Pergoveris- behandling fører sjældent til signifikant OHSS, medmindre medicinen, man anvender for at inducere afsluttende follikelmodning (indeholdende humant choriongonadotropin - hCG), er indgivet.
Pergoveris treatment seldom gives rise to significant OHSS unless the medicine used to induce final follicular maturation (containing human chorionic gonadotrophin - hCG) is administered.