Abstract:
:Urinary concentrations of beta 2-microglobulin (beta 2M) and creatinine were measured in normal term infants and in those born with meconium-stained amniotic fluid. None of the infants or their mothers had conditions known to modify beta 2M excretion. Measurements of beta 2M were made on urines collected by bagging; urines obtained from diapers were not satisfactory. Urinary beta 2M concentrations increased significantly (P less than .02) in the normal infants from the first day (0.36 +/- 0.29 mg/L: n = 29) to the third day (0.60 +/- 0.43 mg/L: n = 21) postpartum. Compared with the normal infants, values for the infants with meconium-stained amniotic fluid were increased significantly on days 1 (1.64 +/- 2.16 mg/L: n = 25: P less than .005) and 3 (2.12 +/- 2.04 mg/L: n = 23: P less than .005). Levels exceeded two standard deviations above the normal mean in 12 of the 26 infants with meconium-stained amniotic fluid on postpartum day 1, and 12 of the 23 infants with meconium-stained amniotic fluid on day 3. Urinary creatinine levels were similar in both the normal infants and those with meconium-stained amniotic fluid. All infants with meconium-stained amniotic fluid with a one-minute Apgar score of 6 or less had an elevated urinary beta 2M concentration. The elevated levels of urinary beta 2M in infants with meconium-stained amniotic fluid indicate the existence of tubular dysfunction, probably mild acute tubular necrosis secondary to hypoxia.
journal_name
Pediatricsjournal_title
Pediatricsauthors
Cole JW,Portman RJ,Lim Y,Perlman JM,Robson AMsubject
Has Abstractpub_date
1985-12-01 00:00:00pages
958-64issue
6eissn
0031-4005issn
1098-4275journal_volume
76pub_type
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