What is ICSI and when is it indicated?
ICSI, or Intracytoplasmic Sperm Injection, is the most widely used specialized insemination technique. It is a newer advancement in reproductive technology in which procedures are performed on eggs under a specially constructed microscope in a process known as micromanipulation. ICSI enables fertilization in cases of very low sperm counts, of non-motile sperm, of severe sperm abnormalities, and in cases in which sperm have poor penetration ability. It may also be indicated in couples who had no fertilization in previous IVF attempts. The technique involves injecting a single sperm directly into the egg. After injection of the sperm, the eggs are incubated for 16-18 hours, and then examined for evidence that fertilization has occurred. The resulting embryos can then either be transferred back to the woman’s uterus using standard IVF techniques (or to the fallopian tubes using ZIFT), or can be frozen for transfer at a later time. What is Assisted Zona hatching (AZH) and when is it indica
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