Results 81 to 90 of about 256,838 (285)
Surface Metrology of Cerebral Arteries Luminal Surface [PDF]
arXiv, 2023 Atherosclerotic lesions within carotid and cerebral vessels are likely to influence hemodynamics and manifest into vascular pathologies, including Alzheimers Disease and ischemic stroke. Hemodynamics are influenced by changes in luminal diameter of vessels and wall shear stress derived from turbulence, which directly relates to the surface topography ...
arxiv
Global sensitivity analysis informed model reduction and selection applied to a Valsalva maneuver model [PDF]
, 2020 In this study, we develop a methodology for model reduction and selection informed by global sensitivity analysis (GSA) methods. We apply these techniques to a control model that takes systolic blood pressure and thoracic tissue pressure data as inputs and predicts heart rate in response to the Valsalva maneuver (VM).
arxiv +1 more source
ANZ Journal of Surgery, EarlyView.Abstract Purpose This study investigated whether previous COVID severity and vaccination affected subsequent elective postsurgical mortality and readmission rates at 30, 90 and 365 days. Methods 21 855 veterans were divided into two cohorts, a no‐COVID (NC) cohort of 19 338 patients and a previous COVID cohort of 2547 patients.
Henyah W. Dardir +4 more
wiley +1 more source
Time From Symptoms to Carotid Endarterectomy or Stenting and Perioperative Risk
Stroke, 2015 Background and Purpose— Prior meta-analysis showed that carotid endarterectomy benefits decline with increasing surgical delay following symptoms. For symptomatic patients in the Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST), we ...
J. Meschia +8 more
semanticscholar +1 more source
Clinical significance of internal carotid artery restenosis following carotid endarterectomy [PDF]
Srpski Arhiv za Celokupno Lekarstvo, 2012 Carotid endarterectomy has been established as the preferred treatment for symptomatic and asymptomatic high-grade carotid stenosis. Internal carotid artery restenosis is defined as a specific entity with a great clinical significance in carotid ...
Radak Đorđe +3 more
doaj +1 more source
Computational Fluid Dynamic Simulations In a Model of a Carotid Bifurcation Under Steady Flow Conditions [PDF]
arXiv, 2020 Strokes are still one of the leading causes for death after heart diseases and cancer in all over the world. Most strokes happen because an artery that carries blood uphill from the heart to the head gets clogged. Most of the time, as with heart attacks, the problem is atherosclerosis, hardening of the arteries, calcified buildup of fatty deposits on ...
arxiv
Deep Learning-Based Carotid Artery Vessel Wall Segmentation in Black-Blood MRI Using Anatomical Priors [PDF]
arXiv, 2021 Carotid artery vessel wall thickness measurement is an essential step in the monitoring of patients with atherosclerosis. This requires accurate segmentation of the vessel wall, i.e., the region between an artery's lumen and outer wall, in black-blood magnetic resonance (MR) images.
arxiv
Hydrocortisone supresses inflammatory activity of metalloproteinase - 8 in carotid plaque
Brazilian Journal of Cardiovascular Surgery, 2015 Objective:Matrix metalloproteinases are inflammatory biomarkers involved in carotid plaque instability. Our objective was to analyze the inflammatory activity of plasma and carotid plaque MMP-8 and MMP-9 after intravenous administration of hydrocortisone.
Sthefano Atique Gabriel +6 more
doaj +1 more source
Segmentation of carotid vessel wall using U-Net and segmentation average network [PDF]
arXiv, 2020 Segmentation of carotid vessel wall is required in vessel wall volume (VWV) and local vessel-wall-plus-plaque thickness (VWT) quantification of the carotid artery. Manual segmentation of the vessel wall is time-consuming and prone to interobserver variability. In this paper, we proposed a convolution neural network to segment the common carotid artery (
arxiv
Journal of Advanced Nursing, EarlyView.Abstract Aims Previous studies have shown the COVID‐19 pandemic was associated with reductions in volume across a spectrum of non‐SARS‐CoV‐2 hospitalizations. In the present study, we examine the impact of the pandemic on patient safety and quality of care. Design This is a retrospective population‐based study of discharge abstracts. Methods We applied
Steven Habbous +4 more
wiley +1 more source