LAUSR

Abstract This study aimed to evaluate the effect of methylprednisolone on prevention of ovarian hyperstimulation syndrome (OHSS) in polycystic ovarian syndrome (PCOS) patients undergoing in-vitro fertilisation (IVF). This randomised controlled trial was carried out between November 2009 and December 2013. A total of 219 eligible patients were randomly allocated for treatment (n = 108) or control groups (n = 111). The treatment group received oral methylprednisolone starting from the first day of stimulation. These patients also received an intravenous dose of methylprednisolone on the days of egg collection and embryo transfer. The control group received no glucocorticoid treatment to prevent OHSS. Nineteen percent of patients (18/93) who received methylprednisolone developed OHSS compared with 16.5% (15/91) in the control group and no significant difference was found (p = .61). There were no significant differences between treatment and control groups in the rates of implantation (10% versus 11%, p = .77) and clinical pregnancy (23.2% versus 17.7%, p = .46). Methylprednisolone did not reduce the incidence and severity of OHSS in PCOS patients undergoing IVF and no improvement in clinical outcomes was observed. Impact statement No significant differences were found in OHSS incidence and clinical outcomes between women who received methylprednisolone and control group. There seems to be no benefit for the routine use of glucocorticoids in IVF/ICSI treatments.