RT Book, Section
A1 Bianchi, Diana W.
A1 Crombleholme, Timothy M.
A1 D'Alton, Mary E.
A1 Malone, Fergal D.
SR Print(0)
ID 1106400819
T1 Single Umbilical Artery
T2 Fetology: Diagnosis and Management of the Fetal Patient, 2e
YR 2015
FD 2015
PB McGraw-Hill Education
PP New York, NY
SN 978-0-07-144201-5
LK obgyn.mhmedical.com/content.aspx?aid=1106400819
RD 2024/04/18
AB Key  PointsSingle  umbilical  artery  (SUA)  is  one  of  the  most  common  malformations  found  in  humans.Color  Doppler  techniques  have  improved  the  ability  to  visualize  vessels  in  the  umbilical  cord,  particularly  in  a  transverse  view  through  the  fetal  bladder.Detailed  sonographic  evaluation  of  fetal  anatomy  is  important  to  determine  if  SUA  is  isolated  or  associated  with  other  anomalies.If  isolated,  fetal  echocardiography  should  be  considered,  but  karyotype  is  not  indicated.If  associated  anomalies  are  present,  fetal  karyotype  should  be  obtained,  with  trisomy  18  being  the  most  commonly  associated  aneuploidy.SUA  is  associated  with  increased  perinatal  mortality,  increased  chance  of  IUGR,  and  slightly  increased  prematurity.If  no  additional  anomalies  are  detected,  postnatal  urologic  radiographic  investigations  are  not  indicated.For  surviving  infants,  long-term  prognosis  is  excellent.