Predictors of significant jaundice in late preterm infants

K Radha Lavanya1, Ashish Jaiswal, Pramod Reddy

  • 1Fernandez Hospital, Hyderabad, Andhra Pradesh, India.

Indian Pediatrics
|July 14, 2012
PubMed

Insights

Late preterm infants have a high incidence of significant jaundice. Transcutaneous bilirubin (TcB) measurements at 24-48 hours are more effective predictors of later jaundice than clinical risk factors.

Area of Science:

  • Neonatology
  • Pediatric Gastroenterology
  • Public Health

Background:

  • Late preterm infants (34 0/7 to 36 6/7 weeks gestation) are at increased risk for significant jaundice.
  • Early identification and management of neonatal jaundice are crucial to prevent complications.

Purpose of the Study:

  • To determine the incidence and clinical course of jaundice in late preterm infants.
  • To identify predictors of significant jaundice in this population.

Main Methods:

  • A prospective analytical study was conducted at an urban perinatal center.
  • Late preterm infants were monitored for jaundice until 14 days of life or onset of significant jaundice.
  • Transcutaneous bilirubin (TcB) was measured twice daily for the first 48 hours; clinical risk factors were also recorded.

Main Results:

  • Of 216 infants, 123 (57%) developed significant jaundice, defined by American Academy of Pediatrics (AAP) guidelines.
  • Large for gestational age, lower gestational age, birth trauma, and history of sibling jaundice predicted severe jaundice.
  • TcB measurements at 24-48 hours predicted jaundice onset after 48 hours more effectively than clinical factors.

Conclusions:

  • Significant jaundice is common in late preterm infants.
  • TcB measurements between 24-48 hours of life are superior to clinical risk factors for predicting later significant jaundice.
Abstract

Related Concept Videos

Jaundice01:25

Jaundice

Jaundice, or icterus, is the yellow discoloration of the skin, sclerae, and mucous membranes. It happens when plasma bilirubin levels rise above 2.5-3 mg/dL, leading to bilirubin deposition in tissue.Bilirubin is a byproduct of hemoglobin degradation. In macrophages, hemoglobin breaks down into globin and heme. Globin is converted into amino acids, while heme is turned into biliverdin by heme oxygenase, which is then reduced to unconjugated bilirubin by biliverdin reductase.Unconjugated...
Changes in Skin Color: Clinical Perspectives01:14

Changes in Skin Color: Clinical Perspectives

The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Diseases of the Liver and Gallbladder01:26

Diseases of the Liver and Gallbladder

Liver and gallbladder diseases are a significant health concern, with prominent conditions including cirrhosis, hepatitis, non-alcoholic fatty liver disease (NAFLD), and gallstones. Jaundice is a common manifestation of liver and biliary disease.
Cirrhosis is characterized by the scarring of hepatic lobules in the liver, which are replaced by fibrous tissue, affecting the liver's normal functioning. NAFLD, on the other hand, is caused by an excessive build-up of fat in the liver, not related to...
Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

Understanding the physiological differences in the pediatric population is crucial for effective pharmacotherapy. Neonates, infants, and children exhibit significant variations in gastric pH, gastric emptying time, intestinal transit time, and biliary function. These variations profoundly affect oral drug absorption, necessitating a nuanced approach to pediatric dosing.Neonates present with a unique physiological profile, having a gastric pH greater than 4 and faster and more irregular gastric...
Development of Immunocompetence01:22

Development of Immunocompetence

The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...