Assisted zona hatching
Assisted zona hatching (pronounced: as-sis-ted zo-na hat-ching) is a procedure used in in vitro fertilization (IVF) to increase the chances of implantation of the embryo in the uterine wall. The term originates from the words "assisted", meaning helped or facilitated, and "zona hatching", referring to the process where an embryo breaks out of its protective outer layer, the zona pellucida, to implant into the uterus.
Procedure
In assisted zona hatching, a small hole is made in the zona pellucida either mechanically, chemically, or using a laser. This is done to facilitate the embryo's hatching process, which is necessary for it to implant into the uterine wall. The procedure is usually performed just before the transfer of the embryo into the uterus.
Indications
Assisted zona hatching is typically recommended for women who have had previous unsuccessful IVF cycles, are of advanced maternal age, or have a thickened zona pellucida. It may also be used in cases where the embryos are to be frozen for later use.
Risks and Controversies
While assisted zona hatching can improve the chances of implantation, it also carries potential risks. These include damage to the embryo during the procedure and an increased risk of identical twinning. The procedure's effectiveness and safety are still subjects of ongoing research and debate in the medical community.
See Also
External links
- Medical encyclopedia article on Assisted zona hatching
- Wikipedia's article - Assisted zona hatching
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