scholarly journals VP42.03: The role of ductus venosus blood flow velocities in first and second trimester of pregnancy in prediction of the fetal and neonatal condition

2021 ◽  
Vol 58 (S1) ◽  
pp. 272-272
Author(s):  
M. Sekielska‐Domanowska ◽  
M. Pietryga ◽  
B. Czuba ◽  
M. Dubiel
Keyword(s):  
Blood Flow ◽  
Ductus Venosus ◽  
Second Trimester ◽  
Blood Flow Velocities ◽  
Flow Velocities

Reference values of ductus venosus blood flow velocities and waveform indices from 10 to 20�weeks of gestation

2004 ◽  
Vol 269 (3) ◽  
pp. 199-204 ◽  
Author(s):  
R. Axt-Fliedner ◽  
S. Diler ◽  
T. Georg ◽  
M. Friedrich ◽  
K. Diedrich
Keyword(s):  
Blood Flow ◽  
Reference Values ◽  
Ductus Venosus ◽  
Blood Flow Velocities ◽  
Flow Velocities

Patterns of Cerebral Blood Flow and Systemic Hemodynamics During Arithmetic Processing

2008 ◽  
Vol 22 (2) ◽  
pp. 81-90 ◽  
Author(s):  
Natalie Werner ◽  
Neval Kapan ◽  
Gustavo A. Reyes del Paso
Keyword(s):  
Blood Pressure ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Time Course ◽  
Doppler Sonography ◽  
Transcranial Doppler Sonography ◽  
Systemic Hemodynamics ◽  
Heart Period ◽  
Blood Flow Velocities ◽  
Flow Velocities

The present study explored modulations in cerebral blood flow and systemic hemodynamics during the execution of a mental calculation task in 41 healthy subjects. Time course and lateralization of blood flow velocities in the medial cerebral arteries of both hemispheres were assessed using functional transcranial Doppler sonography. Indices of systemic hemodynamics were obtained using continuous blood pressure recordings. Doppler sonography revealed a biphasic left dominant rise in cerebral blood flow velocities during task execution. Systemic blood pressure increased, whereas heart period, heart period variability, and baroreflex sensitivity declined. Blood pressure and heart period proved predictive of the magnitude of the cerebral blood flow response, particularly of its initial component. Various physiological mechanisms may be assumed to be involved in cardiovascular adjustment to cognitive demands. While specific contributions of the sympathetic and parasympathetic systems may account for the observed pattern of systemic hemodynamics, flow metabolism coupling, fast neurogenic vasodilation, and cerebral autoregulation may be involved in mediating cerebral blood flow modulations. Furthermore, during conditions of high cardiovascular reactivity, systemic hemodynamic changes exert a marked influence on cerebral blood perfusion.

scholarly journals Effect of positioning from supine and left lateral positions to left lateral tilt on maternal blood flow velocities and waveforms in full-term parturients

Anaesthesia ◽  
2012 ◽  
Vol 67 (8) ◽  
pp. 936-936 ◽  
Author(s):  
P. Kundra ◽  
J. Velraj ◽  
U. Amirthalingam ◽  
S. Habeebullah ◽  
K. Yuvaraj ◽  
...  
Keyword(s):  
Blood Flow ◽  
Maternal Blood ◽  
Full Term ◽  
Lateral Tilt ◽  
Blood Flow Velocities ◽  
Flow Velocities

Blood Flow Velocities in the Vertebral Veins of Healthy Subjects: A Duplex Sonographic Study

1999 ◽  
Vol 9 (4) ◽  
pp. 198-200 ◽  
Author(s):  
Olaf Hoffmann ◽  
Markus Weih ◽  
Thomas von Münster ◽  
Stephan Schreiber ◽  
Karl Max Einhäupl ◽  
...  
Keyword(s):  
Blood Flow ◽  
Healthy Subjects ◽  
Blood Flow Velocities ◽  
Flow Velocities

scholarly journals Acute Effect of Hypervolemic Hemodilution on Retrobulbar Hemodynamics in Anterior Ischemic Optic Neuropathy

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
Marion Bienert ◽  
Niklas Plange ◽  
Andreas Remky ◽  
Kay Oliver Arend ◽  
David Kuerten
Keyword(s):  
Blood Flow ◽  
Hydroxyethyl Starch ◽  
Optic Neuropathy ◽  
Acute Effect ◽  
Anterior Ischemic Optic Neuropathy ◽  
Ischemic Optic Neuropathy ◽  
Hypervolemic Hemodilution ◽  
Blood Flow Velocities ◽  
Retrobulbar Hemodynamics ◽  
Flow Velocities

Purpose.Ischemic ocular disorders may be treated by hypervolemic hemodilution. The presumed therapeutic benefit is based on a volume effect and improved rheological factors. The aim was to investigate the acute effect of intravenous hydroxyethyl starch on retrobulbar hemodynamics in patients with nonarteritic anterior ischemic optic neuropathy (NAION).Methods.24 patients with acute NAION were included. Retrobulbar hemodynamics were measured using color Doppler imaging before and 15 min after intravenous infusion of 250 cc 10% hydroxyethyl starch (HES). Peak systolic velocity (PSV), end diastolic velocity (EDV), and Pourcelot’s resistive index (RI) were measured in the ophthalmic artery (OA), central retinal artery (CRA), and short posterior ciliary arteries (PCAs).Results.After infusion of HES blood flow velocities significantly increased in the CRA (PSV from7.53±2.33to8.32±2.51  (p<0.001); EDV from2.16±0.56to2.34±0.55  (p<0.05)) and in the PCAs (PSV from7.18±1.62to7.56±1.55  (p<0.01); EDV from2.48±0.55to2.66±0.6 cm/sec (p<0.01)). The RI of all retrobulbar vessels remained unaffected. Blood pressure and heart rate remained unchanged.Conclusions.Hypervolemic hemodilution has an acute effect on blood flow velocities in the CRA and PCAs in NAION patients. Increased blood flow in the arteries supplying the optic nerve head may lead to a better perfusion in NAION patients. This trial is registered withDRKS00012603.

Doppler Assessment of Human Neonatal Gut Blood Flow Velocities

1992 ◽  
Vol 15 (1) ◽  
pp. 6-12 ◽  
Author(s):  
R. C. Coombs ◽  
M. E. I. Morgan ◽  
G. M. Durbin ◽  
I. W. Booth ◽  
A. S. McNeish
Keyword(s):  
Blood Flow ◽  
Blood Flow Velocities ◽  
Flow Velocities
Sign in / Sign up

Export Citation Format

Share Document