Comparison of Doppler parameters of central versus intraparenchymal renal arteries in physiologically normal newborns

Changes in renal arterial Doppler flow may identify parenchymal disease, but in newborns knowledge of normal physiological parameters is a prerequisite for correct interpretation. To evaluate renal blood flow in healthy newborns by means of Doppler US. On the fourth day of life we examined 100 norma...

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Bibliographic Details
Published in:Pediatric radiology 2004-07, Vol.34 (7), p.552-555
Main Authors: Stavel, Miroslav, Zibolen, Mirko, Kolarovszka, Hana, Murgas, Dalibor
Format: Article
Language:English
Subjects:
Blood Flow Velocity
Female
Humans
Infant, Newborn
Male
Reference Values
Renal Artery - diagnostic imaging
Renal Artery - physiology
Renal Circulation - physiology
Ultrasonography, Doppler
Vascular Resistance
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Summary:Changes in renal arterial Doppler flow may identify parenchymal disease, but in newborns knowledge of normal physiological parameters is a prerequisite for correct interpretation. To evaluate renal blood flow in healthy newborns by means of Doppler US. On the fourth day of life we examined 100 normal term newborn infants (200 kidneys). Blood flow in the central renal arteries was compared with that in the intraparenchymal arteries. Maximum systolic velocity ( V(max)), end-diastolic velocity ( V(ed)), mean flow velocity ( V(mean)), resistive index (RI) and pulsatility index (PI) were assessed. All parameters were significantly higher in the central renal arteries than in the intraparenchymal arteries (RI 0.78+/-0.07 vs 0.62+/-0.05, P
ISSN:0301-0449
1432-1998
DOI:10.1007/s00247-004-1189-5