Umbilical and fetal middle cerebral artery Doppler reference ranges in a twin population followed longitudinally from 24 to 38 weeks' gestation

2014 ◽  
Vol 44 (4) ◽  
pp. 461-467 ◽  
Author(s):  
C. Mulcahy ◽  
F. M. McAuliffe ◽  
F. Breathnach ◽  
M. Geary ◽  
S. Daly ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Reference Ranges

scholarly journals Reference ranges for umbilical and middle cerebral artery pulsatility index and cerebroplacental ratio in prolonged pregnancies

2004 ◽  
Vol 24 (6) ◽  
pp. 647-653 ◽  
Author(s):  
M. Palacio ◽  
F. Figueras ◽  
L. Zamora ◽  
J. M. Jiménez ◽  
B. Puerto ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Pulsatility Index ◽  
Reference Ranges ◽  
Cerebroplacental Ratio

Reference ranges for middle cerebral artery peak systolic velocity in monochorionic diamniotic twins: a longitudinal study

2009 ◽  
Vol 34 (2) ◽  
pp. 149-154 ◽  
Author(s):  
P. Klaritsch ◽  
J. Deprest ◽  
T. Van Mieghem ◽  
L. Gucciardo ◽  
E. Doné ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Peak Systolic Velocity ◽  
Reference Ranges

scholarly journals Reference values for Doppler indices of the umbilical and fetal middle cerebral arteries in uncomplicated third trimester pregnancy

1970 ◽  
Vol 32 (3) ◽  
pp. 5-13
Author(s):  
S Paudel ◽  
B Lohani ◽  
G Gurung ◽  
MA Ansari ◽  
P Kayastha
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Pulsatility Index ◽  
Umbilical Artery ◽  
Resistance Index ◽  
Reference Ranges ◽  
Regression Equations ◽  
Third Trimester ◽  
Trimester Pregnancy ◽  
Doppler Indices

Introduction: The purpose of this study was to categorize new reference ranges for measurements of commonly used umbilical artery and fetal middle cerebral artery Doppler indices (Pulsatility Index, Resistance Index, and Systolic: Diastolic ratio) in uncomplicated third trimester pregnancy. Methods: This was a prospective cross sectional study involving 101 singleton uncomplicated pregnancies of 30 to 37 weeks of gestation. Umbilical artery indices were obtained from free floating loop and middle cerebral Doppler indices were obtained from the proximal third of the artery with flow towards the probe. Regression equations were used to categorize reference ranges and percentile fitted Normograms were obtained for all the parameters. Results: Among 101 singleton pregnancies between 30 and 37 weeks of gestation, 65 (64.35%) were primigravida women and 36 (34.65%) were multigravida. Mean maternal age was 23.12years (range 16 to 35 years). Maximum number of pregnancies (18.81%) was at 34 weeks of gestation. The established percentiles of Doppler indices showed a continuous reduction of all the measured indices as pregnancy increases (p<0.0001). Conclusions: Reference ranges were obtained for the middle cerebral artery and umbilical artery Doppler indices. These ranges are consistent with similar studies done by other authors. Keywords: Doppler study; fetal Middle cerebral artery; pulsatility index; resistance index; systolic; diastolic ratio; umbilical artery DOI: http://dx.doi.org/10.3126/joim.v32i3.4953 Journal of Institute of Medicine, December, 2010; 32:3 5-13

An ultrastructural analysis of the sympathetic innervation of the rabbit ear artery and middle cerebral artery and their branches

1992 ◽  
Vol 50 (1) ◽  
pp. 934-935
Author(s):  
John T. Dodge ◽  
John A. Bevan
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Sympathetic Innervation ◽  
Electrical Field Stimulation ◽  
Rabbit Ear Artery ◽  
Electrical Field ◽  
Functional Differences ◽  
Ear Artery ◽  
Rabbit Ear ◽  
Vascular Beds

Unlike many peripheral vascular beds, the sympathetic nervous system exerts little control on cerebral blood flow. The contractile response of isolated rabbit middle cerebral artery (MCA) segments to electrical field stimulation of its intramural nerves is less than in a similar-sized artery from the ear. This study was undertaken to characterize and compare the perivascular neuromuscular relationships and innervation density of similar-sized arteries varying in diameter from these two different regional arterial beds to see if there were structural correlates for these functional differences.

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