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'Idiopathic' jaundice in Sardinian full-term newborn infants: a multivariate study
C Corchia1, M C Sanna, C Serra
1Department of Child Health and Neonatology, University of Sassari Medical School, Italy.
Paediatric and Perinatal Epidemiology
|January 1, 1993
Summary
Neonatal hyperbilirubinaemia, or jaundice, affects many healthy newborns in Sardinia. Factors like high alpha-fetoprotein and family history suggest a genetic link to this common condition.
Area of Science:
- Neonatology
- Pediatrics
- Genetics
Background:
- Neonatal hyperbilirubinaemia is a common condition in newborns.
- Sardinia exhibits a high incidence of neonatal jaundice.
- Previous studies have not fully elucidated the causes of idiopathic neonatal jaundice.
Purpose of the Study:
- To investigate the incidence and potential risk factors of 'idiopathic' hyperbilirubinaemia in healthy, full-term Sardinian infants.
- To identify factors associated with elevated serum bilirubin levels in the first four days of life.
Main Methods:
- Study included 431 healthy, full-term singleton Sardinian infants (birthweight ≥ 2500g).
- Infants were ABO and Rh compatible with mothers, free from malformations, and not G6PD deficient.
- Logistic regression analysis was used to identify associated factors for jaundice (serum bilirubin > 11.9 mg/dl).
Main Results:
- 37.1% of infants had serum bilirubin levels > 11.9 mg/dl, and 15.3% had levels > 14.9 mg/dl.
- Breastfeeding (94% of infants) did not correlate with a different incidence of jaundice.
- High cord blood alpha-fetoprotein, history of jaundice in siblings, delayed meconium passage, and weight loss were associated with neonatal jaundice.
Conclusions:
- The high rate of neonatal hyperbilirubinaemia in Sardinia may be linked to constitutional and hereditary factors.
- Further research into genetic predispositions is warranted.
- These findings contribute to understanding the etiology of neonatal jaundice in specific populations.