RT Book, Section
A1 Cunningham, F. Gary
A1 Leveno, Kenneth J.
A1 Bloom, Steven L.
A1 Spong, Catherine Y.
A1 Dashe, Jodi S.
A1 Hoffman, Barbara L.
A1 Casey, Brian M.
A1 Sheffield, Jeanne S.
SR Print(0)
ID 1102101950
T1 Ectopic Pregnancy
T2 Williams Obstetrics, 24e
YR 2013
FD 2013
PB McGraw-Hill Education
PP New York, NY
SN 978-0-07-179893-8
LK accessmedicine.mhmedical.com/content.aspx?aid=1102101950
RD 2021/01/28
AB Following  fertilization  and  fallopian  tube  transit,  the  blastocyst  normally  implants  in  the  endometrial  lining  of  the  uterine  cavity.  Implantation  elsewhere  is  considered  ectopic  and  comprises  1  to  2  percent  of  all  first-trimester  pregnancies  in  the  United  States.  This  small  proportion  disparately  accounts  for  6  percent  of  all  pregnancy-related  deaths  (Berg,  2010;  Stulberg,  2013).  In  addition,  the  chance  for  a  subsequent  successful  pregnancy  is  reduced  after  an  ectopic  pregnancy.  Fortunately,  urine  and  serum  beta-human  chorionic  gonadotropin  (β-hCG)  assays  and  transvaginal  sonography  have  made  earlier  diagnosis  possible.  And  as  a  result,  both  maternal  survival  rates  and  conservation  of  reproductive  capacity  are  improved.