Results 41 to 50 of about 32,185 (293)

Cerebrovascular reactivity in migraineurs

Headache Medicine, 2011
Cerebrovascular reactivity (CR) assessed by transcranial Doppler (TCD) has been evaluated among migraineurs with conflicting results. We assessed the CR using the breath holding index (BHI) among 228 migraineurs during ictal or interictal phase and 56 controls.
Arthur de Carvalho Jatobá e Sousa, Ciro Martins Gomes, Rodolfo de Souza Coelho, Ricardo Afonso Teixeira   +3 more
openaire   +1 more source

Impaired Cerebrovascular Reactivity in Multiple Sclerosis [PDF]

JAMA Neurology, 2014
Cerebrovascular reactivity (CVR) is an inherent indicator of the dilatory capacity of cerebral arterioles for a vasomotor stimulus for maintaining a spontaneous and instant increase of cerebral blood flow (CBF) in response to neural activation. The integrity of this mechanism is essential to preserving healthy neurovascular coupling; however, to our ...
Olga, Marshall, Hanzhang, Lu, Jean-Christophe, Brisset, Feng, Xu, Peiying, Liu, Joseph, Herbert, Robert I, Grossman, Yulin, Ge   +7 more
openaire   +2 more sources

The Reproducibility of Cerebrovascular Reactivity Across MRI Scanners [PDF]

Frontiers in Physiology, 2021
Cerebrovascular reactivity (CVR) is defined as the ratio of the cerebral blood flow (CBF) response to an increase in a vasoactive stimulus. We used changes in blood oxygenation level-dependent (BOLD) MRI as surrogates for changes of CBF, and standardized quantitative changes in arterial partial pressure of carbon dioxide as the stimulus.
Olivia Sobczyk, Olivia Sobczyk, Ece Su Sayin, Ece Su Sayin, Kevin Sam, Julien Poublanc, James Duffin, James Duffin, Joseph A. Fisher, Joseph A. Fisher, Joseph A. Fisher, David J. Mikulis, David J. Mikulis   +12 more
openaire   +3 more sources

Factors associated with cardiovascular events after simultaneous liver–kidney transplant from the US Multicenter Simultaneous Liver–Kidney Transplant Consortium

Hepatology Communications, EarlyView., 2022
Abstract Cardiovascular disease is a leading complication after both liver and kidney transplantation. Factors associated with and rates of cardiovascular events (CVEs) after simultaneous liver–kidney transplant (SLKT) are unknown. This was a retrospective cohort study of adult SLKT recipients between 2002 and 2017 at six centers in six United Network ...
Jennifer Jo, Gonzalo Crespo, Dyanna Gregory, Jasmine Sinha, Jiaheng Xie, Min Zhang, John Magee, Pranab Barman, Yuval A. Patel, Aaron Schluger, Kara Walters, Scott Biggins, Natalia Filipek, Giuseppe Cullaro, Randi Wong, Jennifer C. Lai, Gabriel J. Perreault, Elizabeth C. Verna, Pratima Sharma, Lisa B. VanWagner   +19 more
wiley   +1 more source

Evaluation of cerebrovascular reactivity in chronic hepatitis C patients using transcranial color Doppler.

PLoS ONE, 2019
Hepatitis C viral (HCV) infection is associated with systemic inflammation and metabolic complications that might predispose patients to atherosclerosis, including cerebrovascular atherosclerosis.
Mirela Pavicic Ivelja, Ivo Ivic, Kresimir Dolic, Antonio Mestrovic, Nikola Perkovic, Stipan Jankovic   +5 more
doaj   +1 more source

Associations Between Intracranial Pressure Extremes and Continuous Metrics of Cerebrovascular Pressure Reactivity in Acute Traumatic Neural Injury: A Scoping Review

Neurotrauma Reports
Cerebrovascular pressure reactivity plays a key role in maintaining constant cerebral blood flow. Unfortunately, this mechanism is often impaired in acute traumatic neural injury states, exposing the already injured brain to further pressure-passive ...
Kevin Y. Stein, Fiorella Amenta, Logan Froese, Alwyn Gomez, Amanjyot Singh Sainbhi, Nuray Vakitbilir, Younis Ibrahim, Abrar Islam, Tobias Bergmann, Izabella Marquez, Frederick A. Zeiler   +10 more
doaj   +3 more sources

Exercise breaks prevent attenuation in cerebrovascular function following an acute bout of uninterrupted sitting in healthy children

Experimental Physiology, 2023
The purpose of this study was to examine the effect of an acute bout of prolonged sitting with and without exercise breaks on cerebrovascular function in 7‐ to 13‐year‐old children.
Christine M. Tallon, Daniela Nowak‐Flück, Mathew G. Reiger, Daniel J. Green, Mark S. Tremblay, Phil N. Ainslie, Ali M. McManus   +6 more
doaj   +1 more source

The effect of age on cerebral blood flow responses during repeated and sustained stand to sit transitions

Physiological Reports, 2020
Introduction Aging is associated with impaired cerebrovascular blood flow and function, attributed to reduced vasodilatory capacity of the cerebrovascular network.
Timo Klein, Tom G. Bailey, Petra Wollseiffen, Stefan Schneider, Christopher D. Askew   +4 more
doaj   +1 more source

Factors affecting the determination of cerebrovascular reactivity

Brain and Behavior, 2014
AbstractBackground and PurposeCerebrovascular reactivity (CVR), measures the ability of the cerebrovasculature to respond to vasoactive stimuli such as CO2. CVR is often expressed as the ratio of cerebral blood flow change to CO2 change. We examine several factors affecting this measurement: blood pressure, stimulus pattern, response analysis and ...
Regan, Rosemary E, Fisher, Joseph A, Duffin, James   +2 more
openaire   +2 more sources

Effectiveness of a Novel Low‐Density Lipoprotein Apheresis Device Rheocarna in Patients Undergoing Hemodialysis With Chronic Limb‐Threatening Ischemia: A Single‐Center Retrospective Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic limb‐threatening ischemia (CLTI) is a severe form of lower‐extremity artery disease characterized by distal lesions and microcirculatory impairment, limiting revascularization efficacy. Rheocarna is a direct hemoperfusion low‐density lipoprotein (LDL) adsorption device with potential rheological and anti‐inflammatory ...
Kunihiro Ishioka, Takayasu Ohtake, Kei Ohmori, Chika Shibuya, Tomoki Tsukahara, Mizuki Yamano, Yasuhiro Mochida, Machiko Oka, Kyoko Maesato, Yusuke Tsukamoto, Hidekazu Moriya, Sumi Hidaka, Shuzo Kobayashi   +12 more
wiley   +1 more source