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Single Umbilical Artery Risk Factors and Pregnancy Outcomes
- Source :
- Obstetrics & Gynecology. 116:843-850
- Publication Year :
- 2010
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2010.
-
Abstract
- To identify risk factors for fetuses and neonates with single umbilical artery and isolated single umbilical artery (single umbilical artery in the absence of chromosomal abnormalities and structural abnormalities) and to assess whether there is an increased risk for complications during pregnancy, labor, and delivery, and for perinatal morbidity and mortality.A population-based retrospective cohort analysis of deliveries in Nova Scotia, Canada, between 1980 and 2002 was conducted using the Nova Scotia Atlee Perinatal Database. Risk factors and outcomes for single umbilical artery and isolated single umbilical artery pregnancies were compared with three-vessel-cord pregnancies. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated for each outcome using multiple logistic regression to adjust for confounding factors. Separate models were run for single umbilical artery and isolated single umbilical artery.There were 203,240 fetuses and neonates available for analysis, with 885 (0.44%) having single umbilical artery and 725 (0.37%) having isolated single umbilical artery. Single umbilical artery fetuses and neonates had a 6.77 times greater risk of congenital anomalies and 15.35 times greater risk of chromosomal abnormalities. The most common congenital anomalies in chromosomally normal fetuses and neonates were genitourinary (6.48%), followed by cardiovascular (6.25%) and musculoskeletal (5.44%). For isolated single umbilical artery, placental abnormalities (OR 3.63, 95% CI 3.01-4.39), hydramnios (OR 2.80, 95% CI 1.42-5.49), and amniocentesis (OR 2.52, 95% CI 1.82-3.51) occurred more frequently than with three vessel cords. Neonates with single umbilical artery and isolated single umbilical artery had increased rates of prematurity, growth restriction, and adverse neonatal outcomes.Fetuses and neonates with single umbilical artery and isolated single umbilical artery are at increased risk for adverse outcomes. Identification of single umbilical artery is important for prenatal diagnosis of congenital anomalies and aneuploidy. Increased surveillance with isolated single umbilical artery may improve pregnancy outcomes.II.
- Subjects :
- medicine.medical_specialty
Umbilicus (mollusc)
Cardiovascular Abnormalities
Umbilical Arteries
Pregnancy
Risk Factors
medicine.artery
Odds Ratio
Humans
Medicine
Abnormalities, Multiple
Risk factor
Chromosome Aberrations
Fetus
business.industry
Single umbilical artery
Obstetrics
Obstetrics and Gynecology
Confounding Factors, Epidemiologic
Umbilical artery
Odds ratio
medicine.disease
Musculoskeletal Abnormalities
Obstetric Labor Complications
Pregnancy Complications
Logistic Models
Urogenital Abnormalities
Gestation
Female
business
Subjects
Details
- ISSN :
- 00297844
- Volume :
- 116
- Database :
- OpenAIRE
- Journal :
- Obstetrics & Gynecology
- Accession number :
- edsair.doi.dedup.....9f60675cc46e511511eabd73797a17b5