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A Clinical Study of Single Umbilical Artery

Journal of the Korean Pediatric Society 1998;41(4):498-504.
Published online April 15, 1998.
A Clinical Study of Single Umbilical Artery
Mi Yeon Choi1, Young Jun Kim1, Young Ah Lee1, Ha Joo Choi1, Woo Kap Chung1, Keun Young Lee2
1Department of Pediatrics, College of Medicine, Hallym University, Seoul, Korea
2Department of Obstetrics and Gynecology, College of Medicine, Hallym University, Seoul, Korea
단일 제대동맥의 임상적 고찰
최미연1, 김영준1, 이영아1, 최하주1, 정우갑1, 이근영2
1한림대학교 의과대학 소아과학교실
2한림대학교 의과대학 산부인과학교실
Correspondence: 
Mi Yeon Choi, Email: 1
Abstract
Purpose
: Single umbilical artery(SUA), the most common malformation of the umbilical cord, has long been of interest because of its association with congenital malformations. This retrospective study was aimed to evaluate the incidence of SUA and its associated malformations. Method : The study population was inborn neonates of Kang-Nam Sacred Heart Hospital of Hallym University. We reviewed retrospectively the medical records of 15 infants with SUA, including 1 infant identified in prenatal ultrasonography.
Results
: The incidence of SUA was 0.2%(15/9,351 cases). The mean birth weight was 2,658 gram(ranged from 1,060 to 3,700gram), and the mean gestational age was 38 weeks(ranged from 32 to 40+3weeks). Six cases(40%) of 15 cases with SUA were associated with congenital malformations : urogenital malformations in 4 cases, cardiovascular malformations in 3 cases, and musculoskeletal malformations in 3 cases. Only 1 case had abmormal karyotype, trisomy 18.
Conclusion
: Because SUA is highly associated with congenital malformations newborns with SUA should have a thorough and complete physical examination at birth and physicians should also be alert to the possibility of congenital malformations not evident at initial examination. Furthermore, prenatal detection of SUA has potential importance, since it may indicate that further work is necessary to rule out associated malformations and to help determine whether management should beltered.
Key Words: Single umbilical artery, Malformations and chromosomal abnormalities


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