Results 221 to 230 of about 28,548 (239)

Cerebrovascular Reactivity in Atrial Fibrillation

The FASEB Journal, 2017
Atrial fibrillation is associated with substantial risk of severe stroke, cognitive decline and dementia. Elevated plasma biomarkers of vascular damage/dysfunction and reduced conduit (brachial) artery function have been reported in atrial fibrillation.
James P Fisher, Igor Dutra Braz, Samuel J E Lucas, Louisa Edwards, Johannes J van Lieshout, Gregory Y H Lip   +5 more
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Cerebrovascular Reactivity in Normal Pregnancy and Preeclampsia

Obstetrics & Gynecology, 2001
To compare cerebrovascular reactivity in normotensive and preeclamptic pregnant women.Transcranial Doppler ultrasound was used to measure peak, end-diastolic, and mean velocities in the middle cerebral arteries of 45 normotensive and 36 preeclamptic women in the third trimester.
S, Riskin-Mashiah, M A, Belfort, G R, Saade, J A, Herd   +3 more
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Cerebrovascular Reactivity Impairment after Sport-Induced Concussion

Medicine & Science in Sports & Exercise, 2011
This study evaluated cerebrovascular reactivity (CVR) after a sport-induced concussion, also called mild traumatic brain injury (mTBI), by monitoring middle cerebral artery blood velocity (vMCA) with transcranial Doppler ultrasonography and simultaneous end-tidal carbon dioxide (PETCO(2)) measurements.Thirty-one athletes (16-25 yr old) participated in ...
Trevor K, Len, J Patrick, Neary, Gordon J G, Asmundson, David G, Goodman, Bruce, Bjornson, Yagesh N, Bhambhani   +5 more
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Cerebrovascular CO2 reactivity after carotid artery occlusion

Journal of Neurosurgery, 1988
✓ Cerebral blood flow (CBF) was measured in 39 men at normocapnia and after 5% CO2 inhalation using the xenon-133 technique. Twenty-three patients had unilateral carotid artery occlusion with no angiographic evidence of contralateral carotid artery stenosis or ophthalmic collateral flow. Eleven of these patients had undergone extracranial-intracranial (
G L, Clifton, H T, Haden, J R, Taylor, M, Sobel   +3 more
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Cerebrovascular reactivity and dynamic autoregulation in tetraplegia

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2010
Humans with spinal cord injury have impaired cardiovascular function proportional to the level and completeness of the lesion. The effect on cerebrovascular function is unclear, especially for high-level lesions. The purpose of this study was to evaluate the integrity of dynamic cerebral autoregulation (CA) and the cerebrovascular reactivity in ...
Luke C, Wilson, James D, Cotter, Jui-Lin, Fan, Rebekah A I, Lucas, Kate N, Thomas, Philip N, Ainslie   +5 more
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Reactive oxygen species and ischemic cerebrovascular disease

Neurochemistry International, 2012
Stroke is an emerging major health problem often resulting in death or disability. Hyperlipidemia, high blood pressure and diabetes are well established risk factors. Endothelial dysfunction associated with these risk factors underlies pathological processes leading to atherogenesis and cerebral ischemic injury. While mechanisms of disease are complex,
Inan, Olmez, Huseyin, Ozyurt
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Blood Pressure Variability and Cerebrovascular Reactivity

American Journal of Hypertension, 2022
Simona, Lattanzi, Artur, Słomka, Afshin A, Divani   +2 more
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Transcranial Doppler cerebrovascular reactivity: Thresholds for clinical significance in cerebrovascular disease

Journal of Neuroimaging
AbstractBackground and PurposeThresholds for abnormal transcranial Doppler cerebrovascular reactivity (CVR) studies are poorly understood, especially for patients with cerebrovascular disease. Using a real‐world cohort with cerebral arterial stenosis, we sought to describe a clinically significant threshold for carbon dioxide reactivity (CO2R) and ...
Robert W. Regenhardt, Neal M. Nolan, Alvin S. Das, Rahul Mahajan, Andrew D. Monk, Sarah L. LaRose, Ibrahim Migdady, Yimin Chen, Faheem Sheriff, Xuesong Bai, Adam A. Dmytriw, Aman B. Patel, Samuel B. Snider, Henrikas Vaitkevicius   +13 more
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Cerebrovascular reactivity in choroid plexus

ISMRM Annual Meeting
Motivation: Choroid plexus (CP) plays an important role in the production of CSF and the formation of the blood-CSF barrier, but its vascular function is unclear. Goal(s): We aim to quantify cerebrovascular reactivity (CVR) of CP in normal controls. Approach: We applied PCASL with 5%CO2 inhalation in 92 subjects and compared CVR in gray matter, white ...
YUECEN JIN, Monroe Turner, Kaisha Hazel, Yuguang Zhao, Beini Hu, Dema Abdelkarim, Binu Thomas, Bart Rypma, Hanzhang Lu, Peiying Liu   +9 more
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Cerebrovascular reactivity measurement using near-infrared spectroscopy

Clinical Science, 1998
niques. The study population, consisting of normal individuals with a mean age of just under 30 years with 6 % over 50 years of age, provides an appropriate comparative population for studies in patients with head injury and probably subarachnoid haemorrhage, and could be usefully extended to an older population to allow comparison of normal ranges in ...
openaire   +2 more sources