Cerebral Blood Flow

PEDIATRICS ◽  
1982 ◽  
Vol 70 (6) ◽  
pp. 1013-1013
Author(s):  
BARRY G. BAYLEN ◽  
GEORGE C. EMMANOUILIDES

In the commentary, "Pulsatility Index, Patent Ductus Arteriosus, and Brain Damage," It was stated that we have shown that "blood flow" to the brain was not reduced in premature lambs with left-right ductal shunting. The abstracted data referred primarily to alteration of the percent distribution of blood flow and not to changes of absolute blood flow to systemic organs before and after patent ductus arteriosus (PDA) occlusion in preterm lambs. We subsequently demonstrated that absolute cerebral blood flow (milliliters per gram per minute) in fact was significantly reduced in preterm lambs with PDA.

1999 ◽  
Vol 9 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Rosendo A Rodriguez ◽  
Garry Cornel ◽  
Martin C Hosking ◽  
Nihal Weerasena ◽  
William M Splinter ◽  
...  

PEDIATRICS ◽  
1982 ◽  
Vol 70 (6) ◽  
pp. 1013-1014
Author(s):  
RAUL BEJAR

Baylen and Emmanouilides give the impression that their abstract was misquoted in our commentary. We would like to explain our interpretation of their data. In the abstract, Baylen et al indicate that they measured regional blood flows (RBF) in premature fetal lambs, expressing them as a percentage of the left ventricular output (LVO) before and after patent ductus arteriosus (PDA) closure. Their results (percent of LVO) before and after PDA closure were: lung, 42.7% vs 8.4% (P < .01); carcass, 35% vs 55% (P < .01); heart, 5.5% vs 10.2% (P < .05); gastrointestinal tract, 5.1% vs 9.3% (P < .05); brain, 2.7% vs 3.4% (P = NS); kidney, 2.2% vs 3.3% (P = NS); liver, 3.2% vs 5.7% (P = NS).


1986 ◽  
Vol 20 (10) ◽  
pp. 1054-1054 ◽  
Author(s):  
E Saliba ◽  
A Chantepie ◽  
M C Vaillant ◽  
D Bloc ◽  
L Pourcelot ◽  
...  

1982 ◽  
Vol 101 (4) ◽  
pp. 587-593 ◽  
Author(s):  
Richard E. Behrman ◽  
Christopher G. Martin ◽  
A. Rebecca Snider ◽  
Steven M. Katz ◽  
Joyce L. Peabody ◽  
...  

PEDIATRICS ◽  
1983 ◽  
Vol 71 (2) ◽  
pp. 296-298
Author(s):  
PETER A. AHMANN ◽  
FRANCINE D. DYKES ◽  
ANTHONY LAZZARA ◽  
W. DEAN WILCOX ◽  
TIMOTHY CARRIGAN ◽  
...  

To the Editor.— Doppler ultrasound assessment of flow velocity in cerebral vessels in neonates has generated intense interest since the technique was originally applied to the preterm infant by Bada et al.1 The value and indication both as a research tool and useful clinical tool have yet to be defined. We have been using a range-gated, pulsed Doppler instrument with a specially designed transducer for the past 18 months and would like to add some comments to those of Bejar et al2 and Volpe et al3 concerning Doppler ultrasound, pulsatility index, patent ductus arteriosus effects on cerebral flow, and autoregulation.


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