Human chorionic gonadotropin-to-oocyte collection interval in a superovulation IVF program. A prospective study.
OBJECTIVE
The aim of this study was to investigate whether the hCG-oocyte collection interval has any influence on the oocyte recovery rate, fertilization rate, and outcome of IVF-ET cycles.


METHODS
Five hundred thirty-three consecutive patients undergoing their first IVF-ET treatment cycle at King's Assisted Conception Unit between 1993 and 1995 were included in this study.


RESULTS
There was no significant difference in the oocyte recovery rates, fertilization rates, or outcome of IVF-ET treatment among the hCG-oocyte collection intervals examined (33-41 hr). None of the 533 women studied had ovulated before oocyte collection.


CONCLUSIONS
The results do not suggest a trend toward increased ovulation more than 36 hr after hCG administration.
Nargund
G
G
Department of Obstetrics and Gynaecology, St. George's Hospital Medical School, London SW17 ORE, England. gnargund@sghms.ac.uk
Reid
F
F
Parsons
J
J
D000328:Adult; D002064:Buserelin / Q000008:administration & dosage; D006063:Chorionic Gonadotropin / Q000008:administration & dosage*; D004334:Drug Administration Schedule; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D008297:Male; D009865:Oocytes / Q000502:physiology*; D011247:Pregnancy; D011446:Prospective Studies; D018709:Statistics, Nonparametric; D013480:Superovulation / Q000502:physiology*; D013997:Time Factors
D006063:Chorionic Gonadotropin; D002064:Buserelin