Assisted Reproduction Does Surgical Management of Endometriosis Within 6 Months of an In Vitro Fertilization–Embryo Transfer Cycle Improve Outcome?1

Purpose: To assess the effect on cycle outcome of surgery for endometriosis performed in the 6 months prior to in vitro fertilization–embryo transfer (IVF-ET). Methods: Retrospective analysis of all patients with a primary diagnosis of endometriosis undergoing IVF-ET during 12 consecutive months. The setting included tertiary care assisted reproductive technology program. Ninety-five consecutive cycles in candidates for autologous IVF-ET who had undergone surgical resection of endometriosis within 60 months of oocyte retrieval were evaluated. Five patients with persistent or recurrent endometriomas>3 cm at the time of IVF-ET were excluded. Patients were divided into two groups based on the interval between the most recent surgical intervention and oocyte aspiration—Group I: •6 months’ interval (19 cycles); Group II:>6 months ’ interval (76 cycles). Results: Mean intervals between surgery and oocyte aspiration were significantly different between the groups (Gr I: 3.7 § 0.3 months; Gr II: 21.8 § 1.6 months; p < 0:001). There were no significant differences between groups with regards to age, extent of endometriosis, or results of ovarian stimulation and oocyte aspiration. Ongoing pregnancy rates (Gr I: 63.2%; Gr. II: 60.5%) were similar. Regression analyses revealed no correlation between implanta