Results 121 to 130 of about 29,744 (154)

Critical Thresholds for Cerebrovascular Reactivity: Fact or Fiction?

Neurocritical Care, 2012
To the Editor, We read with interest the recent publication by Sorrentino et al. [1] entitled: ‘‘Critical Thresholds for Cerebrovascular Reactivity after Traumatic Brain Injury’’. The study is based on the hypothesis that bedside real-time calculation of the pressure-reactivity index (PRx) allows a continuous estimation of cerebral pressure ...
Nordström, Carl-Henrik, Nielsen, Troels Halfeld   +1 more
openaire   +2 more sources

Cerebrovascular reactivity impairment in resistant hypertension

Journal of Human Hypertension
Resistant hypertension (RH) is defined as office systolic blood pressure (BP) that remains uncontrolled despite the concurrent use of three or more antihypertensive drug classes and may be associated with altered vasomotor responses to physiological stimuli.
Miceli, G, Velardo, M, Casuccio, A, Daidone, M, Basso, M G, Tuttolomondo, A   +5 more
openaire   +2 more sources

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
openaire   +1 more source

Effects of Bypas's on CO 2 Cerebrovascular Reactivity in Ischaemic Cerebrovascular Diseases - Based on the Intra-Operative LCBF and CO 2 Cerebrovascular Reactivity Studies

Acta Neurochirurgica, 1999
The authors evaluated the effects of superficial temporal to middle cerebral artery (STA-MCA) bypass on CO2 cerebrovascular reactivity (CVR) in ischaemic cerebrovascular diseases (CVDs). Local cerebral blood flow (LCBF) and CO2 CVR in 19 patients with ischaemic CVD subjected to standard STA-MCA bypasses were examined during surgery.
S, Kawaguchi, T, Sakaki, R, Uranishi
openaire   +2 more sources

Effect of dotarizine on CO2-dependent cerebrovascular reactivity

Acta Neurochirurgica, 1995
Dotarizine is chemically related to calcium antagonist cinnarizine and flunarizine. The study presented investigates the influence of the drug on the diameter of cortical arteries and cerebral blood velocity measured in the MCA in two groups of anaesthetized cats.
J, Chomicki, J, Jurkiewicz, W, Zabolotny, Z, Czernicki, J, Cervos-Navarro   +4 more
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +2 more sources

Blood Pressure Variability and Cerebrovascular Reactivity

American Journal of Hypertension, 2022
Simona, Lattanzi, Artur, Słomka, Afshin A, Divani   +2 more
openaire   +2 more sources

Cerebrovascular Reactivity

2022
openaire   +1 more source

Reduced and Delayed Cerebrovascular Reactivity in Patients with Parkinson's Disease

Movement Disorders, 2023
Sephira Ryman, Kathleen Poston
exaly