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Objective Does the timing of cabergoline administration impact the rate of mild/moderate ovarian hyperstimulation syndrome in women with a GnRH agonist trigger?Methods We conducted a retrospective cohort analysis of 285  in-vitro  fertilization patients at risk of OHSS who received a GnRH agonist trigger from 2011 to 2019 at McGill University Health Centre. Group 1 (Trig, n=101) began taking cabergoline 0.5 mg orally for 7 days at the time of GnRH agonist trigger, while Group 2 (Retriev, n=184) started taking cabergoline on the day of oocyte retrieval. The rates of OHSS were then compared between the groups using analysis of variance and chi-square analysis, where appropriate.Results The baseline demographic characteristics of the two groups were similar. Trig appeared to be at a slightly higher risk of OHSS based on a significantly higher antral follicle count (20.2±4.2 vs. 19.0±4.3;  P =0.02), higher number of stimulated follicles &gt;10 mm at trigger (25.7±7.0 vs. 22.8±8.3,  P =0.003), and higher peak serum E2 level (17,325±2,542 vs. 14,822±3,098;  P =0.0001). The Trig group had lower rates of mild and moderate OHSS (24% vs. 36%;  P =0.045). Neither group had any patients who developed severe OHSS. Trig had fewer patients presenting with pelvic free fluid (13% vs. 23%;  P =0.03), lower hematocrit (37.8±4.8% vs. 40.5±4.2%;  P =0.0001), higher albumin concentrations (30.4±2.7 vs. 29.5±2.0;  P =0.01), and lower potassium concentrations (3.9±0.5 vs. 4.2±0.7;  P =0.0002).Conclusion Cabergoline at the time of trigger as compared to the time of collection should be investigated to assess its role in reducing the rates of mild/moderate OHSS.

Does the timing of cabergoline administration impact rates of ovarian hyperstimulation syndrome?