Normal value of jaundice in 40-day-old baby

For 40-day-old babies, their physical fitness is still relatively low and they need special care to avoid some diseases. You may find that the jaundice in your baby has not completely subsided. In this case, you don’t need to be overly nervous. Just observe your baby’s physical condition and changes. Regular check-ups are necessary to clearly determine the normal value of jaundice.

1. Physiological jaundice

In mild cases, the disease is light yellow and limited to the face and neck, or spread to the trunk. The sclera may also turn yellow and then disappear after 2 to 3 days, and the skin color returns to normal on the 5th to 6th day. In severe cases, jaundice may spread to the head and then the feet, and the vomitus and cerebrospinal fluid may also turn yellow for more than a week. In particular, some premature infants may persist for up to 4 weeks. Their stool is still yellow and there is no bilirubin in the urine.

(1) In mild cases, jaundice is light pink in color, while in severe cases, the color is darker, but the skin is rosy yellow with a hint of red.

(2) Jaundice is mostly found on the trunk, sclera and proximal limbs, usually not exceeding the elbows and knees.

(3) The newborn is generally in good condition, has no anemia, no hepatosplenomegaly, normal liver function, and no kernicterus.

(4) Physiological jaundice is more common in premature infants than in full-term infants and may appear slightly later, 1 to 2 days later. The more severe the jaundice, the slower it disappears, which may last up to 2 to 4 weeks.

2. Pathological jaundice

It often has the following characteristics: ① Early onset, within 24 hours after birth; ② Severe degree, greater than 12.9 mg/dl in full-term infants and greater than 15 mg/dl in premature infants; ③ Rapid progression, with serum bilirubin rising by more than 5 mg/dl per day; ④ Long duration, or recurrence.

(1) Jaundice may affect not only the face and trunk, but also the limbs, hands, and soles of the feet.

(2) The color of jaundice is mainly orange or golden yellow due to increased unconjugated bilirubin; it is mainly dark green or yellow due to increased conjugated bilirubin.

(3) Accompanying symptoms: Hemolytic jaundice is often accompanied by anemia, hepatosplenomegaly, petechiae, edema, and heart failure. Infectious jaundice is often accompanied by fever, symptoms and signs of infection and poisoning. Obstructive jaundice is often accompanied by liver enlargement, white stools and yellow urine.

(4) Systemic symptoms may occur in severe jaundice, with symptoms such as poor response, mental depression, and anorexia. Low muscle tone, followed by irritability, screaming, difficulty breathing, convulsions or opisthotonos, increased muscle tone, etc.