J Korean Soc Neonatol.  2010 May;17(1):75-83.

Predictors of Failed Closure of Patent Ductus Arteriosus with the First Course of Indomethacin in Preterm Infants

• Lee MY
• Lim DH
• Park KH
• Lee JH
• Choi BM
• Yoo KH
• Hong YS
• Lee JW

Abstract

PURPOSE
This study was performed to determine the predictors of failed closure of a patent ductus arteriosus (PDA) following the first course of indomethacin in symptomatic preterm infants.
METHODS
Forty three of 43 preterm infants, admitted to the neonatal intensive care unit diagnosed with PDA and treated with indomethacin at the Korea University Medical Center between January 1990 and October 2007, ware studied. The perinatal risk factors affecting the failed closure of PDA were retrospectively assessed.
RESULTS
The failed PDA closure group included 16 (37%) out of 43 infants three of whom underwent surgery. The closure group included 27 (63%) out of 43 infants. In the failed closure group, the Apgar scores (1 min, 5 min) were significantly higher (P<0.05) and antenatal steroid administration was significantly lower (P<0.05). In addition, dopamine administration was significantly lower (P<0.05) and the mean postnatal age at diagnosis was significantly lower (P<0.05). Multiple logistic regression for the prediction of failed PDA closure found only antenatal steroid administration (OR 0.092, CI 0,010-0.826, P=0.0331) as an associated factor.
CONCLUSION
In patients with antenatal steroid administration the failed PDA closure rate was significantly lower. Therefore, antenatal steroid administration can be considered as an important factor for the closure of PDA in preterm pregnancies.

Keyword

Ductus Arteriosus; Patent; Indomethacin; Infant; Premature

MeSH Terms

Academic Medical Centers
Dopamine
Ductus Arteriosus
Ductus Arteriosus, Patent
Humans
Indomethacin
Infant
Infant, Newborn
Infant, Premature
Intensive Care, Neonatal
Korea
Logistic Models
Pregnancy
Retrospective Studies
Risk Factors
Dopamine
Indomethacin