Korean Journal of Pediatrics 2007;50(11):1072-1077.
Published online November 15, 2007.
Incidence of breast milk jaundice in healthy full-term infants
Yong Ho Yoon, Kyong Eun Choi, Kyung Ah Kim, Sun Young Ko, Yeon Kyung Lee, Son Moon Shin
Department of Pediatrics, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
건강한 만삭아에서 모유황달의 발생 빈도
윤용호, 최경은, 김경아, 고선영, 이연경, 신손문
관동대학교 의과대학 제일병원 소아청소년과
Correspondence: 
Son Moon Shin, Email: smshinmd@hanmail.net
Abstract
Purpose
: It has been described that the incidence of breastfeeding jaundice is 13% and that of breast milk jaundice is 2%. The incidence in Korea was believed to be higher, but there were no studies to prove this assumption. The purpose of this study was to investigate the incidence of jaundice of healthy breastfed full-term infants in Korea.
Methods
: 839 infants were enrolled who were admitted to the Postpartum Care Center of the Cheil General Hospital between January 1 and December 31, 2005, and were followed up for more than 7 days. Those infants were divided into 3 groups; Exclusive breastfeeding group; Partial breastfeeding group; Formula feeding group. If they became icteric, transcutaneous bilirubin (TcB) was measured by research nurses with JM-103 Jaundice meter (Konica Minolta sensing, Inc., Osaka, Japan). Using this method we investigated the incidence of breast milk jaundice of healthy breastfed full-term infants.
Results
: There were no significant differences in sex, birth weight, Apgar score, or obstetric risk factors among 3 groups but there were higher rates of vaginal delivery in the exclusive breastfeeding group. The incidence of breast milk jaundice was 10.8% in the exclusive breastfeeding group and 4.4% in the partial breastfeeding group. The incidence of breast milk jaundice in the breastfed infants was 6.3%. The incidence was significantly higher in the exclusive breastfeeding group than in the partial breastfeeding group.
Conclusion
: The incidence of breast milk jaundice of healthy breastfed full-term infants was 6.3%. It was found that the incidence of breast milk jaundice was higher in this study than in other countries. But it was not a population-based study, so further study with the large sample sizes is needed.
Key Words: Jaundice, Breast milk, Breastfeeding, Incidence


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