In vitro fertilization and embryo transfer during natural cycles.
OBJECTIVE
To report the results of in vitro fertilization and embryo transfer (IVF/ET) performed during natural cycles.


METHODS
A prospective clinical study.


RESULTS
Thirty-two cycles were started in 19 patients who had regular ovulatory cycles and tubal factors or unexplained infertility only as the cause of infertility. Egg collection was performed in 12 cycles, and four pregnancies resulted from ET in eight cycles. The pregnancy rates were 12.5% per cycle initiated, 33.3% per retrieval cycle and 50% per transfer.


CONCLUSIONS
Natural cycle IVF/ET offers a low-cost alternative to patients with infertility.
Ng
E H
EH
Department of Obstetrics and Gynaecology, Queen Mary Hospital, University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China. nghye@hkucc.hku.hk
Chui
D K
DK
Tang
O S
OS
Lau
E Y
EY
Yeung
W S
WS
Chung
H P
HP
D000328:Adult; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007247:Infertility, Female / Q000628:therapy*; D008597:Menstrual Cycle / Q000502:physiology*; D010060:Ovulation; D011247:Pregnancy; D018873:Pregnancy Rate; D011446:Prospective Studies