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Reducing the trigger dose of recombinant hCG in high-responder patients attending an assisted reproductive technology program: an observational study

Authors Tiboni GM, Colangelo EC, Ponzano A

Received 2 February 2016

Accepted for publication 17 March 2016

Published 18 May 2016 Volume 2016:10 Pages 1691—1694


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Prof. Dr. Wei Duan

Gian Mario Tiboni, Enrica Concetta Colangelo, Adalisa Ponzano

Department of Medicine and Aging Sciences, University “G d’Annunzio” of Chieti-Pescara, Chieti, Italy

Abstract: Decreasing the dose of human chorionic gonadotropin (hCG) used to trigger final oocyte maturation in assisted reproductive technology programs is regarded as a useful intervention in the prevention of ovarian hyperstimulation syndrome, but the minimal effective dose has not been yet identified. In this study, the capacity of a reduced dose of recombinant hCG (r-hCG) to provide adequate oocyte maturation was tested for the first time. Thirty-five high-responder patients received a dose of 125 µg (half of the standard dose) of r-hCG for triggering final oocyte maturation. The number of oocytes retrieved per patient and the proportion of mature oocytes were evaluated. As a result, a mean number of 14 oocytes were retrieved, of which 85% were found to be mature (MII). There was only one patient developing a moderate form of ovarian hyperstimulation syndrome and not requiring hospitalization. It is suggested that r-hCG at 125 µg can be effective in triggering final oocyte maturation in high-responder patients. Additional properly powered and controlled studies are needed to support this contention.

Keywords: recombinant hCG, low dose, triggering oocyte maturation, OHSS

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