Transcutaneous bilirubin measurements in the assessment and management of neonatal jaundice
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چکیده
Pathophysiology of jaundice Jaundice is defined as the yellowish discoloration of the skin, mucous membranes and conjunctival membranes caused by hyperbilirubinemia, which is an excess of bilirubin in the blood. Discoloration is most noticeable in the face and descends cephalocaudally; with clearance of the yellowish hue occurring in the opposite direction. Most adults are visibly jaundiced when serum bilirubin exceeds 2.0mg/dL, four times the usual value of 0.5mg/dL. Infants are visibly jaundiced when serum bilirubin levels exceed 7.0mg/dL.
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