What does it mean if a newborn has high jaundice on the second day?
Oct 09, 2022
Source: Cainiu Health
Dr. Xie Zixing
Introduction
High jaundice in newborns on the second day may result from excessive production of bilirubin compared to its excretion, leading to impaired bilirubin elimination and causing a temporary increase in serum bilirubin levels, which is classified as physiological jaundice. Additionally, if newborns develop infections after birth, this may impair the liver's ability to metabolize bilirubin, or if they have hemolytic disease causing large amounts of bilirubin to enter the bloodstream, these conditions can also lead to elevated jaundice.
Elevated jaundice in newborns on the second day may be due to physiological jaundice, or pathological jaundice caused by infections or hemolytic disease.
1. Physiological Jaundice
At birth, if a newborn produces more bilirubin than can be excreted and the liver cells have limited ability to uptake bilirubin, this typically leads to abnormal bilirubin excretion. As a result, large amounts of bilirubin are reabsorbed from the intestines back into the bloodstream, causing a temporary increase in serum bilirubin levels. This results in elevated jaundice on the second day, which is usually classified as physiological jaundice and generally resolves within seven to ten days.
2. Infection
Newborns have relatively weak immune systems, making them susceptible to infections by pathogens such as bacteria and viruses. These infections can lead to extensive destruction of red blood cells and may also impair normal liver function, disrupting the liver's ability to metabolize and convert bilirubin, thereby causing increased jaundice.
3. Hemolytic Disease
If a newborn has hemolytic disease, it typically causes increased destruction of red blood cells, releasing large amounts of bilirubin into the bloodstream, which may also lead to elevated jaundice.
