Background: Empty follicle syndrome (EFS) is a rare complication in
which no oocytes are retrieved in oocyte pick-up (OPU) despite adequate
controlled ovarian hyperstimulation (COH). Various studies and systematic reviews
have reported that EFS is mainly caused by diminished ovarian reserve (DOR)
because EFS tends to occur in patients with a poor response to COH. However,
these factors do not explain all cases. Current knowledge of these pathological
factors is limited, and treatment is unknown. This study aimed to find out the
clinical predictors of EFS before OPU. Methods: In this study, 2342
cycles of 1148 cases that underwent OPU between January 2015 and November 2020 in
two reproductive clinics were retrospectively enrolled. Ninety-one and 2251
cycles were classified as EFS (no cultivatable oocytes retrieved) and non-EFS
(cultivatable oocytes retrieved), respectively. Results: The EFS and
non-EFS incidence was 3.9% and 96.1%, respectively. The mean patient age in the
EFS group was higher than that in the non-EFS group (40.3
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Open Access
Original Research
Predictive Factors for Empty Follicle Syndrome in Infertile Patients Undergoing Assisted Reproductive Technology Treatment: A Retrospective Cohort Study and Brief Literature Review
Junichiro Mitsui1,2, Kuniaki Ota3,*, Hidetoshi Yamashita4, Toshio Sujino2, Kenichiro Hiraoka2, Shoko Katsumata1,2, Yuko Takayanagi2, Yurie Nako2, Makiko Tajima2, Kumi Ohuchi5, Masaru Hayashi5, Tomonori Ishikawa6, Kiyotaka Kawai1,2,5
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1
Comprehensive Reproductive Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 113-8519 Tokyo, Japan
2
Reproductive Medicine, Kameda IVF Clinic Makuhari, 261-8501 Chiba, Japan
3
Fukushima Medical Center for Children and Women, Fukushima Medical University, 960-1295 Fukushima, Japan
4
H.U. Group Research Institute G.K., Research Laboratory, 197-0833 Tokyo, Japan
5
Reproductive Medicine, Kameda Medical Center, 296-8602 Chiba, Japan
6
Department of Pediatrics, Perinatal and Maternal Medicine (Ibaraki), Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 113-8519 Tokyo, Japan
*Correspondence: kuniakiota@gmail.com (Kuniaki Ota)
Clin. Exp. Obstet. Gynecol. 2023, 50(4), 80;
https://doi.org/10.31083/j.ceog5004080
Submitted: 26 December 2022 | Revised: 22 February 2023 | Accepted: 6 March 2023 | Published: 17 April 2023
Copyright: © 2023 The Author(s). Published by IMR Press.
This is an open access article under the CC BY 4.0 license.
Abstract
Keywords
empty follicle syndrome
anti-Müllerian hormone
antral follicle count
controlled ovarian hyperstimulation
ovarian reserve
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