Spatial and Perceptual Impairment Related to Cortical Cerebral Blood Flow and EEG in Deep White Matter Infarcts of the Right Hemisphere

1995 ◽  
Vol 35 (2) ◽  
pp. 80-85 ◽  
Author(s):  
Björn Brådvik ◽  
Bengt Sonesson ◽  
Erik Ryding ◽  
Ingrmar Rosén
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
White Matter ◽  
Right Hemisphere ◽  
Deep White Matter ◽  
Cortical Cerebral Blood Flow ◽  
The Right ◽  
Perceptual Impairment

scholarly journals PROTECTIVE MECHANISMS AGAINST HYPOXIA IN DIVING SIMULATION IN SWIMMERS

2020 ◽  
Vol 20 (1) ◽  
pp. 29-35
Author(s):  
E Podyacheva ◽  
T Zemlianukhina ◽  
E Simanovsky ◽  
E Fedorova ◽  
T Baranova
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Right Hemisphere ◽  
Water Immersion ◽  
Training Session ◽  
Protective Mechanisms ◽  
Small Vessels ◽  
The Face ◽  
The Right ◽  
The Brain

Aim. The article deals with studying the systemic protective mechanisms of the brain against hypoxia during water immersion in highly skilled swimmers. Material and methods. 25 males aged 18–20 years were examined: 9 masters of sports, one master of sports of international class and 15 people not involved in sports. The study of cerebral blood flow was carried out by rheoencephalography (REG). REG was recorded at rest, when the face was immersed in water and during recovery. Examination was carried out 2 hours after the morning training session. In addition to cerebral blood flow, ECG and blood pressure were recorded at rest, during water immersion and recovery. Statistical data processing was performed using nonparametric Mann–Whitney and Wilcoxon criteria. Results. It was revealed that athletes at rest demonstrated more pronounced asymmetry of blood circulation and higher blood flow in the right hemisphere than people not involved in sports. However, during water immersion, the asymmetry disappears, blood flow improves, especially in the left hemisphere in the carotid artery territory as a result of a decrease in the tone of small vessels. In people not involved in sports, protective mechanisms are less pronounced. Conclusion. Vast experience in sports activities related to exercises performed in water and to training hypoxic exercises contributed to effective protective mechanisms against hypoxia based on the diving reflex.

Pentobarbital changes compartmental contribution to cerebral blood flow

1982 ◽  
Vol 56 (4) ◽  
pp. 504-510 ◽  
Author(s):  
John P. Laurent ◽  
Pablo Lawner ◽  
Frederick A. Simeone ◽  
Eugene Fink
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
White Matter ◽  
Intracranial Pressure ◽  
Content Type ◽  
Deep White Matter ◽  
Percentage Contribution ◽  
Blood Flows ◽  
Xenon 133 ◽  
Fine Print

✓ Barbiturates were administered to normal dogs, establishing an isoelectric electrocorticogram. Cortical cerebral blood flows (CBF) and deeper CBF's were respectively measured by krypton-85 (85Kr) and xenon-133 (133Xe). Following barbiturate administration, the two methods of measuring CBF showed a poor coefficient of variation (r = 0.12, p < 0.05). The cortical flows decreased less than the fast compartment flows. A shifting of percentage contribution of flow to the slow compartment (60% increase, p < 0.001) was observed after barbiturate infusion. A selective shunting of blood flow to the slower areas may explain the lowering of intracranial pressure and protection of the deep white matter observed by many authors who use barbiturates in clinical and experimental situations.

Decline in Total Cerebral Blood Flow Is Linked with Increase in Periventricular but Not Deep White Matter Hyperintensities

Radiology ◽  
2007 ◽  
Vol 243 (1) ◽  
pp. 198-203 ◽  
Author(s):  
V. Hester ten Dam ◽  
Dominique M. J. van den Heuvel ◽  
Anton J. M. de Craen ◽  
Edward L. E. M. Bollen ◽  
Heather M. Murray ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
White Matter ◽  
White Matter Hyperintensities ◽  
Deep White Matter

scholarly journals Silent infarcts in sickle cell disease occur in the border zone region and are associated with low cerebral blood flow

Blood ◽  
2018 ◽  
Vol 132 (16) ◽  
pp. 1714-1723 ◽  
Author(s):  
Andria L. Ford ◽  
Dustin K. Ragan ◽  
Slim Fellah ◽  
Michael M. Binkley ◽  
Melanie E. Fields ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
White Matter ◽  
Sickle Cell Disease ◽  
Border Zone ◽  
Cell Disease ◽  
Deep White Matter ◽  
Parietal Lobes ◽  
Key Points ◽  
Density Map

Key Points The SCI density map revealed key SCI locations in the deep white matter of the frontal and parietal lobes. Peak SCI density occurs in the region of nadir cerebral blood flow.

scholarly journals Red cell exchange transfusions lower cerebral blood flow and oxygen extraction fraction in pediatric sickle cell anemia

Blood ◽  
2018 ◽  
Vol 131 (9) ◽  
pp. 1012-1021 ◽  
Author(s):  
Kristin P. Guilliams ◽  
Melanie E. Fields ◽  
Dustin K. Ragan ◽  
Cihat Eldeniz ◽  
Michael M. Binkley ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
White Matter ◽  
Sickle Cell Anemia ◽  
Metabolic Stress ◽  
Oxygen Extraction Fraction ◽  
Red Cell ◽  
Deep White Matter ◽  
Extraction Fraction ◽  
Key Points

Key Points Exchange transfusions lower global CBF and OEF in SCA, suggesting transfusions reduce infarct risk by relieving cerebral metabolic stress. In SCA, OEF is highest in the deep white matter, where infarct risk is high; transfusions reduce the volume of tissue with elevated OEF.

Sign in / Sign up

Export Citation Format

Share Document