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Human chorionic gonadotropin levels in conception cycles after uterine and tubal embryo transfer
B Soltes1, R G Rawlins, Z Binor
1Department of Obstetrics and Gynecology, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois 60612.
Objective:
To describe the rate of rise of beta-hCG levels in normal single gestations after uterine and tubal embryo transfer.
Design:
A prospective study from 1991 through 1992 in which infertility patients who conceived after ovulation induction and ET were monitored with serum beta-hCG levels.
Setting:
Infertility unit at Rush-Presbyterian-St. Luke's Medical Center in Chicago, Illinois.
Patients:
Ninety-eight women conceived after ovarian stimulation and ET. This study included only patients who conceived after uterine ET (n = 12) and tubal ET (n = 25) and had an exponential rise of beta-hCG levels and sonographic evidence of an intrauterine gestation.
Results:
The rate of rise of mean beta-hCG levels after ET preceded that of tubal ET by 24 hours until day 14 when the two approximate each other.
Conclusion:
There appears to be a unique interaction between the trophoblast and endometrial surface that may account for the early detection of beta-hCG after uterine versus tubal ET.