- An elevated level of the pigment bilirubin in the blood. A sufficient elevation will produce jaundice. Some degree of hyperbilirubinemia is very common in babies right after birth, especially premies.
* * *An abnormally large amount of bilirubin in the circulating blood, resulting in clinically apparent icterus or jaundice when the concentration is sufficient.- neonatal h. serum bilirubin greater than 12.9 mg/dl (220 μol/L) or rising at a rate greater than 5 mg/dl per day; also applied to a nonphysiologic pattern of h., i.e., jaundice in the first 24 hours of life or extending beyond the first week of life in term infants.
* * *hy·per·bil·i·ru·bin·emia or chiefly Brit hy·per·bil·i·ru·bin·ae·mia -.bil-ē-.rü-bin-'ē-mē-ə n the presence of an excess of bilirubin in the blood called also bilirubinemia
* * *hy·per·bil·i·ru·bin·emia (hi″pər-bil″ĭ-roo″bĭ-neґme-ə) excessive bilirubin in the blood, which may lead to jaundice; the hyperbilirubinemias are classified as either conjugated or unconjugated, according to the predominant form of bilirubin involved.
Medical dictionary. 2011.