Comparison of the pregnancy outcomes of progestin-primed vs. antagonist ovarian stimulation in patients with poor ovarian response: a retrospective study.

Objectives: Progestin-primed ovarian stimulation (PPOS) is an efficient controlled ovarian stimulation (COS) method. The study explored the pregnancy outcomes between PPOS and antagonist ovarian stimulation protocol (GnRH-ant) in infertile patients with poor ovarian response (POR).

Methods: This retrospective study included patients with POR who underwent COS at the Reproductive Medical Center of Shanxi Maternal and Child Health Hospital from January 2021 to April 2022.