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Clinical and Experimental Obstetrics & Gynecology  2008, Vol. 35 Issue (3): 170-171    DOI:
Original Research Previous articles | Next articles
Normal pregnancy resulting from a non-pronuclear oocyte at the time of examination for fertilization
R.O. Burney1, J. Gebhardt1, Y. Shu1, B. Behr1, L. M. Westphal1, *()
1Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, CA (USA)
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Abstract  
Purpose: To report the case of a patient undergoing in vitro fertilization (IVF) in which a non-pronuclear (0PN) oocyte resulted in a normal pregnancy. Methods: A 36-year-old woman underwent an IVF-embryo transfer treatment cycle. Results: Four oocytes were retrieved for insemination by IVF. Examination for fertilization revealed two polypronuclearpolygynic and two non-pronuclear oocytes. The non-pronuclear oocytes were observed further for development. One embryo developed from the non-pronuclear cohort and was transferred at the 8-cell stage on day 3. Subsequently, a pregnancy developed, and resulted in the delivery of a healthy term infant. Conclusions: Non-pronuclear oocytes may represent a source of developmentally competent embryos, and further observation of this cohort should be considered, particularly in situations involving a low yield of oocytes at retrieval.
Key words:  Fertilization      Infertility      Non-pronuclear     
Published:  10 September 2008     
*Corresponding Author(s):  L. M. WESTPHAL     E-mail:  lynnw@stanford.edu

Cite this article: 

R.O. Burney, J. Gebhardt, Y. Shu, B. Behr, L. M. Westphal. Normal pregnancy resulting from a non-pronuclear oocyte at the time of examination for fertilization. Clinical and Experimental Obstetrics & Gynecology, 2008, 35(3): 170-171.

URL: 

https://ceog.imrpress.com/EN/     OR     https://ceog.imrpress.com/EN/Y2008/V35/I3/170

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