Open AccessAnalyzing the risk factors for a diminished oocyte retrieval rate under controlled ovarian stimulation
Author(s) -
Nakamura Mayumi,
Yamashita Yoshiki,
Hayashi Atsushi,
Saito Natsuho,
Yu Masae,
Hayashi Masami,
Terai Yoshito,
Ohmichi Masahide
Publication year - 2017
Publication title -
reproductive medicine and biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 22
eISSN - 1447-0578
pISSN - 1445-5781
DOI - 10.1002/rmb2.12004
Subject(s) - infertility , endometriosis , oocyte , medicine , in vitro fertilisation , controlled ovarian hyperstimulation , gynecology , pregnancy , embryo , biology , genetics , microbiology and biotechnology
Abstract Aim To investigate which risk factors contribute to a lower oocyte retrieval ratio in women who are receiving controlled ovarian hyperstimulation. Methods The authors retrospectively analyzed 329 in vitro fertilization (IVF) cycles under controlled ovarian hyperstimulation by using a gonadotropin‐releasing hormone antagonist or agonist at Osaka Medical College, Japan. The patients were classified into five groups: advanced age, male infertility, severe endometriosis, tubal infertility, and unexplained infertility. The primary outcomes were the patients’ age, oocyte retrieval ratio, serum basal follicle‐stimulating hormone, total dose of gonadotropin, and the clinical outcome. A secondary outcome was the stepwise multivariate logistic regression analysis to assess the factors associated with the failure of oocyte retrieval. Results The oocyte retrieval ratio declined significantly with the patient's age. The ratio of endometriosis in unsuccessful cases was significantly higher than that in successful cycles. Advanced age and endometriosis were the factors that were significantly associated with a lowered oocyte retrieval rate. Conclusion Advanced age and endometriosis are high‐risk factors that contribute to oocyte retrieval failure in infertile patients who are receiving IVF treatment.