In Vitro Fertilization (IVF) Step by step part 8

Additional  In Vitro Fertilization Procedures

Laser Assisted Hatching

An embryo must hatch out of its outer membrane (zona pellucida) before implanting in the uterine wall (endometrium). Sometimes, the zona is abnormally thick. Laser assisted hatching is a technique that allows a small gap in the zona pellucida to be made. This will aid the embryo in breaking out of this membrane and facilitates implantation. It is a technique that is performed before embryo transfer and when doing trophectoderm biopsies. Assisted hatching is specifically recommended for patients who are over 37 years of age, have diminished ovarian reserve as determined by a day 3 FSH level, or have lower antral follicle counts. Patients who are poor responders to gonadotropin stimulation, or have had previous failed implantation may also benefit from this procedure. Studies have shown that assisted hatching improves IVF success rates in both fresh embryo transfers and frozen embryo transfers.

 

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