Donor side effects experienced under minimal controlled ovarian stimulation (COS) with in vitro maturation (IVM) versus conventional COS for in vitro fertilization (IVF) treatment

To evaluate oocyte retrieval experiences and side effects under minimal controlled ovarian stimulation (COS) for in vitro maturation (IVM) compared to conventional COS. Retrospective Survey Study SETTING: Clinical in vitro fertilization (IVF) treatment center in Spain. Data were collected from subjects undergoing minimal COS (n=110; 600-800 IU FSH) for IVM and conventional COS for egg donation (n=48; 1800-2600 IU FSH) from April 2022 to November 2023. Minimal and conventional controlled ovarian stimulation. The most common side effects suffered during ovarian stimulation and after OPU, satisfaction level, and the likelihood of recommending or repeating minimal or conventional COS. Statistical analysis included Mann Whitney and Chi-square tests, with a significance level set at p