Korean J Pediatr.  2009 Jun;52(6):655-660. 10.3345/kjp.2009.52.6.655.

Multicenter clinical study on birth weight and associated anomalies of single umbilical artery

Affiliations
  • 1Department of Pediatrics, College of Medicine, Konyang University, Korea. limsoa@hanmail.net
  • 2Department of Pediatrics, Gangneung Asan Medical Hospital, Korea.
  • 3Department of Pediatrics, College of Medicine, Konkuk University Hospital, Korea.
  • 4Department of Pediatrics, College of Medicine, Keimyung University Hospital, Korea.
  • 5Department of Pediatrics, College of Medicine, Sung-Ae General Hospital, Korea.
  • 6Department of Pediatrics, College of Medicine, Chosun University Hospital, Korea.
  • 7Department of Pediatrics, College of Medicine, Chung Ang University, Seoul, Korea.

Abstract

PURPOSE
To compare birth weight between infants with a single umbilical artery (SUA) and normal infants, investigate the associated anomalies of infants with SUA and isolated SUA (no abnormality of external appearance on birth, except SUA), and determine the prognosis of infants with isolated SUA. METHODS: Live-born infants with SUA (n=59) detected by physical examination from among 15,193 live births in seven university hospitals in Korea between January 1, 2004, to August 1, 2007, were reviewed retrospectively, with 236 normal infants serving as the control group. RESULTS: A statistical difference was observed between the groups in birth weight and in vitro fertilization. The incidence of infants with SUA was 0.37%. Congenital malformations were observed in 21 infants with cardiovascular (n=15, 25.4%), gastrointestinal (n=2, 3.4%), genitourinary (n=9, 15.3%), neuromusculoskeletal (n=6, 10.2%), central nervous system (n=1, 1.7%), chromosomal (n=1, 1.7%), and other (n=3, 5.1%) abnormalities. There were 49 (83.1%) infants with isolated SUA in this study population; among them, the associated congenital malformations were cardiovascular (n=6, 12.2%) and genitourinary (n=6, 12.2%) abnormalities. Two infants with cyanotic heart disease were operated and four infants with acyanotic heart disease showed improvements without any treatment. Six infants with genitourinary abnormalities on renal ultrasound had mild hydronephrosis without further consequences. CONCLUSION: The incidence of structural abnormalities in the cardiovascular and genitourinary systems is high and the genitourinary anomalies associated with isolated SUA have relatively good prognosis.

Keyword

Umbilical artery; Congenital malformation

MeSH Terms

Birth Weight
Central Nervous System
Fertilization in Vitro
Heart Diseases
Hospitals, University
Humans
Hydronephrosis
Incidence
Infant
Korea
Live Birth
Parturition
Physical Examination
Prognosis
Retrospective Studies
Single Umbilical Artery
Umbilical Arteries
Urogenital Abnormalities
Urogenital System
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