Shulman A, Ben-Nun I, Ghetler Y, Yonish M, Mashiach S
Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, Israel.
J Assist Reprod Genet. 1997 Jan;14(1):23-5. doi: 10.1007/BF02765747.
No oocytes were found during four ovum pickups (OPU), despite a satisfactory ovarian response to controlled ovarian hyperstimulation. After the first attempt failed in the fourth case, five eggs were retrieved, fertilized, and cleaved after cycle rescue with hCG.
Whenever oocytes are not aspirated during OPU due to a lack of hCG administration, the cycle may be rescued if 10,000 IU of hCG is injected immediately and OPU planned for 33-36 hr later.