Successful pregnancy rates achieved with day 4 embryo transfers.
OBJECTIVE
To assess the success of day 4 embryo transfers (ETs) following IVF at one institution.


METHODS
Retrospective analysis.


METHODS
A university hospital IVF program.


METHODS
Two hundred nondonor, fresh IVF cycles.


METHODS
None.


METHODS
Outcomes of IVF. Outcome assessments after day 4 ETs included rates of implantation, clinical pregnancy, and singleton and multiple live births.


RESULTS
The overall live-birth rate was 54.4%. Implantation rates were highest in younger age groups, and similar in patients 35-40 years of age. Pregnancy and live-birth rates were similar across all age groups up to age 40 years. Multiple gestations were highest in women < or =40 years of age.


CONCLUSIONS
Acceptable pregnancy rates can be achieved with day 4 ETs.
Skorupski
Josh C
JC
Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, St. Luke's-Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons, New York, New York 10019, USA. josh_skorupski@hotmail.com
Stein
Daniel E
DE
Acholonu
Uchenna
U
Field
Heather
H
Keltz
Martin
M
D000328:Adult; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D018873:Pregnancy Rate; D019836:Preimplantation Diagnosis; D012189:Retrospective Studies