scholarly journals Exercise‐induced elevations in cerebral blood velocity are greater in running compared to cycling at higher intensities

2020 ◽  
Vol 8 (15) ◽  
Author(s):  
Rhodri J. Furlong ◽  
Samuel R. Weaver ◽  
Rory Sutherland ◽  
Claire V. Burley ◽  
Gabriella M. Imi ◽  
...  
Keyword(s):  
Blood Velocity ◽  
Cerebral Blood Velocity ◽  
Exercise Induced

Which Neurological Examinations can be used to Predict Outcome During the Neonatal Period?

1991 ◽  
Vol 7 (S1) ◽  
pp. 118-124
Author(s):  
Frances Cowan
Keyword(s):  
Neurological Examination ◽  
Prognostic Value ◽  
Neonatal Period ◽  
Diagnostic Value ◽  
Blood Velocity ◽  
Evoked Responses ◽  
Clinical Neurological Examination ◽  
Velocity Imaging ◽  
Ultrasound Measurements ◽  
Cerebral Blood Velocity

In this review I shall discuss the prognostic value of the clinical neurological examination, the EEG (and the various methods of recording it), evoked responses, and Doppler ultrasound measurements of cerebral blood velocity. Imaging modalities (ultrasound, CT, MRI) will be dealt with elsewhere under discussion of their diagnostic value.

Inspiratory Resistance Increases Cerebral Blood Velocity Oscillations During Standing After Exercise

2008 ◽  
Vol 40 (Supplement) ◽  
pp. S286
Author(s):  
Christine N. Freeman ◽  
Steven A. Romero ◽  
Caroline A. Rickards ◽  
Kathy L. Ryan ◽  
Keith G. Lurie ◽  
...  
Keyword(s):  
Blood Velocity ◽  
Inspiratory Resistance ◽  
Cerebral Blood Velocity

scholarly journals Regional Cerebral Blood Flow, Cerebral Blood Velocity, and Pulsatility Index in Newborn Dogs

1983 ◽  
Vol 17 (11) ◽  
pp. 908-912 ◽  
Author(s):  
Daniel G Batton ◽  
Jonathan Hellmann ◽  
Milton J Hernandez ◽  
M Jeffrey Maisels
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Pulsatility Index ◽  
Regional Cerebral Blood Flow ◽  
Blood Velocity ◽  
Regional Cerebral Blood ◽  
Cerebral Blood Velocity

scholarly journals Augmented cerebral blood velocity in response to isometric handgrip exercise in women with a history of preeclampsia

2019 ◽  
Vol 317 (6) ◽  
pp. R834-R839
Author(s):  
Kathleen B. Miller ◽  
Virginia M. Miller ◽  
Ronée E. Harvey ◽  
Sushant M. Ranadive ◽  
Michael J. Joyner ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Recovery Period ◽  
Blood Velocity ◽  
Hypertensive Disorder ◽  
Isometric Handgrip ◽  
Arterial Blood ◽  
Increased Risk ◽  
Cerebral Blood Velocity ◽  
History Of ◽  
Isometric Handgrip Exercise

Preeclampsia (PE) is a hypertensive disorder of pregnancy described as a condition of excessive sympathoexcitation. PE places a woman at increased risk for lifelong hypertension and cognitive impairment. Cerebral blood velocity is blunted in response to a vasoactive stimulus in women with a history of PE. This study investigated how a sympathoexcitatory stimulus affects cerebral blood velocity in women with a history of PE. Middle cerebral artery blood velocity (MCAv) and beat-to-beat mean arterial blood pressure (MAP) were measured in postmenopausal women with a history of PE ( n = 21; age = 59 ± 5 yr) and a history of a normotensive pregnancy (NP; n = 27; age = 58 ± 4 yr), at baseline, during isometric handgrip to fatigue (IHG) followed by postexercise ischemia (PEI), and a recovery period (REC). Baseline MAP and MAP responses to IHG and PEI did not differ between groups. MCAv at baseline and throughout the stimulus was lower in PE women compared with NP women ( P < 0.05 for all). MCAv increased during IHG in both groups ( P < 0.05). This increase in MCAv was greater in PE compared with NP women during IHG and REC (IHG: PE 13 ± 2% vs. NP 9 ± 2%; REC: PE 3 ± 2% vs. NP −2 ± 2%; P < 0.05 for both). Thus, a history of PE is associated with low baseline cerebral blood velocity but an augmented response to a sympathoexcitatory stimulus. These changes in cerebral blood flow regulation may lead to an increased risk for cognitive impairment in women with a history of PE.

Opposite effects of l-arginine and nitroglycerin on cerebral blood velocity: Nitric oxide precursors and cerebral blood velocity

1997 ◽  
Vol 150 (1) ◽  
pp. 71-75 ◽  
Author(s):  
Giuseppe Micieli ◽  
Daniele Bosone ◽  
Alfredo Costa ◽  
Anna Cavallini ◽  
Simona Marcheselli ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Blood Velocity ◽  
Cerebral Blood Velocity

Effect of Pneumothorax-lnduced Systemic Blood Pressure Alterations on the Cerebral Circulation in Newborn Dogs

PEDIATRICS ◽  
1984 ◽  
Vol 74 (3) ◽  
pp. 350-353
Author(s):  
Daniel G. Batton ◽  
Jonathan Hellmann ◽  
Elizabeth E. Nardis
Keyword(s):  
Blood Pressure ◽  
Arterial Blood Pressure ◽  
Premature Infants ◽  
Mean Arterial Blood Pressure ◽  
Cerebral Circulation ◽  
Intraventricular Hemorrhage ◽  
Blood Velocity ◽  
Arterial Blood ◽  
Cerebral Blood Velocity ◽  
Rapid Evacuation

Pneumothorax has been associated with intraventricular hemorrhage in premature infants, although the mechanism for this relationship is not clear. Because alterations in cerebral blood flow are believed to be important in the pathogenesis of intraventricular hemorrhage, the effect of induced pneumothorax and subsequent evacuation on the cerebral circulation in 16 newborn dogs was evaluated. Continuous Doppler ultrasound was used to monitor changes in cerebral blood velocity. Pneumothorax was induced by slow infusion (5 cc/kg/min) or rapid infusion (5 to 10 seconds) of air to reduce mean arterial blood pressure to half of base-line levels. Both methods of pneumothorax induction resulted in significant elevations of central venous pressure and intrapleural pressure, whereas mean arterial blood pressure and cerebral blood velocity decreased significantly. In each group, the pneumothorax was evacuated either by slow withdrawal of air (10 cc/kg/min) or as rapidly as possible. Rapid evacuation of air resulted in an immediate increase in mean arterial blood pressure and cerebral blood velocity to supranormal levels. Slow evacuation led to a more gradual normalization of mean arterial blood pressure and cerebral blood velocity. It is suggested that the precipitous increases in mean arterial blood pressure and cerebral blood velocity following rapid evacuation of a tension pneumothorax may account for the observed association between pneumothorax and intraventricular hemorrhage in premature infants.

Changes in cerebral blood velocity after intravenous diazepam

1992 ◽  
Vol 31 (7) ◽  
pp. 690-697 ◽  
Author(s):  
Roy J. Mathew ◽  
William H. Wilson ◽  
Diane F. Humphreys ◽  
Joe V. Lowe ◽  
Kathryn E. Wiethe
Keyword(s):  
Blood Velocity ◽  
Intravenous Diazepam ◽  
Cerebral Blood Velocity
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