Results 41 to 50 of about 524,720 (204)

Mapping Cerebrovascular Reactivity Impairment in Patients With Symptomatic Unilateral Carotid Artery Disease

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2021
Background Comprehensive hemodynamic impairment mapping using blood oxygenation‐level dependent (BOLD) cerebrovascular reactivity (CVR) can be used to identify hemodynamically relevant symptomatic unilateral carotid artery disease.
Martina Sebök, Christiaan Hendrik Bas van Niftrik, Sebastian Winklhofer, Susanne Wegener, Giuseppe Esposito, Christoph Stippich, Andreas Luft, Luca Regli, Jorn Fierstra   +8 more
doaj   +1 more source

Agreement of Bioreactance Cardiac Output Monitoring With Thermodilution in Healthy Standing Horses

Frontiers in Veterinary Science, 2021
Bioreactance is the continuous analysis of transthoracic voltage variation in response to an applied high frequency transthoracic current and was recently introduced for non-invasive cardiac output measurement (NICOM).
Klaus Hopster, Samuel D. A. Hurcombe
doaj   +1 more source

Estimating effective connectivity in linear brain network models

, 2017
Contemporary neuroscience has embraced network science to study the complex and self-organized structure of the human brain; one of the main outstanding issues is that of inferring from measure data, chiefly functional Magnetic Resonance Imaging (fMRI ...
Bertoldo, Alessandra, Chiuso, Alessandro, Prando, Giulia, Zorzi, Mattia   +3 more
core   +1 more source

Disambiguating the role of blood flow and global signal with partial information decomposition [PDF]

, 2019
Global signal (GS) is an ubiquitous construct in resting state functional magnetic resonance imaging (rs-fMRI), associated to nuisance, but containing by definition most of the neuronal signal.
Calhoun, Vince D., Colenbier, Nigel, Marinazzo, Daniele, Poldrack, Russell A., Uddin, Lucina Q., Van de Steen, Frederik   +5 more
core   +2 more sources

The effect of combined conventional and modified ultrafiltration on mechanical ventilation and hemodynamic changes in congenital heart surgery

Journal of Research in Medical Sciences, 2016
Background: Cardiopulmonary bypass is associated with increased fluid accumulation around the heart which influences pulmonary and cardiac diastolic function.
Mohsen Ziyaeifard, Azin Alizadehasl, Nahid Aghdaii, Poupak Rahimzadeh, Gholamreza Masoumi, Samad EJ Golzari, Mostafa Fatahi, Farhad Gorjipur   +7 more
doaj   +1 more source

Anesthetic challenges for pheochromocytoma surgery in pediatric patients: A case series

Saudi Journal of Anaesthesia, 2023
Pheochromocytoma in children is an exceptionally uncommon cause of hypertension in this age group. These tumors pose a significant threat of adverse cardiovascular events during the perioperative phase.
Raksha Vyas, Ankur Sharma, Shilpa Goyal, Varuna Vyas, Nikhil Kothari   +4 more
doaj   +1 more source

Hemodynamically informed parcellation of cerebral FMRI data [PDF]

, 2014
Standard detection of evoked brain activity in functional MRI (fMRI) relies on a fixed and known shape of the impulse response of the neurovascular coupling, namely the hemodynamic response function (HRF).
Ciuciu, Philippe, Forbes, Florence, Frau-Pascual, Aina, Vincent, Thomas   +3 more
core   +5 more sources

Hemodynamics of Stent Implantation Procedures in Coronary Bifurcations: an in vitro study [PDF]

, 2016
Stent implantation in coronary bifurcations presents unique challenges and currently there is no universally accepted stent deployment approach. Despite clinical and computational studies, to date, the effect of each stent implantation method on the ...
Brindise, Melissa C., Burzotta, Francesco, Chiastra, Claudio, Migliavacca, Francesco, Vlachos, Pavlos P.   +4 more
core   +5 more sources

Physiological Gaussian Process Priors for the Hemodynamics in fMRI Analysis

, 2020
Background: Inference from fMRI data faces the challenge that the hemodynamic system that relates neural activity to the observed BOLD fMRI signal is unknown.
Eklund, Anders, Villani, Mattias, Wilzén, Josef   +2 more
core   +1 more source

Hypotension prediction index guided goal-directed therapy to reduce postoperative acute kidney injury during major abdominal surgery: study protocol for a multicenter randomized controlled clinical trial

Trials
Background Acute kidney injury (AKI) is a significant postoperative complication associated with increased mortality and hospital costs. Hemodynamic strategies, such as goal-directed therapy, might reduce AKI risk.
Javier Ripollés-Melchor, Laura Carrasco-Sánchez, José L. Tomé-Roca, César Aldecoa, Andres Zorrilla-Vaca, Juan V. Lorente-Olazábal, María J. Colomina, Ana Pérez, Juan I. Jiménez-López, Rosalía Navarro-Pérez, Alfredo Abad-Gurumeta, Manuel I. Monge-García, the HYT Study Group   +12 more
doaj   +1 more source