Ravhon A, Lawrie H, Ellenbogen A, Lavery S, Trew G, Winston R. A prospective, randomized controlled trial comparing the efficacy of recombinant follicle-stimulating hormone in three different in vitro fertilization protocols.
Fertil Steril 2000;
73:908-12. [PMID:
10785215 DOI:
10.1016/s0015-0282(00)00469-6]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE
To compare the following IVF protocols: a short protocol and long protocols starting on day 2 or day 21. All protocols used recombinant FSH (rFSH) for ovarian stimulation.
DESIGN
Prospective, randomized study.
SETTING
An assisted reproduction unit at a university center.
PATIENT(S)
Patients undergoing IVF (n = 150) were treated according to one of the three treatment protocols allocated by a random method.
INTERVENTION(S)
All patients used buserelin acetate and rFSH. Patients began the long protocol on day 2 (group 1) or day 21 (group 2) of the cycle. Patients in group 3 began the short protocol on day 2 of the cycle.
MAIN OUTCOME MEASURE(S)
Ovarian response, implantation rates, and pregnancy rates (PRs).
RESULT(S)
Patients treated with the short protocol (group 3) were stimulated in a shorter time, required less rFSH, and achieved higher E(2) levels. The numbers of follicles, oocytes, and embryos were similar in all three groups. The implantation rates were similar in groups 1 and 2 (11.8% and 13.3%, respectively), and both were higher than in group 3 (4.1%). Clinical PRs per oocytes retrieved were 19.6%, 18.6%, and 8.3% in groups 1, 2, and 3, respectively.
CONCLUSION(S)
The implantation rate was significantly higher with the long protocols than with the short protocol, with a tendency for a higher PR as well.
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