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vol.68 número4HISTERECTOMIA VAGINAL Y CORRECCION DE INCONTINENCIA URINARIA DE ESFUERZO CON TECNICA DE TVT OBTURADOREXPERIENCIA Y MANEJO DEL PURPURA TROMBOCITOPENICO IDIOPATICO DURANTE EL EMBARAZO índice de autoresíndice de materiabúsqueda de artículos
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Revista chilena de obstetricia y ginecología

versión impresa ISSN 0048-766Xversión On-line ISSN 0717-7526

Resumen

POMMER T, Ricardo et al. CRIOPRESERVACION DE PRONUCLEOS: ROL EN EL PROGRAMA DE FERTILIZACION ASISTIDA. Rev. chil. obstet. ginecol. [online]. 2003, vol.68, n.4, pp.287-292. ISSN 0048-766X.  http://dx.doi.org/10.4067/S0717-75262003000400003.

Program at the San Borja Arriarán Clinical Hospital - University of Chile as a method of reducing the incidence of multiple pregnancies and providing an additional opportunity of embryo transfer, without requiring another hyperstimultaion ovarian cycle. Material and Methods: Five hundred and forty five Assisted Fertilization procedures have been performed between march 2000 and june 2003. Results: The PN cryopreservation program was approved by the Institutional Review Board in december 2001. Since then 51.3% of couples participating in our IVF program have asked for PN cryopreservation. The total number of PN (n= 623) that have been cryopreserved resulting in an average of 6.4 PN per couple. Presently, 166 PN have been unfrozen with a surviving rate of 80.7% (n= 134). Eighty five percent of the PN (n= 114) cleaved to four to six cells embryo. All of the have been transferred in 39 cycles with an average of 2.9 embryos per couple, originating 12 clinical pregnancies (30.7%) with 11.4% rate of implantation. The PN cryopreservation program has diminished in a significant manner the number of multiple pregnancies in twins (23% to 15.5%), as well as, triplets (7.6% o 2.2%). In addition we have not seen quadruples or more over the time agenda of the cryopreservation program

Palabras clave : Cryopreservation; human pronuclear; pregnancy after cryopreservation.

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