during exertion to assess myocardial deformation and arterial stiffness...
April 1, 2017: International Journal of Cardiology
Olga Vriz, Serena Favretto, Joanna Jaroch, Rychard Wojciech, Eduardo Bossone, Caterina Driussi, Francesco Antonini-Canterin, Paolo Palatini, Krystyna Loboz-Grudzien
OBJECTIVES: To investigate whether newly diagnosed untreated hypertensive patients show higher left ventricular (LV) contractility, as assessed by traditional echocardiographic indices and carotid wave intensity (WI) parameters, including amplitude of the peak during early (W1 ) and late systole (W2 ). METHODS: A total of 145 untreated hypertensive patients were compared with 145 age- and sex-matched normotensive subjects. They underwent comprehensive echocardiography and WI analysis...
January 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Olga Vriz, Julien Magne, Caterina Driussi, Gabriele Brosolo, Francesco Ferrara, Paolo Palatini, Victor Aboyans, Eduardo Bossone
Arterial stiffness and compliance parameters from two adjacent elastic arteries [aorta and common carotid artery (CCA)] were compared and their relationship with left ventricular (LV) structure and function and clinical parameters was assessed. 584 healthy subjects were prospectively enrolled [mean age 47.8 ± 18.4 years, range 16-94; 318 (54.4%) men]. They underwent comprehensive transthoracic echocardiography; M-mode diameters were measured at the level of the ascending aorta in systole and diastole and by echo-tracking at the level of the left CCA...
April 2017: International Journal of Cardiovascular Imaging
Telmo Pereira, Armindo Almeida, João Maldonado, Jorge Conde
OBJECTIVE: The Moens-Korteweg equation predicts changes in pulse wave velocity (PWV) following changes in arterial radius, therefore an increase in arterial radius, as seen in a reactive hyperaemia (RH) condition, should slow PWV over a given arterial segment. If this assumption is true, than the deceleration of PWV over the brachial artery (flow-mediated slowing - FMS) should be an equivalent signal of endothelial function during a conventional RH flow-mediated dilation (FMD) procedure...
September 2016: Journal of Hypertension
Telmo Pereira, Armindo Almeida, João Maldonado, Jorge Conde
OBJECTIVE: The Moens-Korteweg equation predicts changes in pulse wave velocity (PWV) following changes in arterial radius, therefore an increase in arterial radius, as seen in a reactive hyperaemia (RH) condition, should slow PWV over a given arterial segment. If this assumption is true, than the deceleration of PWV over the brachial artery (flow-mediated slowing - FMS) should be an equivalent signal of endothelial function during a conventional RH flow-mediated dilation (FMD) procedure...
September 2016: Journal of Hypertension
Joanna Jaroch, Krystyna Łoboz-Grudzień, Stefania Magda, Maria Florescu, Zbigniew Bociąga, Andrea O Ciobanu, Ewa Kruszyńska, Krzysztof Dudek, Dragos Vinereanu
BACKGROUND: Left ventricular hypertrophy (LVH) and geometry patterns vary in different hemodynamic profiles The concentric hypertrophy (CH) pattern has been proved to have the worst prognosis. OBJECTIVES: The aim of the study was to test the hypothesis that carotid artery stiffness, as a marker of vascular damage, is associated with CH, independently of other potential determinants such as demographic factors (age, sex, BMI), clinical parameters (smoking, diabetes, creatinine level) and hemodynamic variables (blood pressure, pulse pressure [PP])...
March 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
S Kiando, N Tucker, L Castro-Vega, D Cusi, P Galan, Empana J-P, J Olin, H Gornik, P-F Plouin, I Kullo, D Milan, S Ganesh, P Boutouyrie, J Kovacic, X Jeunemaitre, N Bouatia-Naji
OBJECTIVE: Fibromuscular dysplasia (FMD) is a nonatherosclerotic vascular disease leading to stenosis, dissection and aneurysm affecting mainly the renal and cerebrovascular arteries. FMD has higher prevalence in females (80-90%) and predisposes to hypertension and stroke but its pathophysiology is unclear. DESIGN AND METHOD: We performed a multistage genetic association study (1,154 patients and 3,895 controls) from five case-control cohorts. We investigated the association between rs9349379 in the phosphatase and actin regulator 1 gene (PHACTR1) and carotid traits by echo-tracking in healthy volunteers, the expression of PHACTR1 by genotypes in human fibroblasts, protein staining pattern in human carotids, and vasculature development after Phactr1 knockdown in zebrafish...
September 2016: Journal of Hypertension
D Skultetyova, S Filipova
OBJECTIVE: The aim of the study is to investigate the relationship between daytime and night-time mean blood pressure (BP) on carotid artery stiffness (CAS) and wave intensity (WI) in 1) hypertensive patients (pts) and in 2) the subgroups formed according to the circadian patterns of BP. DESIGN AND METHOD: We investigated 148 hypertensive pts, mean age 58 years. The subgroups were created according to the circadian patterns (64 dippers, 56 non-dippers, 14 extreme dippers, 14 reverse dippers)...
September 2016: Journal of Hypertension
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"