scholarly journals Middle cerebral artery blood flow velocities and pulsatility index and the cerebroplacental pulsatility ratio: longitudinal reference ranges and terms for serial measurements

2007 ◽  
Vol 30 (3) ◽  
pp. 287-296 ◽  
Author(s):  
C. Ebbing ◽  
S. Rasmussen ◽  
T. Kiserud
Keyword(s):  
Blood Flow ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Pulsatility Index ◽  
Reference Ranges ◽  
Artery Blood Flow ◽  
Blood Flow Velocities ◽  
Serial Measurements ◽  
Flow Velocities

EFFECT OF SUFENTANIL ON MIDDLE CEREBRAL ARTERY BLOOD FLOW VELOCITIES DURING DESFLURANE INDUCED ANESTHESIA

1996 ◽  
Vol 8 (4) ◽  
pp. 336
Author(s):  
P. H. Tonner ◽  
J. Scholz ◽  
T. Krause ◽  
A. Paris ◽  
G. O. von Knobelsdorff ◽  
...  
Keyword(s):  
Blood Flow ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Artery Blood Flow ◽  
Blood Flow Velocities ◽  
Flow Velocities

Whole blood viscosity and cerebral blood flow velocities in obese hypertensive or obese normotensive adolescents

2018 ◽  
Vol 31 (3) ◽  
pp. 275-281 ◽  
Author(s):  
Meltem Akcaboy ◽  
Bijen Nazliel ◽  
Tayfun Goktas ◽  
Serdar Kula ◽  
Bülent Celik ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Cerebral Artery ◽  
Blood Viscosity ◽  
Whole Blood ◽  
Artery Blood Flow ◽  
Whole Blood Viscosity ◽  
Blood Flow Velocities ◽  
Flow Velocities

AbstractBackground:Obesity affects all major organ systems and leads to increased morbidity and mortality. Whole blood viscosity is an important independent regulator of cerebral blood flow. The aim of the present study was to evaluate the effect of whole blood viscosity on cerebral artery blood flow velocities using transcranial Doppler ultrasound in pediatric patients with obesity compared to healthy controls and analyze the effect of whole blood viscosity and blood pressure status to the cerebral artery blood flow velocities.Methods:Sixty patients with obesity diagnosed according to their body mass index (BMI) percentiles aged 13–18 years old were prospectively enrolled. They were grouped as hypertensive or normotensive according to their ambulatory blood pressure monitoring. Whole blood viscosity and middle cerebral artery velocities by transcranial Doppler ultrasound were studied and compared to 20 healthy same aged controls.Results:Whole blood viscosity values in hypertensive (0.0619±0.0077 poise) and normotensive (0.0607±0.0071 poise) groups were higher than controls (0.0616±0.0064 poise), with no significance. Middle cerebral artery blood flow velocities were higher in the obese hypertensive (73.9±15.0 cm/s) and obese normotensive groups (75.2±13.5 cm/s) than controls (66.4±11.5 cm/s), but with no statistical significance.Conclusions:Physiological changes in blood viscosity and changes in blood pressure did not seem to have any direct effect on cerebral blood flow velocities, the reason might be that the cerebral circulation is capable of adaptively modulating itself to changes to maintain a uniform cerebral blood flow.

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