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  • Title: Natural oocyte retrieval with intravaginal fertilization: a simplified approach to in vitro fertilization.
    Author: Taymor ML, Ranoux CJ, Gross GL.
    Journal: Obstet Gynecol; 1992 Nov; 80(5):888-91. PubMed ID: 1407935.
    Abstract:
    To simplify in vitro fertilization (IVF), we have combined natural-cycle oocyte retrieval with intravaginal fertilization. Our subjects ranged in age from 28-40 years and were monitored by ultrasound and steroid hormone levels. Oocyte retrieval was carried out under vaginal ultrasound-guided aspiration 32-36 hours after the onset of the LH surge. The oocyte was identified and placed in a sealed capsule containing culture media and sperm. The capsule, in a sealed cryoflex envelope, was placed in the woman's vagina and removed 42-48 hours later. The embryo was then isolated and transferred to the woman's uterus. Fifty-one retrieval cycles were attempted in 45 patients. At least one oocyte was retrieved in 88% of cycles, and fertilization was achieved in 84% of oocytes. Of the five clinical pregnancies (10%), four have delivered and one is ongoing. The cost of this procedure is approximately one-third that of standard IVF. The advantages of our method are the elimination of the use of gonadotropins, the simplicity of monitoring and oocyte retrieval, and the lack of need for expensive laboratory equipment. Natural oocyte retrieval with intravaginal fertilization may prove appropriate for those women requiring IVF who fear multiple pregnancies, have side effects from controlled ovarian hyperstimulation, or cannot afford standard IVF.
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