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Gestation sac size in in‐vitro fertilization pregnancies
Author(s) -
CRESPIGNY LACHLAN CH.,
ROBINSON HUGH P.,
MURPHY ANTHONY,
McBAIN JOHN C.,
GRONOW MICHAEL,
BAYLY CHRISTINE M.,
IAN W.,
JOHNSTON H.
Publication year - 1985
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1985.tb03076.x
Subject(s) - gestation , gestational sac , in vitro fertilisation , pregnancy , obstetrics , embryo transfer , fetus , gestational age , embryo , singleton , gynecology , medicine , biology , genetics , microbiology and biotechnology
Summary. The gestation sac size in pregnancies resulting from in‐vitro fertilization (IVF) and embryo transfer have been compared with those in spontaneous pregnancies. Small‐for‐dates gestational sac sizes were found in 36% of the IVF pregnancies. This proportion held for both singleton and multiple pregnancies. With increasing gestation beyond 8 weeks the gestation sac volume increasingly approached normal. In contrast to spontaneous conceptions, IVF pregnancies had a low rate of pregnancy loss once fetal heart movements were demonstrated, when the gestation sac size was small‐for‐dates. Small sac size in an IVF pregnancy may lead to the misdiagnosis of a failed pregnancy.