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Assessment of renal circulation in small for gestational age and appropriate for gestational age term newborns: A prospective study
Author(s) -
Kolarovszka Hana,
Zibolen Mirko,
Stavel Miroslav,
Matasova Katarina,
Kolarovszki Branislav,
Ciljak Martin,
Baska Tibor
Publication year - 2008
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.20421
Subject(s) - medicine , gestational age , renal circulation , small for gestational age , diastole , prospective cohort study , appropriate for gestational age , ultrasound , blood flow , intrauterine growth restriction , gestation , renal blood flow , cardiology , renal artery , vascular resistance , hemodynamics , kidney , pregnancy , blood pressure , radiology , genetics , biology
Purpose To compare selected parameters of renal circulation between small for gestational age (SGA) and appropriate for gestational age (AGA) newborns. Methods Fifty‐two SGA and 100 AGA term newborns were examined. The size of the kidneys were measured, and renal blood flow in the central and intraparenchymal renal arteries were assessed via Doppler sonography. Peak systolic velocity (PSV), end diastolic velocity (EDV), mean blood flow velocity (V mean), resistance index (RI), and pulsatility index (PI) were determined and compared between the groups. Results No statistically significant differences in the velocity parameters were found between SGA and AGA infants in central renal arteries. Slightly higher RIs and PIs were seen in AGA newborns (RI, 0.76 ± 0.13 versus 0.78 ± 0.06 [ p < 0.05]; PI, 1.65 ± 0.54 versus 1.84 ± 0.46 [ p < 0.05]). There were statistically significant differences between the groups in all measured parameters in intraparenchymal arteries (RI, 0.57 ± 0.11 versus 0.63 ± 0.05 [ p < 0.001]; PI, 0.89 ± 0.26 versus 1.09 ± 0.16 [ p < 0.001]) except PSV (7.11 ± 1.55 versus 7.14 ± 0.81 cm/s [ p > 0.05]). Conclusion Based on our findings, we suggest that renal circulation is not negatively influenced by intrauterine growth restriction in SGA neonates compared with AGA newborns. © 2007 Wiley Periodicals, Inc. J Clin Ultrasound, 2008