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Gamete Intrafallopian Transfer and Zygote Intrafallopian Transfer (ZIFT & GIFT)

The ovaries are stimulated with fertility injections as IVF protocol. The eggs are retrieved vaginally. The retrieved eggs are examined and the two or three most mature eggs are mixed together with the prepared sperm. Both eggs and sperm are immediately transferred back through a fine catheter into the fallopian tubes. The remaining eggs are inseminated in-vitro and the embryos can be frozen for future use.

The ovaries are stimulated with fertility injections as IVF protocol. The eggs are retrieved vaginally. The retrieved eggs are examined and the two or three most mature eggs are mixed together with the prepared sperm. Both eggs and sperm are immediately transferred back through a fine catheter into the fallopian tubes. The remaining eggs are inseminated in-vitro and the embryos can be frozen for future use.

With regard to ZIFT, the retrieved eggs are mixed with prepared sperm and incubated for 18-20 hours. The fertilized eggs are examined and only two or three embryos are subsequently transferred back through a fine catheter into the fallopian tubes. The remaining eggs are inseminated in-vitro and the embryos can be frozen for future use.

GIFT & ZIFT are primarily recommended for couples who suffer from unexplained infertility, cervical hostility and minimal endometriosis. Now these techniques are less common since IVF can offer high pregnancy rate and less invasive. We may recommend this technique, however, in special circumstances, such as repeated failure with IVF especially in older women with open fallopian tubes.