Ovulation induction in polycystic ovarian disease by pure FSH (Metrodin). A comparison between chronic low-dose pulsatile administration and i.m. injections.

A randomized cross-over study was performed to assess the value of pulsatile versus i.m. administration of pure FSH in polycystic ovarian disease. All patients admitted to the study had failed to respond to treatment with clomiphene citrate, while four had also been unsuccessfully treated with i.m. Pergonal. Sixteen cycles with i.m. FSH and 15 cycles with pulsatile s.c. FSH were analysed. The results showed no statistically significant differences in the dosage, the rate of ovulation or pregnancy rate. Hyperstimulation occurred in 30% of both the treatment groups. It is concluded that chronic low-dose pulsatile administration of pure FSH (Metrodin, Serono) has no advantage over chronic low-dose i.m. administration.