Results 1 to 10 of about 4,433,818 (382)
Circulation Cardiovascular Imaging, 2010 Background—The role, interplay, and relative importance of the multifactorial hemodynamic and myocardial mechanisms causing dysfunction of the Fontan circulation remain incompletely understood.
B. Schmitt +8 more
semanticscholar +1 more source
Parameter inference in a computational model of hemodynamics in pulmonary hypertension [PDF]
arXiv, 2021 Pulmonary hypertension (PH), defined by a mean pulmonary arterial pressure (mPAP) $>$ 20 mmHg, is characterized by increased pulmonary vascular resistance and decreased pulmonary arterial compliance. There are few measurable biomarkers of PH progression, but a conclusive diagnosis of the disease requires invasive right heart catheterization (RHC ...
arxiv
Sultan Qaboos University Medical Journal, 2016 Objectives: This study aimed to examine the association between indicators of arterial resistance occurring late in the first trimester and the subsequent development of pregnancy-related hypertension.
Pralhad Kushtagi, Anoosha Emani
doaj +1 more source
Passive phloem loading and long-distance transport in a synthetic tree-on-a-chip [PDF]
Nature Plants 3, 17032 (2017), 2017 Vascular plants rely on differences of osmotic pressure to export sugars from regions of synthesis (mature leaves) to sugar sinks (roots, fruits). In this process, known as M\"unch pressure flow, the loading of sugars from photosynthetic cells to the export conduit (the phloem) is crucial, as it sets the pressure head necessary to power long-distance ...
arxiv +1 more source
New England Journal of Medicine, 1998 BACKGROUND Primary (idiopathic) pulmonary hypertension is a progressive, fatal disease. Conventional therapy with anticoagulant and vasodilator drugs may improve symptoms and survival among selected patients, but there is no evidence that the disease can
V. McLaughlin +3 more
semanticscholar +1 more source
Antioxidants, 2022 Blood pressure is determined by cardiac output and peripheral vascular resistance. The L-type voltage-gated Ca2+ (Cav1.2) channel in small arteries and arterioles plays an essential role in regulating Ca2+ influx, vascular resistance, and blood pressure.
Xiang-Qun Hu, Lubo Zhang
doaj +1 more source
Advanced Biomedical Research, 2015 Background: The pulsatility index (PI), measured by transcranial Doppler (TCD) ultrasonography, can reflect vascular resistance induced by cerebral small-vessel disease (SVD).
Abbas Ghorbani +2 more
doaj +1 more source
Extraction of Vascular Wall in Carotid Ultrasound via a Novel Boundary-Delineation Network [PDF]
arXiv, 2022 Ultrasound imaging plays an important role in the diagnosis of vascular lesions. Accurate segmentation of the vascular wall is important for the prevention, diagnosis and treatment of vascular diseases. However, existing methods have inaccurate localization of the vascular wall boundary.
arxiv
Antimicrobial Resistance and Infection Control, 2020 Introduction Antimicrobial resistance is a major public health threat. Antimicrobial stewardship (AMS) is one of the key strategies to overcome resistance, but robust evidence on the effect of specific interventions is lacking.
Nuno Rocha-Pereira +8 more
doaj +1 more source
Sensitivity analysis and uncertainty quantification of 1D models of the pulmonary circulation [PDF]
, 2018 This study combines a one-dimensional (1D) model with micro-CT imaging and hemodynamic data to quantify uncertainty of flow and pressure predictions in the pulmonary arteries in a control and hypoxia induced hypertensive mouse. We use local and global sensitivity and correlation analysis to determine parameters that can be inferred from the model and ...
arxiv +1 more source