MC第2天 vs MC第15天開始施打誘導排卵針
卵子取出數量&懷孕率類似

Fertil Steril. 2014 Nov;102(5):1307-11. doi: 10.1016/j.fertnstert.2014.07.741. Epub 2014 Aug 22.

Comparison of starting ovarian stimulation on day 2 versus day 15 of the menstrual cycle in the same oocyte donor and pregnancy rates among the corresponding recipients of vitrified oocytes.

Martínez F1, Clua E2, Devesa M2, Rodríguez I2, Arroyo G2, González C2, Solé M2, Tur R2, Coroleu B2, Barri PN2.

Author information

Abstract

OBJECTIVE:

To assess the clinical pregnancy rate per transfer in recipients of embryos from donor oocytes obtained after ovarian stimulation initiated on day 2 (D2) or day 15 (D15) of the menstrual cycle with a secondary end point of comparing the response to stimulation.

DESIGN:

Prospective observational comparative study.

SETTING:

Private in vitro fertilization (IVF) program.

PATIENT(S):

Oocyte donors (OD) and recipients.

INTERVENTION(S):

Donors stimulated within 3 months, starting on day 2 or day 15 after bleeding, with recombinant follicle-stimulating hormone (FSH), gonadotropin-releasing hormone (GnRH) antagonist, and GnRH agonist trigger, and oocytes vitrified and later assigned to recipients, followed by routine IVF procedures one to two embryos transferred.

MAIN OUTCOME MEASURE(S):

Primary outcome pregnancy rate, and secondary outcome number of mature oocytes retrieved.

RESULT(S):

Nine D2 and nine D15 cycles were performed in nine donors. There were no differences between D2 and D15 in the number of mature oocytes obtained (14.0±6.96 vs. 16.89±7.52). To date, 20 recipients have received vitrified oocytes (8 recipients received D2 oocytes and 12 recipients received D15 oocytes). There were no differences between the groups of recipients in fertilization rate (77.3% vs. 76.5%) or number of embryos transferred (1.50±0.53 vs. 1.67±0.65). Twelve clinical pregnancies were obtained. No differences were noted in pregnancy rates (62.5% vs. 58.3%) or implantation rates (41.67% vs. 45%) between recipients of D2 oocytes and recipients of D15 oocytes.

CONCLUSION(S):

Donor oocytes obtained after ovarian stimulation initiated on day 15 of the cycle achieve good pregnancy rates. This information is useful for patients with cancer undergoing fertility preservation.