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Total bilirubin more than 331.5 μmol/L (19.5 mg/dL) (hyperbilirubinemia). Direct bilirubin more than 34 μmol/L (2.0 mg/dL). The signs which help detect pathological jaundice are the presence of intrauterine growth restriction , stigma of intrauterine infections (e.g. cataracts , small head , and enlargement of the liver and spleen ...
Neonatal cholestasis refers to elevated levels of conjugated bilirubin identified in newborn infants within the first few months of life. [1] Conjugated hyperbilirubinemia is clinically defined as >20% of total serum bilirubin or conjugated bilirubin concentration greater than 1.0 mg/dL regardless of total serum bilirubin concentration. [2]
Jaundice in infants, as in adults, is characterized by increased bilirubin levels (infants: total serum bilirubin greater than 5 mg/dL). Normal physiological neonatal jaundice is due to immaturity of liver enzymes involved in bilirubin metabolism, immature gut microbiota, and increased breakdown of fetal hemoglobin (HbF). [ 54 ]
Bilirubin (BR) (from the Latin for "red bile") is a red-orange compound that occurs in the normal catabolic pathway that breaks down heme in vertebrates.This catabolism is a necessary process in the body's clearance of waste products that arise from the destruction of aged or abnormal red blood cells. [3]
Short title: Birth to 36 months: Boys, Head circumberence-for-age and Weight-for-length percentiles: Image title: CDC Growth Charts: United States: Author
The AAP recommends "In isoimmune hemolytic disease, administration of intravenousγ-globulin (0.5–1 g/kg over 2 hours) is recommended if the TSB (total serum bilirubin) is rising despite intensive phototherapy or the TSB level is within 2 to 3 mg/dL (34–51 μmol/L) of the exchange level.
Analysis of urine porphyrins shows a normal level of coproporphyrin, but the I isomer accounts for 80% of the total (normally 25%). [ citation needed ] For the first two days of life, healthy neonates have ratios of urinary coproporphyrin similar to those seen in patients with Dubin–Johnson syndrome; by 10 days of life, however, these levels ...
Crigler–Najjar syndrome is a rare inherited disorder affecting the metabolism of bilirubin, a chemical formed from the breakdown of the heme in red blood cells. The disorder results in a form of nonhemolytic jaundice, which results in high levels of unconjugated bilirubin and often leads to brain damage in infants.