Results 121 to 130 of about 775,260 (336)

The longitudinal changes of BOLD response and cerebral hemodynamics from acute to subacute stroke. A fMRI and TCD study [PDF]

, 2009
Background By mapping the dynamics of brain reorganization, functional magnetic resonance imaging MRI (fMRI) has allowed for significant progress in understanding cerebral plasticity phenomena after a stroke. However, cerebro-vascular diseases can affect
A Feydy, A Jaillard, A Krainik, AC Roc, Andreas Hetzel, AV Alexandrov, B Bonakdarpour, C Dohmen, C Iadecola, C Weiller, Christoph P Kaller, Claudia Altamura, Cornelius Weiller, D Saur, D Saur, DM Feeney, Dorothee Saur, EW Lang, F Binkofsk, F Hamzei, Fabrizio Vernieri, Farsin Hamzei, FM Faraci, H Johansen-Berg, J Ashburner, J Fridriksson, J Röther, JT Korpelainen, KK Peck, LM Carusone, M D'Esposito, M Hund-Georgiadis, M Reinhard, M Reinhard, M Reinhard, M Zaitsev, Magnus-Sebastian Vry, Matthias Reinhard, NS Ward, NS Ward, P Kapeller, Paolo Maria Rossini, PM Rossini, PM Rossini, R Pineiro, V Prabhakaran, Y Murata   +46 more
core   +3 more sources

Effects of Hypobaric Hypoxia on Cerebral Autoregulation [PDF]

Stroke, 2010
Background and Purpose— Acute hypoxia is associated with impairment of cerebral autoregulation (CA), but it is unclear if altered CA during prolonged hypoxia is pivotal to the development of cerebral pathology, such as that seen in acute mountain sickness (AMS).
Subudhi, AW, Panerai, RB, Roach, RC
openaire   +4 more sources

Cardiac output‐mediated regulation of cerebral blood flow during exercise: Clinical perspectives on the indirect impact of muscle metaboreflex

Experimental Physiology, EarlyView.
Abstract The muscle metaboreflex stimulates the elevation of arterial blood pressure, aiming to rectify the oxygen deficit by enhancing oxygen delivery to support muscle activity. Moreover, activating the muscle metaboreflex significantly increases cardiac output (CO) by increasing factors such as heart rate, ventricular contractility, preload, stroke ...
Shigehiko Ogoh
wiley   +1 more source

Monitoring of Cerebral Blood Flow Autoregulation after Cardiac Arrest

Medicina
Background: Cardiac arrest remains one of the leading causes of death. After successful resuscitation of patients in cardiac arrest, post-cardiac arrest syndrome develops, part of it being an impaired cerebral blood flow autoregulation.
Rok Petrovčič, Martin Rakusa, Andrej Markota   +2 more
doaj   +1 more source

Cerebral vasoreactivity in response to a headof-bed position change is altered in patients with moderate and severe obstructive sleep apnea [PDF]

, 2018
Obstructive sleep apnea (OSA) can impair cerebral vasoreactivity and is associated with an increased risk of cerebrovascular disease. Unfortunately, an easy-to-use, non-invasive, portable monitor of cerebral vasoreactivity does not exist. Therefore, we
Blanco, Igor, Cotta, Gianluca, Durduran, Turgut, Fortuna Gutiérrez, Ana Mª, Giovannella, Martina, Gregori-Pla, Clara, Mayos, Mercè, Mola, Anna, Universitat Autònoma de Barcelona, Zirak, Peyman   +9 more
core   +3 more sources

Feasibility of superimposed supine cycling and lower body negative pressure as an effective means of prolonging exercise tolerance in individuals experiencing persisting post‐concussive symptoms: Preliminary results

Experimental Physiology, EarlyView.
Abstract To examine the feasibility, utility and safety of superimposed lower body negative pressure (LBNP) and tilt during supine cycling in individuals suffering from persisting post‐concussive symptoms (PPCS). Eleven individuals aged 17–31 (6 females/5 males) participated in two randomized separate visits, 1 week apart.
Raelyn Javra, Joel S. Burma, Nathan E. Johnson, Jonathan D. Smirl   +3 more
wiley   +1 more source

Implications of habitual endurance and resistance exercise for dynamic cerebral autoregulation

Experimental Physiology, 2019
What is the central question of this study? Does habitual resistance and endurance exercise modify dynamic cerebral autoregulation? What is the main finding and its importance? To the authors’ knowledge, this is the first study to directly assess dynamic
B. Perry, J. Cotter, Stephanie Korad, S. Lark, Lawrence Labrecque, P. Brassard, Myriam Paquette, O. Le Blanc, S. Lucas   +8 more
semanticscholar   +1 more source

Effects of non-physiological blood pressure artefacts on measures of cerebral autoregulation [PDF]

arXiv, 2016
Cerebral autoregulation refers to regulation mechanisms that aim to maintain cerebral blood flow approximately constant. It is often assessed by autoregulation index (ARI), which uses arterial blood pressure and cerebral blood flow velocity time series to produce a ten-scale index of autoregulation performance (0 denoting the absence of and 9 the ...
arxiv  

Acute management of poor condition subarachnoid hemorrhage patients [PDF]

, 2012
Poor condition subarachnoid hemorrhage (SAH) patients present a high mortality and morbidity. In this study, we reviewed the acute interventional (surgical and endovascular) management of 109 SAH-poor condition patients, who were treated as early as ...
Archavlis, Eleftherios, Carvi y Nievas, Mario N.   +1 more
core  

A multiscale model of cerebral autoregulation in health and disease [PDF]

With an increasingly elderly population worldwide, many serious cerebrovascular diseases will overtake cardiac disease to be the greatest clinical challenge for many countries.
Tong, Zheng
core   +2 more sources