Search results for "Artery"

A Non-Local Mode-I Cohesive Model for Ascending Thoracic Aorta Dissections (ATAD)

2018

This paper presents a non-local interface mechanical model to describe aortic dissection. In this regard, the mode-I debonding problem based on a cohesive zone modeling is endowed with non-local terms to include long-range interactions that are present in multi-layered biological tissue. Such non-local effects are related to the collagen fibers that transmit forces between non-adjacent elements. Numerical simulations are provided with different values of the non-local parameters in order to show the effect of the non-locality during the debonding processes.

Extracellular matrix fiber microarchitecture is region-specific in bicuspid aortic valve-associated ascending aortopathy

2016

Abstract Objective Ascending thoracic aortic aneurysm (ATAA) in patients with bicuspid aortic valve (BAV) commonly dilate asymmetrically compared with patients with tricuspid aortic valve (TAV). This discrepancy in aneurysm geometry led us to hypothesize that microarchitectural differences underlie the observed asymmetric dilatation pattern. The purpose of this study was to characterize the microarchitectural distinctions of the extracellular matrix of the 2 phenotypes with a focus on the proportion of radially oriented elastin and collagen fibers in different circumferential aortic regions. Methods Aortic tissue rings were obtained just distal to the sinotubular junction from patients with…

Photoplethysmography Analysis of Artery Properties in Patients with Cardiovascular Diseases

2008

In this study arterial parameters of healthy subjects were compared to those of patients with cardiovascular diseases. The photoplethysmography (PPG) measurements of blood volume pulsations have been performed. Using a novel algorithm for analysis of simultaneously measured ear and finger PPG signals, arterial parameters were evaluated in representative groups of healthy subjects and patients with cardiovascular diseases. Digital volume pulse (DVP), pulse cycle duration (T), augmentation index (AIx), reflection index (RI) and transit time of reflected wave (RTT) were evaluated in every heartbeat cycle. Correlations between the AIx and RI, T and RTT, AIx and standard deviation of AIx, RTT an…

Isolated coronary anomalies and sudden death in the young

2011

Digitale kommunikasjonsløsninger for samhandling mellom koronar bypassopererte pasienter og helsepersonell på spesialistsykehus etter utskrivelse til…

2016

Masteroppgave i helse- og sosialinformatikk- Universitetet i Agder, 2016 Background In Norway there are expectations of further development and strategic investment in information technology within the health care system. Persons who undergo a coronary artery bypass graft (CABG) surgery are in need of information and guidance related to problems that may arise after they have returned home from hospital. Purpose The purpose of this project was to explore to what extent digital communication solutions might meet the need for information and guidance from health personnel experienced by patients who had undergone a CABG surgery, after discharge from the specialist hospital. Additionally, it w…

Coronary artery disease screening

2008

Correlation Analysis of Anti-Cardiolipin Antibody/D Dimer/C-Reactive Protein and Coronary Artery Lesions/Multiple-Organ Damage in Children With Kawas…

2021

Aim: Kawasaki disease (KD) is a systemic vasculitis with unknown etiology. In addition to cardiovascular system involvement, it can also have other multiple organs involved. This study is aimed at investigating the correlation between anti-cardiolipin antibody (ACA)/D dimer/C reactive protein (CRP) and coronary artery lesions (CAL)/multiple-organ lesions in children with KD.Methods: Retrospective analysis was performed in 284 KD/IKD patients from May 2015 to April 2016. Among them, 175 were males (61.6%), with average age of 2 years and 5 months old. Patients were divided into ACA+ group and ACA- group, elevated D dimer group (DDE) and normal D dimer group (DDN), and coronary artery injury …

Remodeled ostial atherosclerotic plaque in a single coronary artery demonstrated by computed tomography coronary angiography

2015

Nurse-led counseling for coronary artery disease patients : A 1-year follow-up study

2021

Nurse‐led counseling and systematic follow‐up has been shown to reduce cardiovascular risk factor levels. The study aim was to investigate if cardiovascular risk factor levels could be reduced in patients with coronary artery disease with a nurse‐led intervention and to report patients’ evaluations of nurse‐led counseling. The study design was a real‐life longitudinal follow‐up counseling intervention. Data were collected from November 2017 to May 2020. The nurse‐led intervention and patients’ follow‐up time was one year. Of the 78 patients recruited, 74 completed the study. The most significant findings were in the levels of total cholesterol, low‐density lipoprotein cholesterol and trigly…

Efficacy of non-surgical periodontal treatment on patients with coronary artery disease: a meta-analysis of randomized controlled trials

2022

Coronary artery disease (CAD) is defined as one of the most common cardiovascular diseases (CVDs). Periodontitis is one of the risk factors for CAD. PubMed, Embase and Cochrane Library databases were carefully and thoroughly retrieved until October 2021. On the basis of the inclusion and exclusion criteria, eligible articles were selected strictly to identify randomized controlled trials (RCTs). Using Cochran's Q statistic, Review Manager 5.4 and Stata 16, data were extracted, and a comprehensive analysis was carried out. Six RCTs of 619 patients were included in this study, including 360 in the intervention group (IG) and 259 in the control group (CG). Meta-analysis showed significant diff…