Input:
 

Infant Age		Days Hours
Total Bilirubin		mcmol/L mg% mg/dL
Clinical Risk Group	Gestation >= 38 weeks and medically well (1)
	Gestation >= 38 weeks but clinical risk factors (2)
	Gestation 35-37.9 weeks and medically well (2)
	Gestation 35-37.9 weeks and clinical risk factors (3)

 
Results:
 

 
     

Notes

• This nomogram derived calculator should only be used for infants of 35 weeks geastation or greater.
• Data extracted from the Bhutani study include 36 week infants over 2000 gms and 25 week infants over 2500 gms birth weight.
• These nomograms should NOT be be used to predict the natural history of hyperbilirubinemia.
• Clinical risk factors include:
  1. Isoimmune hemolytic disease or G6PD deficiency
  2. Asphyxia or lethargy
  3. Unstable temperature, sepsis or acidosis
  4. Hypoalbuminemia (less than 3 gm/L, a risk factor when considering phototherapy, not transfusion)

References

1. Bhutani VK, Johnson L, Sivieri EM. Predictive ability of a predischarge hour-specific serum bilirubin for subsequent significant hyperbilirubinemia in healthy term and near-term newborns. Pediatrics. 1999 Jan;103(1):6-14.
2. American Academy of Pediatrics Subcommittee on Hyperbilirubinemia. Management of hyperbilirubinemia in the newborn infant 35 or more weeks of gestation. Pediatrics. 2004 Jul;114(1):297-316.
3. Click for Nomogram for Total Bili Percentiles: Newborns 12-148 hrs
4. Click for Nomogram for Phototherapy Thresholds in Newborns
5. Click for Nomogram for Exchange Transfusion Thresholds in Newborns (12-148 hrs)