RT Book, Section
A1 Bianchi, Diana W.
A1 Crombleholme, Timothy M.
A1 D'Alton, Mary E.
A1 Malone, Fergal D.
SR Print(0)
ID 1106401625
T1 Oligohydramnios
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=1106401625
RD 2024/04/19
AB Key  PointsOligohydramnios  is  a  decrease  in  the  volume  of  amniotic  fluid,  with  the  diagnosis  usually  being  made  using  ultrasound.Causes  of  oligohydramnios  include  ruptured  membranes,  placental  insufficiency,  fetal  anomalies,  maternal  injestion  of  medications,  complications  of  a  multiple  gestation,  chromosomal  abnormalities,  and  idiopathic.Significant  oligohydramnios  occurring  prior  to  22  weeks  of  gestation  is  associated  with  a  poor  prognosis  because  of  a  high  likelihood  of  pulmonary  hypoplasia  and  associated  malformations.Once  oligohydramnios  is  diagnosed,  a  careful  maternal  history  should  be  obtained  and  a  physical  examination  should  be  performed  to  evaluate  for  preterm  premature  rupture  of  membranes.Whenever  a  diagnosis  of  oligohydramnios  is  made,  a  careful  sonographic  anatomical  survey  should  be  performed  to  evaluate  for  fetal  anomalies  such  as  features  of  urinary  tract  obstruction  or  renal  malformation.Amnioinfusion  may  assist  sonographic  visualization  of  the  fetus  when  severe  oligohydramnios  is  diagnosed  in  the  midtrimester.Management  of  oligohydramnios  secondary  to  preterm  premature  rupture  of  membranes  depends  on  the  gestational  age  and  on  the  fetal  and  maternal  status.Long-term  outcome  will  depend  on  gestational  age  at  diagnosis,  etiology  of  the  problem,  and  gestational  age  at  delivery.