Results 91 to 100 of about 103,155 (374)

Validation of Aortic Blood Flow Simulations During Extracorporeal Circulation Using Phase Contrast Magnetic Resonance Imaging

Artificial Organs, EarlyView.
This is the first study assessing in vivo blood flow profiles during extracorporeal circulation (ECC) scenarios. Magnetic resonance imaging data served for the calibration of computational fluid dynamics algorithms, enabling accurate replication of the hemodynamic conditions.
Anna Kathrin Assmann, Sinje Reimers, Jonah S. Schrauder, Lei Qu, Xiangge Yin, Amir Moussavi, Artur Lichtenberg, Susann Boretius, Michael Neidlin, Alexander Assmann   +9 more
wiley   +1 more source

Changes in Hemodynamic Responses in Chronic Stroke Survivors Do Not Affect fMRI Signal Detection in a Block Experimental Design [PDF]

, 2013
The use of canonical functions to model BOLD-fMRI data in people post-stroke may lead to inaccurate descriptions of task-related brain activity. The purpose of this study was to determine whether the spatiotemporal profile of hemodynamic responses (HDRs)
Promjunyakul, Nutta-on, Schindler-Ivens, Sheila, Schmit, Brian D.   +2 more
core   +2 more sources

Shifting concepts of autoregulation: Commentary to ‘Static autoregulation in humans' [PDF]

Journal of Cerebral Blood Flow & Metabolism
Advances in imaging techniques have transformed our understanding of cerebral autoregulation. Older imaging techniques provided measurements of cerebral blood flow (CBF) that reflected the average CBF over a window of 10–20 minutes. A key finding, dating back to 1959, was that CBF remained more or less stable over a remarkably wide range of changes in
openaire   +2 more sources

The impact of coronary artery bypass grafting on the short‐ and long‐term development and progression of diabetic retinopathy: A Danish national matched cohort study

Acta Ophthalmologica, EarlyView.
Abstract Purpose Diabetic retinopathy (DR) is a frequent long‐term complication of diabetes. While hemodynamic changes are known risk factors for DR, the effect of coronary artery bypass grafting (CABG) on the development of DR is poorly investigated.
Lukas Greve Maschoreck, Lonny Stokholm, Frederik Nørregaard Pedersen, Nis Andersen, Jens Andresen, Toke Bek, Sebastian Dinesen, Javad Hajari, Steffen Heegaard, Kurt Højlund, Caroline Schmidt Laugesen, Ryo Kawasaki, Sören Möller, Katja Christina Schielke, Yousif Subhi, Anne Suhr Thykjær Petersen, Jakob Grauslund   +16 more
wiley   +1 more source

Prediction of poor prognosis using the peak systolic velocity and early diastolic velocity of the central retinal artery in patients with post‐cardiac arrest syndrome

Hong Kong Journal of Emergency Medicine
Introduction Monitoring intracranial pressure (ICP) in patients with post‐cardiac arrest syndrome (PCAS) is crucial for effective management and prognosis assessment. However, continuous ICP monitoring is rarely practiced.
Wook Jin Choi, Jae Hoon Lee
doaj   +1 more source

Monitoring of Cerebral Blood Flow Autoregulation after Cardiac Arrest

Medicina
Background: Cardiac arrest remains one of the leading causes of death. After successful resuscitation of patients in cardiac arrest, post-cardiac arrest syndrome develops, part of it being an impaired cerebral blood flow autoregulation.
Rok Petrovčič, Martin Rakusa, Andrej Markota   +2 more
doaj   +1 more source

The ntrPR Operon of Sinorhizobium meliloti Is Organized and Functions as a Toxin-Antitoxin Module

Molecular Plant-Microbe Interactions, 2006
The chromosomal ntrPR operon of Sinorhizobium meliloti encodes a protein pair that forms a toxin-antitoxin (TA) module, the first characterized functional TA system in Rhizobiaceae. Similarly to other bacterial TA systems, the toxin gene ntrR is preceded
Monica Bodogai, Szilamér Ferenczi, Denys Bashtovyy, Paul Miclea, Péter Papp, Ilona Dusha   +5 more
doaj   +1 more source

Venous sinus stenting improves cerebral autoregulation in a patient with venous sinus stenosis: a case report

BMC Neurology, 2020
Background Venous sinus stenosis (VSS) is a type of cerebral venous vascular disease. Cerebral autoregulation is an indicator of cerebral arterial function. The cerebral circulatory system is composed of the venous system and arterial system.
Meiyan Jia, Zhen-Ni Guo, Hang Jin, Xiuli Yan, Mingchao Shi, Xin Sun, Hongyin Ma, Shan Lv, Yi Yang   +8 more
doaj   +1 more source

Autoregulation in the Biosynthesis of Ribosomes [PDF]

Molecular and Cellular Biology, 2003
The synthesis of ribosomes in Saccharomyces cerevisiae consumes a prodigious amount of the cell's resources and, consequently, is tightly regulated. The rate of ribosome synthesis responds not only to nutritional cues but also to signals dependent on other macromolecular pathways of the cell, e.g., a defect in the secretory pathway leads to severe ...
Yu, Zhao, Jung-Hoon, Sohn, Jonathan R, Warner   +2 more
openaire   +2 more sources

Neonates born at term with periventricular haemorrhagic infarction: Risk factors and clinical presentation

Developmental Medicine &Child Neurology, EarlyView.
This case series describes infants born near term with periventricular hemorrhagic infarction (PVHI), highlighting seizures as a common early symptom. Neonatal complications during delivery and pro‐thrombotic genetic mutations were slightly more common. MRI‐classified involvement was predominantly in the caudate vein territory.
Aleksandra Zaykova, Jeroen Dudink, Floris Groenendaal, Maarten H. Lequin, Manon J.N.L. Benders, Maria Luisa Tataranno, Elise Roze   +6 more
wiley   +1 more source