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Comparison of Two Different Fixed Doses of Follitropin-b in Controlled Ovarian Hyperstimulation: A Prospective Randomized, Double Blind Clinical Trial

1151

Kamthorn Pruksananonda MD*, Somchai Suwajanakorn MD*,
Wisan Sereepapong MD*, Pramuan Virutamasen, MD*

* Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University

Abstract


A prospective randomized, double blind, single centre study was conducted to compare the efficacy, efficiency and clinical side effects of daily fixed dose regimen of,-either 100 IU or 200 IU of recombinant follicle stimulating hormone(rFSH) Follitropin b in down-regulated women undergoing controlled ovarian hyperstimulation(COH) for either conventional in vitro fertilization(IVF) or intracytoplasmic sperm injection(ICSI). A total of sixty women were randomly allocated according to the criteria for the treatment by either 100 IU(n = 30) or 200 IU(n = 30) of FSH. Although more cycle cancellations due to low response were observed in the 100 IU group (n = 9 vs n = 2), two cases of mild and moderate ovarian hyperstimulation syndrome were noted in the higher dose group. Subjects in the group treated with 200 IU appeared to yield more follicles > 17 mm (4.4 vs 3.3, p = 0.05) and more oocytes compared to the group treated with 100 IU (9.2 versus 6.0 oocytes, NS). The total dosage required to develop at least three follicles according to the protocol was significantly lower in the group treated with 100 IU (1203.33 versus 2106.67, P < 0.0001). In conclusion, a fixed daily dose of 200 IU of rFSH Follitropin b compared to a fixed daily dose of 100 IU is more effective in terms of follicles > 17 mm development and the number of oocytes retrieved along with a lower cancellation rate, but less efficient as indicated by a higher total rFSH dose needed.

Keyword : Follitropin, Ovarian hyperstimulation, Infertile, IVF, recombinant FSH, Oocyte, Clinical trial



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