Search results for "Wave velocity"
showing 10 items of 96 documents
Reliability of Hemodynamic Parameters Measured by a Novel Photoplethysmography Device
2011
Three channel photoplethysmography (PPG) signal pulse wave studies of the leg’s conduit arteries during rest conditions were performed. The obtained data of each channel showed similar values, proving arterial PPG as a reliable and repeatable method to assess arterial waveform parameters. A validation experiment was carried out by acquiring signals from three identical IR PPG sensors, which were placed on different sites over the leg’s conduit arteries during rest conditions. Coefficients of variation (CV) were calculated at a 95% confidence interval by comparing results of each subject during multiple attempts. This data processing leads us to certain criteria of improvements in our method…
Cardiovascular Responses to Muscle Stretching: A Systematic Review and Meta-analysis
2021
AbstractThe aim of this study will be to review the current body of literature to understand the effects of stretching on the responses of the cardiovascular system. A literature search was performed using the following databases: Scopus, NLM Pubmed and ScienceDirect. Studies regarding the effects of stretching on responses of the cardiovascular system were investigated. Outcomes regarded heart rate(HR), blood pressure, pulse wave velocity (PWV of which baPWV for brachial-ankle and cfPWV for carotid-femoral waveforms), heart rate variability and endothelial vascular function. Subsequently, the effects of each outcome were quantitatively synthetized using meta-analytic synthesis with random-…
ASSOCIAZIONE TRA INDICE DI RESISTENZA INTRARENALE E STIFFNESS AORTICA IN SOGGETTI CON MALATTIA RENALE CRONICA
2014
RAZIONALE. L’indice di resistenza intraparenchimale renale (IR), valutato mediante eco-color-Doppler, è stato classicamente utilizzato quale valido strumento di valutazione diagnostica e prognostica delle patologie renali. Studi recenti suggeriscono che i parametri emodinamici intrarenali, e l’IR in particolare, possano essere anche associati ad alterazioni vascolari sistemiche, nonché ad un incremento del rischio cardiovascolare. Tuttavia, dati contrastanti esistono in letteratura circa l'associazione indipendente tra IR e pulse wave velocity aortica (PWVa), indice di stiffness arteriosa, nonché espressione di danno d'organo subclinico. Scopo di questo studio è stato dunque quello di valut…
The Effect of Periodontal Treatment on the Reactive Hyperemia Index. A 1-Year Follow-Up Pilot Study
2022
BackgroundPeriodontitis is a chronic multifactorial inflammatory disease of the supportive tissues of the teeth. In more recent years, remarkable epidemiological and pathophysiological associations between periodontitis and cardiovascular disease (CVD) have been presented. Whether or not treatment of periodontitis is valuable for primary or secondary prevention of cardiovascular disease, has not yet been fully established. In this practice-based pilot study we focused on primary prevention of cardiovascular disease, by investigating the effect of periodontal treatment on the earliest detectable stage of CVD; endothelial dysfunction.MethodsOtherwise healthy periodontitis and non-periodontiti…
Prospective relationship of change in ideal cardiovascular health status and arterial stiffness: the Cardiovascular Risk in Young Finns Study.
2014
Background In 2010, the American Heart Association defined ideal cardiovascular health as the simultaneous presence of 4 favorable health behaviors (nonsmoking, ideal body mass index, physical activity at goal, and dietary pattern that promotes cardiovascular health) and 3 favorable health factors (ideal levels of total cholesterol, blood pressure, and fasting glucose). The association between a change in ideal cardiovascular health status and pulse wave velocity, a surrogate marker of cardiovascular disease, has not been reported. Methods and Results The study cohort consisted of 1143 white adults from the Cardiovascular Risk in Young Finns Study who were followed for 21 years since basel…
In HCV-related liver cirrhosis, local pulse wave velocity increases and in decompensated patients correlates with poorer survival
2018
BackgroundCirrhotic cardiomyopathy (CCM) refers to cardiac dysfunction in patients with liver cirrhosis, in the absence of other known cardiac disease.MethodsControl group and patients diagnosed of liver cirrhosis without known cardiac disease or hepatocellular carcinoma were enrolled for this clinical observation study. Patients with diabetes mellitus, hypertension were excluded. Absolute global longitudinal strain, one-point carotid pulse wave velocity (one-point PWV) and various parameters were measured in resting status.ResultsThere were 29 participants in the control group and 80 patients in the liver cirrhosis group. 27.8% of cirrhotic patients presented with normal systolic but abnor…
Comparison of two techniques (in vivo and ex-vivo) for evaluating the elastic properties of the ascending aorta: Prospective cohort study.
2021
Introduction Aneurysms of the ascending aorta (AA) correspond to a dilatation of the ascending aorta that progressively evolves over several years. The main complication of aneurysms of the ascending aorta is type A aortic dissection, which is associated with very high rates of morbidity and mortality. Prophylactic ascending aorta replacement guidelines are currently based on maximal AA diameter. However, this criterion is imperfect. Stretching tests on the aorta carried out ex-vivo make it possible to determine the elastic properties of healthy and aneurysmal aortic fragments (tension test, resistance before rupture). For several years now, cardiac magnetic resonance imaging (MRI) has pro…
Thoracic Aortic Intima-Media Thickness in Preschool Children Born Small for Gestational Age
2018
To assess thoracic aortic intima-media thickness (aIMT) as a marker of thoracic aortic remodeling in children born small for gestational age (SGA).We assessed thoracic aIMT, carotid intima-media thickness (cIMT), and pulse wave velocity (PWV) in 239 patients (117 SGA; 122 appropriate for gestational age controls) age 6-8 years. Each SGA participant was matched 1:1 based on sex, gestational age, and birth date. Thoracic aIMT was determined by 2-dimensional transthoracic echocardiography.SGA children showed a significant increase in both aIMT (0.89 mm [0.12] vs 0.79 mm [0.11], P .001) and cIMT (.50 mm [0.05] vs 0.49 mm [0.04], P .001) compared with appropriate for gestational age controls, …
Cardiovascular Toxicity in Cancer Patients Treated with Tyrosine Kinase Inhibitors: A Real-World Single-Center Experience
2019
<b><i>Background:</i></b> Target therapy can cause various cardiovascular complications. The aim of this study was to evaluate the burden of cardiovascular complications related to treatment with anti-BCR-ABL tyrosine kinase inhibitors (TKIs) and to determine if there are differences between the latest- and first-generation TKIs. <b><i>Methods:</i></b> A retrospective observational study was carried out on 55 patients (39 men, 16 women; mean age ± SD: 58 ± 11 years) treated with TKIs targeting Bcr-Abl for a median period of 3.5 years. Patients were divided in two groups according to the type of treatment. Group A included patients treated with…
Automatic or manual arterial path for the ankle-brachial differences pulse wave velocity
2018
Este artículo se encuentra disponible en la página web de la revista en la siguiente URL: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0206434 An automated method for measuring arterial path length with devices that determine pulse wave velocity (PWV) in peripheral arteries is frequently applied. We aimed to compare arterial path length measurements based on mathematical height-based formulas with those measured manually and to assess whether the ankle-brachial difference (abD-PWV) measured with the VOPITB device is comparable to that obtained by manual measurements. In 245 patients, a metric measuring tape was used to determine the arterial path length from the suprast…