Results 131 to 140 of about 775,260 (336)

Dissociation of Cerebral Blood Flow and Femoral Artery Blood Pressure Pulsatility After Cardiac Arrest and Resuscitation in a Rodent Model: Implications for Neurological Recovery. [PDF]

, 2020
Background Impaired neurological function affects 85% to 90% of cardiac arrest (CA) survivors. Pulsatile blood flow may play an important role in neurological recovery after CA.
Akbari, Yama, Bazrafkan, Afsheen, Choi, Bernard, Crouzet, Christian, Lee, Donald, Tromberg, Bruce J, Wilson, Robert H   +6 more
core   +1 more source

Effects of the angle of head‐down tilt on dynamic cerebral autoregulation during combined exposure to cephalad fluid shift and mild hypercapnia

Experimental Physiology, EarlyView.
Abstract Astronauts experience combined exposure to a cephalad fluid shift and mild hypercapnia during space missions, potentially contributing to health problems. Such combined exposure may weaken dynamic cerebral autoregulation. The magnitude of cephalad fluid shift varies between individuals, and dynamic cerebral autoregulation may be affected more ...
Tomokazu Kato, Yojiro Ogawa, Ken‐ichi Iwasaki   +2 more
wiley   +1 more source

Menstrual cycle and oral contraceptives influence cerebrovascular dynamics during hypercapnia

Physiological Reports, 2022
Women experience fluctuating orthostatic intolerance during the menstrual cycle, suggesting sex hormones may influence cerebral blood flow. Young (aged 18–30) healthy women, either taking oral contraceptives (OC; n = 14) or not taking OC (NOC; n = 12 ...
Tania J. Pereira, Sara Wasef, Ilana Ivry, Elnaz Assadpour, Baithat O. Adeyinka, Heather Edgell   +5 more
doaj   +1 more source

Baroreflex and Cerebral Autoregulation Are Inversely Correlated

Circulation Journal, 2014
The relative stability of cerebral blood flow is maintained by the baroreflex and cerebral autoregulation (CA). We assessed the relationship between baroreflex sensitivity (BRS) and CA in patients with atherosclerotic carotid stenosis or occlusion.Patients referred for assessment of atherosclerotic unilateral >50% carotid stenosis or occlusion were ...
Marc-Antoine Custaud, Xiuyun Liu, Marek Czosnyka, Anne Pavy-Le Traon, Nathalie Nasr, Nathalie Nasr, Vincent Larrue, Georgios V. Varsos   +7 more
openaire   +5 more sources

Regional changes in cerebral blood flow between the upright and supine posture and over 3 days of bed rest

Experimental Physiology, EarlyView.
Abstract A reduction in cerebral blood flow (CBF) has been observed during spaceflight and bed rest. We aimed to examine the magnitude and regional heterogeneity of the decrease in CBF during bed rest compared to posture changes on Earth. Seventeen participants (age, 29 ± 9 years, 7 females) were studied in the upright and supine posture and over 3 ...
Carmen Possnig, Kyohei Marume, Gautam Babu, Sylvan L. J. E. Janssen, Christopher M. Hearon Jr, Katrin A. Dias, Satyam Sarma, Justin S. Lawley, Benjamin D. Levine   +8 more
wiley   +1 more source

Chronic kidney disease and poor outcomes in ischemic stroke: is impaired cerebral autoregulation the missing link?

BMC Neurology, 2018
BackgroundChronic kidney disease increases stroke incidence and severity but the mechanisms behind this cerebro-renal interaction are mostly unexplored.
P. Castro, E. Azevedo, I. Rocha, Farzaneh A. Sorond, J. Serrador   +4 more
semanticscholar   +1 more source

Mathematical model of the interaction between baroreflex and cerebral autoregulation [PDF]

4th International Conference on Computational and Mathematical Biomedical Engineering - CMBE2015 (2015), 721-724, 2015
Baroreflex (BR) and cerebral autoregulation (CA) are two important mechanisms regulating blood pressure and flow. However, the functional relationship between BR and CA in humans is unknown. Since BR impairment is an adverse prognostic indicator for both cardiac and cerebrovascular diseases it would be of clinical interest to better understand the ...
arxiv  

Cerebral pressure autoregulation and carbon dioxide reactivity during propofol-induced EEG suppression [PDF]

, 2017
We studied cerebral pressure autoregulation and carbon dioxide reactivity during propofol-induced electrical silence of the electroencephalogram (EEG) in 10 patients.
LAM, A. M., MATTA, B. F., MAYBERG, T. S., STREBEL, S.   +3 more
core  

Neural Vascular Mechanism for the Cerebral Blood Flow Autoregulation after Hemorrhagic Stroke [PDF]

, 2017
During the initial stages of hemorrhagic stroke, including intracerebral hemorrhage and subarachnoid hemorrhage, the reflex mechanisms are activated to protect cerebral perfusion, but secondary dysfunction of cerebral flow autoregulation will eventually ...
Hua Feng, Le Zhang, Ming Xiao, Qiang Li, Yujie Chen   +4 more
core   +1 more source

Cerebral Autoregulation Real-Time Monitoring

PLOS ONE, 2016
Cerebral autoregulation is a mechanism which maintains constant cerebral blood flow (CBF) despite changes in mean arterial pressure (MAP). Assessing whether this mechanism is intact or impaired and determining its boundaries is important in many clinical settings, where primary or secondary injuries to the brain may occur.
Eliahu Ratner, Stas Lokshin, Adi Tsalach, Ilan Breskin, Zmira Silman, Nahum Budin, Moshe Kamar   +6 more
openaire   +5 more sources