Effect of type 3 intramural fibroids on in vitro fertilization–intracytoplasmic sperm injection outcomes: a retrospective cohort study

Type 3 fibroids exert a negative impact on the rates of implantation, clinical pregnancy, and live birth in patients undergoing in vitro fertilization–intracytoplasmic sperm injection.

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Volume 109, Issue 5, Pages 817–822.e2

Authors:

Lei Yan, M.D., Ph.D., Qian Yu, M.D., Ya-nan Zhang, M.D., Zizhen Guo, M.D., Zhongyuan Li, M.D., Jinlei Niu, M.D., Jinlong Ma, M.D., Ph.D.

Abstract:

Objective

To evaluate the influence of type 3 intramural fibroids on in vitro fertilization–intracytoplasmic sperm injection (IVF-ICSI) outcomes.

Design

Retrospective cohort study.

Setting

University-based reproductive medicine center.

Patient(s)

All women undergoing IVF-ICSI from January 1, 2009, to December 31, 2016, in our unit.

Intervention(s)

Each woman was matched with three separate control subjects of the same age (±1 year), number of cycles, type of infertility (primary or secondary), type of protocol used for controlled ovarian hyperstimulation (COH), and no uterine fibroids identified by transvaginal ultrasound.

Main Outcome Measure(s)

Implantation, clinical pregnancy, clinical miscarriage, and live birth rates.

Result(s)

We included 151 patients with type 3 intramural fibroids and 453 matched control subjects who underwent IVF-ICSI. The rate of “other protocol” used in COH was significantly higher in women with type 3 fibroids than in the control subjects (P<.001). The experimental group had a significantly lower implantation rate. Type 3 fibroids also resulted in a lower frequency of live births and clinical pregnancy. There was no significant difference between the groups in the rate of clinical miscarriage. Compared with the corresponding control subjects, patients with type 3 fibroids with a single fibroid diameter (SD) or total reported fibroid diameter (TD) >2.0 cm also had significantly lower rates of live birth, clinical pregnancy, and implantation. Type 3 fibroids with SD or TD ≤2.0 cm had no significant difference in IVF-ICSI outcomes compared with corresponding control subjects.

Conclusion(s)

Our results suggest that type 3 fibroids exert a negative impact on the rates of implantation, clinical pregnancy, and live birth in patients undergoing IVF-ICSI, but do not significantly increase the clinical miscarriage rate. The deleterious impact of type 3 fibroids was remarkable in women with type 3 fibroids with TD or SD >2.0 cm.


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Fertility and Sterility® is an international journal for obstetricians, gynecologists, reproductive endocrinologists, urologists, basic scientists and others who treat and investigate problems of infertility and human reproductive disorders. The journal publishes juried original scientific articles in clinical and laboratory research relevant to reproductive endocrinology, urology, andrology, physiology, immunology, genetics, contraception, and menopause. Fertility and Sterility® encourages and supports meaningful basic and clinical research, and facilitates and promotes excellence in professional education, in the field of reproductive medicine.

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