Shortcomings in predicting postnatal renal function using prenatal urine biochemistry in fetuses with congenital hydronephrosis

Sophie Guez, Baroukh Maurice Assael, Maria Luisa Melzi, Beatrice Tassis, Umberto Nicolini

Research output: Contribution to journalArticlepeer-review

Abstract

Ten fetuses with hydronephrosis underwent one to seven urine sampling procedures at 23 to 36 weeks' gestation to evaluate renal function. Postnatally, the infants' renal function was assessed by a combination of serum creatinine measurement, ultrasonography, and renal scintigraphy. Six infants had pyelo-ureteric junction obstruction, two had megabladder with megaureter, and two had vesico-ureteric reflux. All infants had normal serum creatinine levels at the time of postnatal follow-up, but five of the seven with unilateral involvement had moderate or severe renal damage. Abnormal urinary electrolyte concentrations were found antenatally in only two of them. For the three infants with bilateral hydronephrosis, postnatal evaluation showed moderately or severely damaged kidneys despite prenatal evidence of normal biochemical indexes. Fetal urine electrolyte measurement may be accurate in the diagnosis of renal dysplasia, but its sensitivity is poor in predicting moderate renal dysfunction.

Original languageEnglish
Pages (from-to)1401-1404
Number of pages4
JournalJournal of Pediatric Surgery
Volume31
Issue number10
DOIs
Publication statusPublished - Oct 1996

Keywords

  • fetal urine biochemistry
  • Hydronephrosis
  • prenatal diagnosis
  • renal function

ASJC Scopus subject areas

  • Surgery

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