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Is There Any Relationship between Hyperbilirubinemia and Pelvicaliceal Dilatation in Newborn Babies?

AUTHORS

Salih Kavukcu 1 , Cengiz Ozturk 2 , Melek Avci 3 , Talha Akil 2 , İpek Akil 4 , *

1 Department of Pediatrics, Dokuz Eylul University, Izmir, Turkey

2 Division of Pediatrics, Ekrem Hayri Ustundag Hospital, Izmir, Turkey

3 Division of Radiology, Ekrem Hayri Ustundag Hospital, Izmir, Turkey

4 Department of Pediatrics, Celal Bayar University, Izmir,, Turkey

How to Cite: Kavukcu S, Ozturk C, Avci M, Akil T, Akil İ. Is There Any Relationship between Hyperbilirubinemia and Pelvicaliceal Dilatation in Newborn Babies?, Iran J Pediatr. 2016 ; 22(1):431-435.

ARTICLE INFORMATION

Iranian Journal of Pediatrics: 22 (1); 431-435
Published Online: December 31, 2011
Article Type: Research Article
Received: July 30, 2010
Accepted: March 06, 2011

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Abstract

Objective: A recent study reported association of high bilirubin concentrations with decrease in basal vesical tonicity and relaxation of pre-contracted ureteral and vesical smooth muscles in vitro, and authors discussed that recovery of antenatal hydronephrosis might partly be associated with decreased bladder resistance to the urine flow due to hyperbilirubinemia. We aimed to investigate whether any relationship between serum bilirubin levels and antero-posterior renal pelvic diameters or pelvicaliceal dilatations exist during newborn period.
Methods: Neonates with hyperbilirubinemia (group 1) and healthy neonates (group 2) were randomly selected to the study. Capillary blood samples were used to measure micro-bilirubin. Urinary system ultrasound (US) was performed in both groups by an experienced radiologist.
Findings: Group 1 (31 neonates, 16 males, 15 females) and group 2 (22 neonates, 11 males, 11 females) were identical by means of postnatal age, gender and weight (P>0.05). Mean serum bilirubin levels were 11.1±3.1 mg/dl and 1.4±0.2 mg/dl in group 1 and 2, respectively. Renal length and renal pelvis antero-posterior (AP) diameters were not different between study groups. Pelvis AP diameters of right kidney were 2.1±0.7 mm in group 1 and 1.9±0.7 mm in group 2, and of left kidney were 2.4±0.8 mm in group 1 and 2.3±0.6 mm in group 2. There was no correlation between bilirubin levels and renal length and renal pelvis AP diameters (P>0.05).
Conclusion: In this study we were not able to demonstrate any relationship between serum bilirubin levels and renal pelvic diameters and pelvicaliceal dilatation in hyperbilirubinemic neonates. So, it is thought that hyperbilirubinemia might not have a direct effect on outcome of the pelvicaliceal dilatation.

 

Keywords

Hyperbilirubinemia Newborn Antenatal Hydronephrosis Pelvicaliceal Dilatations

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