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Survival Rate in Very Low Birth Weight Infants

Korean Journal of Pediatrics 2004;47(5):505-509.
Published online May 15, 2004.
Survival Rate in Very Low Birth Weight Infants
Jae Ju Cho, Soon Bum Lee, Woo Sung Park, Young Pyo Chang
Department of Pediatrics, College of Medicine, Dankook University, Cheonan, Korea
극소저출생 체중아의 생존율
조재주, 이순범, 박우성, 장영표
단국대학교 의과대학 소아과학교실
Correspondence: 
Young Pyo Chang, Email: ychang@dku.edu
Abstract
Purpose
: We observed changes in the outcome of very low birth weight infants(VLBWI) admitted to the neonatal intensive care unit(NICU) of Dankook University Hospital(DKUH) in the last six years.
Methods
: The distribution of birth weight and gestational age, survival rate, neonatal complications, and causes of death for 228 VLBWI who had been admitted to DKUH from 1st January 1997 to 31th December 2002, were observed by retrospective review of medical records. We compared the above variables between period I(1997-1999) and period II(2000-2002).
Results
: The mean birth weight, mean gestational age, gender ratio, rate of inborn infants, and other perinatal and obstetric variables were not significantly different between the two periods, except for the rate of infants with Apgar scores less than 4 at 5 min. The survival rate of VLBWI significantly increased from period I(81.0%) to period II(85.4%)(P<0.05). Major neonatal complications of VLBWI were respiratory distress syndrome, bronchopulmonary dysplasia, retinopathy of prematurity, necrotizing enterocolitis, periventricular leukomalasia and intraventricular hemorrhage. The most common cause of death in VLBWI was pulmonary hemorrhage, and the age of death was mostly less than seven days after birth.
Conclusion
: The survival rate of VLBWI who had been admitted to the NICU of DKUH was increased without any increase in major complications, and this increase(4.4%) in survival rate was mainly from the increase in survival rate of infants with birth weights of less than 1,000 gm and gestational ages of less than 28 weeks.
Key Words: Very low birth weight infants, Prematurity, Newborn, Survival rate


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